Beihai climate — normals and trends
Beihai (China) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 15.6 °C and it receives 2,027 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (20.1 °C on average) and the coldest is January (9.0 °C). Rainfall peaks in July.
Beihai averages 13 frost days, 0 hot days (≥ 30 °C) and 200 rainy days per year.
Beihai has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 21 to 5 per year over the period.
The hottest day of the period reached 31.7 °C (on 25 May 2012) and the coldest -6.2 °C (on 9 January 1980).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BeihaiYunnan
- coords
- 25.08°, 98.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.6°C
Average daily high
21.3°C
Average daily low
10.6°C
Annual rainfall
2,027mm
Sunshine / day
8.7h
Mean relative humidity
79%
Average peak wind
7.4km/h
Seasonal range
11.1°C
Frost days (< 0 °C)
13 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
200 d/yr
Annual snowfall
0.1 cm
Average feels-like high
22.0 °C
Average feels-like low
10.4 °C
Average peak gust
33.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.79 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
31.7 °C
25 May 2012
Coldest day
-6.2 °C
9 January 1980
Wettest day
116 mm
8 July 1976
Windiest day
20.2 km/h
4 March 1946
Strongest gust
77.4 km/h
11 April 1985
Hottest feels-like
35.2 °C
14 July 2022
Coldest feels-like
-10.4 °C
9 January 1980
Snowiest day
3.9 cm
3 March 1986
Sunniest day
13.0 h
11 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 18.4 °C | +1.6 °C | 23 mm | -9 mm |
| Feb | 19.5 °C | +1.3 °C | 16 mm | -29 mm |
| Mar | 21.4 °C | +0.5 °C | 73 mm | +11 mm |
| Apr | 23.5 °C | +0.8 °C | 78 mm | -12 mm |
| May | 23.0 °C | -0.6 °C | 269 mm | +100 mm |
| Jun | 24.9 °C | +1.6 °C | 461 mm | +92 mm |
| Jul | 25.2 °C | +2.4 °C | 437 mm | -41 mm |
| Aug | 24.2 °C | +0.5 °C | 305 mm | -58 mm |
| Sep | 25.6 °C | +1.7 °C | 187 mm | -11 mm |
| Oct | 23.8 °C | +1.5 °C | 145 mm | +5 mm |
| Nov | 20.5 °C | +0.8 °C | 73 mm | +20 mm |
| Dec | 19.0 °C | +1.7 °C | 0 mm | -28 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Beihai?
Beihai has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 15.6 °C and it receives 2,027 mm of precipitation per year.
What is the hottest day ever recorded in Beihai?
The hottest day measured in Beihai between 1940 and 2025 was 25 May 2012, reaching 31.7 °C.
What is the coldest day in Beihai?
The coldest day measured in Beihai between 1940 and 2025 was 9 January 1980, at -6.2 °C.
Does it snow in Beihai?
Almost never: Beihai sees virtually no snow, with about 13 frost days per year.
Has the climate of Beihai warmed?
Yes: Beihai warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Beihai?
The wettest day measured in Beihai between 1940 and 2025 was 8 July 1976, with 116 mm of rain in 24 hours.
What was the windiest day in Beihai?
The windiest day measured in Beihai between 1940 and 2025 was 4 March 1946, with winds reaching 20.2 km/h.
What is the warmest month in Beihai?
The warmest month in Beihai is August (20.1 °C on average); the coldest is January (9.0 °C).
How much does it rain in Beihai?
Beihai receives on average 2,027 mm of precipitation per year, spread over about 200 rainy days.
Is it sunny in Beihai?
Beihai gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Beihai?
The heaviest 24-hour snowfall measured in Beihai between 1940 and 2025 was 3 March 1986, with 3.9 cm.
Are there tropical nights in Beihai?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Beihai.
What was the most extreme apparent temperature in Beihai?
In Beihai, between 1940 and 2025, the highest apparent temperature reached 35.2 °C on 14 July 2022, and the lowest was -10.4 °C on 9 January 1980.
Compare Beihai with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Beihai