Best Time to Visit London: Weather Month by Month

Q: What is the best time to visit London?

July is the best month with 22.0°C highs, 14.0°C lows, 7.0h of sunshine and 25.0% rainy days. The months of July & August offer comparable conditions.

Q: How many hours of sunshine does London get in July?

London averages 7.0 sunshine hours per day in July. It is the sunniest month with a climate score of 7.4/10.

Q: What is the rainiest month in London?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

Q: What are the temperatures at night in London in July?

In July, overnight lows reach 14.0°C, while afternoon highs average 22.0°C.

Q: Is London good in winter?

In winter (December-February), London scores 2.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 7.4/10.

Q: When should you avoid London?

January is the most difficult month to visit London, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Decide

When to visit London?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In London, July and August clearly stand out. January concentrates the least favourable conditions.

Top & avoid

🏆 July · 7.9 August · 7.9 June · 7.7 May · 7.4 ⚠️ January · 0.9

0.9

Jan

4.0

Feb

4.1

Mar

4.3

Apr

7.4

May

7.7

Jun

7.9

Jul

7.9

Aug

7.4

Sep

4.3

Oct

4.0

Nov

1.0

Dec

Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

London offers 5 comfortable months, with 2 months to avoid (January, December). The gap is sharp: 7.9 in July vs 0.9 in January.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

Compare the 12 months By your project

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 5 comfortable months (May · Jun · Jul · Aug · Sep)

Month	T° min	T° max	Rain %	mm/day	Sun	Score	Verdict
🌧️ January →	2°C	8°C	37%	2.0mm	2.0h	0.9/10	Tough conditions
🌥️ February →	3°C	10°C	34%	1.9mm	2.8h	4.0/10	Decent period
🌥️ March →	4°C	11°C	27%	1.8mm	4.0h	4.1/10	Decent period
🌥️ April →	5°C	14°C	29%	1.3mm	5.9h	4.3/10	Decent period
⛅ May →	9°C	18°C	26%	1.8mm	6.7h	7.4/10	Best period
☀️ June →	12°C	21°C	28%	2.1mm	6.9h	7.7/10	Best period
☀️ July →	14°C	22°C	25%	1.9mm	7.0h	7.9/10	Best period
☀️ August →	14°C	22°C	27%	1.6mm	6.5h	7.9/10	Best period
⛅ September →	12°C	19°C	26%	2.1mm	5.2h	7.4/10	Best period
🌥️ October →	9°C	16°C	35%	2.5mm	3.7h	4.3/10	Decent period
🌥️ November →	5°C	11°C	37%	2.3mm	2.4h	4.0/10	Decent period
🌧️ December →	4°C	9°C	35%	2.2mm	1.8h	1.0/10	Tough conditions

🌧️ January

0.9/10

T°2°C / 8°C

Rain %37%

T°3°C / 10°C

Rain %34%

Sun2.8h

Decent period

🌥️ March

4.1/10

T°4°C / 11°C

Rain %27%

Sun4.0h

Decent period

🌥️ April

4.3/10

T°5°C / 14°C

Rain %29%

Sun5.9h

Decent period

⛅ May

7.4/10

T°9°C / 18°C

Rain %26%

Best period

Rain %28%

Best period

Rain %25%

Best period

Rain %27%

Best period

Rain %26%

Best period

T°9°C / 16°C

Rain %35%

Sun3.7h

Decent period

🌥️ November

4.0/10

T°5°C / 11°C

Rain %37%

Sun2.4h

Decent period

🌧️ December

1.0/10

T°4°C / 9°C

Rain %35%

Sun1.8h

Tough conditions

📊 Quick read

Optimal window

May → Sep

Good transition

Apr · Oct

Tough period

Jan · Dec

🌡️ Detailed conditions (July)

🌡️ Feel

Comfortable

☀️ UV

4.5 · Moderate

💧 Humidity feel

12°C · Dry

☔ Rain

25% · 1.9 mm/day

🌅 Sunshine

7.0h/day

Week by week

London week by week: your odds of avoiding rain

For each week of the year: in how many years out of 10 it was mostly dry (at most 2 rainy days), 2016 to 2025.

