Japan · 1991–2020

Best time to visit
Yokohama.

May leads for comfortable weather in Yokohama: typically 23.3°C by day, 15.2°C at night, with 159 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high23.3°C

Typical low15.2°C

Rain in May159 mm

Comfort

May

May · October · June

73climate match

Beach

August

August · July · June

57climate match

Outdoors

November

November · April · December

71climate match

The weakest month is February, scoring 26 against May’s 73 — days reach only 10.8°C, 13° 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

2810.2° / 2.1°

Feb

2610.8° / 2.7°

Mar

2614° / 5.5°

Apr

5119.1° / 10.3°

May

7323.3° / 15.2°

Jun

5425.8° / 18.9°

Jul

3529.6° / 22.8°

Aug

3731.2° / 24.2°

Sep

3327.5° / 20.9°

Oct

5522.2° / 14.9°

Nov

5217.2° / 9.6°

Dec

3512.5° / 4.8°

Monthly climate evidence for Yokohama — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 21 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	10.2°C	2.1°C	53 mm	4.3	14.5°C	10 h 00	28	Good coverage
February	10.8°C	2.7°C	73 mm	6.8	13.4°C	10 h 51	26	Good coverage
March	14°C	5.5°C	154 mm	11.2	13.9°C	11 h 52	26	Good coverage
April	19.1°C	10.3°C	164 mm	9.9	15.5°C	13 h 02	51	Good coverage
May	23.3°C	15.2°C	159 mm	10.1	18.2°C	14 h 01	73	Good coverage
June	25.8°C	18.9°C	206 mm	12.8	21.0°C	14 h 32	54	Good coverage
July	29.6°C	22.8°C	206 mm	12.3	23.5°C	14 h 20	35	Good coverage
August	31.2°C	24.2°C	159 mm	8.3	25.8°C	13 h 29	37	Good coverage
September	27.5°C	20.9°C	293 mm	13	24.8°C	12 h 21	33	Good coverage
October	22.2°C	14.9°C	265 mm	10.6	22.0°C	11 h 14	55	Good coverage
November	17.2°C	9.6°C	114 mm	8	19.5°C	10 h 15	52	Good coverage
December	12.5°C	4.8°C	77 mm	5.6	16.7°C	9 h 46	35	Good coverage

What has changed

Yokohama runs +1.6°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

+0.8

Feb

+1.2

Mar

+2.4

Apr

+1.7

May

+1.7

Jun

+2.0

Jul

+2.4

Aug

+1.7

Sep

+1.9

Oct

—

Nov

+1.2

Dec

+0.5

May daytime highs, 2011–2025. Last recorded: 22.8°C.

Records at YOKOHAMA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.4°C5 Jan 1960	-6.2°C26 Jan 1963	103 mm31 Jan 2009	162 mm1964 · driest 0 mm in 1976	75
February	24.8°C14 Feb 2009	-4.9°C4 Feb 1951	91 mm15 Feb 2021	174 mm1966 · driest 0 mm in 2026	75
March	25.2°C26 Mar 2025	-4.2°C8 Mar 1971	96 mm19 Mar 1956	231 mm2018 · driest 16 mm in 1973	75
April	27.8°C22 Apr 2004	0.0°C5 Apr 1955	143 mm8 Apr 1989	281 mm2013 · driest 0 mm in 2025	75
May	31.3°C26 May 2019	4.0°C3 May 1953	136 mm3 May 2012	397 mm1965 · driest 0 mm in 2025	74
June	36.1°C30 Jun 2022	10.1°C7 Jun 1963	256 mm28 Jun 1966	487 mm1966 · driest 0 mm in 2025	74
July	37.3°C18 Jul 2023	13.3°C1 Jul 1976	206 mm1 Jul 1970	373 mm2021 · driest 0 mm in 2025	75
August	37.4°C9 Aug 2016	15.5°C28 Aug 1953	244 mm21 Aug 1994	422 mm2003 · driest 0 mm in 1995	73
September	35.6°C4 Sep 2010	11.3°C28 Sep 1951	287 mm26 Sep 1958	537 mm1958 · driest 0 mm in 2025	73
October	32.4°C7 Oct 2018	6.1°C19 Oct 1957	261 mm6 Oct 2014	761 mm2004 · driest 0 mm in 2025	74
November	27.3°C7 Nov 2023	-0.7°C29 Nov 1951	154 mm10 Nov 1973	274 mm2003 · driest 0 mm in 1995	74
December	24.5°C16 Dec 2023	-4.3°C28 Dec 1966	93 mm3 Dec 2010	235 mm1968 · driest 0 mm in 1988	74

Typical days per month at YOKOHAMA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	2	2
February	0	0	2	2
March	0	0	0	4
April	1	0	0	4
May	10	<1	0	4
June	17	2	0	5
July	26	15	0	4
August	28	22	0	3
September	21	8	0	5
October	6	<1	0	5
November	0	0	0	3
December	0	0	<1	2

How often, not how much — every day in YOKOHAMA’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	<1%	17%	7%	11%	8.5–11.3°C
February	<1%	24%	9%	26%	8.8–12.2°C
March	4%	34%	16%	39%	11.9–15.3°C
April	27%	37%	17%	41%	17.2–20.2°C
May	59%	36%	18%	43%	21.6–24.2°C
June	57%	43%	21%	59%	23.3–26.9°C
July	66%	35%	15%	38%	26.8–31.1°C
August	73%	28%	12%	35%	29.1–32.7°C
September	61%	40%	20%	52%	25.1–28.9°C
October	49%	36%	19%	37%	20.3–22.9°C
November	15%	27%	11%	27%	15.4–18.5°C
December	<1%	17%	7%	10%	11.1–13.6°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.

1951Each stripe is one year’s mean temperature against the 42-year average. Warmest: 2025. Coolest: 1984.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1848354
NOAA station: JA000047670 · YOKOHAMA
Station distance: 0 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 35.43°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 21 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 YOKOHAMA is what differs

Kawasaki→Aihara→Sagamihara→Hachiōji→Fujisawa→Machida→

Or put two places side by side: Yokohama vs Kawasaki

Best time to visitYokohama.

May

August

November

The whole year,without the guesswork.

Yokohama runs +1.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Yokohama.

The whole year,
without the guesswork.

Yokohama runs +1.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.