Longgu climate — normals and trends
Longgu (China) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 14.6 °C and it receives 898 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 (27.3 °C on average) and the coldest is January (-0.2 °C). Rainfall peaks in July.
Longgu averages 76 frost days, 62 hot days (≥ 30 °C) and 81 rainy days per year.
Longgu has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 88 to 64 per year over the period.
The hottest day of the period reached 40.8 °C (on 3 July 1941) and the coldest -24.2 °C (on 11 January 1955).
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
LongguJiangsu
- coords
- 34.90°, 116.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.6°C
Average daily high
19.1°C
Average daily low
10.6°C
Annual rainfall
898mm
Sunshine / day
8.7h
Mean relative humidity
70%
Average peak wind
15.0km/h
Seasonal range
27.5°C
Frost days (< 0 °C)
76 d/yr
Hot days (≥ 30 °C)
62 d/yr
Rainy days (≥ 1 mm)
81 d/yr
Annual snowfall
13.0 cm
Average feels-like high
18.7 °C
Average feels-like low
9.5 °C
Average peak gust
30.0 km/h
Tropical nights (≥ 20 °C)
92 d/yr
Solar radiation
15.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.26 · 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
40.8 °C
3 July 1941
Coldest day
-24.2 °C
11 January 1955
Wettest day
240 mm
11 July 1978
Windiest day
45.5 km/h
17 April 1946
Strongest gust
87.1 km/h
25 June 1971
Hottest feels-like
45.5 °C
11 August 1946
Coldest feels-like
-29.7 °C
11 January 1955
Snowiest day
14.4 cm
7 February 1964
Sunniest day
14.0 h
10 June 1950
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 | 7.7 °C | +3.2 °C | 5 mm | -9 mm |
| Feb | 8.3 °C | +1.0 °C | 4 mm | -16 mm |
| Mar | 15.9 °C | +2.5 °C | 51 mm | +19 mm |
| Apr | 23.9 °C | +3.6 °C | 28 mm | -26 mm |
| May | 27.3 °C | +1.5 °C | 27 mm | -36 mm |
| Jun | 31.9 °C | +1.6 °C | 145 mm | +42 mm |
| Jul | 34.3 °C | +3.5 °C | 41 mm | -221 mm |
| Aug | 32.7 °C | +2.6 °C | 121 mm | -55 mm |
| Sep | 25.6 °C | -0.4 °C | 209 mm | +116 mm |
| Oct | 18.6 °C | -2.1 °C | 131 mm | +90 mm |
| Nov | 16.3 °C | +2.9 °C | 9 mm | -20 mm |
| Dec | 9.3 °C | +2.7 °C | 11 mm | -2 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 Longgu?
Longgu has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 14.6 °C and it receives 898 mm of precipitation per year.
What is the hottest day ever recorded in Longgu?
The hottest day measured in Longgu between 1940 and 2025 was 3 July 1941, reaching 40.8 °C.
What is the coldest day in Longgu?
The coldest day measured in Longgu between 1940 and 2025 was 11 January 1955, at -24.2 °C.
Does it snow in Longgu?
Yes. Longgu gets on average 13.0 cm of snow per year and has around 76 frost days.
Has the climate of Longgu warmed?
Yes: Longgu warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longgu?
The wettest day measured in Longgu between 1940 and 2025 was 11 July 1978, with 240 mm of rain in 24 hours.
What was the windiest day in Longgu?
The windiest day measured in Longgu between 1940 and 2025 was 17 April 1946, with winds reaching 45.5 km/h.
What is the warmest month in Longgu?
The warmest month in Longgu is July (27.3 °C on average); the coldest is January (-0.2 °C).
How much does it rain in Longgu?
Longgu receives on average 898 mm of precipitation per year, spread over about 81 rainy days.
Is it sunny in Longgu?
Longgu 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 Longgu?
The heaviest 24-hour snowfall measured in Longgu between 1940 and 2025 was 7 February 1964, with 14.4 cm.
Are there tropical nights in Longgu?
Yes: Longgu has on average 92 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Longgu?
In Longgu, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 11 August 1946, and the lowest was -29.7 °C on 11 January 1955.
Compare Longgu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longgu