Ashibetsu climate — normals and trends
Ashibetsu (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.6 °C and it receives 1,256 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 (20.1 °C on average) and the coldest is January (-9.0 °C). Rainfall peaks in August.
Ashibetsu averages 166 frost days, 1 hot days (≥ 30 °C) and 194 rainy days per year.
Ashibetsu has warmed by +2.3 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 178 to 154 per year over the period.
The hottest day of the period reached 32.5 °C (on 24 July 2025) and the coldest -26.9 °C (on 17 February 1978).
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
AshibetsuHokkaido
- coords
- 43.51°, 142.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.6°C
Average daily high
9.5°C
Average daily low
1.5°C
Annual rainfall
1,256mm
Sunshine / day
8.2h
Mean relative humidity
78%
Average peak wind
13.5km/h
Seasonal range
29.1°C
Frost days (< 0 °C)
166 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
194 d/yr
Annual snowfall
268.3 cm
Average feels-like high
7.3 °C
Average feels-like low
-1.0 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
12.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
32.5 °C
24 July 2025
Coldest day
-26.9 °C
17 February 1978
Wettest day
124 mm
23 August 1975
Windiest day
48.3 km/h
27 September 1954
Strongest gust
133.6 km/h
27 September 1954
Hottest feels-like
39.0 °C
25 July 2025
Coldest feels-like
-31.3 °C
17 February 1978
Snowiest day
30.3 cm
5 December 2004
Sunniest day
15.0 h
29 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 | -2.4 °C | +3.1 °C | 59 mm | -10 mm |
| Feb | -1.4 °C | +2.9 °C | 70 mm | +9 mm |
| Mar | 2.1 °C | +1.6 °C | 119 mm | +41 mm |
| Apr | 10.5 °C | +2.3 °C | 133 mm | +47 mm |
| May | 18.2 °C | +3.1 °C | 74 mm | -21 mm |
| Jun | 23.6 °C | +4.6 °C | 114 mm | +20 mm |
| Jul | 28.2 °C | +5.4 °C | 127 mm | -2 mm |
| Aug | 26.4 °C | +2.7 °C | 164 mm | -12 mm |
| Sep | 22.6 °C | +3.2 °C | 209 mm | +63 mm |
| Oct | 12.4 °C | -0.3 °C | 112 mm | -9 mm |
| Nov | 5.3 °C | +0.9 °C | 180 mm | +68 mm |
| Dec | -0.8 °C | +1.8 °C | 171 mm | +79 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 Ashibetsu?
Ashibetsu has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.6 °C and it receives 1,256 mm of precipitation per year.
What is the hottest day ever recorded in Ashibetsu?
The hottest day measured in Ashibetsu between 1940 and 2025 was 24 July 2025, reaching 32.5 °C.
What is the coldest day in Ashibetsu?
The coldest day measured in Ashibetsu between 1940 and 2025 was 17 February 1978, at -26.9 °C.
Does it snow in Ashibetsu?
Yes. Ashibetsu gets on average 268.3 cm of snow per year and has around 166 frost days.
Has the climate of Ashibetsu warmed?
Yes: Ashibetsu warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ashibetsu?
The wettest day measured in Ashibetsu between 1940 and 2025 was 23 August 1975, with 124 mm of rain in 24 hours.
What was the windiest day in Ashibetsu?
The windiest day measured in Ashibetsu between 1940 and 2025 was 27 September 1954, with winds reaching 48.3 km/h.
What is the warmest month in Ashibetsu?
The warmest month in Ashibetsu is August (20.1 °C on average); the coldest is January (-9.0 °C).
How much does it rain in Ashibetsu?
Ashibetsu receives on average 1,256 mm of precipitation per year, spread over about 194 rainy days.
Is it sunny in Ashibetsu?
Ashibetsu gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ashibetsu?
The heaviest 24-hour snowfall measured in Ashibetsu between 1940 and 2025 was 5 December 2004, with 30.3 cm.
Are there tropical nights in Ashibetsu?
Yes: Ashibetsu has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ashibetsu?
In Ashibetsu, between 1940 and 2025, the highest apparent temperature reached 39.0 °C on 25 July 2025, and the lowest was -31.3 °C on 17 February 1978.
Compare Ashibetsu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ashibetsu