Shizuoka climate

Name: Shizuoka
Address: JP

Shizuoka is warmest in August, with average highs of 29 °C, and coldest in January, when nights average 2.6 °C. July is the wettest month (314 mm) and December the driest (90 mm). Figures are 1991–2020 climate normals.

Across a full year Shizuoka averages 2,441 mm of rain, 89 days above 25 °C and 9 days below freezing.

Japan · population 693,389 · 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 29 °C
Coldest month January 2.6 °C
Driest month December 90 mm
Wettest month July 314 mm
Least cloud December 38 % cloud
Hottest on record August 37 °C
Coldest on record February -7.4 °C
Warmest sea August 27 °C

What to expectShizuoka through the year

Shizuoka has a clear annual cycle: average daily highs run from 9.6 °C in January to 29 °C in August, a swing of 20 °C in mean temperature across the year.

Counted across a normal year, 89 days a year reach 25 °C, 15 of them reach 30 °C, 9 nights drop below freezing. The warmest reading in the 1991–2020 record is 37 °C, in August.

Rain is strongly seasonal. July averages 314 mm against 90 mm in December — 3.5 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Shizuoka is warmest in August at 27 °C and coldest in February at 15 °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	9.6 °C	93 mm	39 %
February	10.3 °C	122 mm	47 %
March	13.2 °C	205 mm	56 %
April	17.4 °C	221 mm	61 %
May	21.2 °C	235 mm	69 %
June	24.0 °C	296 mm	81 %
July	27.6 °C	314 mm	75 %
August	28.7 °C	188 mm	63 %
September	25.9 °C	280 mm	65 %
October	21.4 °C	247 mm	59 %
November	16.8 °C	148 mm	49 %
December	11.9 °C	90 mm	38 %

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	9.6 °C	2.6 °C	5.8 °C	18.8 °C	-3.5 °C	0	0	4
February	10.3 °C	2.8 °C	6.3 °C	21.6 °C	-7.4 °C	0	0	4
March	13.2 °C	5.4 °C	9.2 °C	23.8 °C	-2.2 °C	0	0	1
April	17.4 °C	9.7 °C	13.5 °C	25.7 °C	0.5 °C	0	0	0
May	21.2 °C	14.1 °C	17.6 °C	29.2 °C	6.6 °C	2	0	0
June	24.0 °C	18.5 °C	21.1 °C	32.7 °C	12.2 °C	9	1	0
July	27.6 °C	22.4 °C	24.8 °C	34.4 °C	17.2 °C	25	5	0
August	28.7 °C	23.5 °C	25.9 °C	36.7 °C	18.2 °C	30	8	0
September	25.9 °C	20.9 °C	23.2 °C	33.9 °C	12.8 °C	19	1	0
October	21.4 °C	15.8 °C	18.4 °C	30.5 °C	7.1 °C	3	0	0
November	16.8 °C	10.3 °C	13.3 °C	24.1 °C	2.9 °C	0	0	0
December	11.9 °C	5.1 °C	8.3 °C	21.6 °C	-1.4 °C	0	0	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	93 mm	9	10 h/day	39 %	66 %	19 km/h	16.1 °C
February	122 mm	10	11 h/day	47 %	67 %	19 km/h	15.2 °C
March	205 mm	14	12 h/day	56 %	72 %	20 km/h	15.5 °C
April	221 mm	13	13 h/day	61 %	75 %	19 km/h	16.9 °C
May	235 mm	14	14 h/day	69 %	81 %	17 km/h	19.1 °C
June	296 mm	17	15 h/day	81 %	86 %	16 km/h	21.6 °C
July	314 mm	17	14 h/day	75 %	88 %	16 km/h	24.4 °C
August	188 mm	16	13 h/day	63 %	86 %	15 km/h	26.5 °C
September	280 mm	16	12 h/day	65 %	84 %	16 km/h	25.7 °C
October	247 mm	13	11 h/day	59 %	80 %	16 km/h	23.3 °C
November	148 mm	10	10 h/day	49 %	76 %	16 km/h	20.9 °C
December	90 mm	8	9.8 h/day	38 %	70 %	18 km/h	18.3 °C

How Shizuoka 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
Shizuoka	29 °C	2.6 °C	2,441 mm	89
Fuji · Japan	29 °C	2.3 °C	2,387 mm	99
Numazu · Japan	29 °C	3.1 °C	2,119 mm	91
Hamamatsu · Japan	30 °C	1.9 °C	2,016 mm	105
Odawara · Japan	28 °C	2.5 °C	2,137 mm	71
Kofu · Japan	29 °C	-2.3 °C	1,593 mm	101

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

QuestionsCommon questions about Shizuoka’s climate

When is the best time to visit Shizuoka?

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 December the driest. The month-by-month table above has the full picture.

How hot does Shizuoka get?

In August, the warmest month, daily highs average 29 °C. About 15 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 2.6 °C in January, the coldest month. A normal year has 9 nights below freezing.

Which month is wettest in Shizuoka?

July, averaging 314 mm over 17 days with rain. The driest month is December with 90 mm. The year as a whole averages 2,441 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 Shizuoka 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
Data point: 34.983°, 138.383° (the coordinates the reanalysis values are taken for)
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.