Longshan climate — normals and trends
Longshan (China) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 16.4 °C and it receives 2,270 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 (20.2 °C on average) and the coldest is January (10.2 °C). Rainfall peaks in July.
Longshan averages 1 frost days, 1 hot days (≥ 30 °C) and 204 rainy days per year.
Longshan has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.9 °C (on 20 May 2019) and the coldest -3.4 °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
LongshanYunnan
- coords
- 24.60°, 98.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.4°C
Average daily high
21.8°C
Average daily low
12.3°C
Annual rainfall
2,270mm
Sunshine / day
9.0h
Mean relative humidity
78%
Average peak wind
9.2km/h
Seasonal range
10.0°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
204 d/yr
Annual snowfall
0.0 cm
Average feels-like high
22.5 °C
Average feels-like low
12.4 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °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
31.9 °C
20 May 2019
Coldest day
-3.4 °C
9 January 1980
Wettest day
117 mm
18 August 2020
Windiest day
22.6 km/h
9 February 1945
Strongest gust
78.5 km/h
31 October 1962
Hottest feels-like
36.5 °C
29 August 2019
Coldest feels-like
-6.8 °C
9 January 1980
Snowiest day
1.1 cm
3 March 1986
Sunniest day
13.0 h
2 June 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 | 18.5 °C | +1.4 °C | 19 mm | -14 mm |
| Feb | 20.5 °C | +1.6 °C | 6 mm | -34 mm |
| Mar | 23.5 °C | +1.5 °C | 37 mm | -23 mm |
| Apr | 24.7 °C | +0.9 °C | 72 mm | -28 mm |
| May | 23.8 °C | -0.4 °C | 334 mm | +120 mm |
| Jun | 25.3 °C | +1.5 °C | 329 mm | -65 mm |
| Jul | 25.6 °C | +2.3 °C | 408 mm | -58 mm |
| Aug | 24.7 °C | +0.6 °C | 268 mm | -126 mm |
| Sep | 25.9 °C | +1.5 °C | 255 mm | -21 mm |
| Oct | 24.1 °C | +1.4 °C | 184 mm | -9 mm |
| Nov | 20.5 °C | +0.6 °C | 119 mm | +49 mm |
| Dec | 19.2 °C | +1.7 °C | 1 mm | -31 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 Longshan?
Longshan has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 16.4 °C and it receives 2,270 mm of precipitation per year.
What is the hottest day ever recorded in Longshan?
The hottest day measured in Longshan between 1940 and 2025 was 20 May 2019, reaching 31.9 °C.
What is the coldest day in Longshan?
The coldest day measured in Longshan between 1940 and 2025 was 9 January 1980, at -3.4 °C.
Does it snow in Longshan?
Almost never: Longshan sees virtually no snow, with about 1 frost days per year.
Has the climate of Longshan warmed?
Yes: Longshan warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longshan?
The wettest day measured in Longshan between 1940 and 2025 was 18 August 2020, with 117 mm of rain in 24 hours.
What was the windiest day in Longshan?
The windiest day measured in Longshan between 1940 and 2025 was 9 February 1945, with winds reaching 22.6 km/h.
What is the warmest month in Longshan?
The warmest month in Longshan is June (20.2 °C on average); the coldest is January (10.2 °C).
How much does it rain in Longshan?
Longshan receives on average 2,270 mm of precipitation per year, spread over about 204 rainy days.
Is it sunny in Longshan?
Longshan gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longshan?
The heaviest 24-hour snowfall measured in Longshan between 1940 and 2025 was 3 March 1986, with 1.1 cm.
Are there tropical nights in Longshan?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Longshan.
What was the most extreme apparent temperature in Longshan?
In Longshan, between 1940 and 2025, the highest apparent temperature reached 36.5 °C on 29 August 2019, and the lowest was -6.8 °C on 9 January 1980.
Compare Longshan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longshan