Updated 16 Sep 2026 · recomputed nightly
Is May 2027 a good month to visit Lisbon?
Lively — the typical May day in Lisbon is busier than 58% of its year.
If you are coming for something that only happens in May, that is the trade. If not, January is quieter.
Calm · Lively · Busy · Packed rank a day against Lisbon's own year — not a headcount.
May 2027 is a shoulder month in Lisbon: warm and dry, around 24°C / 75°F, Lively on 11 of 31 days — 14 days run Busy or Packed.
Yes. The typical May day in Lisbon is Lively, and 14 of the 31 days in our window run Busy or Packed. Expect around 24 °C by day, with rain on about 4 days. The crowd comes with the school holidays in Germany and France. Cruise ships call on 19 of the 31 days, 2 at once on Tuesday 25 May. Mid May is the month's quietest stretch in Lisbon — the typical day at 54%, against 68% in late May. The crush is at Belem's monument mile; the quiet is at the Gulbenkian and its gardens. The calmest day is Tuesday 11 May, the busiest Saturday 15 May.
In short, a solid middle-ground pick.
Among the 12 months we forecast for Lisbon, May ranks 6th for crowd pressure. Its heaviest day is Sat 15 May, busier than 99% of the year; its lightest is Tue 11 May at 36%.
⚠︎ Weekends run heavy — the 8th, 9th, 15th, 16th, 23rd and 30th 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 →
An easy month to pack for — rain on 4 of 31 days.
Paper keeps working when the phone is flat and the signal is gone.
See Lisbon guides →
The one thing you wear all day, every day of the trip.
See walking shoes →
How busy is Lisbon in May?
The busiest days are the 4th, 15th, 23rd and 25th, and 10 more. Away from those, most days sit Lively. The calmest stretch is the 5th–7th.
Cruise ships are in port on 19 of 31 days; the heaviest is Tue 25 May, 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 36% of the year and its heaviest at 99%, so where you land inside it matters. Daylight runs about 14 hours.
Either side of it, April picks up and June is a little calmer.
Weekends run heavy — the 8th, 9th, 15th, 16th, 23rd and 30th all sit Busy or Packed. If your dates can flex, a midweek arrival is the single easiest win.
Sat 01 May Lively busier than 49% of days here · ⚓1 · Portugal public holiday
- SeaDream I — guest capacity 112 02:00–?
Record Lisbon on Sat 1 May 2027 is forecast Lively. Why: Portugal public holiday; Germany public holiday; France public holiday. 1 cruise ship scheduled, at least 112 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 02 May Lively busier than 41% of days here · France school holidays
Record Lisbon on Sun 2 May 2027 is forecast Lively. Why: France school holidays; Spain public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 03 May Busy busier than 74% of days here · ⚓1 · UK public holiday
- Celebrity Eclipse — guest capacity 2,850 09:00–16:00
Record Lisbon on Mon 3 May 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,850 guests at double occupancy; ships in port 09:00–16:00. Why: UK public holiday. Nearest calmer day: Sun 2 May (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-2027-05-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 04 May Packed busier than 97% of days here · ⚓2
- Celebrity Apex — guest capacity 2,918 11:00–22:00
- Ventura — guest capacity 3,078
Record Lisbon on Tue 4 May 2027 is forecast Packed. 2 cruise ships scheduled, at least 5,996 guests at double occupancy. Nearest calmer day: Mon 3 May (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-2027-05-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 05 May Lively busier than 58% of days here · ⚓2
- Silver Spirit — guest capacity 608 18:00–?
