Nishinomiya climate

Name: Nishinomiya
Address: JP

Nishinomiya is warmest in August, with average highs of 31 °C, and coldest in January, when nights average 1.5 °C. July is the wettest month (206 mm) and January the driest (57 mm). Figures are 1991–2020 climate normals.

Across a full year Nishinomiya averages 1,561 mm of rain, 119 days above 25 °C and 17 days below freezing.

Japan · population 485,587 · 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 1.5 °C
Driest month January 57 mm
Wettest month July 206 mm
Least cloud December 48 % cloud
Hottest on record August 39 °C
Coldest on record February -5.4 °C
Warmest sea August 27 °C

What to expectNishinomiya through the year

Nishinomiya has a clear annual cycle: average daily highs run from 8.3 °C in January to 31 °C in August, a swing of 23 °C in mean temperature across the year.

Counted across a normal year, 119 days a year reach 25 °C, 46 of them reach 30 °C, 17 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in August.

Rain is strongly seasonal. July averages 206 mm against 57 mm in January — 3.6 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Nishinomiya is warmest in August at 27 °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	8.3 °C	57 mm	51 %
February	9.2 °C	69 mm	55 %
March	12.8 °C	110 mm	57 %
April	18.2 °C	128 mm	59 %
May	23.0 °C	149 mm	65 %
June	26.3 °C	203 mm	78 %
July	29.7 °C	206 mm	71 %
August	31.3 °C	132 mm	59 %
September	27.5 °C	194 mm	61 %
October	21.8 °C	164 mm	53 %
November	16.2 °C	83 mm	50 %
December	10.7 °C	66 mm	48 %

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	8.3 °C	1.5 °C	4.5 °C	16.7 °C	-3.9 °C	0	0	7
February	9.2 °C	1.7 °C	5.1 °C	19.8 °C	-5.4 °C	0	0	7
March	12.8 °C	4.5 °C	8.4 °C	21.2 °C	-2.3 °C	0	0	2
April	18.2 °C	9.7 °C	13.7 °C	27.8 °C	0.8 °C	0	0	0
May	23.0 °C	14.8 °C	18.6 °C	30.0 °C	5.9 °C	8	0	0
June	26.3 °C	19.3 °C	22.5 °C	34.4 °C	11.9 °C	21	1	0
July	29.7 °C	23.6 °C	26.3 °C	36.3 °C	17.0 °C	30	15	0
August	31.3 °C	24.6 °C	27.5 °C	39.4 °C	18.5 °C	31	23	0
September	27.5 °C	20.8 °C	23.7 °C	35.2 °C	12.0 °C	24	6	0
October	21.8 °C	14.8 °C	17.9 °C	30.0 °C	5.4 °C	4	0	0
November	16.2 °C	9.0 °C	12.3 °C	25.1 °C	2.3 °C	0	0	0
December	10.7 °C	3.8 °C	6.9 °C	21.5 °C	-3.2 °C	0	0	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	57 mm	6	10 h/day	51 %	75 %	17 km/h	14.3 °C
February	69 mm	7	11 h/day	55 %	73 %	17 km/h	13.0 °C
March	110 mm	10	12 h/day	57 %	72 %	18 km/h	13.3 °C
April	128 mm	10	13 h/day	59 %	72 %	17 km/h	15.1 °C
May	149 mm	10	14 h/day	65 %	75 %	16 km/h	17.8 °C
June	203 mm	14	14 h/day	78 %	79 %	15 km/h	21.2 °C
July	206 mm	15	14 h/day	71 %	82 %	15 km/h	24.7 °C
August	132 mm	13	13 h/day	59 %	78 %	15 km/h	26.8 °C
September	194 mm	13	12 h/day	61 %	78 %	16 km/h	25.8 °C
October	164 mm	10	11 h/day	53 %	77 %	15 km/h	22.9 °C
November	83 mm	7	10 h/day	50 %	77 %	15 km/h	19.5 °C
December	66 mm	7	9.8 h/day	48 %	76 %	17 km/h	16.6 °C

How Nishinomiya 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
Nishinomiya	31 °C	1.5 °C	1,561 mm	119
Kobe · Japan	30 °C	2.1 °C	1,569 mm	110
Osaka · Japan	32 °C	1.2 °C	1,455 mm	118
Sakai · Japan	31 °C	1.3 °C	1,449 mm	113
Izumi · Japan	31 °C	0.6 °C	1,456 mm	107
Kishiwada · Japan	31 °C	0.8 °C	1,481 mm	110
Akashi · Japan	30 °C	2.2 °C	1,438 mm	98

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

QuestionsCommon questions about Nishinomiya’s climate

When is the best time to visit Nishinomiya?

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 Nishinomiya get?

In August, the warmest month, daily highs average 31 °C. About 46 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average 1.5 °C in January, the coldest month. A normal year has 17 nights below freezing.

Which month is wettest in Nishinomiya?

July, averaging 206 mm over 15 days with rain. The driest month is January with 57 mm. The year as a whole averages 1,561 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 Nishinomiya 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: 34.716°, 135.332° (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.