Safest week: May 28 to Jun 3, mostly dry in 9 years out of 10 (1.6 rainy day(s) on average).

Most exposed: Jan 1 to Jan 7, mostly dry in 2 years out of 10 (3.3 rainy days on average).

Number = years out of 10 with at most 2 rainy days in the week. Source: ERA5 reanalysis (ECMWF) via Open-Meteo, daily data 2016-2025. Rainy day = at least 1 mm, as everywhere on the site.
Jan	Jan 12/108°C	Jan 85/107°C	Jan 156/106°C	Jan 224/108°C	Jan 297/109°C
Feb	Feb 56/108°C	Feb 125/1010°C	Feb 196/1011°C	Feb 264/109°C
Mar	Mar 57/1010°C	Mar 127/1011°C	Mar 198/1012°C	Mar 266/1013°C
Apr	Apr 25/1014°C	Apr 97/1014°C	Apr 168/1015°C	Apr 236/1014°C	Apr 308/1016°C
May	May 76/1018°C	May 147/1018°C	May 216/1019°C	May 289/1020°C
Jun	Jun 47/1019°C	Jun 116/1022°C	Jun 186/1023°C	Jun 256/1022°C
Jul	Jul 26/1022°C	Jul 97/1022°C	Jul 168/1024°C	Jul 236/1023°C	Jul 307/1023°C
Aug	Aug 66/1024°C	Aug 137/1023°C	Aug 209/1022°C	Aug 277/1021°C
Sep	Sep 37/1022°C	Sep 108/1020°C	Sep 177/1020°C	Sep 246/1018°C
Oct	Oct 16/1017°C	Oct 86/1016°C	Oct 153/1016°C	Oct 226/1015°C	Oct 294/1013°C
Nov	Nov 56/1012°C	Nov 126/1012°C	Nov 194/1010°C	Nov 266/108°C
Dec	Dec 33/109°C	Dec 107/108°C	Dec 174/1010°C	Dec 246/109°C

A specific date? The app computes the same figure day by day.

10-year trend

Annual temperatures — London

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🏖️ Beaches: Jun-Sept🌊 Swell: Sept-Mar🚤 Water activities

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🏨

Stay

Hotels & rentals · London

Expedia →

🎟️

Activities

Tours, tickets, experiences

See ↓

✈️

Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · London

GetYourGuide selection · free cancellation

See all →

Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · United Kingdom

🗣️LanguageEnglish

💶CurrencyPound Sterling (£)

🚗DrivingLeft-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘExpensive · 4/5

🌡️ Climate

🌍Climate typeTemperate oceanic

📈Climate trend ⓘ+1.35°C/decade

🔥Hottest monthJuly · 22°C

❄️Coolest monthJanuary · 8°C

🌧️Rainiest month ⓘJanuary · 37%

🏖️ Beach holiday

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

Explore

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Guides & rankings

World ranking 2026See →

Best summer destinationsSee →

Winter sunSee →

Where to go in JulySee →

🗺️ Climate map of 754 destinations

Location

Where is London ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Temperate oceanic climate with a 7.9 → 0.9 gap between best and worst month. 10 years of ERA5 data to choose by project.

51.51°N · 0.13°W

Questions

Frequently asked questions

What is the best time to visit London?

July is the best month with 22.0°C highs, 14.0°C lows, 7.0h of sunshine and 25.0% rainy days. The months of July & August offer comparable conditions.

How many hours of sunshine does London get in July?

London averages 7.0 sunshine hours per day in July. It is the sunniest month with a climate score of 7.4/10.

What is the rainiest month in London?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in London in July?

In July, overnight lows reach 14.0°C, while afternoon highs average 22.0°C.

Is London good in winter?

In winter (December-February), London scores 2.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 7.4/10.

When should you avoid London?

January is the most difficult month to visit London, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.