Longju climate — normals and trends
Longju (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.0 °C and it receives 1,799 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 July (23.9 °C on average) and the coldest is January (3.2 °C). Rainfall peaks in July.
Longju averages 33 frost days, 21 hot days (≥ 30 °C) and 184 rainy days per year.
Longju has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The number of frost days there went from about 40 to 26 per year over the period.
The hottest day of the period reached 35.1 °C (on 3 August 2025) and the coldest -14.0 °C (on 20 December 1944).
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
LongjuChongqing Municipality
- coords
- 30.61°, 108.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.0°C
Average daily high
17.7°C
Average daily low
10.8°C
Annual rainfall
1,799mm
Sunshine / day
6.5h
Mean relative humidity
81%
Average peak wind
9.1km/h
Seasonal range
20.7°C
Frost days (< 0 °C)
33 d/yr
Hot days (≥ 30 °C)
21 d/yr
Rainy days (≥ 1 mm)
184 d/yr
Annual snowfall
26.5 cm
Average feels-like high
18.0 °C
Average feels-like low
10.3 °C
Average peak gust
28.7 km/h
Tropical nights (≥ 20 °C)
49 d/yr
Solar radiation
12.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.32 · 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
35.1 °C
3 August 2025
Coldest day
-14.0 °C
20 December 1944
Wettest day
206 mm
17 July 1982
Windiest day
51.0 km/h
28 May 1946
Strongest gust
105.5 km/h
28 May 1946
Hottest feels-like
40.7 °C
29 July 2010
Coldest feels-like
-18.5 °C
20 December 1944
Snowiest day
22.0 cm
22 February 1989
Sunniest day
13.8 h
19 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 | 8.4 °C | +2.0 °C | 56 mm | +6 mm |
| Feb | 7.9 °C | -0.5 °C | 37 mm | -26 mm |
| Mar | 13.6 °C | +0.3 °C | 143 mm | +25 mm |
| Apr | 20.9 °C | +2.5 °C | 143 mm | -26 mm |
| May | 24.1 °C | +2.1 °C | 105 mm | -108 mm |
| Jun | 25.8 °C | +0.8 °C | 238 mm | +4 mm |
| Jul | 31.2 °C | +3.2 °C | 93 mm | -164 mm |
| Aug | 30.1 °C | +2.0 °C | 273 mm | +61 mm |
| Sep | 25.6 °C | +1.8 °C | 240 mm | +52 mm |
| Oct | 20.3 °C | +2.0 °C | 228 mm | +87 mm |
| Nov | 13.7 °C | +0.5 °C | 56 mm | -41 mm |
| Dec | 10.6 °C | +2.6 °C | 65 mm | +9 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 Longju?
Longju has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.0 °C and it receives 1,799 mm of precipitation per year.
What is the hottest day ever recorded in Longju?
The hottest day measured in Longju between 1940 and 2025 was 3 August 2025, reaching 35.1 °C.
What is the coldest day in Longju?
The coldest day measured in Longju between 1940 and 2025 was 20 December 1944, at -14.0 °C.
Does it snow in Longju?
Yes. Longju gets on average 26.5 cm of snow per year and has around 33 frost days.
Has the climate of Longju warmed?
Yes: Longju warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longju?
The wettest day measured in Longju between 1940 and 2025 was 17 July 1982, with 206 mm of rain in 24 hours.
What was the windiest day in Longju?
The windiest day measured in Longju between 1940 and 2025 was 28 May 1946, with winds reaching 51.0 km/h.
What is the warmest month in Longju?
The warmest month in Longju is July (23.9 °C on average); the coldest is January (3.2 °C).
How much does it rain in Longju?
Longju receives on average 1,799 mm of precipitation per year, spread over about 184 rainy days.
Is it sunny in Longju?
Longju gets on average 6.5 hours of sunshine per day, roughly 2,373 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longju?
The heaviest 24-hour snowfall measured in Longju between 1940 and 2025 was 22 February 1989, with 22.0 cm.
Are there tropical nights in Longju?
Yes: Longju has on average 49 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Longju?
In Longju, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 29 July 2010, and the lowest was -18.5 °C on 20 December 1944.
Compare Longju with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longju