Updated 16 Sep 2026 · recomputed nightly
Is August 2027 a good month to visit Lisbon?
Lively — the typical August day in Lisbon is busier than 75% of its year.
If you are coming for something that only happens in August, that is the trade. If not, January is quieter.
Calm · Lively · Busy · Packed rank a day against Lisbon's own year — not a headcount.
August 2027 is a shoulder month in Lisbon: hot and dry, around 28°C / 83°F, Lively on 12 of 31 days — 19 days run Busy or Packed.
Yes. The typical August day in Lisbon is Lively, and 19 of the 31 days in our window run Busy or Packed, so most days feel crowded. Expect around 28 °C by day, with rain on about 1 days. The crowd comes with the school holidays in Portugal, Germany and France. Cruise ships call on 20 of the 31 days, 2 at once on Tuesday 31 August. Late August is the month's quietest stretch in Lisbon — the typical day at 56%, against 84% in mid August. The crush is at Belem's monument mile; the quiet is at the Gulbenkian and its gardens. The calmest day is Monday 23 August, the busiest Saturday 21 August.
In short, a solid middle-ground pick.
Among the 12 months we forecast for Lisbon, August ranks 3rd for crowd pressure. Its heaviest day is Sat 21 Aug, busier than 98% of the year; its lightest is Mon 23 Aug at 52%.
⚠︎ Weekends run heavy — the 1st, 8th, 14th, 15th, 21st, 22nd and 29th all sit Busy or Packed. If your dates can flex, a midweek arrival is the single easiest win.
Preparing pays off in a month like this: timed-entry tickets and pre-booked tours turn the queue time into sightseeing time. see the options →
Plan around the heat — around 28°C by day.
Refilling costs nothing and saves the walk to find a shop.
See water bottles →
The one thing you wear all day, every day of the trip.
See walking shoes →
How busy is Lisbon in August?
The busiest days are the 3rd, 16th, 21st and 31st, and 15 more. Away from those, most days sit Lively. The calmest stretch is the 26th–28th.
Cruise ships are in port on 20 of 31 days; the heaviest is Tue 31 Aug, 2 ships in at once. Those mornings fill the squares first — start early, or save them for indoors.
The month is not one thing: its lightest day sits at 52% of the year and its heaviest at 98%, so where you land inside it matters. All five Sundays run Busy or Packed. Daylight runs about 14 hours.
Either side of it, September is a little calmer.
Weekends run heavy — the 1st, 8th, 14th, 15th, 21st, 22nd and 29th all sit Busy or Packed. If your dates can flex, a midweek arrival is the single easiest win.
Sun 01 Aug Busy busier than 80% of days here · ⚓1 · Portugal school holidays
- MSC Sinfonia — guest capacity 2,070 09:00–18:00
Record Lisbon on Sun 1 Aug 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,070 guests at double occupancy; ships in port 09:00–18:00. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Mon 2 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 02 Aug Lively busier than 57% of days here · Portugal school holidays
Record Lisbon on Mon 2 Aug 2027 is forecast Lively. Why: Portugal school holidays; Germany school holidays; UK public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 03 Aug Packed busier than 96% of days here · ⚓2 · Portugal school holidays
- AIDAstella — guest capacity 2,194 07:00–17:00
- Carnival Miracle — guest capacity 2,124 08:00–17:00
Record Lisbon on Tue 3 Aug 2027 is forecast Packed. 2 cruise ships scheduled, at least 4,318 guests at double occupancy; ships in port 07:00–17:00. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Mon 2 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 04 Aug Packed busier than 94% of days here · ⚓1 · Portugal school holidays
- Sky Princess — guest capacity 3,668 10:00–22:00
Record Lisbon on Wed 4 Aug 2027 is forecast Packed. 1 cruise ship scheduled, at least 3,668 guests at double occupancy; ships in port 10:00–22:00. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Thu 5 Aug (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 05 Aug Busy busier than 65% of days here · ⚓1 · Portugal school holidays
- Spirit Of Adventure — guest capacity 999
Record Lisbon on Thu 5 Aug 2027 is forecast Busy. 1 cruise ship scheduled, at least 999 guests at double occupancy. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Fri 6 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 06 Aug Lively busier than 55% of days here · Portugal school holidays
Record Lisbon on Fri 6 Aug 2027 is forecast Lively. Why: school holidays in Portugal, Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 07 Aug Lively busier than 54% of days here · Portugal school holidays
Record Lisbon on Sat 7 Aug 2027 is forecast Lively. Why: school holidays in Portugal, Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 08 Aug Busy busier than 84% of days here · ⚓1 · Portugal school holidays
