Updated 2 Nov 2026 · recomputed nightly
Is September 2027 a good month to visit Lisbon?
Busy — the typical September day in Lisbon is busier than 75% of its year.
If you are coming for something that only happens in September, that is the trade. If not, January is quieter.
Calm · Lively · Busy · Packed rank a day against Lisbon's own year — not a headcount.
September 2027 is peak-season Lisbon: warm and showery, around 26°C / 79°F, and Busy on 11 of 30 days.
It depends. The typical September day in Lisbon is Busy, and 21 of the 30 days in our window run Busy or Packed, so most days feel crowded. Expect around 26 °C by day, with rain on about 6 days. The crowd comes with the school holidays in Germany and Portugal. Cruise ships call on 25 of the 30 days, 2 at once on Thursday 30 September. EAIE Lisbon 2027 (European Association for International Education) falls on 7–10 September. Late September is the month's quietest stretch in Lisbon — the typical day at 65%, against 85% in early September. For similar weather with fewer people, come in June or May. The crush is at Belem's monument mile; the quiet is at the Gulbenkian and its gardens.
In short, worth it for the peak buzz, if you can take the crowds.
Among the 12 months we forecast for Lisbon, September ranks 2nd for crowd pressure. Its heaviest day is Wed 8 Sep, busier than 99% of the year; its lightest is Sat 18 Sep at 38%.
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 →
Nothing extreme to plan around — rain on 6 of 30 days.
The one thing you wear all day, every day of the trip.
See walking shoes →
A folding one lives in the day bag and weighs nothing.
See umbrellas →
How busy is Lisbon in September?
The busiest days are the 8th, 10th, 12th and 30th, and 17 more. Away from those, most days sit Lively.
Cruise ships are in port on 25 of 30 days; the heaviest is Thu 30 Sep, 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 38% of the year and its heaviest at 99%, so where you land inside it matters. All five Thursdays run Busy or Packed. Daylight runs about 12 hours.
Either side of it, August is a little calmer.
The calmest days are the 1st, 18th and 21st — aim for those if your dates can flex.
Wed 01 Sep Lively busier than 43% of days here · Portugal school holidays
Record Lisbon on Wed 1 Sep 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-2027-09-01 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 02 Sep Packed busier than 91% of days here · ⚓1 · Portugal school holidays
- Freedom Of The Seas — size unknown (uncounted)
Record Lisbon on Thu 2 Sep 2027 is forecast Packed. Why: school holidays in Portugal and Germany. 1 cruise ship scheduled, sizes unknown. Nearest calmer day: Wed 1 Sep (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-2027-09-02 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 03 Sep Packed busier than 90% of days here · ⚓2 · Portugal school holidays
- Mein Schiff 3 — guest capacity 2,506 09:00–22:00
- Oceania Sonata — guest capacity 1,338 10:00–19:00
Record Lisbon on Fri 3 Sep 2027 is forecast Packed. 2 cruise ships scheduled, at least 3,844 guests at double occupancy; ships in port 09:00–22:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Sat 4 Sep (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-2027-09-03 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 04 Sep Busy busier than 68% of days here · ⚓1 · Portugal school holidays
- Arcadia — guest capacity 2,094
Record Lisbon on Sat 4 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,094 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Wed 1 Sep (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-2027-09-04 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 05 Sep Busy busier than 80% of days here · ⚓2 · Portugal school holidays
- Norwegian Dawn — guest capacity 2,340 06:00–16:00
- Silver Spirit — guest capacity 608 11:00–?
