Japan · 1991–2020

Best time to visit
Kawamoto.

May leads for comfortable weather in Kawamoto: typically 22.3°C by day, 13.1°C at night, with 125 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high22.3°C

Typical low13.1°C

Rain in May125 mm

Comfort

May

May · October · June

73climate match

Beach

August

August · September · June

54climate match

Outdoors

May

May · October · November

66climate match

The weakest month is January, scoring 8 against May’s 73 — days reach only 9.6°C, 14° 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

89.6° / 2.5°

Feb

1010.2° / 2.1°

Mar

1913.2° / 4.1°

Apr

4517.8° / 8.2°

May

7322.3° / 13.1°

Jun

5925.1° / 17.6°

Jul

1928.9° / 22.5°

Aug

3530.6° / 23.3°

Sep

4926.7° / 18.7°

Oct

7222.1° / 13.2°

Nov

4717.2° / 8.6°

Dec

1412.1° / 4.6°

Monthly climate evidence for Kawamoto — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 19 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	9.6°C	2.5°C	113 mm	15.7	14.8°C	10 h 02	8	Good coverage
February	10.2°C	2.1°C	108 mm	15.2	13.3°C	10 h 52	10	Good coverage
March	13.2°C	4.1°C	147 mm	14.8	13.3°C	11 h 52	19	Good coverage
April	17.8°C	8.2°C	143 mm	11.2	14.6°C	13 h 01	45	Good coverage
May	22.3°C	13.1°C	125 mm	8.6	17.3°C	13 h 59	73	Good coverage
June	25.1°C	17.6°C	216 mm	11.1	20.7°C	14 h 30	59	Good coverage
July	28.9°C	22.5°C	332 mm	14.2	24.1°C	14 h 17	19	Good coverage
August	30.6°C	23.3°C	192 mm	9.7	26.8°C	13 h 28	35	Good coverage
September	26.7°C	18.7°C	235 mm	11	25.5°C	12 h 21	49	Good coverage
October	22.1°C	13.2°C	126 mm	8.8	22.6°C	11 h 14	72	Good coverage
November	17.2°C	8.6°C	120 mm	11.5	20.2°C	10 h 17	47	Good coverage
December	12.1°C	4.6°C	146 mm	16.7	17.3°C	9 h 49	14	Good coverage

What has changed

Kawamoto runs +1.0°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

+0.7

Feb

+1.0

Mar

+2.0

Apr

+0.9

May

+1.4

Jun

+1.4

Jul

+1.4

Aug

+1.0

Sep

+0.7

Oct

+0.7

Nov

—

Dec

0.0

May daytime highs, 2011–2025. Last recorded: 21.3°C.

Records at HAMADA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.7°C15 Jan 2002	-6.0°C5 Jan 1970	48 mm4 Jan 1980	233 mm1989 · driest 0 mm in 2026	75
February	25.5°C27 Feb 1954	-7.6°C26 Feb 1981	51 mm25 Feb 1989	257 mm1989 · driest 0 mm in 2026	75
March	28.4°C27 Mar 2025	-4.3°C4 Mar 1977	64 mm5 Mar 2018	206 mm1966 · driest 48 mm in 2007	75
April	30.4°C21 Apr 1989	-0.8°C5 Apr 1976	186 mm21 Apr 1994	252 mm1994 · driest 0 mm in 2025	75
May	31.1°C26 May 2024	2.6°C1 May 1965	148 mm11 May 2011	408 mm1963 · driest 0 mm in 2025	74
June	33.9°C20 Jun 2004	8.6°C3 Jun 1981	226 mm30 Jun 1958	459 mm1985 · driest 0 mm in 2025	74
July	36.9°C31 Jul 2018	11.9°C4 Jul 1966	395 mm15 Jul 1988	755 mm1972 · driest 0 mm in 2025	75
August	38.5°C6 Aug 2017	15.7°C26 Aug 1956	288 mm24 Aug 2013	568 mm2021 · driest 0 mm in 2025	74
September	36.5°C1 Sep 2010	8.4°C28 Sep 1987	174 mm4 Sep 1979	635 mm2018 · driest 0 mm in 2024	74
October	32.1°C5 Oct 2016	4.5°C31 Oct 1986	139 mm24 Oct 2013	306 mm2004 · driest 0 mm in 2025	74
November	28.0°C6 Nov 2023	0.4°C30 Nov 1970	135 mm2 Nov 2024	222 mm2024 · driest 0 mm in 2025	74
December	25.8°C4 Dec 2018	-4.1°C27 Dec 1976	87 mm5 Dec 2004	214 mm1978 · driest 0 mm in 2025	74

Typical days per month at HAMADA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	2	3
February	0	0	3	3
March	<1	0	1	4
April	<1	0	0	4
May	6	<1	0	4
June	14	1	0	5
July	25	12	0	5
August	29	19	0	4
September	21	4	0	5
October	4	<1	0	3
November	<1	0	0	3
December	0	0	<1	3

The best month has moved. On the 1961–1990 numbers the strongest month here was October (scoring 75); on 2011–2025 it is May (84). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in HAMADA’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	0%	47%	11%	62%	7.7–10.6°C
February	<1%	47%	12%	61%	7.3–11.6°C
March	2%	43%	15%	52%	11.3–14.4°C
April	16%	38%	16%	45%	16.6–19.5°C
May	49%	35%	16%	41%	20.8–23.1°C
June	61%	39%	20%	55%	23.5–26.2°C
July	62%	39%	21%	44%	26.7–30.7°C
August	71%	30%	13%	35%	28.9–32.2°C
September	59%	41%	21%	51%	25.1–28.3°C
October	53%	32%	13%	36%	20.8–22.9°C
November	11%	39%	13%	51%	15.6–18.3°C
December	<1%	46%	13%	61%	9.9–13.6°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 41-year average. Warmest: 2025. Coolest: 1980.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1859687
NOAA station: JA000047755 · HAMADA
Station distance: 40.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 34.98°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 19 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 HAMADA is what differs

Hamada→Masuda→Gōtsuchō→Kyōmendao→Yunotsuchō-kohama→Yoshiura→

Or put two places side by side: Kawamoto vs Hamada

Best time to visitKawamoto.

May

August

May

The whole year,without the guesswork.

Kawamoto runs +1.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Kawamoto.

The whole year,
without the guesswork.

Kawamoto runs +1.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.