Longkou climate — normals and trends
Longkou (China) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 12.4 °C and it receives 686 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 (25.2 °C on average) and the coldest is January (-0.7 °C). Rainfall peaks in July.
Longkou averages 59 frost days, 1 hot days (≥ 30 °C) and 73 rainy days per year.
Longkou has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 69 to 49 per year over the period.
The hottest day of the period reached 32.6 °C (on 5 July 2025) and the coldest -11.7 °C (on 23 January 2016).
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
LongkouShandong
- coords
- 37.65°, 120.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.4°C
Average daily high
14.1°C
Average daily low
11.0°C
Annual rainfall
686mm
Sunshine / day
9.3h
Mean relative humidity
73%
Average peak wind
26.9km/h
Seasonal range
25.9°C
Frost days (< 0 °C)
59 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
73 d/yr
Annual snowfall
22.8 cm
Average feels-like high
12.7 °C
Average feels-like low
7.9 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
92 d/yr
Solar radiation
15.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
32.6 °C
5 July 2025
Coldest day
-11.7 °C
23 January 2016
Wettest day
152 mm
14 August 1975
Windiest day
69.7 km/h
21 October 1952
Strongest gust
111.2 km/h
25 November 1951
Hottest feels-like
40.6 °C
3 August 2024
Coldest feels-like
-21.7 °C
15 January 1958
Snowiest day
16.5 cm
29 January 1979
Sunniest day
14.0 h
17 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 | 2.6 °C | +1.8 °C | 7 mm | -5 mm |
| Feb | 2.0 °C | +0.3 °C | 4 mm | -10 mm |
| Mar | 7.7 °C | +1.8 °C | 18 mm | -2 mm |
| Apr | 14.7 °C | +2.6 °C | 17 mm | -24 mm |
| May | 19.5 °C | +1.6 °C | 42 mm | -12 mm |
| Jun | 25.0 °C | +2.5 °C | 91 mm | +15 mm |
| Jul | 28.3 °C | +2.5 °C | 180 mm | +19 mm |
| Aug | 28.4 °C | +2.0 °C | 218 mm | +73 mm |
| Sep | 25.0 °C | +1.8 °C | 107 mm | +35 mm |
| Oct | 17.6 °C | -0.2 °C | 118 mm | +80 mm |
| Nov | 12.5 °C | +1.7 °C | 11 mm | -21 mm |
| Dec | 5.5 °C | +1.4 °C | 18 mm | -1 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 Longkou?
Longkou has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 12.4 °C and it receives 686 mm of precipitation per year.
What is the hottest day ever recorded in Longkou?
The hottest day measured in Longkou between 1940 and 2025 was 5 July 2025, reaching 32.6 °C.
What is the coldest day in Longkou?
The coldest day measured in Longkou between 1940 and 2025 was 23 January 2016, at -11.7 °C.
Does it snow in Longkou?
Yes. Longkou gets on average 22.8 cm of snow per year and has around 59 frost days.
Has the climate of Longkou warmed?
Yes: Longkou warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Longkou?
The wettest day measured in Longkou between 1940 and 2025 was 14 August 1975, with 152 mm of rain in 24 hours.
What was the windiest day in Longkou?
The windiest day measured in Longkou between 1940 and 2025 was 21 October 1952, with winds reaching 69.7 km/h.
What is the warmest month in Longkou?
The warmest month in Longkou is August (25.2 °C on average); the coldest is January (-0.7 °C).
How much does it rain in Longkou?
Longkou receives on average 686 mm of precipitation per year, spread over about 73 rainy days.
Is it sunny in Longkou?
Longkou gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Longkou?
The heaviest 24-hour snowfall measured in Longkou between 1940 and 2025 was 29 January 1979, with 16.5 cm.
Are there tropical nights in Longkou?
Yes: Longkou has on average 92 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Longkou?
In Longkou, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 3 August 2024, and the lowest was -21.7 °C on 15 January 1958.
Compare Longkou with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Longkou