- Viking Sky — guest capacity 928
Record Lisbon on Wed 5 May 2027 is forecast Lively. 2 cruise ships scheduled, at least 1,536 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 06 May Lively busier than 42% of days here · Germany public holiday
Record Lisbon on Thu 6 May 2027 is forecast Lively. Why: Germany public holiday; France public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 07 May Lively busier than 42% of days here · Germany school holidays
Record Lisbon on Fri 7 May 2027 is forecast Lively. Why: school holidays in Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 08 May Packed busier than 87% of days here · ⚓2 · Germany school holidays
- Costa Serena — guest capacity 3,014 08:00–16:00
- Seven Seas Grandeur — guest capacity 754 07:00–16:00
Record Lisbon on Sat 8 May 2027 is forecast Packed. 2 cruise ships scheduled, at least 3,768 guests at double occupancy; ships in port 07:00–16:00. Why: Germany school holidays; France public holiday. Nearest calmer day: Fri 7 May (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-2027-05-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 09 May Busy busier than 77% of days here · ⚓2 · Germany school holidays
- Artania — guest capacity 1,188 09:00–20:00
- Marella Explorer 2 — guest capacity 1,814 08:00–16:00
Record Lisbon on Sun 9 May 2027 is forecast Busy. 2 cruise ships scheduled, at least 3,002 guests at double occupancy; ships in port 08:00–20:00. Why: school holidays in Germany and France. Nearest calmer day: Mon 10 May (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-2027-05-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 10 May Lively busier than 54% of days here · ⚓1 · Germany school holidays
- Oceania Marina — guest capacity 1,258 08:00–17:00
Record Lisbon on Mon 10 May 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,258 guests at double occupancy; ships in port 08:00–17:00. Why: school holidays in Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 11 May Calm busier than 36% of days here · Germany school holidays
Record Lisbon on Tue 11 May 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 12 May Busy busier than 83% of days here · ⚓2 · Germany school holidays
- Queen Anne — guest capacity 2,996
- Silver Dawn — guest capacity 576 07:00–19:00
Record Lisbon on Wed 12 May 2027 is forecast Busy. 2 cruise ships scheduled, at least 3,572 guests at double occupancy. Why: school holidays in Germany and France. Nearest calmer day: Tue 11 May (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-2027-05-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 13 May Calm busier than 36% of days here · ⚓3 · Germany school holidays
- Balmoral — size unknown (uncounted)
- Freedom Of The Seas — size unknown (uncounted)
- Star Explorer — guest capacity 196 06:00–17:00
Record Lisbon on Thu 13 May 2027 is forecast Calm. Why: school holidays in Germany and France. 3 cruise ships scheduled, at least 196 guests at double occupancy, plus 2 of unknown size. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 14 May Calm busier than 38% of days here · Germany school holidays
Record Lisbon on Fri 14 May 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 15 May Packed busier than 99% of days here · ⚓3 · Germany school holidays
- AIDAperla — guest capacity 3,286 10:00–20:00
- Mein Schiff 1 — guest capacity 2,534 09:00–22:00
- Seven Seas Mariner — guest capacity 708 07:00–17:00
Record Lisbon on Sat 15 May 2027 is forecast Packed. 3 cruise ships scheduled, at least 6,528 guests at double occupancy; ships in port 07:00–22:00. Why: school holidays in Germany and France. Nearest calmer day: Fri 14 May (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-2027-05-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 16 May Busy busier than 81% of days here · ⚓2 · Germany public holiday
- Norwegian Dawn — guest capacity 2,340 06:00–16:00
- Seven Seas Prestige — guest capacity 850 12:00–17:00
Record Lisbon on Sun 16 May 2027 is forecast Busy. 2 cruise ships scheduled, at least 3,190 guests at double occupancy; ships in port 06:00–17:00. Why: Germany public holiday; France school holidays. Nearest calmer day: Mon 17 May (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-2027-05-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 17 May Lively busier than 44% of days here · Germany public holiday
Record Lisbon on Mon 17 May 2027 is forecast Lively. Why: Germany public holiday; France public holiday; Spain public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 18 May Lively busier than 40% of days here · Germany school holidays
Record Lisbon on Tue 18 May 2027 is forecast Lively. Why: school holidays in Germany and France. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 19 May Busy busier than 75% of days here · ⚓1 · Germany school holidays
- Ventura — guest capacity 3,078
Record Lisbon on Wed 19 May 2027 is forecast Busy. 1 cruise ship scheduled, at least 3,078 guests at double occupancy. Why: school holidays in Germany. Nearest calmer day: Tue 18 May (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-2027-05-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 20 May Lively busier than 63% of days here · ⚓1 · Germany school holidays
