Asahikawa climate — normals and trends
Asahikawa (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.1 °C and it receives 1,224 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 (20.6 °C on average) and the coldest is January (-8.6 °C). Rainfall peaks in August.
Asahikawa averages 162 frost days, 1 hot days (≥ 30 °C) and 189 rainy days per year.
Asahikawa has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 175 to 149 per year over the period.
The hottest day of the period reached 32.9 °C (on 24 July 2025) and the coldest -27.5 °C (on 25 January 1985).
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
AsahikawaHokkaido
- coords
- 43.77°, 142.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.1°C
Average daily high
10.3°C
Average daily low
1.8°C
Annual rainfall
1,224mm
Sunshine / day
8.1h
Mean relative humidity
77%
Average peak wind
13.9km/h
Seasonal range
29.2°C
Frost days (< 0 °C)
162 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
189 d/yr
Annual snowfall
235.4 cm
Average feels-like high
8.1 °C
Average feels-like low
-0.7 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
9 d/yr
Solar radiation
12.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
32.9 °C
24 July 2025
Coldest day
-27.5 °C
25 January 1985
Wettest day
169 mm
23 August 1975
Windiest day
52.3 km/h
27 September 1954
Strongest gust
133.9 km/h
27 September 1954
Hottest feels-like
39.2 °C
25 July 2025
Coldest feels-like
-32.1 °C
25 January 1985
Snowiest day
28.4 cm
5 December 2004
Sunniest day
15.0 h
18 June 1941
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 | -1.8 °C | +2.9 °C | 47 mm | -14 mm |
| Feb | -0.5 °C | +2.9 °C | 60 mm | +5 mm |
| Mar | 3.3 °C | +1.9 °C | 99 mm | +29 mm |
| Apr | 11.2 °C | +1.9 °C | 118 mm | +36 mm |
| May | 19.1 °C | +3.0 °C | 76 mm | -19 mm |
| Jun | 24.2 °C | +4.3 °C | 120 mm | +24 mm |
| Jul | 28.9 °C | +5.3 °C | 110 mm | -24 mm |
| Aug | 27.0 °C | +2.6 °C | 166 mm | -15 mm |
| Sep | 23.2 °C | +3.1 °C | 200 mm | +57 mm |
| Oct | 13.2 °C | -0.2 °C | 113 mm | -5 mm |
| Nov | 6.0 °C | +0.9 °C | 166 mm | +60 mm |
| Dec | 0.1 °C | +1.9 °C | 151 mm | +67 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 Asahikawa?
Asahikawa has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.1 °C and it receives 1,224 mm of precipitation per year.
What is the hottest day ever recorded in Asahikawa?
The hottest day measured in Asahikawa between 1940 and 2025 was 24 July 2025, reaching 32.9 °C.
What is the coldest day in Asahikawa?
The coldest day measured in Asahikawa between 1940 and 2025 was 25 January 1985, at -27.5 °C.
Does it snow in Asahikawa?
Yes. Asahikawa gets on average 235.4 cm of snow per year and has around 162 frost days.
Has the climate of Asahikawa warmed?
Yes: Asahikawa warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Asahikawa?
The wettest day measured in Asahikawa between 1940 and 2025 was 23 August 1975, with 169 mm of rain in 24 hours.
What was the windiest day in Asahikawa?
The windiest day measured in Asahikawa between 1940 and 2025 was 27 September 1954, with winds reaching 52.3 km/h.
What is the warmest month in Asahikawa?
The warmest month in Asahikawa is August (20.6 °C on average); the coldest is January (-8.6 °C).
How much does it rain in Asahikawa?
Asahikawa receives on average 1,224 mm of precipitation per year, spread over about 189 rainy days.
Is it sunny in Asahikawa?
Asahikawa 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 Asahikawa?
The heaviest 24-hour snowfall measured in Asahikawa between 1940 and 2025 was 5 December 2004, with 28.4 cm.
Are there tropical nights in Asahikawa?
Yes: Asahikawa has on average 9 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Asahikawa?
In Asahikawa, between 1940 and 2025, the highest apparent temperature reached 39.2 °C on 25 July 2025, and the lowest was -32.1 °C on 25 January 1985.
Compare Asahikawa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Asahikawa