Kutchan climate — normals and trends
Kutchan (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.9 °C and it receives 1,226 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 (20.0 °C on average) and the coldest is January (-7.5 °C). Rainfall peaks in August.
Kutchan averages 161 frost days, 0 hot days (≥ 30 °C) and 189 rainy days per year.
Kutchan 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 173 to 149 per year over the period.
The hottest day of the period reached 31.6 °C (on 23 August 2023) and the coldest -21.6 °C (on 20 January 1966).
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
KutchanHokkaido
- coords
- 42.90°, 140.74°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.9°C
Average daily high
9.5°C
Average daily low
2.3°C
Annual rainfall
1,226mm
Sunshine / day
8.8h
Mean relative humidity
80%
Average peak wind
13.0km/h
Seasonal range
27.5°C
Frost days (< 0 °C)
161 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
189 d/yr
Annual snowfall
277.0 cm
Average feels-like high
7.6 °C
Average feels-like low
-0.2 °C
Average peak gust
42.2 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.61 · 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
31.6 °C
23 August 2023
Coldest day
-21.6 °C
20 January 1966
Wettest day
132 mm
23 August 1975
Windiest day
47.0 km/h
8 September 2004
Strongest gust
153.0 km/h
8 September 2004
Hottest feels-like
37.3 °C
7 August 2021
Coldest feels-like
-26.1 °C
20 January 1966
Snowiest day
39.8 cm
27 February 1972
Sunniest day
15.0 h
15 June 1952
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 | -1.9 °C | +2.6 °C | 79 mm | +2 mm |
| Feb | -1.1 °C | +2.4 °C | 99 mm | +31 mm |
| Mar | 1.9 °C | +1.0 °C | 108 mm | +27 mm |
| Apr | 8.6 °C | +1.0 °C | 99 mm | +18 mm |
| May | 17.0 °C | +2.6 °C | 63 mm | -24 mm |
| Jun | 22.5 °C | +4.1 °C | 103 mm | +22 mm |
| Jul | 27.4 °C | +5.0 °C | 124 mm | +10 mm |
| Aug | 25.9 °C | +2.3 °C | 188 mm | +24 mm |
| Sep | 22.5 °C | +3.1 °C | 233 mm | +81 mm |
| Oct | 12.8 °C | +0.1 °C | 91 mm | -27 mm |
| Nov | 5.7 °C | +1.2 °C | 145 mm | +37 mm |
| Dec | -1.0 °C | +1.0 °C | 138 mm | +43 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 Kutchan?
Kutchan has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.9 °C and it receives 1,226 mm of precipitation per year.
What is the hottest day ever recorded in Kutchan?
The hottest day measured in Kutchan between 1940 and 2025 was 23 August 2023, reaching 31.6 °C.
What is the coldest day in Kutchan?
The coldest day measured in Kutchan between 1940 and 2025 was 20 January 1966, at -21.6 °C.
Does it snow in Kutchan?
Yes. Kutchan gets on average 277.0 cm of snow per year and has around 161 frost days.
Has the climate of Kutchan warmed?
Yes: Kutchan warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kutchan?
The wettest day measured in Kutchan between 1940 and 2025 was 23 August 1975, with 132 mm of rain in 24 hours.
What was the windiest day in Kutchan?
The windiest day measured in Kutchan between 1940 and 2025 was 8 September 2004, with winds reaching 47.0 km/h.
What is the warmest month in Kutchan?
The warmest month in Kutchan is August (20.0 °C on average); the coldest is January (-7.5 °C).
How much does it rain in Kutchan?
Kutchan receives on average 1,226 mm of precipitation per year, spread over about 189 rainy days.
Is it sunny in Kutchan?
Kutchan gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kutchan?
The heaviest 24-hour snowfall measured in Kutchan between 1940 and 2025 was 27 February 1972, with 39.8 cm.
Are there tropical nights in Kutchan?
Yes: Kutchan has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kutchan?
In Kutchan, between 1940 and 2025, the highest apparent temperature reached 37.3 °C on 7 August 2021, and the lowest was -26.1 °C on 20 January 1966.
Compare Kutchan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kutchan