Record Lisbon on Sun 5 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 2,948 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Wed 1 Sep (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-2027-09-05 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 06 Sep Busy busier than 76% of days here · ⚓1 · Portugal school holidays
- Queen Mary 2 — guest capacity 2,726
Record Lisbon on Mon 6 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,726 guests at double occupancy. Why: school holidays in Portugal and Germany. Nearest calmer day: Wed 1 Sep (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-2027-09-06 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 07 Sep Packed busier than 85% of days here · ⚓1 · Portugal school holidays · EAIE Lisbon 2027 (European Association for International Education)
- Star Explorer — guest capacity 196 08:00–11:00
Record Lisbon on Tue 7 Sep 2027 is forecast Packed. Why: school holidays in Portugal and Germany; EAIE Lisbon 2027. 1 cruise ship scheduled, at least 196 guests at double occupancy; ships in port 08:00–11:00. Nearest calmer day: Mon 6 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-09-07 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 08 Sep Packed busier than 99% of days here · ⚓1 · Portugal school holidays · EAIE Lisbon 2027 (European Association for International Education)
- Queen Victoria — guest capacity 2,074
Record Lisbon on Wed 8 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,074 guests at double occupancy. Why: Portugal school holidays; Germany school holidays; Spain public holiday; EAIE Lisbon 2027. Nearest calmer day: Mon 6 Sep (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-2027-09-08 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 09 Sep Packed busier than 85% of days here · Portugal school holidays · EAIE Lisbon 2027 (European Association for International Education)
Record Lisbon on Thu 9 Sep 2027 is forecast Packed. Why: school holidays in Portugal and Germany; EAIE Lisbon 2027. Nearest calmer day: Mon 6 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-09-09 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 10 Sep Packed busier than 99% of days here · ⚓1 · Portugal school holidays · EAIE Lisbon 2027 (European Association for International Education)
- MSC Sinfonia — guest capacity 2,070 09:00–18:00
Record Lisbon on Fri 10 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,070 guests at double occupancy; ships in port 09:00–18:00. Why: school holidays in Portugal and Germany; EAIE Lisbon 2027. Nearest calmer day: Mon 13 Sep (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-2027-09-10 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 11 Sep Packed busier than 93% of days here · ⚓1 · Portugal school holidays
- Freedom Of The Seas — size unknown (uncounted)
Record Lisbon on Sat 11 Sep 2027 is forecast Packed. Why: Portugal school holidays; Germany school holidays; Spain public holiday. 1 cruise ship scheduled, sizes unknown. Nearest calmer day: Mon 13 Sep (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-2027-09-11 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 12 Sep Packed busier than 96% of days here · ⚓2 · Portugal school holidays
- Celebrity Equinox — guest capacity 2,852 10:00–18:00
- Marella Explorer 2 — guest capacity 1,814 08:00–16:00
Record Lisbon on Sun 12 Sep 2027 is forecast Packed. 2 cruise ships scheduled, at least 4,666 guests at double occupancy; ships in port 08:00–18:00. Why: school holidays in Portugal and Germany. Nearest calmer day: Mon 13 Sep (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-2027-09-12 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 13 Sep Lively busier than 59% of days here · ⚓2 · Germany school holidays
- Crystal Symphony — guest capacity 606
- Spirit Of Adventure — guest capacity 999
Record Lisbon on Mon 13 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 1,605 guests at double occupancy. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-13 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 14 Sep Busy busier than 66% of days here · ⚓1
- AIDAstella — guest capacity 2,194 14:00–16:00
Record Lisbon on Tue 14 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,194 guests at double occupancy; ships in port 14:00–16:00. Nearest calmer day: Mon 13 Sep (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-2027-09-14 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 15 Sep Busy busier than 79% of days here · ⚓2 · Spain public holiday
- Borealis — size unknown (uncounted)
- Ventura — guest capacity 3,078
Record Lisbon on Wed 15 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 3,078 guests at double occupancy, plus 1 of unknown size. Why: Spain public holiday. Nearest calmer day: Mon 13 Sep (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-2027-09-15 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 16 Sep Busy busier than 80% of days here · ⚓1
- Mariner Of The Seas — guest capacity 3,334
Record Lisbon on Thu 16 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 3,334 guests at double occupancy. Nearest calmer day: Sat 18 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/lisbon/#d-2027-09-16 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 17 Sep Packed busier than 93% of days here · ⚓2
- Costa Diadema — guest capacity 3,772 12:00–19:00
- Viking Jupiter — guest capacity 930 02:00–?