- Norwegian Dawn — guest capacity 2,340 06:00–16:00
Record Lisbon on Sun 8 Aug 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,340 guests at double occupancy; ships in port 06:00–16:00. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Sat 7 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 09 Aug Lively busier than 54% of days here · Portugal school holidays
Record Lisbon on Mon 9 Aug 2027 is forecast Lively. Why: school holidays in Portugal, Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 10 Aug Packed busier than 85% of days here · ⚓1 · Portugal school holidays
- Mein Schiff 6 — guest capacity 2,534 09:00–22:00
Record Lisbon on Tue 10 Aug 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,534 guests at double occupancy; ships in port 09:00–22:00. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Mon 9 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 11 Aug Packed busier than 88% of days here · ⚓2 · Portugal school holidays
- MSC Sinfonia — guest capacity 2,070 07:00–18:00
- Seven Seas Mariner — guest capacity 708 07:00–17:00
Record Lisbon on Wed 11 Aug 2027 is forecast Packed. 2 cruise ships scheduled, at least 2,778 guests at double occupancy; ships in port 07:00–18:00. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Thu 12 Aug (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 12 Aug Busy busier than 82% of days here · ⚓2 · Portugal school holidays
- AIDAstella — guest capacity 2,194 14:00–16:00
- Freedom Of The Seas — size unknown (uncounted)
Record Lisbon on Thu 12 Aug 2027 is forecast Busy. 2 cruise ships scheduled, at least 2,194 guests at double occupancy, plus 1 of unknown size. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Fri 13 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 13 Aug Lively busier than 54% of days here · Portugal school holidays
Record Lisbon on Fri 13 Aug 2027 is forecast Lively. Why: school holidays in Portugal, Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 14 Aug Busy busier than 75% of days here · ⚓1 · Portugal school holidays
- Aurora — guest capacity 1,874
Record Lisbon on Sat 14 Aug 2027 is forecast Busy. 1 cruise ship scheduled, at least 1,874 guests at double occupancy. Why: school holidays in Portugal, Germany and France. Nearest calmer day: Fri 13 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 15 Aug Busy busier than 80% of days here · ⚓1 · Portugal public holiday
- Marella Explorer 2 — guest capacity 1,814 08:00–16:00
Record Lisbon on Sun 15 Aug 2027 is forecast Busy. 1 cruise ship scheduled, at least 1,814 guests at double occupancy; ships in port 08:00–16:00. Why: Portugal public holiday; Germany public holiday; France public holiday. Nearest calmer day: Fri 13 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 16 Aug Packed busier than 97% of days here · ⚓1 · Portugal school holidays
- MSC Meraviglia — guest capacity 4,488 07:00–18:00
Record Lisbon on Mon 16 Aug 2027 is forecast Packed. 1 cruise ship scheduled, at least 4,488 guests at double occupancy; ships in port 07:00–18:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Sun 15 Aug (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 17 Aug Packed busier than 94% of days here · ⚓2 · Portugal school holidays
- Carnival Sunshine — guest capacity 3,002 08:00–17:00
- Seven Seas Grandeur — guest capacity 754 07:00–17:00
Record Lisbon on Tue 17 Aug 2027 is forecast Packed. 2 cruise ships scheduled, at least 3,756 guests at double occupancy; ships in port 07:00–17:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Sun 15 Aug (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 18 Aug Packed busier than 90% of days here · ⚓1 · Portugal school holidays
- Ventura — guest capacity 3,078
Record Lisbon on Wed 18 Aug 2027 is forecast Packed. 1 cruise ship scheduled, at least 3,078 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Thu 19 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 19 Aug Lively busier than 60% of days here · ⚓1 · Portugal school holidays
- Europa 2 — guest capacity 516
Record Lisbon on Thu 19 Aug 2027 is forecast Lively. Why: school holidays in Portugal and Germany. 1 cruise ship scheduled, at least 516 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 20 Aug Packed busier than 85% of days here · ⚓1 · Portugal school holidays
- Mein Schiff 6 — guest capacity 2,534 11:00–22:00
Record Lisbon on Fri 20 Aug 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,534 guests at double occupancy; ships in port 11:00–22:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Thu 19 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 21 Aug Packed busier than 98% of days here · ⚓3 · Portugal school holidays
- MSC Sinfonia — guest capacity 2,070 09:00–18:00
- Mein Schiff 3 — guest capacity 2,506 09:00–19:00
- Silver Shadow — guest capacity 388 19:00–?
