Shinagawa climate

Name: Shinagawa
Address: JP

Shinagawa is warmest in August, with average highs of 30 °C, and coldest in January, when nights average 0.4 °C. June is the wettest month (302 mm) and January the driest (77 mm). Figures are 1991–2020 climate normals.

Across a full year Shinagawa averages 1,992 mm of rain, 108 days above 25 °C and 34 days below freezing.

Japan · population 422,488 · 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 30 °C
Coldest month January 0.4 °C
Driest month January 77 mm
Wettest month June 302 mm
Least cloud November 55 % cloud
Hottest on record August 36 °C
Coldest on record January -12 °C

What to expectShinagawa through the year

Shinagawa has a clear annual cycle: average daily highs run from 7.2 °C in January to 30 °C in August, a swing of 22 °C in mean temperature across the year.

Counted across a normal year, 108 days a year reach 25 °C, 31 of them reach 30 °C, 34 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in August.

Rain is strongly seasonal. June averages 302 mm against 77 mm in January — 3.9 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	7.2 °C	77 mm	59 %
February	8.7 °C	90 mm	60 %
March	12.9 °C	131 mm	62 %
April	18.2 °C	149 mm	63 %
May	22.7 °C	174 mm	68 %
June	25.6 °C	302 mm	82 %
July	29.2 °C	268 mm	75 %
August	29.7 °C	209 mm	66 %
September	26.5 °C	246 mm	67 %
October	21.4 °C	168 mm	57 %
November	15.7 °C	93 mm	55 %
December	9.7 °C	85 mm	56 %

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	7.2 °C	0.4 °C	3.3 °C	17.7 °C	-12.3 °C	0	0	13
February	8.7 °C	1.0 °C	4.3 °C	21.2 °C	-11.4 °C	0	0	12
March	12.9 °C	4.0 °C	7.9 °C	22.7 °C	-4.3 °C	0	0	4
April	18.2 °C	8.8 °C	13.1 °C	28.4 °C	-0.4 °C	1	0	0
May	22.7 °C	13.8 °C	17.9 °C	30.5 °C	4.9 °C	6	0	0
June	25.6 °C	18.3 °C	21.6 °C	32.3 °C	10.7 °C	18	1	0
July	29.2 °C	22.5 °C	25.3 °C	35.3 °C	16.4 °C	29	13	0
August	29.7 °C	22.9 °C	25.7 °C	35.6 °C	17.1 °C	30	15	0
September	26.5 °C	19.4 °C	22.4 °C	33.1 °C	10.6 °C	22	2	0
October	21.4 °C	13.5 °C	16.9 °C	29.5 °C	4.4 °C	3	0	0
November	15.7 °C	7.7 °C	11.2 °C	25.6 °C	-0.8 °C	0	0	0
December	9.7 °C	2.5 °C	5.6 °C	20.1 °C	-5.8 °C	0	0	5

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	77 mm	12	10 h/day	59 %	80 %	14 km/h
February	90 mm	11	11 h/day	60 %	78 %	13 km/h
March	131 mm	14	12 h/day	62 %	77 %	13 km/h
April	149 mm	12	13 h/day	63 %	77 %	13 km/h
May	174 mm	12	14 h/day	68 %	78 %	11 km/h
June	302 mm	18	14 h/day	82 %	85 %	9.9 km/h
July	268 mm	19	14 h/day	75 %	85 %	10 km/h
August	209 mm	17	13 h/day	66 %	85 %	9.8 km/h
September	246 mm	15	12 h/day	67 %	85 %	10 km/h
October	168 mm	10	11 h/day	57 %	83 %	10 km/h
November	93 mm	10	10 h/day	55 %	82 %	11 km/h
December	85 mm	11	9.9 h/day	56 %	82 %	13 km/h

How Shinagawa 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
Shinagawa	30 °C	0.4 °C	1,992 mm	108
Matsuyama · Japan	31 °C	3.4 °C	1,697 mm	115
Imabari · Japan	30 °C	4.2 °C	1,653 mm	100
Kochi · Japan	30 °C	2.2 °C	2,597 mm	111
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

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

QuestionsCommon questions about Shinagawa’s climate

When is the best time to visit Shinagawa?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September 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 Shinagawa get?

In August, the warmest month, daily highs average 30 °C. About 31 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 0.4 °C in January, the coldest month. A normal year has 34 nights below freezing.

Which month is wettest in Shinagawa?

June, averaging 302 mm over 18 days with rain. The driest month is January with 77 mm. The year as a whole averages 1,992 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 Shinagawa 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.