In general the best time to visit London is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
March, April, May, June, July, August, September usually has good weather. Average maximum temperature reaches +22°C during July.
In January, February, October, November, December the weather is average. Expect around 71 rainy days, and the precipitation amounts to approximately 68 mm in October.
Climate in London
Here is the detailed breakdown of the climate in London for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+16°C
+19°C
+23°C
+28°C
+32°C
+33°C
+39°C
+37°C
+32°C
+28°C
+18°C
+16°C
Average Maximum Temperature
+8°C
+8°C
+11°C
+14°C
+17°C
+20°C
+22°C
+22°C
+19°C
+15°C
+11°C
+8°C
Minimum Temperature
-11°C
-15°C
-5°C
-3°C
0°C
+3°C
+8°C
+7°C
+3°C
-2°C
-4°C
-13°C
Avg. water temperature
-
-
-
-
-
-
-
-
-
-
-
-
Humidity, %
80
77
74
69
69
68
68
70
74
78
81
82
Rain, mm
54
41
48
48
55
58
54
58
47
68
61
59
Snow, mm
4
3
2
1
0
0
0
0
0
0
0
3
Average wind speed, m/s
4
4
4
3
3
3
3
3
3
3
3
4
Sunny Days
2
3
4
5
5
4
5
5
4
4
3
2
Cloud Days
12
12
11
9
9
9
8
9
11
11
12
13
Rainy Days
14
12
16
15
16
15
16
16
14
16
15
14
Snowy Days
2
2
1
0
0
0
0
0
0
0
0
1
Average Temperature
Here are the average maximum and minimum temperatures in London during the whole year:
The hottest month in London is August with average maximum temperature going up to +22°C. The coldest month is January with the lowest temperatures of +3°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in London looks throughout the year, in %:
The most humid month in London is December with average humidity going up to 82%. The least humid month is June with an average humidity of 68%.
Rain
Amount of rainfall in mm. in London during the whole year based on historical data:
The sunniest and driest month is April with approximately 5 sunny days and a total precipitation of around 48 mm. The rainiest and wettest month is October with approximately 16 rainy days and 68 mm of total precipitation.
Snow
Amount of snow in mm. in London during the whole year based on historical data:
The snowiest month is January with approximately 2 snowy days.
FAQ
Frequently asked questions about the weather in London:
What is the hottest month in London?
The hottest month in London is August with average maximum temperature of +22°C.
What is the coldest month in London?
The coldest month in London is January with minimum temperatures of +3°C.
Is London worth visiting in winter?
Winter in London could be a good time to visit, as the weather is generally ok.
When does it rain the least in London?
if you're looking to visit London when it rains the least, you should plan your trip for October, November, December. During this time, rainfall is rare with the driest month being February with only 41 mm of rain.
Other cities in United Kingdom
Check out the weather for other cities in United Kingdom.
For this page, we’ve looked at the typical weather in London, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.