Record Lisbon on Sat 21 Aug 2027 is forecast Packed. 3 cruise ships scheduled, at least 4,964 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Thu 19 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 22 Aug Packed busier than 96% of days here · ⚓1 · Portugal school holidays
- MSC Meraviglia — guest capacity 4,488 07:00–16:00
Record Lisbon on Sun 22 Aug 2027 is forecast Packed. 1 cruise ship scheduled, at least 4,488 guests at double occupancy; ships in port 07:00–16:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Mon 23 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 23 Aug Lively busier than 52% of days here · Portugal school holidays
Record Lisbon on Mon 23 Aug 2027 is forecast Lively. Why: school holidays in Portugal and Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 24 Aug Lively busier than 52% of days here · Portugal school holidays
Record Lisbon on Tue 24 Aug 2027 is forecast Lively. Why: school holidays in Portugal and Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 25 Aug Busy busier than 71% of days here · ⚓2 · Portugal school holidays
- Oceania Sirena — guest capacity 684 08:00–17:00
- Viking Sea — guest capacity 930
Record Lisbon on Wed 25 Aug 2027 is forecast Busy. 2 cruise ships scheduled, at least 1,614 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Tue 24 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 26 Aug Lively busier than 52% of days here · Portugal school holidays
Record Lisbon on Thu 26 Aug 2027 is forecast Lively. Why: school holidays in Portugal and Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 27 Aug Lively busier than 52% of days here · Portugal school holidays
Record Lisbon on Fri 27 Aug 2027 is forecast Lively. Why: school holidays in Portugal and Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 28 Aug Lively busier than 52% of days here · Portugal school holidays
Record Lisbon on Sat 28 Aug 2027 is forecast Lively. Why: school holidays in Portugal and Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 29 Aug Busy busier than 74% of days here · ⚓1 · Portugal school holidays
- Marella Explorer 2 — guest capacity 1,814 08:00–16:00
Record Lisbon on Sun 29 Aug 2027 is forecast Busy. 1 cruise ship scheduled, at least 1,814 guests at double occupancy; ships in port 08:00–16:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Sat 28 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 30 Aug Lively busier than 56% of days here · Portugal school holidays
Record Lisbon on Mon 30 Aug 2027 is forecast Lively. Why: Portugal school holidays; Germany school holidays; UK public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-08-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 31 Aug Packed busier than 98% of days here · ⚓2 · Portugal school holidays
- MSC Sinfonia — guest capacity 2,070 09:00–18:00
- Ventura — guest capacity 3,078
Record Lisbon on Tue 31 Aug 2027 is forecast Packed. 2 cruise ships scheduled, at least 5,148 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Mon 30 Aug (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-08-31 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of August is quietest in Lisbon?
Late August is the month's quietest stretch in Lisbon — the typical day at 56%, against 84% in mid August.
Can't move the dates? How to avoid the worst crowds
- The heaviest port day is Tue 31 Aug — 2 ships in at once. See the marquee sights on a lighter day, or be there for opening time.
- Need flexibility? The 26th–28th is the month's calmest stretch — the easiest window to move around in.
- On the busy days, the walk-up queues for the big sights are the biggest time-sink — a timed-entry ticket skips them, which is where a busy month is won or lost.
Travelling on a busy day?
Timed-entry and skip-the-line tickets turn queue time into sightseeing time — sort them before you fly.
August weather in Lisbon
Real heat — around 28°C / 83°F by day, so pace the afternoons and carry water, with rain on only about 1 days.
Worth booking the marquee sights ahead for the busy days, but you can keep the rest of the trip flexible.
More about Lisbon in August
Based on: Portugal's public holidays · school vacations across Portugal, France and Germany · the season pattern from official overnight stays · five years of weather records (2019–2023) · confirmed event dates · the published cruise schedule
Every figure is recomputed nightly from real cruise schedules, public and school holidays, and long-run climate normals. Gaps are shown, not filled.
