Japan · 1991–2020

Best time to visit
Kaitaichi.

October leads for comfortable weather in Kaitaichi: typically 23.7°C by day, 14.1°C at night, with 139 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high23.7°C

Typical low14.1°C

Rain in October139 mm

Comfort

October

October · May · November

79climate match

Beach

September

September · August · October

66climate match

Outdoors

November

November · April · October

79climate match

The weakest month is July, scoring 12 against October’s 79 — 319 mm of rain falls.

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

229.9° / 1.3°

Feb

2511.1° / 1.9°

Mar

3214.6° / 4.4°

Apr

5319.7° / 9.3°

May

7224.4° / 14.6°

Jun

3927.2° / 19.4°

Jul

1231.1° / 23.9°

Aug

3432.8° / 24.8°

Sep

4729.2° / 20.8°

Oct

7923.7° / 14.1°

Nov

5817.7° / 8.4°

Dec

3412.3° / 3.5°

Monthly climate evidence for Kaitaichi — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 28 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	9.9°C	1.3°C	54 mm	8.2	14.6°C	10 h 05	22	Good coverage
February	11.1°C	1.9°C	70 mm	7	13.1°C	10 h 54	25	Good coverage
March	14.6°C	4.4°C	120 mm	9.5	13.3°C	11 h 52	32	Good coverage
April	19.7°C	9.3°C	159 mm	9.3	14.7°C	13 h	53	Good coverage
May	24.4°C	14.6°C	181 mm	8.8	17.1°C	13 h 56	72	Good coverage
June	27.2°C	19.4°C	280 mm	12.5	20.4°C	14 h 26	39	Good coverage
July	31.1°C	23.9°C	319 mm	13	24.2°C	14 h 14	12	Good coverage
August	32.8°C	24.8°C	142 mm	8	26.3°C	13 h 26	34	Good coverage
September	29.2°C	20.8°C	177 mm	9.9	25.2°C	12 h 21	47	Good coverage
October	23.7°C	14.1°C	139 mm	7.4	23.0°C	11 h 16	79	Good coverage
November	17.7°C	8.4°C	74 mm	6.7	20.2°C	10 h 19	58	Good coverage
December	12.3°C	3.5°C	65 mm	5.8	17.1°C	9 h 52	34	Good coverage

Records at HIROSHIMA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.5°C27 Jan 1969	-8.5°C16 Jan 1963	53 mm31 Jan 1990	136 mm1990 · driest 0 mm in 2026	74
February	21.5°C14 Feb 2009	-7.5°C27 Feb 1981	56 mm28 Feb 1976	158 mm1989 · driest 0 mm in 2026	75
March	23.9°C25 Mar 2025	-5.5°C5 Mar 1977	62 mm17 Mar 1996	238 mm1966 · driest 0 mm in 2026	75
April	29.0°C22 Apr 2004	-0.9°C6 Apr 1965	127 mm7 Apr 1991	282 mm1967 · driest 0 mm in 2025	75
May	31.5°C22 May 1998	4.4°C1 May 1965	128 mm26 May 1965	400 mm1963 · driest 0 mm in 2025	75
June	33.6°C25 Jun 2011	9.9°C9 Jun 1957	187 mm20 Jun 1965	659 mm1985 · driest 0 mm in 2025	75
July	38.7°C17 Jul 1994	14.1°C4 Jul 1966	293 mm7 Jul 2018	762 mm2020 · driest 0 mm in 2025	74
August	37.5°C13 Aug 2019	15.3°C31 Aug 1968	180 mm14 Aug 2021	696 mm2021 · driest 0 mm in 1994	73
September	36.9°C6 Sep 2007	8.6°C29 Sep 1965	169 mm28 Sep 1983	445 mm1966 · driest 0 mm in 2025	72
October	31.4°C1 Oct 2019	3.2°C28 Oct 1958	159 mm14 Oct 1951	387 mm2017 · driest 0 mm in 2025	74
November	25.4°C2 Nov 1959	-0.6°C28 Nov 1960	141 mm2 Nov 2024	260 mm2024 · driest 0 mm in 2025	74
December	22.1°C3 Dec 1968	-4.4°C30 Dec 1980	84 mm5 Dec 2004	109 mm2004 · driest 0 mm in 2025	74

Typical days per month at HIROSHIMA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	5	1
February	0	0	4	2
March	0	0	<1	4
April	1	0	0	4
May	14	<1	0	5
June	23	4	0	5
July	28	20	0	5
August	29	26	0	3
September	26	13	0	4
October	11	<1	0	3
November	0	0	0	2
December	0	0	<1	2

How often, not how much — every day in HIROSHIMA’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%	21%	6%	17%	7.9–10.8°C
February	<1%	27%	9%	30%	7.9–12.3°C
March	2%	32%	14%	34%	12.2–15.4°C
April	28%	35%	19%	42%	17.5–20.9°C
May	62%	33%	19%	36%	21.8–25.2°C
June	59%	41%	23%	57%	24.4–27.7°C
July	63%	38%	22%	42%	28.2–32.3°C
August	74%	26%	12%	29%	29.8–33.6°C
September	64%	35%	18%	42%	25.9–30.0°C
October	66%	23%	11%	16%	21.2–24.4°C
November	17%	21%	8%	14%	15.7–18.8°C
December	<1%	18%	5%	12%	10.0–13.5°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 45-year average. Warmest: 2025. Coolest: 1965.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1860772
NOAA station: JA000047765 · HIROSHIMA
Station distance: 7.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 34.37°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 28 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 HIROSHIMA is what differs

Hiroshima→Kure→Higashihiroshima→Hatsukaichi→Gion→Fuchū→

Or put two places side by side: Kaitaichi vs Hiroshima

Best time to visitKaitaichi.