Naha climate

Name: Naha
Address: JP

Naha is warmest in July, with average highs of 29 °C, and coldest in January, when nights average 16 °C. May is the wettest month (214 mm) and February the driest (97 mm). Figures are 1991–2020 climate normals.

Across a full year Naha averages 1,753 mm of rain and 171 days above 25 °C.

Japan · population 317,625 · 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 July 29 °C
Coldest month January 16 °C
Driest month February 97 mm
Wettest month May 214 mm
Least cloud October 55 % cloud
Hottest on record August 33 °C
Coldest on record January 9.1 °C
Warmest sea August 29 °C

What to expectNaha through the year

Naha has a clear annual cycle: average daily highs run from 19 °C in January to 29 °C in July, a swing of 11 °C in mean temperature across the year.

Counted across a normal year, 171 days a year reach 25 °C, 12 of them reach 30 °C. The warmest reading in the 1991–2020 record is 33 °C, in August.

Rain is strongly seasonal. May averages 214 mm against 97 mm in February — 2.2 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Naha is warmest in August at 29 °C and coldest in February at 22 °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	18.8 °C	102 mm	72 %
February	19.0 °C	97 mm	71 %
March	20.4 °C	129 mm	67 %
April	22.5 °C	149 mm	67 %
May	25.0 °C	214 mm	71 %
June	27.6 °C	214 mm	77 %
July	29.3 °C	130 mm	60 %
August	29.3 °C	178 mm	56 %
September	28.3 °C	196 mm	55 %
October	26.2 °C	139 mm	55 %
November	23.6 °C	101 mm	62 %
December	20.4 °C	104 mm	67 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	18.8 °C	16.4 °C	17.6 °C	24.3 °C	9.1 °C	0	0
February	19.0 °C	16.4 °C	17.7 °C	25.2 °C	9.9 °C	0	0
March	20.4 °C	17.8 °C	19.1 °C	25.2 °C	9.4 °C	0	0
April	22.5 °C	20.1 °C	21.3 °C	27.0 °C	13.4 °C	2	0
May	25.0 °C	22.8 °C	23.8 °C	29.2 °C	17.1 °C	16	0
June	27.6 °C	25.7 °C	26.6 °C	30.2 °C	19.3 °C	29	0
July	29.3 °C	27.2 °C	28.2 °C	32.4 °C	23.4 °C	31	6
August	29.3 °C	27.2 °C	28.2 °C	32.6 °C	24.5 °C	31	5
September	28.3 °C	26.3 °C	27.3 °C	32.1 °C	21.5 °C	30	1
October	26.2 °C	24.3 °C	25.2 °C	30.5 °C	19.3 °C	24	0
November	23.6 °C	21.6 °C	22.6 °C	28.3 °C	14.9 °C	7	0
December	20.4 °C	18.2 °C	19.3 °C	26.5 °C	11.2 °C	0	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	102 mm	11	11 h/day	72 %	65 %	34 km/h	22.6 °C
February	97 mm	12	11 h/day	71 %	68 %	33 km/h	21.7 °C
March	129 mm	13	12 h/day	67 %	71 %	31 km/h	21.8 °C
April	149 mm	14	13 h/day	67 %	77 %	29 km/h	22.8 °C
May	214 mm	14	13 h/day	71 %	82 %	27 km/h	24.7 °C
June	214 mm	16	14 h/day	77 %	86 %	29 km/h	26.8 °C
July	130 mm	12	14 h/day	60 %	83 %	28 km/h	28.7 °C
August	178 mm	16	13 h/day	56 %	82 %	29 km/h	28.9 °C
September	196 mm	15	12 h/day	55 %	79 %	30 km/h	28.3 °C
October	139 mm	12	12 h/day	55 %	74 %	32 km/h	27.1 °C
November	101 mm	10	11 h/day	62 %	69 %	33 km/h	25.4 °C
December	104 mm	11	11 h/day	67 %	66 %	34 km/h	23.9 °C

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

QuestionsCommon questions about Naha’s climate

When is the best time to visit Naha?

That depends on what you want, so the honest answer is a comparison rather than a single month. March, April, December sit closest to 20 °C on average, July is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Naha get?

In July, the warmest month, daily highs average 29 °C. About 12 days a year pass 30 °C. The highest value in the 1991–2020 record is 33 °C.

How cold does it get in winter?

Nights average 16 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Naha?

May, averaging 214 mm over 14 days with rain. The driest month is February with 97 mm. The year as a whole averages 1,753 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 Naha 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: 26.213°, 127.679° (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.