London weather in April
In April, London has an average high of 14 °C57 °F and an average low of 5 °C40 °F, with about 42 mm1.6 in of precipitation. It is the 7th warmest month of the year and the driest.
How April compares with other months
Compared with March, April is 2.9 °C5.3 °F warmer on average and drier by 8 mm0.3 in. Compared with May, April is 3.2 °C5.9 °F cooler on average and drier by 13 mm0.5 in. Daylight lasts about 13.8 hours around the middle of the month. Average relative humidity is 81% and the average cloud amount 68%.
Is April a good time to visit London?
April is not among the most comfortable months by our comfort score: it is cool (average high 14 °C57 °F) and nights are cold (average low 5 °C40 °F). The most comfortable months in London are June–September.
What to wear in April
For London in April, pack long sleeves, a sweater and a medium jacket.
April in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| London | 1457 | 540 | 421.6 |
| Bexley | 1457 | 540 | 421.6 |
| Slough | 1457 | 440 | 451.8 |
| Crawley | 1355 | 541 | 431.7 |
| Luton | 1356 | 439 | 441.7 |
| Southend-on-Sea | 1355 | 542 | 381.5 |
| Reading | 1457 | 440 | 471.9 |
| Basingstoke | 1356 | 439 | 471.9 |
| Milton Keynes | 1356 | 439 | 441.7 |
Other months in London
- January7 °C45 °F / 2 °C35 °F
- February8 °C46 °F / 1 °C35 °F
- March10 °C51 °F / 2 °C36 °F
- April14 °C57 °F / 5 °C40 °F
- May17 °C63 °F / 8 °C46 °F
- June21 °C69 °F / 11 °C52 °F
- July23 °C73 °F / 13 °C55 °F
- August23 °C73 °F / 13 °C55 °F
- September20 °C68 °F / 10 °C50 °F
- October15 °C60 °F / 8 °C46 °F
- November11 °C51 °F / 5 °C40 °F
- December8 °C46 °F / 3 °C37 °F
Frequently asked questions
How warm is London in April?
In April the average high in London is 14 °C (57 °F) and the average low is 5 °C (40 °F).
Does it rain a lot in London in April?
On average about 42 mm (1.6 in) of precipitation falls in April; it ranks 12th of the 12 months.
Is April the warmest month in London?
No. The warmest month in London is July, with an average high of 23 °C (73 °F). The coldest month is February, with an average low of 1 °C (35 °F).
How long is the day in London in April?
In the middle of April the day in London lasts about 13.8 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is London in April?
The average relative humidity in April is about 81%. This is a long-term average for the whole day.
How cloudy is London in April?
On average about 68% of the sky is covered by cloud in April. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.