Gejiu climate — normals and trends
Gejiu (China) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 17.3 °C and it receives 1,263 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 June (21.5 °C on average) and the coldest is January (10.9 °C). Rainfall peaks in August.
Gejiu averages 1 frost days, 4 hot days (≥ 30 °C) and 165 rainy days per year.
Gejiu has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.6 °C (on 1 June 1958) and the coldest -9.8 °C (on 18 December 2013).
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
GejiuYunnan
- coords
- 23.36°, 103.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.3°C
Average daily high
22.0°C
Average daily low
13.7°C
Annual rainfall
1,263mm
Sunshine / day
8.1h
Mean relative humidity
79%
Average peak wind
9.2km/h
Seasonal range
10.6°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
165 d/yr
Annual snowfall
0.8 cm
Average feels-like high
22.6 °C
Average feels-like low
14.0 °C
Average peak gust
33.9 km/h
Tropical nights (≥ 20 °C)
16 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.72 · 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
33.6 °C
1 June 1958
Coldest day
-9.8 °C
18 December 2013
Wettest day
161 mm
10 September 2019
Windiest day
24.6 km/h
1 March 1971
Strongest gust
85.0 km/h
8 June 1946
Hottest feels-like
35.7 °C
1 June 2023
Coldest feels-like
-14.1 °C
18 December 2013
Snowiest day
20.7 cm
28 December 1983
Sunniest day
13.3 h
14 June 2013
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 | 16.0 °C | -0.1 °C | 13 mm | -7 mm |
| Feb | 17.7 °C | -0.4 °C | 15 mm | -9 mm |
| Mar | 21.4 °C | -0.4 °C | 13 mm | -27 mm |
| Apr | 23.8 °C | -0.7 °C | 61 mm | +5 mm |
| May | 25.8 °C | +0.1 °C | 131 mm | +14 mm |
| Jun | 25.2 °C | -0.1 °C | 332 mm | +130 mm |
| Jul | 26.5 °C | +1.5 °C | 353 mm | +98 mm |
| Aug | 25.6 °C | +0.6 °C | 237 mm | -50 mm |
| Sep | 25.4 °C | +1.1 °C | 216 mm | +69 mm |
| Oct | 23.4 °C | +1.3 °C | 81 mm | +14 mm |
| Nov | 19.2 °C | -0.2 °C | 50 mm | +20 mm |
| Dec | 18.4 °C | +1.9 °C | 4 mm | -11 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 Gejiu?
Gejiu has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 17.3 °C and it receives 1,263 mm of precipitation per year.
What is the hottest day ever recorded in Gejiu?
The hottest day measured in Gejiu between 1940 and 2025 was 1 June 1958, reaching 33.6 °C.
What is the coldest day in Gejiu?
The coldest day measured in Gejiu between 1940 and 2025 was 18 December 2013, at -9.8 °C.
Does it snow in Gejiu?
Almost never: Gejiu sees virtually no snow, with about 1 frost days per year.
Has the climate of Gejiu warmed?
Yes: Gejiu warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gejiu?
The wettest day measured in Gejiu between 1940 and 2025 was 10 September 2019, with 161 mm of rain in 24 hours.
What was the windiest day in Gejiu?
The windiest day measured in Gejiu between 1940 and 2025 was 1 March 1971, with winds reaching 24.6 km/h.
What is the warmest month in Gejiu?
The warmest month in Gejiu is June (21.5 °C on average); the coldest is January (10.9 °C).
How much does it rain in Gejiu?
Gejiu receives on average 1,263 mm of precipitation per year, spread over about 165 rainy days.
Is it sunny in Gejiu?
Gejiu gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gejiu?
The heaviest 24-hour snowfall measured in Gejiu between 1940 and 2025 was 28 December 1983, with 20.7 cm.
Are there tropical nights in Gejiu?
Yes: Gejiu has on average 16 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gejiu?
In Gejiu, between 1940 and 2025, the highest apparent temperature reached 35.7 °C on 1 June 2023, and the lowest was -14.1 °C on 18 December 2013.
Compare Gejiu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gejiu