Japan · 1991–2020

Best time to visit
Hakodate.

June leads for comfortable weather in Hakodate: typically 20.5°C by day, 12.2°C at night, with 80 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high20.5°C

Typical low12.2°C

Rain in June80 mm

Comfort

June

June · September · July

73climate match

Beach

August

August · July · June

48climate match

Outdoors

June

June · May · October

81climate match

The weakest month is January, scoring 5 against June’s 73 — 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° / -6.8°

Feb

51.8° / -6.2°

Mar

56.1° / -2.8°

Apr

2412.1° / 2.3°

May

4917.3° / 7.6°

Jun

7320.5° / 12.2°

Jul

7024.2° / 17.1°

Aug

5925.9° / 18.6°

Sep

7123.2° / 14.3°

Oct

4017.1° / 7°

Nov

510° / 1.3°

Dec

53.3° / -4.2°

Monthly climate evidence for Hakodate — 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	0.8°C	-6.8°C	95 mm	18.6	9.7°C	9 h 27	5	Good coverage
February	1.8°C	-6.2°C	82 mm	16.9	7.5°C	10 h 31	5	Good coverage
March	6.1°C	-2.8°C	92 mm	16.9	7.5°C	11 h 48	5	Good coverage
April	12.1°C	2.3°C	85 mm	10.7	8.7°C	13 h 17	24	Good coverage
May	17.3°C	7.6°C	100 mm	10.2	10.9°C	14 h 31	49	Good coverage
June	20.5°C	12.2°C	80 mm	7.7	14.6°C	15 h 12	73	Good coverage
July	24.2°C	17.1°C	155 mm	13.1	18.9°C	14 h 56	70	Good coverage
August	25.9°C	18.6°C	191 mm	10.7	22.5°C	13 h 51	59	Good coverage
September	23.2°C	14.3°C	160 mm	10.9	22.4°C	12 h 26	71	Good coverage
October	17.1°C	7°C	133 mm	13.2	19.0°C	11 h 00	40	Good coverage
November	10°C	1.3°C	134 mm	17.4	15.4°C	9 h 46	5	Good coverage
December	3.3°C	-4.2°C	130 mm	19.6	12.5°C	9 h 09	5	Good coverage

Records at HAKODATE, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	9.9°C23 Jan 2009	-17.9°C20 Jan 1966	90 mm31 Jan 1970	193 mm2000 · driest 22 mm in 1964	75
February	13.4°C22 Feb 2026	-17.5°C12 Feb 1967	80 mm23 Feb 2004	202 mm2004 · driest 0 mm in 2026	74
March	16.6°C28 Mar 2018	-15.2°C6 Mar 1958	105 mm21 Mar 1975	187 mm2014 · driest 0 mm in 2026	75
April	23.0°C28 Apr 2015	-8.0°C1 Apr 1978	147 mm15 Apr 1990	211 mm1990 · driest 0 mm in 2025	75
May	28.0°C26 May 2019	-1.7°C4 May 1977	78 mm2 May 1998	230 mm1955 · driest 0 mm in 2025	75
June	29.1°C26 Jun 2010	3.6°C3 Jun 1983	66 mm9 Jun 1988	200 mm1956 · driest 0 mm in 2025	75
July	32.6°C26 Jul 1976	6.8°C1 Jul 1967	82 mm22 Jul 2017	337 mm2009 · driest 0 mm in 2025	75
August	35.4°C10 Aug 2023	10.2°C25 Aug 1979	136 mm18 Aug 1958	486 mm2022 · driest 0 mm in 2025	74
September	32.6°C18 Sep 2012	2.8°C30 Sep 1969	270 mm18 Sep 1990	487 mm1990 · driest 0 mm in 2025	73
October	25.7°C3 Oct 2025	-2.7°C31 Oct 1975	78 mm19 Oct 1979	225 mm1955 · driest 0 mm in 2025	74
November	20.7°C2 Nov 2003	-9.7°C22 Nov 1998	86 mm2 Nov 2021	222 mm2012 · driest 0 mm in 2025	74
December	16.3°C1 Dec 1990	-14.1°C23 Dec 1952	110 mm16 Dec 2014	655 mm2014 · driest 0 mm in 2025	74

Typical days per month at HAKODATE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	16	1
February	0	0	15	1
March	0	0	13	1
April	0	0	4	2
May	<1	0	0	3
June	2	0	0	2
July	12	<1	0	4
August	18	3	0	4
September	7	<1	0	4
October	0	0	<1	3
November	0	0	6	3
December	0	0	14	3

How often, not how much — every day in HAKODATE’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%	52%	4%	70%	-1.2–2.2°C
February	0%	50%	4%	65%	-1.0–3.0°C
March	0%	42%	6%	50%	3.4–7.6°C
April	1%	34%	10%	39%	10.0–13.2°C
May	15%	33%	10%	33%	15.2–18.3°C
June	40%	30%	10%	31%	18.0–21.5°C
July	60%	32%	12%	37%	21.3–25.8°C
August	65%	34%	16%	39%	24.0–28.1°C
September	53%	39%	17%	47%	21.1–24.4°C
October	11%	36%	11%	42%	15.4–17.9°C
November	<1%	47%	11%	62%	7.7–11.4°C
December	0%	53%	7%	73%	0.9–5.0°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: 1969.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2130188
NOAA station: JA000047430 · HAKODATE
Station distance: 4.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 41.78°, 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 HAKODATE is what differs

Hokuto→Kamiiso→Honchō→Higashimorichō→Ōma→Kikonai→

Or put two places side by side: Hakodate vs Hokuto

Best time to visitHakodate.

June

August

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Hakodate.

The whole year,
without the guesswork.

Nearby, measured,
and named.