Japan · 1991–2020

Best time to visit
Tamanoi.

May leads for comfortable weather in Tamanoi: typically 22.7°C by day, 9.8°C at night, with 80 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high22.7°C

Typical low9.8°C

Rain in May80 mm

Comfort

May

May · June · September

74climate match

Beach

August

August · June · July

65climate match

Outdoors

May

May · October · April

75climate match

The weakest month is January, scoring 5 against May’s 74 — days reach only 3.1°C, 21° 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

53.1° / -4°

Feb

54.1° / -4.5°

Mar

59.1° / -1.4°

Apr

4316.7° / 3.7°

May

7422.7° / 9.8°

Jun

7425.7° / 15.5°

Jul

3329.3° / 19.8°

Aug

4530.8° / 20.4°

Sep

6526.1° / 16°

Oct

5319.6° / 9.2°

Nov

1812.3° / 2.5°

Dec

56° / -1.6°

Monthly climate evidence for Tamanoi — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.1°C	-4°C	118 mm	18.7	9 h 50	5	Strong coverage
February	4.1°C	-4.5°C	83 mm	16.2	10 h 45	5	Good coverage
March	9.1°C	-1.4°C	97 mm	15.6	11 h 50	5	Good coverage
April	16.7°C	3.7°C	76 mm	10.6	13 h 07	43	Good coverage
May	22.7°C	9.8°C	80 mm	9.9	14 h 10	74	Good coverage
June	25.7°C	15.5°C	118 mm	11.7	14 h 44	74	Good coverage
July	29.3°C	19.8°C	246 mm	15.8	14 h 31	33	Good coverage
August	30.8°C	20.4°C	142 mm	11.5	13 h 36	45	Good coverage
September	26.1°C	16°C	156 mm	13.6	12 h 23	65	Good coverage
October	19.6°C	9.2°C	143 mm	10.7	11 h 09	53	Good coverage
November	12.3°C	2.5°C	102 mm	15.6	10 h 06	18	Good coverage
December	6°C	-1.6°C	132 mm	19.1	9 h 35	5	Good coverage

Records at WAKAMATSU, 1954–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	13.1°C8 Jan 1979	-14.4°C14 Jan 1969	48 mm26 Jan 2013	272 mm1963 · driest 39 mm in 1985	72
February	17.0°C22 Feb 2026	-15.2°C14 Feb 1976	45 mm22 Feb 1985	162 mm1955 · driest 0 mm in 2026	72
March	23.4°C27 Mar 2025	-11.9°C2 Mar 1984	57 mm24 Mar 1963	172 mm1966 · driest 0 mm in 2026	72
April	30.5°C22 Apr 1998	-4.6°C2 Apr 1970	71 mm15 Apr 1982	122 mm1982 · driest 0 mm in 2025	72
May	35.6°C27 May 2019	-1.2°C4 May 1957	61 mm26 May 1989	153 mm2004 · driest 0 mm in 2025	72
June	35.6°C29 Jun 2018	6.9°C15 Jun 1977	116 mm27 Jun 1978	288 mm1978 · driest 0 mm in 2025	72
July	37.7°C28 Jul 2025	9.1°C2 Jul 1976	143 mm16 Jul 1956	495 mm2020 · driest 0 mm in 2025	72
August	38.5°C23 Aug 2018	10.3°C20 Aug 1956	126 mm3 Aug 1995	395 mm1998 · driest 0 mm in 2025	71
September	35.8°C8 Sep 2019	4.8°C23 Sep 2001	119 mm12 Sep 1982	346 mm1958 · driest 0 mm in 2025	71
October	31.2°C6 Oct 2018	-1.5°C31 Oct 1983	99 mm12 Oct 2019	263 mm2004 · driest 0 mm in 2025	71
November	24.5°C1 Nov 1964	-5.9°C29 Nov 1983	41 mm20 Nov 1970	146 mm1972 · driest 0 mm in 2025	71
December	20.9°C1 Dec 1990	-14.4°C31 Dec 1967	77 mm27 Dec 2006	231 mm1980 · driest 0 mm in 2025	71

Typical days per month at WAKAMATSU, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	15	3
February	0	0	14	2
March	0	0	12	2
April	2	0	3	2
May	10	1	0	3
June	18	4	0	4
July	26	14	0	5
August	28	19	0	4
September	17	5	0	4
October	2	<1	0	3
November	0	0	3	2
December	0	0	12	3

How often, not how much — every day in WAKAMATSU’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%	56%	10%	77%	1.2–4.1°C
February	0%	51%	8%	71%	1.5–5.9°C
March	<1%	43%	7%	56%	6.1–10.3°C
April	21%	35%	8%	39%	14.5–18.8°C
May	53%	33%	10%	38%	21.0–24.2°C
June	57%	40%	14%	52%	23.8–27.0°C
July	56%	45%	19%	53%	26.3–31.2°C
August	65%	35%	14%	46%	28.5–32.6°C
September	56%	41%	15%	53%	23.8–27.6°C
October	25%	37%	11%	43%	17.5–20.3°C
November	1%	42%	8%	55%	10.4–13.8°C
December	0%	51%	10%	74%	3.6–7.5°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.

1954Each stripe is one year’s mean temperature against the 38-year average. Warmest: 2025. Coolest: 1981.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2110846
NOAA station: JA000047570 · WAKAMATSU
Station distance: 40.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 37.53°, 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 WAKAMATSU is what differs

Aizu-Wakamatsu→Nihommatsu→Kitakata→Motomiya→Aizu-misato Machi→Bange→

Or put two places side by side: Tamanoi vs Aizu-Wakamatsu

Best time to visitTamanoi.

May

August

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Tamanoi.

The whole year,
without the guesswork.

Nearby, measured,
and named.