Record Lisbon on Fri 17 Sep 2027 is forecast Packed. 2 cruise ships scheduled, at least 4,702 guests at double occupancy. Nearest calmer day: Thu 16 Sep (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-2027-09-17 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 18 Sep Calm busier than 38% of days here
Record Lisbon on Sat 18 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-18 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 19 Sep Lively busier than 52% of days here · ⚓1
- Oceania Allura — guest capacity 1,200 08:00–02:00
Record Lisbon on Sun 19 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,200 guests at double occupancy; ships in port 08:00–02:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-19 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 20 Sep Busy busier than 74% of days here · ⚓2 · Germany public holiday
- Azamara Journey — guest capacity 710 06:00–17:00
- MSC Sinfonia — guest capacity 2,070 09:00–18:00
Record Lisbon on Mon 20 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 2,780 guests at double occupancy; ships in port 06:00–18:00. Why: Germany public holiday. Nearest calmer day: Sun 19 Sep (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-2027-09-20 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 21 Sep Calm busier than 38% of days here
Record Lisbon on Tue 21 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-21 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 22 Sep Lively busier than 63% of days here · ⚓2
- Artania — guest capacity 1,188 09:00–18:00
- Oceania Insignia — guest capacity 698 08:00–20:00
Record Lisbon on Wed 22 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 1,886 guests at double occupancy; ships in port 08:00–20:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-22 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 23 Sep Busy busier than 66% of days here · ⚓2
- AIDAstella — guest capacity 2,194 14:00–16:00
- Freedom Of The Seas — size unknown (uncounted)
Record Lisbon on Thu 23 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 2,194 guests at double occupancy, plus 1 of unknown size. Nearest calmer day: Wed 22 Sep (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-2027-09-23 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 24 Sep Lively busier than 64% of days here · ⚓1
- Carnival Miracle — guest capacity 2,124 07:00–16:00
Record Lisbon on Fri 24 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 2,124 guests at double occupancy; ships in port 07:00–16:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-24 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 25 Sep Busy busier than 66% of days here · ⚓2
- Oceania Sonata — guest capacity 1,338 08:00–17:00
- Viking Libra — guest capacity 998 02:00–?
Record Lisbon on Sat 25 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 2,336 guests at double occupancy. Nearest calmer day: Fri 24 Sep (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-2027-09-25 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 26 Sep Lively busier than 62% of days here · ⚓1
- Marella Explorer 2 — guest capacity 1,814 08:00–16:00
Record Lisbon on Sun 26 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,814 guests at double occupancy; ships in port 08:00–16:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-26 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 27 Sep Busy busier than 73% of days here · ⚓2
- Queen Victoria — guest capacity 2,074
- Seven Seas Voyager — guest capacity 706 07:00–17:00
Record Lisbon on Mon 27 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 2,780 guests at double occupancy. Nearest calmer day: Sun 26 Sep (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-2027-09-27 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 28 Sep Busy busier than 83% of days here · ⚓2
- Celebrity Apex — guest capacity 2,918 08:00–18:00
- Silver Dawn — guest capacity 576 18:00–?
Record Lisbon on Tue 28 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 3,494 guests at double occupancy. Nearest calmer day: Wed 29 Sep (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-2027-09-28 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 29 Sep Lively busier than 54% of days here · ⚓1
- Oceania Marina — guest capacity 1,258 08:00–17:00
Record Lisbon on Wed 29 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,258 guests at double occupancy; ships in port 08:00–17:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-09-29 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 30 Sep Packed busier than 96% of days here · ⚓2
- Celebrity Xcel — guest capacity 3,260 10:00–20:00
- MSC Sinfonia — guest capacity 2,070 07:00–02:00
Record Lisbon on Thu 30 Sep 2027 is forecast Packed. 2 cruise ships scheduled, at least 5,330 guests at double occupancy; ships in port 07:00–20:00. Nearest calmer day: Wed 29 Sep (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-2027-09-30 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Which week of September is quietest in Lisbon?
Late September is the month's quietest stretch in Lisbon — the typical day at 65%, against 85% in early September.
Can't move the dates? How to avoid the worst crowds
- The heaviest port day is Thu 30 Sep — 2 ships in at once. See the marquee sights on a lighter day, or be there for opening time.
- 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.
September weather in Lisbon
Comfortably warm — around 26°C / 79°F, easy shirtsleeve weather, with rain on about 6 days.
Book beds and the big-ticket sights well ahead, and start your days by eight — in a month this full, the early hours are the only uncrowded ones.
More about Lisbon in September
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.
