September history in London

United Kingdom · Compare three complete years with the current year to date.

Month

Year

19°C

19°C

17°C

27°C

12°C

29.8 mm

24.5 km/h

Daily minimum, mean and maximum

Date	Mean (°C)	Maximum (°C)	Minimum (°C)
2026-09-01	18	23	14
2026-09-02	19	21	17
2026-09-03	22	26	19
2026-09-04	20	21	16
2026-09-05	18	23	13
2026-09-06	21	27	16
2026-09-07	21	24	18
2026-09-08	16	19	14
2026-09-09	16	19	12
2026-09-10	17	20	14
2026-09-11	19	22	16
2026-09-12	19	24	13
2026-09-13	20	23	18
2026-09-14	21	25	18
2026-09-15	19	22	17
2026-09-16	17	20	14
2026-09-17	17	21	14
2026-09-18	16	20	12
2026-09-19	19	22	17
2026-09-20	18	20	16
2026-09-21	17	23	12
2026-09-22	21	25	16
2026-09-23	20	23	16
2026-09-24	17	22	13
2026-09-25	18	24	14
2026-09-26	17	21	13
2026-09-27	18	22	14
2026-09-28	17	20	14
2026-09-29	21	25	16
2026-09-30	22	24	19

Daily precipitation total

WMO-defined direct sunshine hours

Daily mean relative humidity

Daily maximum wind speed

Source values for September 2026; unavailable readings are shown as gaps.

Date	Conditions	Min / max (°C)	Rain (mm)	Sun (h)	Humidity (%)	Wind (km/h)
2026-09-01	Overcast	14 / 23	0.0	12.1	58.0	15.1
2026-09-02	Drizzle	17 / 21	1.5	2.0	74.0	21.2
2026-09-03	Overcast	19 / 26	0.0	4.9	72.0	20.9
2026-09-04	Drizzle	16 / 21	0.8	0.8	69.0	24.5
2026-09-05	Overcast	13 / 23	0.0	12.6	58.0	13.7
2026-09-06	Overcast	16 / 27	0.0	10.0	53.0	16.9
2026-09-07	Overcast	18 / 24	0.0	5.9	62.0	16.9
2026-09-08	Rain	14 / 19	20.5	1.3	80.0	17.3
2026-09-09	Overcast	12 / 19	0.0	10.3	62.0	13.7
2026-09-10	Overcast	14 / 20	0.0	8.3	60.0	16.6
2026-09-11	Drizzle	16 / 22	1.3	10.3	70.0	15.5
2026-09-12	Drizzle	13 / 24	0.1	9.0	69.0	19.1
2026-09-13	Drizzle	18 / 23	1.1	1.1	84.0	14.4
2026-09-14	Rain	18 / 25	1.7	7.0	82.0	15.8
2026-09-15	Overcast	17 / 22	0.0	6.5	66.0	16.2
2026-09-16	Overcast	14 / 20	0.0	7.9	62.0	14.8
2026-09-17	Drizzle	14 / 21	1.4	5.5	64.0	18.4
2026-09-18	Drizzle	12 / 20	0.6	6.8	67.0	20.9
2026-09-19	Overcast	17 / 22	0.0	2.5	74.0	20.5
2026-09-20	Overcast	16 / 20	0.0	8.2	58.0	16.9
2026-09-21	Overcast	12 / 23	0.0	10.0	52.0	6.8
2026-09-22	Overcast	16 / 25	0.0	9.1	60.0	12.2
2026-09-23	Overcast	16 / 23	0.0	8.2	62.0	13.7
2026-09-24	Overcast	13 / 22	0.0	8.9	66.0	10.4
2026-09-25	Overcast	14 / 24	0.0	10.4	69.0	14.8
2026-09-26	Overcast	13 / 21	0.0	10.0	50.0	11.9
2026-09-27	Drizzle	14 / 22	0.2	2.5	71.0	18.4
2026-09-28	Overcast	14 / 20	0.0	3.9	70.0	14.8
2026-09-29	Drizzle	16 / 25	0.1	7.0	76.0	16.2
2026-09-30	Drizzle	19 / 24	0.5	6.8	63.0	17.3