Greater London weather live forecast

Today's maximum temperature in Greater London is expected to be 18°C. Select a day from the live weather forecast for Greater London (London), UK for more weather parameters.

Wednesday
17th Sep
18

14

0

1
Thursday
18th Sep
21

16

4

3
Friday
19th Sep
26

15

8

4
Saturday
20th Sep
22

15

3

4
Sunday
21st Sep
16

10

5

3

5-day weather forecast updated at 04:00 on Wednesday 17th September 2025 GMT

More about Greater London

Greater London by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Greater London

English Heritage: 25% off new memberships

Exclusive

Save 25% on new English Heritage memberships
Get FREE unlimited access to over 400 historic attractions
Exclusive discount applies to annual & gift memberships

Show discount code

******M25

Redeem English Heritage discount code >>

Expires at 23:59 on Wednesday 31st Dec 2025 · View all English Heritage offers

Places to visit

Destination

The 5-day weather forecast for Greater London (London) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Greater London weather forecast by day

Below are the detailed weather forecasts for Greater London for the next 5 days.

Greater London weather for Wednesday 17th September 2025

Expect mostly cloudy with light rain in Greater London with a maximum temperature of 18°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 19% chance of some rain and a moderate breeze of 21 kph from the south-west.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
1
UV index (Low)
19
% chance of some rain
<5
mm of rainfall expected
18
°C wind chill
21
kph wind from SW

Greater London weather for Thursday 18th September 2025

Expect broken clouds in Greater London with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-west.

21
°C maximum temperature
16
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
20
kph wind from SW

Greater London weather for Friday 19th September 2025

Expect scattered clouds in Greater London with a maximum temperature of 26°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

26
°C maximum temperature
15
°C minimum temperature
scattered clouds
8
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
26
°C wind chill
13
kph wind from SW

Greater London weather for Saturday 20th September 2025

Expect mostly cloudy with light rain in Greater London with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 18 kph from the south-west.

22
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
4
UV index (Moderate)
46
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
18
kph wind from SW

Greater London weather for Sunday 21st September 2025

Expect broken clouds in Greater London with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.