Measured, not vibes
Best Time to Visit London
By measured weather comfort, the top months for London are August, July, June — and RouteVerdict's editorial pick, which also weighs crowds and prices, is May, June, September, December. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at London (25 m elevation).
Month by month
London weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 7.9°C / 46°F | 9.7 | 20 | |
| February | 10.1°C / 50°F | 10.5 | 28 | |
| March | 11.4°C / 53°F | 11.5 | 34 | |
| April | 13.9°C / 57°F | 7.3 | 51 | Shoulder |
| May | 17.6°C / 64°F | 9.3 | 68 | |
| June | 21.2°C / 70°F | 9.2 | 80 | Best |
| July | 22.5°C / 73°F | 9.3 | 81 | Best |
| August | 22.8°C / 73°F | 6.5 | 87 | Best |
| September | 20.5°C / 69°F | 9.3 | 78 | |
| October | 16°C / 61°F | 13.2 | 54 | Shoulder |
| November | 11.4°C / 53°F | 9.3 | 36 | |
| December | 8.8°C / 48°F | 9.8 | 23 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
FAQ
London timing questions
What is the best month to visit London?
By measured weather comfort (ERA5 2020–2024), the top months are August, July, and June, with August scoring highest. RouteVerdict's editorial pick is May, June, September, and December, which also weighs crowds, prices, and events.
What is the hottest month in London?
August, with an average daily high of 22.8°C (73°F).
What is the rainiest month in London?
October, averaging 13.2 days with at least 1 mm of precipitation.
When is shoulder season in London?
October and April — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.