United States · 1991–2020

Best time to visit
London.

October leads for comfortable weather in London: typically 25.8°C by day, 11.6°C at night, with 12 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high25.8°C

Typical low11.6°C

Rain in October12 mm

Comfort

October

October · April · May

88climate match

Beach

June

June · July · September

79climate match

Outdoors

March

March · November · April

91climate match

The weakest month is January, scoring 41 against October’s 88 — days reach only 13.5°C, 10° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

4113.5° / 4°

Feb

5616.8° / 5.7°

Mar

7020° / 7.8°

Apr

8723.1° / 9.6°

May

8527.6° / 13.4°

Jun

7032.1° / 16.7°

Jul

5634.8° / 19.7°

Aug

5934.4° / 18.6°

Sep

7331.7° / 16°

Oct

8825.8° / 11.6°

Nov

6718.5° / 6.6°

Dec

4113.4° / 3.5°

Monthly climate evidence for London — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	13.5°C	4°C	50 mm	6.3	9 h 55	41	Strong coverage
February	16.8°C	5.7°C	42 mm	6.1	10 h 48	56	Strong coverage
March	20°C	7.8°C	47 mm	5.3	11 h 51	70	Strong coverage
April	23.1°C	9.6°C	25 mm	3.2	13 h 04	87	Strong coverage
May	27.6°C	13.4°C	10 mm	1.7	14 h 05	85	Strong coverage
June	32.1°C	16.7°C	4 mm	0.4	14 h 38	70	Strong coverage
July	34.8°C	19.7°C	0 mm	0	14 h 25	56	Strong coverage
August	34.4°C	18.6°C	0 mm	0.1	13 h 33	59	Strong coverage
September	31.7°C	16°C	2 mm	0.2	12 h 22	73	Strong coverage
October	25.8°C	11.6°C	12 mm	1.5	11 h 12	88	Strong coverage
November	18.5°C	6.6°C	22 mm	2.9	10 h 11	67	Strong coverage
December	13.4°C	3.5°C	44 mm	5.1	9 h 41	41	Strong coverage

What has changed

London runs +0.8°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+2.6

Feb

+1.1

Mar

+0.5

Apr

+0.6

May

-0.1

Jun

+0.7

Jul

+0.3

Aug

+0.6

Sep

+1.0

Oct

-0.3

Nov

+0.9

Dec

+2.1

October daytime highs, 2011–2025. Last recorded: 24.0°C.

Records at VISALIA, 1898–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.7°C31 Jan 1907	-10.6°C5 Jan 1913	82 mm11 Jan 1940	196 mm1969 · driest 0 mm in 1948	122
February	31.7°C13 Feb 1921	-4.4°C1 Feb 1972	64 mm25 Feb 2023	167 mm1936 · driest 0 mm in 2020	123
March	34.4°C19 Mar 2026	-5.6°C22 Mar 1898	62 mm13 Mar 1905	189 mm1991 · driest 0 mm in 2026	125
April	39.4°C25 Apr 1898	-3.3°C10 Apr 1913	56 mm5 Apr 2006	122 mm1967 · driest 0 mm in 2013	123
May	42.2°C27 May 1951	-1.7°C29 May 1906	32 mm27 May 1971	58 mm1906 · driest 0 mm in 1999	124
June	45.0°C22 Jun 1921	1.7°C13 Jun 1907	24 mm9 Jun 2000	32 mm1998 · driest 0 mm in 1905	126
July	46.1°C18 Jul 1925	4.4°C2 Jul 1912	6 mm1 Jul 1982	6 mm1982 · driest 0 mm in 1995	126
August	46.1°C12 Aug 1933	4.4°C31 Aug 1907	6 mm28 Aug 1916	6 mm1961 · driest 0 mm in 2016	125
September	43.3°C7 Sep 1904	0.0°C5 Sep 1912	36 mm30 Sep 1976	39 mm1976 · driest 0 mm in 1932	124
October	40.0°C4 Oct 1933	-3.9°C31 Oct 1911	94 mm29 Oct 1974	119 mm1974 · driest 0 mm in 1966	124
November	34.4°C6 Nov 1949	-5.0°C22 Nov 1905	44 mm26 Nov 1970	91 mm1970 · driest 0 mm in 1956	123
December	30.0°C17 Dec 1906	-6.7°C17 Dec 1904	61 mm29 Dec 2001	161 mm2010 · driest 0 mm in 1989	123

Typical days per month at VISALIA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	3	2
February	<1	0	<1	1
March	3	<1	<1	2
April	10	2	0	<1
May	21	9	0	<1
June	27	21	0	<1
July	29	27	0	0
August	28	27	0	0
September	27	21	0	<1
October	18	6	0	<1
November	1	0	<1	<1
December	0	0	4	1

How often, not how much — every day in VISALIA’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	5%	20%	6%	23%	10.9–16.3°C
February	22%	21%	5%	23%	14.8–19.2°C
March	49%	18%	5%	17%	17.5–22.5°C
April	75%	11%	3%	8%	21.0–26.8°C
May	92%	5%	1%	1%	25.4–31.1°C
June	99%	1%	<1%	<1%	30.4–35.3°C
July	100%	<1%	0%	0%	34.3–38.9°C
August	100%	<1%	0%	0%	33.2–38.1°C
September	98%	2%	<1%	<1%	30.0–34.9°C
October	90%	5%	2%	2%	24.1–29.4°C
November	45%	11%	3%	9%	17.3–22.8°C
December	8%	17%	5%	16%	11.2–16.7°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1903Each stripe is one year’s mean temperature against the 108-year average. Warmest: 2024. Coolest: 1903.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5367815
NOAA station: USC00049367 · VISALIA
Station distance: 20.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 36.48°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from VISALIA is what differs

Visalia→Tulare→Dinuba→Farmersville→Orange Cove→Orosi→

Or put two places side by side: London vs Visalia

Best time to visitLondon.