Beihai climate

Name: Beihai
Address: CN

Beihai is warmest in July, with average highs of 30 °C, and coldest in January, when nights average 13 °C. August is the wettest month (332 mm) and February the driest (24 mm). Figures are 1991–2020 climate normals.

Across a full year Beihai averages 1,653 mm of rain and 228 days above 25 °C.

China · population 525,329 · 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 30 °C
Coldest month January 13 °C
Driest month February 24 mm
Wettest month August 332 mm
Least cloud October 43 % cloud
Hottest on record July 36 °C
Coldest on record January 3.9 °C
Warmest sea August 30 °C

What to expectBeihai through the year

Beihai has a clear annual cycle: average daily highs run from 18 °C in January to 30 °C in July, a swing of 13 °C in mean temperature across the year.

Counted across a normal year, 228 days a year reach 25 °C, 73 of them reach 30 °C. The warmest reading in the 1991–2020 record is 36 °C, in July.

Rain is strongly seasonal. August averages 332 mm against 24 mm in February — 14 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Beihai is warmest in August at 30 °C and coldest in January at 19 °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	18.4 °C	32 mm	62 %
February	19.8 °C	24 mm	64 %
March	22.9 °C	44 mm	64 %
April	26.3 °C	68 mm	60 %
May	28.9 °C	166 mm	69 %
June	30.0 °C	306 mm	84 %
July	30.2 °C	329 mm	78 %
August	30.0 °C	332 mm	76 %
September	29.5 °C	203 mm	62 %
October	27.7 °C	69 mm	43 %
November	24.4 °C	45 mm	45 %
December	20.0 °C	33 mm	54 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	18.4 °C	13.2 °C	15.8 °C	25.6 °C	3.9 °C	0	0
February	19.8 °C	14.9 °C	17.3 °C	27.1 °C	4.9 °C	1	0
March	22.9 °C	17.9 °C	20.4 °C	29.4 °C	7.7 °C	8	0
April	26.3 °C	22.0 °C	24.0 °C	30.9 °C	12.2 °C	23	0
May	28.9 °C	25.2 °C	27.0 °C	34.0 °C	18.5 °C	30	7
June	30.0 °C	27.1 °C	28.6 °C	33.3 °C	23.1 °C	30	17
July	30.2 °C	27.4 °C	28.7 °C	35.6 °C	24.2 °C	31	19
August	30.0 °C	26.9 °C	28.4 °C	33.6 °C	23.5 °C	31	16
September	29.5 °C	25.6 °C	27.4 °C	33.6 °C	18.5 °C	30	11
October	27.7 °C	22.9 °C	25.2 °C	32.0 °C	15.5 °C	28	2
November	24.4 °C	19.0 °C	21.6 °C	30.6 °C	8.3 °C	15	0
December	20.0 °C	14.5 °C	17.2 °C	27.3 °C	4.1 °C	1	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	32 mm	6	11 h/day	62 %	77 %	20 km/h	19.0 °C
February	24 mm	5	11 h/day	64 %	80 %	20 km/h	19.1 °C
March	44 mm	7	12 h/day	64 %	82 %	20 km/h	20.7 °C
April	68 mm	10	13 h/day	60 %	83 %	19 km/h	23.6 °C
May	166 mm	18	13 h/day	69 %	82 %	19 km/h	27.3 °C
June	306 mm	23	13 h/day	84 %	82 %	21 km/h	29.1 °C
July	329 mm	22	13 h/day	78 %	82 %	22 km/h	29.4 °C
August	332 mm	25	13 h/day	76 %	83 %	19 km/h	29.5 °C
September	203 mm	19	12 h/day	62 %	81 %	18 km/h	29.1 °C
October	69 mm	8	12 h/day	43 %	75 %	19 km/h	27.3 °C
November	45 mm	5	11 h/day	45 %	73 %	20 km/h	24.4 °C
December	33 mm	5	11 h/day	54 %	71 %	21 km/h	21.1 °C

How Beihai 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
Beihai	30 °C	13 °C	1,653 mm	228
Hepu · China	31 °C	12 °C	1,793 mm	251
Qinzhou · China	31 °C	11 °C	1,605 mm	240
Fangchenggang · China	31 °C	11 °C	1,761 mm	227
Zhanjiang · China	31 °C	13 °C	1,478 mm	255
Yulin · China	31 °C	9.9 °C	1,789 mm	240
Nanning · China	31 °C	9.7 °C	1,584 mm	225

Where Beihai ranks

Ranking	Position	Value
Best beach destinations in Asia in October	38th of 50	89/100
Best beach destinations in Asia in April	41st of 50	83/100
Best beach destinations in Asia in November	49th of 50	90/100

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

QuestionsCommon questions about Beihai’s climate

When is the best time to visit Beihai?

That depends on what you want, so the honest answer is a comparison rather than a single month. February, March, November 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 Beihai get?

In July, the warmest month, daily highs average 30 °C. About 73 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 13 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Beihai?

August, averaging 332 mm over 25 days with rain. The driest month is February with 24 mm. The year as a whole averages 1,653 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 Beihai 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: 21.483°, 109.115° (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.