16.09
wed
wed
Day
64°F
SE 9 mph
Precip.
10%
10%
Night
59°F
E 9 mph
Precip.
16%
16%
17.09
thu
thu
Day
59°F
NE 11 mph
Precip.
29%
29%
Night
57°F
E 8 mph
Precip.
12%
12%
18.09
fri
fri
Day
63°F
E 9 mph
Precip.
10%
10%
Night
61°F
NE 11 mph
Precip.
26%
26%
19.09
sat
sat
Day
70°F
NE 13 mph
Precip.
15%
15%
Night
63°F
E 9 mph
Precip.
10%
10%
20.09
sun
sun
Day
66°F
E 5 mph
Precip.
10%
10%
Night
63°F
E 4 mph
Precip.
4%
4%
21.09
mon
mon
Day
70°F
SE 7 mph
Precip.
9%
9%
Night
64°F
W 4 mph
Precip.
7%
7%
22.09
tue
tue
Day
70°F
SW 5 mph
Precip.
9%
9%
Night
63°F
W 4 mph
Precip.
9%
9%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 66.5°F. The highest and lowest sea temperatures during the month were 67.1°F and 65.7°F.
Air temperature in London, °F
Precipitation total in London, in.
* Charts above show average data for the last 3 years.
Best time for vacation in London
London on a weather map
Places in United Kingdom:
Name
°F
24 Hours Forecast
London
Local time: 03:53
September 16, wednesday
0600
55°F
SE
8 mph
8 mph
0900
59°F
SE
9 mph
9 mph
1200
64°F
SE
9 mph
9 mph
1500
63°F
E
9 mph
9 mph
1800
63°F
E
7 mph
7 mph
2100
63°F
E
9 mph
9 mph
September 17, thursday
0000
59°F
E
9 mph
9 mph
0300
57°F
NE
9 mph
9 mph
