London: Weather Guide & Climate
Complete month-by-month weather guide: London. Best time to visit: May, June, September. Plan your trip with detailed climate data.
Climate Overview
London has a moderate climate with average yearly highs of 15°C, lows of 8°C, and approximately 11 rainy days per month.
The best time to visit London is during May, June, September, when conditions are perfect for sightseeing and exploration
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Air Quality
Best Time
May, Jun, Sep
Hottest
Coldest
Driest Month
Forecast for your trip dates
Up to 16 days ahead| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 9°C | 4°C | 12 | Good |
| February | 10°C | 4°C | 15 | Wet |
| March | 11°C | 3°C | 10 | Good |
| April | 17°C | 6°C | 5 | Good |
| May | 19°C | 8°C | 1 | Excellent (best) |
| June | 20°C | 12°C | 18 | Excellent (best) |
| July | 22°C | 13°C | 10 | Good |
| August | 23°C | 15°C | 11 | Good |
| September | 20°C | 11°C | 6 | Excellent (best) |
| October | 14°C | 8°C | 20 | Wet |
| November | 12°C | 6°C | 10 | Good |
| December | 8°C | 3°C | 13 | Wet |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
Weather by Season
Winter
Dec–Feb
High: 9°C
Low: 4°C
Rainy days: 13 days/month
Spring
Mar–May
High: 16°C
Low: 6°C
Rainy days: 5 days/month
Summer
Jun–Aug
High: 22°C
Low: 13°C
Rainy days: 13 days/month
Autumn
Sep–Nov
High: 15°C
Low: 8°C
Rainy days: 12 days/month
Month-by-Month Weather Table
January
February
March
April
May
BestJune
BestJuly
August
September
BestOctober
November
December
| Month | High | Low | Rainy days | Condition | View Details |
|---|---|---|---|---|---|
| January | 9°C | 4°C | 12 | Good | View Details → |
| February | 10°C | 4°C | 15 | Wet | View Details → |
| March | 11°C | 3°C | 10 | Good | View Details → |
| April | 17°C | 6°C | 5 | Good | View Details → |
| May (best) | 19°C | 8°C | 1 | Excellent | View Details → |
| June (best) | 20°C | 12°C | 18 | Excellent | View Details → |
| July | 22°C | 13°C | 10 | Good | View Details → |
| August | 23°C | 15°C | 11 | Good | View Details → |
| September (best) | 20°C | 11°C | 6 | Excellent | View Details → |
| October | 14°C | 8°C | 20 | Wet | View Details → |
| November | 12°C | 6°C | 10 | Good | View Details → |
| December | 8°C | 3°C | 13 | Wet | View Details → |
London
A global metropolis blending royal heritage with Big Ben, Parliament, and the British Museum, cutting-edge culture, and diverse neighborhoods.
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Common Questions
What type of climate does London have?
London has a Moderate climate with average yearly temperatures of 15°C (highs) and 8°C (lows).
When is the best time to visit London?
The best time to visit London is during May, June, September, when temperatures average around 19°C and conditions are ideal for sightseeing.
What are the hottest and coldest months in London?
The hottest month in London is August with average highs of 23°C, while the coldest is March with average lows of 3°C.
When is the rainy season in London?
London sees the most rain in October (20 rainy days), while May is the driest month (1 rainy days).