Japan · 1991–2020

Best time to visit
Seto.

May leads for comfortable weather in Seto: typically 24.7°C by day, 14.5°C at night, with 168 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high24.7°C

Typical low14.5°C

Rain in May168 mm

Comfort

May

May · October · April

73climate match

Beach

September

September · June · August

55climate match

Outdoors

November

November · April · December

76climate match

The weakest month is July, scoring 14 against May’s 73 — 288 mm of rain falls, and days average 31.5°C, 8° above 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

219.4° / 0.4°

Feb

2210.6° / 0.6°

Mar

3114.7° / 3.9°

Apr

5720.3° / 9.1°

May

7324.7° / 14.5°

Jun

4727.7° / 19.1°

Jul

1431.5° / 23.4°

Aug

2733.2° / 24.5°

Sep

3829° / 20.7°

Oct

6623.4° / 14.4°

Nov

5517.3° / 7.8°

Dec

3012° / 3°

Monthly climate evidence for Seto — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 45 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	9.4°C	0.4°C	50 mm	5.7	14.2°C	10 h 01	21	Good coverage
February	10.6°C	0.6°C	71 mm	6.4	13.4°C	10 h 51	22	Good coverage
March	14.7°C	3.9°C	126 mm	9.5	13.7°C	11 h 52	31	Good coverage
April	20.3°C	9.1°C	138 mm	9.2	15.4°C	13 h 02	57	Good coverage
May	24.7°C	14.5°C	168 mm	9.1	18.4°C	14 h	73	Good coverage
June	27.7°C	19.1°C	218 mm	12.3	21.8°C	14 h 31	47	Good coverage
July	31.5°C	23.4°C	288 mm	15.4	25.4°C	14 h 19	14	Good coverage
August	33.2°C	24.5°C	170 mm	10.4	27.3°C	13 h 29	27	Good coverage
September	29°C	20.7°C	228 mm	12.3	25.7°C	12 h 21	38	Good coverage
October	23.4°C	14.4°C	214 mm	9.8	22.4°C	11 h 14	66	Good coverage
November	17.3°C	7.8°C	82 mm	6.6	19.4°C	10 h 16	55	Good coverage
December	12°C	3°C	74 mm	6.5	16.6°C	9 h 48	30	Good coverage

What has changed

Seto 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

+1.1

Feb

+1.0

Mar

+2.6

Apr

+1.2

May

+1.7

Jun

+1.7

Jul

+1.9

Aug

+1.5

Sep

—

Oct

—

Nov

+0.9

Dec

+0.8

May daytime highs, 2011–2025. Last recorded: 24.1°C.

Records at NAGOYA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.0°C27 Jan 1969	-7.0°C25 Jan 1963	69 mm31 Jan 2009	127 mm1998 · driest 0 mm in 2026	75
February	23.5°C14 Feb 2016	-6.2°C27 Feb 1981	63 mm27 Feb 2010	158 mm1989 · driest 0 mm in 1997	75
March	25.1°C28 Mar 2018	-4.6°C1 Mar 1957	71 mm25 Mar 1981	211 mm2010 · driest 0 mm in 2026	75
April	30.3°C22 Apr 2004	-0.6°C3 Apr 1952	90 mm25 Apr 2018	230 mm1967 · driest 0 mm in 2025	75
May	34.8°C31 May 1958	4.6°C1 May 1965	99 mm27 May 1965	331 mm2011 · driest 0 mm in 2025	75
June	37.9°C30 Jun 2022	9.3°C8 Jun 1969	175 mm23 Jun 1952	514 mm1961 · driest 0 mm in 2025	75
July	39.6°C23 Jul 2018	14.4°C4 Jul 1966	176 mm11 Jul 1952	451 mm2020 · driest 0 mm in 2025	75
August	40.3°C3 Aug 2018	14.4°C20 Aug 1956	202 mm30 Aug 1971	376 mm1971 · driest 0 mm in 2025	74
September	38.0°C4 Sep 2010	9.9°C30 Sep 1966	341 mm11 Sep 2000	665 mm2000 · driest 0 mm in 2025	74
October	32.7°C1 Oct 1961	4.1°C19 Oct 1957	158 mm8 Oct 2009	479 mm2004 · driest 0 mm in 2025	73
November	25.5°C1 Nov 2009	-1.2°C29 Nov 1953	117 mm28 Nov 1991	200 mm2009 · driest 0 mm in 2025	74
December	22.6°C11 Dec 2015	-6.0°C31 Dec 1967	84 mm5 Dec 2004	147 mm2014 · driest 0 mm in 2025	74

Typical days per month at NAGOYA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	8	1
February	0	0	7	2
March	<1	0	2	4
April	3	0	0	4
May	15	2	0	4
June	23	6	0	6
July	28	20	0	6
August	30	26	0	3
September	25	13	0	5
October	9	<1	0	4
November	<1	0	0	2
December	0	0	2	2

How often, not how much — every day in NAGOYA’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	<1%	20%	6%	16%	7.4–10.4°C
February	<1%	25%	9%	23%	8.0–12.0°C
March	4%	31%	15%	33%	12.4–15.6°C
April	34%	37%	19%	43%	18.2–21.4°C
May	61%	36%	19%	42%	22.7–25.6°C
June	58%	43%	22%	59%	25.8–28.5°C
July	58%	43%	22%	49%	28.8–33.0°C
August	70%	31%	15%	37%	31.2–34.3°C
September	58%	42%	20%	53%	26.2–30.3°C
October	59%	31%	15%	29%	21.0–24.4°C
November	18%	24%	9%	20%	15.4–18.6°C
December	<1%	19%	6%	13%	9.8–13.0°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 50-year average. Warmest: 2025. Coolest: 1981.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1852663
NOAA station: JA000047636 · NAGOYA
Station distance: 14.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 35.23°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 45 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 NAGOYA is what differs

Nagoya→Toyota→Okazaki→Kasugai→Anjō→Kariya→

Or put two places side by side: Seto vs Nagoya

Best time to visitSeto.

May

September

November

The whole year,without the guesswork.

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

Nearby, measured,and named.

Best time to visit
Seto.

The whole year,
without the guesswork.

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

Nearby, measured,
and named.