Updated 2 Nov 2026 · recomputed nightly
Is May 2027 a good month to visit London?
Calm — the typical May day in London is calmer than 62% of its year.
The weather is the trade-off here, not the crowds.
Calm · Lively · Busy · Packed rank a day against London's own year — not a headcount.
May is London with the crowds gone — Calm on 20 of 31 days — 3 days run Busy or Packed, mild and wet, around 17°C / 63°F with rain on about 11 days.
Yes, if the weather does not put you off. The typical May day in London is Calm, and only 3 of the 31 days in our window run Busy or Packed. Expect around 17 °C by day, with rain on about 11 days. The crowd comes with the school holidays in Germany and France. Cruise ships call on 10 of the 31 days, 2 at once on Monday 17 May. Heart Failure 2027 (ESC Heart Failure Association congress) falls on 22–25 May. Mid May is the month's quietest stretch in London — the typical day at 35%, against 40% in late May. The crush is at Westminster Bridge and Parliament Square; the quiet is at the royal parks' chain.
In short, quiet and wide open, if the weather doesn't put you off.
Among the 12 months we forecast for London, May ranks 9th for crowd pressure. Its heaviest day is Sat 15 May, busier than 88% of the year; its lightest is Tue 4 May at 32%.
You won't need skip-the-line tickets here — that's rather the point. A month like this is the one for the longer visit — the guided walk, the food tour, the day out of town, with room and time to enjoy them. see what's on →
Pack for wet first — rain on 11 of 31 days.
A folding one lives in the day bag and weighs nothing.
See umbrellas →
Wet stone is the thing to plan around in a month this wet.
See walking shoes →
How busy is London in May?
The busiest days are the 15th, 17th and 22nd. Away from those, most days sit Calm. The calmest stretch is the 1st–14th.
Ships call on 10 of 31 days, a typical call day carrying at least 343 guests between them — real, but a secondary part of the crowd here; the season moves the needle more.
The month is not one thing: its lightest day sits at 32% of the year and its heaviest at 88%, so where you land inside it matters. Daylight runs about 15 hours.
Either side of it, April picks up.
Calm apart from 3 days — the 15th, 17th and 22nd, which run packed or busier. Any other date works.
Sat 01 May Lively busier than 57% of days here · ⚓1 · Germany public holiday
- Ambience — guest capacity 1,596 09:00–17:00
Record London on Sat 1 May 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,596 guests at double occupancy; ships in port 09:00–17:00. 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/london/#d-2027-05-01 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 02 May Calm busier than 38% of days here · France school holidays
Record London on Sun 2 May 2027 is forecast Calm. Why: France school holidays; Spain public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-02 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 03 May Lively busier than 55% of days here · ⚓1 · UK public holiday
- Ambience — guest capacity 1,596 08:00–17:00
Record London on Mon 3 May 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,596 guests at double occupancy; ships in port 08:00–17:00. Why: UK public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-03 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 04 May Calm busier than 32% of days here
Record London on Tue 4 May 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-04 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 05 May Calm busier than 32% of days here
Record London on Wed 5 May 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-05 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 06 May Lively busier than 40% of days here · ⚓1 · Germany public holiday
- Star Pride — guest capacity 343 16:00–02:00
Record London on Thu 6 May 2027 is forecast Lively. Why: Germany public holiday; France public holiday. 1 cruise ship scheduled, at least 343 guests at double occupancy; ships in port 16:00–02:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-06 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 07 May Calm busier than 39% of days here · ⚓1 · Germany school holidays
- Star Pride — guest capacity 343 15:00–?
Record London on Fri 7 May 2027 is forecast Calm. Why: school holidays in Germany and France. 1 cruise ship scheduled, at least 343 guests at double occupancy. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-07 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 08 May Calm busier than 39% of days here · United States public holiday
Record London on Sat 8 May 2027 is forecast Calm. Why: United States public holiday; Germany school holidays; France public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-08 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 09 May Calm busier than 37% of days here · ⚓1 · Germany school holidays
- Le Bellot — guest capacity 184 03:00–17:00
Record London on Sun 9 May 2027 is forecast Calm. Why: school holidays in Germany and France. 1 cruise ship scheduled, at least 184 guests at double occupancy; ships in port 03:00–17:00. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-09 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 10 May Calm busier than 38% of days here · ⚓1 · Germany school holidays
- Star Pride — guest capacity 343 06:00–17:00
Record London on Mon 10 May 2027 is forecast Calm. Why: school holidays in Germany and France. 1 cruise ship scheduled, at least 343 guests at double occupancy; ships in port 06:00–17:00. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-10 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 11 May Calm busier than 34% of days here · Germany school holidays
Record London 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/london/#d-2027-05-11 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 12 May Calm busier than 34% of days here · ⚓1 · Germany school holidays
- World Voyager — guest capacity 196 19:00–?
