Shanwei climate

Name: Shanwei
Address: CN

Shanwei is warmest in August, with average highs of 30 °C, and coldest in January, when nights average 12 °C. June is the wettest month (352 mm) and January the driest (29 mm). Figures are 1991–2020 climate normals.

Across a full year Shanwei averages 1,877 mm of rain and 214 days above 25 °C.

China · population 491,766 · 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 12 °C
Driest month January 29 mm
Wettest month June 352 mm
Least cloud November 46 % cloud
Hottest on record August 35 °C
Coldest on record January 1.3 °C
Warmest sea July 29 °C

What to expectShanwei through the year

Shanwei has a clear annual cycle: average daily highs run from 19 °C in January to 30 °C in August, a swing of 12 °C in mean temperature across the year.

Counted across a normal year, 214 days a year reach 25 °C, 42 of them reach 30 °C. The warmest reading in the 1991–2020 record is 35 °C, in August.

Rain is strongly seasonal. June averages 352 mm against 29 mm in January — 12 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Shanwei is warmest in July at 29 °C and coldest in January at 20 °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	19.0 °C	29 mm	51 %
February	19.8 °C	46 mm	66 %
March	22.2 °C	80 mm	72 %
April	24.9 °C	151 mm	76 %
May	27.2 °C	256 mm	79 %
June	28.6 °C	352 mm	86 %
July	29.5 °C	277 mm	77 %
August	29.6 °C	341 mm	76 %
September	29.1 °C	210 mm	63 %
October	27.4 °C	58 mm	48 %
November	24.5 °C	41 mm	46 %
December	20.4 °C	35 mm	46 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	19.0 °C	11.6 °C	15.1 °C	26.5 °C	1.3 °C	0	0
February	19.8 °C	13.1 °C	16.2 °C	27.1 °C	4.9 °C	1	0
March	22.2 °C	16.0 °C	18.8 °C	28.8 °C	5.8 °C	5	0
April	24.9 °C	19.8 °C	22.0 °C	29.9 °C	11.5 °C	16	0
May	27.2 °C	23.1 °C	24.9 °C	33.0 °C	17.2 °C	28	1
June	28.6 °C	25.3 °C	26.7 °C	34.6 °C	19.4 °C	29	5
July	29.5 °C	25.9 °C	27.5 °C	34.5 °C	22.9 °C	31	12
August	29.6 °C	25.7 °C	27.4 °C	35.1 °C	23.3 °C	31	13
September	29.1 °C	24.5 °C	26.5 °C	33.8 °C	18.4 °C	29	9
October	27.4 °C	21.3 °C	24.0 °C	33.0 °C	13.8 °C	29	2
November	24.5 °C	17.5 °C	20.6 °C	30.4 °C	8.3 °C	14	0
December	20.4 °C	12.9 °C	16.4 °C	27.9 °C	2.3 °C	1	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	29 mm	5	11 h/day	51 %	71 %	12 km/h	19.5 °C
February	46 mm	7	11 h/day	66 %	76 %	12 km/h	19.7 °C
March	80 mm	11	12 h/day	72 %	80 %	13 km/h	20.8 °C
April	151 mm	14	13 h/day	76 %	84 %	13 km/h	22.7 °C
May	256 mm	21	13 h/day	79 %	87 %	13 km/h	25.5 °C
June	352 mm	25	14 h/day	86 %	89 %	14 km/h	27.8 °C
July	277 mm	24	13 h/day	77 %	88 %	14 km/h	28.5 °C
August	341 mm	24	13 h/day	76 %	88 %	12 km/h	28.5 °C
September	210 mm	18	12 h/day	63 %	83 %	12 km/h	28.2 °C
October	58 mm	6	12 h/day	48 %	76 %	12 km/h	26.2 °C
November	41 mm	5	11 h/day	46 %	72 %	12 km/h	23.2 °C
December	35 mm	4	11 h/day	46 %	69 %	12 km/h	20.5 °C

How Shanwei 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
Shanwei	30 °C	12 °C	1,877 mm	214
Donghai · China	30 °C	11 °C	1,776 mm	233
Huizhou · China	31 °C	9.5 °C	1,788 mm	241
Puning · China	31 °C	10 °C	1,568 mm	231
Ma On Shan · Hong Kong	29 °C	12 °C	1,749 mm	191
Heyuan · China	31 °C	8.5 °C	1,667 mm	226
Tai Po · Hong Kong	31 °C	12 °C	1,739 mm	229

Where Shanwei ranks

Ranking	Position	Value
Best beach destinations in Asia in October	18th of 50	93/100
Places with the best weather in Asia in December	24th of 50	96/100
Places with the best weather in the world in December	38th of 50	96/100
Best beach destinations in Asia in May	47th of 50	75/100
Best beach destinations in Asia in November	47th of 50	90/100
Best beach destinations in the world in October	50th of 50	93/100

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

QuestionsCommon questions about Shanwei’s climate

When is the best time to visit Shanwei?

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

In August, the warmest month, daily highs average 30 °C. About 42 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 12 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Shanwei?

June, averaging 352 mm over 25 days with rain. The driest month is January with 29 mm. The year as a whole averages 1,877 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 Shanwei 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: 22.782°, 115.347° (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.