Matsuyama climate

Name: Matsuyama
Address: JP

Matsuyama is warmest in August, with average highs of 31 °C, and coldest in January, when nights average 3.4 °C. June is the wettest month (270 mm) and January the driest (71 mm). Figures are 1991–2020 climate normals.

Across a full year Matsuyama averages 1,697 mm of rain, 115 days above 25 °C and 3 days below freezing.

Japan · population 511,192 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 31 °C
Coldest month January 3.4 °C
Driest month January 71 mm
Wettest month June 270 mm
Least cloud November 51 % cloud
Hottest on record July 36 °C
Coldest on record February -4.4 °C
Warmest sea August 26 °C

What to expectMatsuyama through the year

Matsuyama has a clear annual cycle: average daily highs run from 8.8 °C in January to 31 °C in August, a swing of 22 °C in mean temperature across the year.

Counted across a normal year, 115 days a year reach 25 °C, 40 of them reach 30 °C, 3 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in July.

Rain is strongly seasonal. June averages 270 mm against 71 mm in January — 3.8 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Matsuyama is warmest in August at 26 °C and coldest in February at 13 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	8.8 °C	71 mm	58 %
February	9.9 °C	80 mm	57 %
March	13.4 °C	116 mm	58 %
April	18.5 °C	135 mm	60 %
May	22.8 °C	151 mm	65 %
June	25.9 °C	270 mm	79 %
July	29.5 °C	228 mm	70 %
August	30.6 °C	154 mm	61 %
September	27.2 °C	190 mm	61 %
October	22.1 °C	137 mm	52 %
November	16.7 °C	83 mm	51 %
December	11.2 °C	83 mm	53 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	8.8 °C	3.4 °C	5.9 °C	18.9 °C	-3.8 °C	0	0	1
February	9.9 °C	3.6 °C	6.6 °C	20.9 °C	-4.4 °C	0	0	1
March	13.4 °C	6.2 °C	9.6 °C	23.5 °C	-0.1 °C	0	0	0
April	18.5 °C	10.7 °C	14.4 °C	27.6 °C	2.6 °C	0	0	0
May	22.8 °C	15.5 °C	19.0 °C	29.7 °C	8.7 °C	5	0	0
June	25.9 °C	19.9 °C	22.7 °C	32.0 °C	13.7 °C	20	1	0
July	29.5 °C	24.1 °C	26.6 °C	35.5 °C	18.4 °C	30	14	0
August	30.6 °C	24.8 °C	27.5 °C	35.5 °C	19.6 °C	31	21	0
September	27.2 °C	21.5 °C	24.1 °C	34.6 °C	13.5 °C	24	4	0
October	22.1 °C	16.1 °C	18.8 °C	30.1 °C	8.6 °C	4	0	0
November	16.7 °C	10.7 °C	13.4 °C	26.2 °C	1.8 °C	0	0	0
December	11.2 °C	5.7 °C	8.2 °C	23.1 °C	-1.4 °C	0	0	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	71 mm	11	10 h/day	58 %	74 %	17 km/h	14.8 °C
February	80 mm	10	11 h/day	57 %	74 %	16 km/h	13.2 °C
March	116 mm	13	12 h/day	58 %	74 %	16 km/h	13.4 °C
April	135 mm	11	13 h/day	60 %	75 %	15 km/h	14.8 °C
May	151 mm	11	14 h/day	65 %	78 %	12 km/h	17.2 °C
June	270 mm	16	14 h/day	79 %	84 %	12 km/h	20.5 °C
July	228 mm	16	14 h/day	70 %	85 %	12 km/h	24.2 °C
August	154 mm	15	13 h/day	61 %	82 %	11 km/h	26.1 °C
September	190 mm	13	12 h/day	61 %	82 %	13 km/h	25.1 °C
October	137 mm	9	11 h/day	52 %	79 %	14 km/h	22.9 °C
November	83 mm	9	10 h/day	51 %	77 %	14 km/h	20.2 °C
December	83 mm	11	9.9 h/day	53 %	76 %	16 km/h	17.3 °C

How Matsuyama compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Matsuyama	31 °C	3.4 °C	1,697 mm	115
Shinagawa · Japan	30 °C	0.4 °C	1,992 mm	108
Imabari · Japan	30 °C	4.2 °C	1,653 mm	100
Kure · Japan	29 °C	3.4 °C	1,527 mm	82
Higashihiroshima · Japan	29 °C	0.3 °C	1,413 mm	94
Hiroshima · Japan	30 °C	1.6 °C	1,563 mm	110
Kochi · Japan	30 °C	2.2 °C	2,597 mm	111

Planning a trip? See the best time to visit Matsuyama.

QuestionsCommon questions about Matsuyama’s climate

When is the best time to visit Matsuyama?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, October sit closest to 20 °C on average, August is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Matsuyama get?

In August, the warmest month, daily highs average 31 °C. About 40 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average 3.4 °C in January, the coldest month. A normal year has 3 nights below freezing.

Which month is wettest in Matsuyama?

June, averaging 270 mm over 16 days with rain. The driest month is January with 71 mm. The year as a whole averages 1,697 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Matsuyama rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.