Japan · 1991–2020

Best time to visit
Utoma.

September leads for comfortable weather in Utoma: typically 21.4°C by day, 13.9°C at night, with 137 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high21.4°C

Typical low13.9°C

Rain in September137 mm

Comfort

September

September · August · July

69climate match

Beach

August

August · September · July

36climate match

Outdoors

June

June · September · October

69climate match

The weakest month is January, scoring 5 against September’s 69 — days reach only 0.8°C, 23° 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

50.8° / -6.6°

Feb

51.2° / -6.2°

Mar

54.4° / -3°

Apr

128.9° / 1.2°

May

2913.7° / 6°

Jun

5217° / 10.5°

Jul

5720.8° / 15°

Aug

6523° / 17.1°

Sep

6921.4° / 13.9°

Oct

4216.1° / 7.6°

Nov

109.6° / 2°

Dec

53.5° / -3.6°

Monthly climate evidence for Utoma — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 1 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	0.8°C	-6.6°C	37 mm	8.2	5.4°C	9 h 25	5	Good coverage
February	1.2°C	-6.2°C	39 mm	9	2.6°C	10 h 30	5	Good coverage
March	4.4°C	-3°C	57 mm	8.8	2.6°C	11 h 48	5	Good coverage
April	8.9°C	1.2°C	88 mm	9.8	4.1°C	13 h 18	12	Good coverage
May	13.7°C	6°C	135 mm	10.2	7.4°C	14 h 33	29	Good coverage
June	17°C	10.5°C	114 mm	8.9	12.1°C	15 h 14	52	Good coverage
July	20.8°C	15°C	188 mm	14.9	16.2°C	14 h 58	57	Good coverage
August	23°C	17.1°C	173 mm	12.7	19.7°C	13 h 53	65	Good coverage
September	21.4°C	13.9°C	137 mm	10	19.8°C	12 h 26	69	Good coverage
October	16.1°C	7.6°C	121 mm	10.6	16.7°C	11 h	42	Good coverage
November	9.6°C	2°C	98 mm	14.2	13.0°C	9 h 44	10	Good coverage
December	3.5°C	-3.6°C	80 mm	13.4	9.3°C	9 h 07	5	Good coverage

Records at URAKAWA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.9°C13 Jan 1964	-15.5°C29 Jan 1979	51 mm22 Jan 1971	87 mm1975 · driest 0 mm in 2026	75
February	10.9°C21 Feb 1979	-14.7°C17 Feb 1978	43 mm23 Feb 2004	87 mm1966 · driest 0 mm in 2026	75
March	16.5°C26 Mar 1969	-13.1°C4 Mar 1986	67 mm4 Mar 1989	145 mm1960 · driest 0 mm in 2026	75
April	21.0°C18 Apr 2001	-6.5°C1 Apr 1987	132 mm23 Apr 1994	225 mm1964 · driest 0 mm in 2025	75
May	23.5°C27 May 1951	-1.9°C2 May 1953	127 mm4 May 2012	223 mm2012 · driest 0 mm in 2025	75
June	27.2°C7 Jun 1980	0.6°C5 Jun 2003	115 mm4 Jun 1964	280 mm2022 · driest 0 mm in 2025	75
July	28.9°C29 Jul 1970	6.9°C3 Jul 1989	163 mm6 Jul 1981	377 mm2009 · driest 0 mm in 2025	75
August	31.2°C6 Aug 1989	8.9°C27 Aug 1980	190 mm5 Aug 1981	428 mm1962 · driest 0 mm in 2025	74
September	28.9°C9 Sep 2019	1.9°C30 Sep 1969	111 mm18 Sep 2021	272 mm2011 · driest 0 mm in 2025	74
October	23.7°C1 Oct 1994	-1.3°C25 Oct 1964	121 mm19 Oct 1979	312 mm1955 · driest 0 mm in 2025	74
November	19.1°C1 Nov 2004	-7.9°C29 Nov 1971	67 mm15 Nov 2015	214 mm1979 · driest 0 mm in 2025	74
December	14.3°C3 Dec 1968	-12.7°C24 Dec 1984	50 mm1 Dec 1972	148 mm1965 · driest 0 mm in 2025	74

Typical days per month at URAKAWA, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	16	<1
February	0	16	<1
March	0	15	2
April	0	5	2
May	0	<1	4
June	0	0	3
July	2	0	4
August	6	0	4
September	2	0	4
October	0	0	3
November	0	5	2
December	0	14	1

How often, not how much — every day in URAKAWA’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%	32%	2%	35%	-0.9–2.1°C
February	0%	29%	3%	33%	-1.1–2.4°C
March	0%	28%	5%	28%	2.5–5.3°C
April	0%	33%	11%	37%	7.4–9.9°C
May	1%	33%	14%	38%	11.8–14.8°C
June	9%	33%	13%	39%	15.0–18.0°C
July	37%	35%	15%	40%	18.3–22.1°C
August	57%	38%	15%	48%	21.4–24.8°C
September	43%	37%	16%	42%	19.5–22.4°C
October	4%	37%	13%	45%	14.5–17.0°C
November	0%	42%	9%	56%	7.8–10.9°C
December	0%	41%	5%	55%	1.6–5.2°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: 1986.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2127542
NOAA station: JA000047426 · URAKAWA
Station distance: 8.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 42.13°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 1 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 URAKAWA is what differs

Shizunai-furukawachō→Urakawa→Niikappu→Honchō→Mitsuishi-utafue→Takinai→

Or put two places side by side: Utoma vs Shizunai-furukawachō

Best time to visitUtoma.