Japan · 1991–2020

Best time to visit
Yamanobe.

May leads for comfortable weather in Yamanobe: typically 22.8°C by day, 10.2°C at night, with 70 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high22.8°C

Typical low10.2°C

Rain in May70 mm

Comfort

May

May · June · September

78climate match

Beach

August

August · June · July

58climate match

Outdoors

May

May · October · April

79climate match

The weakest month is January, scoring 5 against May’s 78 — days reach only 3.4°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

53.4° / -3.6°

Feb

54.5° / -3.5°

Mar

59.2° / -1°

Apr

4416.5° / 4.3°

May

7822.8° / 10.2°

Jun

7826° / 15.2°

Jul

3629.2° / 19.8°

Aug

3930.6° / 20.6°

Sep

6725.9° / 16.2°

Oct

5519.5° / 9.3°

Nov

2512.6° / 3.5°

Dec

56.2° / -1°

Monthly climate evidence for Yamanobe — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.4°C	-3.6°C	97 mm	18	9 h 46	5	Good coverage
February	4.5°C	-3.5°C	80 mm	15	10 h 42	5	Good coverage
March	9.2°C	-1°C	90 mm	14.1	11 h 50	5	Strong coverage
April	16.5°C	4.3°C	77 mm	10.3	13 h 08	44	Good coverage
May	22.8°C	10.2°C	70 mm	8.4	14 h 13	78	Good coverage
June	26°C	15.2°C	102 mm	9.2	14 h 49	78	Good coverage
July	29.2°C	19.8°C	232 mm	15.2	14 h 35	36	Good coverage
August	30.6°C	20.6°C	190 mm	11.5	13 h 39	39	Good coverage
September	25.9°C	16.2°C	155 mm	12.2	12 h 23	67	Good coverage
October	19.5°C	9.3°C	133 mm	9.9	11 h 08	55	Good coverage
November	12.6°C	3.5°C	90 mm	13.4	10 h 03	25	Good coverage
December	6.2°C	-1°C	113 mm	17.3	9 h 31	5	Good coverage

What has changed

Yamanobe runs +1.4°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

+0.6

Feb

+1.5

Mar

+2.6

Apr

+1.3

May

+1.7

Jun

+1.9

Jul

+2.1

Aug

+1.3

Sep

+1.9

Oct

+1.3

Nov

+0.9

Dec

+0.1

May daytime highs, 2011–2025. Last recorded: 22.1°C.

Records at YAMAGATA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.1°C5 Jan 1960	-14.7°C20 Jan 1970	54 mm21 Jan 2024	163 mm1962 · driest 32 mm in 1957	75
February	18.9°C19 Feb 2024	-12.0°C24 Feb 1968	55 mm16 Feb 2014	134 mm1961 · driest 0 mm in 2026	75
March	23.1°C28 Mar 2018	-9.1°C3 Mar 1957	39 mm11 Mar 1995	155 mm2014 · driest 9 mm in 2025	75
April	30.5°C13 Apr 1998	-4.4°C2 Apr 1970	85 mm25 Apr 1999	147 mm2020 · driest 0 mm in 2025	75
May	34.1°C27 May 2019	-1.2°C4 May 1957	54 mm14 May 1993	145 mm1972 · driest 0 mm in 2025	74
June	37.5°C29 Jun 2018	4.8°C3 Jun 1958	100 mm22 Jun 1981	240 mm1981 · driest 0 mm in 2025	74
July	37.9°C14 Jul 2015	6.7°C1 Jul 1976	156 mm28 Jul 2020	460 mm2020 · driest 0 mm in 2025	75
August	39.0°C23 Aug 2018	11.5°C26 Aug 1956	130 mm10 Aug 1995	409 mm1998 · driest 0 mm in 2025	73
September	36.6°C8 Sep 2020	4.9°C29 Sep 1960	139 mm21 Sep 2011	318 mm1958 · driest 0 mm in 2025	73
October	30.7°C6 Oct 2018	-1.0°C31 Oct 1983	105 mm7 Oct 2006	277 mm1991 · driest 0 mm in 2025	74
November	25.8°C1 Nov 1977	-4.7°C29 Nov 1983	55 mm20 Nov 1970	159 mm1951 · driest 0 mm in 2025	74
December	20.1°C1 Dec 1990	-12.4°C30 Dec 1976	77 mm26 Dec 1958	211 mm2014 · driest 0 mm in 2025	74

Typical days per month at YAMAGATA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	15	2
February	0	0	14	2
March	0	0	12	2
April	2	<1	2	2
May	9	1	0	2
June	18	3	0	3
July	25	13	0	5
August	27	18	0	4
September	16	5	0	3
October	2	0	0	2
November	0	0	2	2
December	0	0	11	3

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 88); on 2011–2025 it is May (87). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in YAMAGATA’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%	53%	7%	74%	1.6–4.7°C
February	0%	47%	7%	63%	1.9–6.2°C
March	1%	39%	7%	47%	6.4–10.6°C
April	19%	33%	7%	36%	14.4–18.4°C
May	55%	30%	9%	31%	20.7–23.9°C
June	62%	36%	13%	45%	23.6–27.2°C
July	57%	43%	19%	54%	26.0–31.2°C
August	67%	34%	14%	41%	28.0–32.8°C
September	58%	40%	14%	50%	23.3–27.4°C
October	26%	35%	9%	39%	17.5–20.2°C
November	1%	41%	9%	56%	10.9–13.7°C
December	0%	50%	10%	69%	4.1–7.9°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 44-year average. Warmest: 2025. Coolest: 1984.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2114134
NOAA station: JA000047588 · YAMAGATA
Station distance: 8.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 38.29°, 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 YAMAGATA is what differs

Yamagata→Yonezawa→Tendō→Date→Higashine→Sagae→

Or put two places side by side: Yamanobe vs Yamagata

Best time to visitYamanobe.

May

August

May

The whole year,without the guesswork.

Yamanobe runs +1.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Yamanobe.

The whole year,
without the guesswork.

Yamanobe runs +1.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.