Record London on Wed 12 May 2027 is forecast Calm. Why: school holidays in Germany and France. 1 cruise ship scheduled, at least 196 guests at double occupancy. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-12 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 13 May Calm busier than 34% of days here · Germany school holidays
Record London on Thu 13 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/london/#d-2027-05-13 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 14 May Calm busier than 35% of days here · Germany school holidays
Record London 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/london/#d-2027-05-14 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 15 May Packed busier than 88% of days here · ⚓1 · Germany school holidays · Guinness Women's Six Nations 2027: England (Red Roses) v France at Twickenham
Event on this day
Guinness Women's Six Nations 2027: England (Red Roses) v France at Twickenham
15 May 2027- Ambience — guest capacity 1,596 08:00–18:00
Record London on Sat 15 May 2027 is forecast Packed. 1 cruise ship scheduled, at least 1,596 guests at double occupancy; ships in port 08:00–18:00. Why: school holidays in Germany and France; Guinness Women's Six Nations 2027: England v France at Twickenham. 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/london/#d-2027-05-15 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 16 May Calm busier than 37% of days here · Germany public holiday
Record London on Sun 16 May 2027 is forecast Calm. Why: Germany public holiday; France school holidays. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-16 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 17 May Packed busier than 87% of days here · ⚓2 · Germany public holiday
- Ambience — guest capacity 1,596 08:00–02:00
- Star Pride — guest capacity 343 13:00–02:00
Record London on Mon 17 May 2027 is forecast Packed. 2 cruise ships scheduled, at least 1,939 guests at double occupancy; ships in port 08:00–02:00. Why: Germany public holiday; France public holiday; Spain public holiday. Nearest calmer day: Sun 16 May (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/london/#d-2027-05-17 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 18 May Calm busier than 35% of days here · Germany school holidays
Record London on Tue 18 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/london/#d-2027-05-18 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 19 May Calm busier than 38% of days here · ⚓1 · Germany school holidays
- Star Pride — guest capacity 343
Record London on Wed 19 May 2027 is forecast Calm. Why: school holidays in Germany. 1 cruise ship scheduled, at least 343 guests at double occupancy. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-19 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 20 May Calm busier than 35% of days here · Germany school holidays
Record London on Thu 20 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/london/#d-2027-05-20 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 21 May Calm busier than 35% of days here · Germany school holidays
Record London on Fri 21 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/london/#d-2027-05-21 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 22 May Busy busier than 68% of days here · ⚓1 · Germany school holidays · Heart Failure 2027 (ESC Heart Failure Association congress)
- Star Pride — guest capacity 343 04:00–16:00
Record London on Sat 22 May 2027 is forecast Busy. Why: school holidays in Germany; Heart Failure 2027. 1 cruise ship scheduled, at least 343 guests at double occupancy; ships in port 04:00–16:00. Nearest calmer day: Fri 21 May (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/london/#d-2027-05-22 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 23 May Lively busier than 64% of days here · Germany school holidays · Heart Failure 2027 (ESC Heart Failure Association congress)
Record London on Sun 23 May 2027 is forecast Lively. Why: school holidays in Germany; Heart Failure 2027. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-23 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 24 May Lively busier than 64% of days here · Germany school holidays · Heart Failure 2027 (ESC Heart Failure Association congress)
Record London on Mon 24 May 2027 is forecast Lively. Why: school holidays in Germany; Heart Failure 2027. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-24 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 25 May Lively busier than 64% of days here · Germany school holidays · Heart Failure 2027 (ESC Heart Failure Association congress)
Record London on Tue 25 May 2027 is forecast Lively. Why: school holidays in Germany; Heart Failure 2027. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-25 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 26 May Calm busier than 34% of days here · Germany school holidays
Record London on Wed 26 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/london/#d-2027-05-26 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 27 May Calm busier than 39% of days here · Germany public holiday
Record London on Thu 27 May 2027 is forecast Calm. Why: Germany public holiday; Spain public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-27 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 28 May Calm busier than 34% of days here · Germany school holidays
Record London 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/london/#d-2027-05-28 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 29 May Lively busier than 47% of days here · ⚓1 · Germany school holidays
- Seven Seas Mariner — guest capacity 708 07:00–21:00
Record London on Sat 29 May 2027 is forecast Lively. 1 cruise ship scheduled, at least 708 guests at double occupancy; ships in port 07:00–21:00. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-29 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 30 May Calm busier than 36% of days here · Spain public holiday
Record London on Sun 30 May 2027 is forecast Calm. Why: Spain public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-05-30 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 31 May Lively busier than 40% of days here · ⚓1 · UK public holiday
- Star Explorer — guest capacity 196 08:00–02:00
Record London on Mon 31 May 2027 is forecast Lively. Why: UK public holiday; United States public holiday; Spain public holiday. 1 cruise ship scheduled, at least 196 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/london/#d-2027-05-31 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Which week of May is quietest in London?
Mid May is the month's quietest stretch in London — the typical day at 35%, against 40% in late May.
The upside of a quiet May
- Walk straight into the sights that sell out in high season — no timed ticket, no queue.
- This is a wing-it month: nothing needs locking in.
- Photograph the landmarks empty — the shot everyone else queues for.
No queues to skip, and nothing to book ahead — that's the whole point.
May weather in London
Mild — around 17°C / 63°F, with a light jacket for the evenings, with rain on about 11 days, so keep a layer handy. The days are long too — close to 15 hours of light — so the evenings stay open for walking once the heat drops.
This is the value month: no need to book far ahead, and the freedom to change plans on the day is part of what you're getting.
More about London in May
Based on: UK's public holidays · school vacations across France and Germany · the official overseas-visits pattern (ONS, measured 2021–2023; UK national curve) · 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.