- Carnival Miracle — guest capacity 2,124 07:00–18:00
Record Lisbon on Thu 20 May 2027 is forecast Lively. 1 cruise ship scheduled, at least 2,124 guests at double occupancy; ships in port 07:00–18:00. 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-2027-05-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 21 May Busy busier than 78% of days here · ⚓1 · Germany school holidays
- Celebrity Xcel — guest capacity 3,260 09:00–19:00
Record Lisbon on Fri 21 May 2027 is forecast Busy. 1 cruise ship scheduled, at least 3,260 guests at double occupancy; ships in port 09:00–19:00. Why: school holidays in Germany. Nearest calmer day: Thu 20 May (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-2027-05-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 22 May Calm busier than 38% of days here · Germany school holidays
Record Lisbon on Sat 22 May 2027 is forecast Calm. Why: school holidays in Germany. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 23 May Packed busier than 93% of days here · ⚓2 · Germany school holidays
- Celebrity Equinox — guest capacity 2,852 09:00–18:00
- Marella Explorer 2 — guest capacity 1,814 08:00–16:00
Record Lisbon on Sun 23 May 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 Germany. Nearest calmer day: Sat 22 May (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-2027-05-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 24 May Calm busier than 36% of days here · Germany school holidays
Record Lisbon on Mon 24 May 2027 is forecast Calm. Why: school holidays in Germany. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 25 May Packed busier than 99% of days here · ⚓2 · Germany school holidays
- MSC Meraviglia — guest capacity 4,488 07:00–18:00
- Queen Victoria — guest capacity 2,074
Record Lisbon on Tue 25 May 2027 is forecast Packed. 2 cruise ships scheduled, at least 6,562 guests at double occupancy. Why: school holidays in Germany. Nearest calmer day: Mon 24 May (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-2027-05-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 26 May Packed busier than 89% of days here · ⚓2 · Germany school holidays
- Ambience — guest capacity 1,596
- Mein Schiff 1 — guest capacity 2,534 09:00–19:00
Record Lisbon on Wed 26 May 2027 is forecast Packed. 2 cruise ships scheduled, at least 4,130 guests at double occupancy. Why: school holidays in Germany. Nearest calmer day: Mon 24 May (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-2027-05-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 27 May Packed busier than 87% of days here · ⚓1 · Portugal public holiday
- Mariner Of The Seas — guest capacity 3,334
Record Lisbon on Thu 27 May 2027 is forecast Packed. 1 cruise ship scheduled, at least 3,334 guests at double occupancy. Why: Portugal public holiday; Germany public holiday; Spain public holiday. Nearest calmer day: Fri 28 May (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-2027-05-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 28 May Calm busier than 36% of days here · Germany school holidays
Record Lisbon on Fri 28 May 2027 is forecast Calm. Why: school holidays in Germany. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 29 May Lively busier than 48% of days here · ⚓1 · Germany school holidays
- Azamara Journey — guest capacity 710 06:00–17:00
Record Lisbon on Sat 29 May 2027 is forecast Lively. 1 cruise ship scheduled, at least 710 guests at double occupancy; ships in port 06:00–17:00. 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-2027-05-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 30 May Busy busier than 68% of days here · ⚓1 · Spain public holiday
- Norwegian Dawn — guest capacity 2,340 06:00–16:00
Record Lisbon on Sun 30 May 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,340 guests at double occupancy; ships in port 06:00–16:00. Why: Spain public holiday. Nearest calmer day: Sat 29 May (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-2027-05-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 31 May Lively busier than 42% of days here · UK public holiday
Record Lisbon on Mon 31 May 2027 is forecast Lively. Why: UK public holiday; Spain public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/lisbon/#d-2027-05-31 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of May is quietest in Lisbon?
Mid May is the month's quietest stretch in Lisbon — the typical day at 54%, against 68% in late May.
Can't move the dates? How to avoid the worst crowds
- The heaviest port day is Tue 25 May — 2 ships in at once. See the marquee sights on a lighter day, or be there for opening time.
- Need flexibility? The 5th–7th 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.
May weather in Lisbon
Comfortably warm — around 24°C / 75°F, easy shirtsleeve weather, with rain on only about 4 days. The days are long too — close to 14 hours of light — so the evenings stay open for walking once the heat drops.
Worth booking the marquee sights ahead for the busy days, but you can keep the rest of the trip flexible.
More about Lisbon in May
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.
