Kushiro climate — normals and trends
Kushiro (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.6 °C and it receives 1,089 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 (18.3 °C on average) and the coldest is January (-5.0 °C). Rainfall peaks in September.
Kushiro averages 130 frost days, 0 hot days (≥ 30 °C) and 115 rainy days per year.
Kushiro has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 141 to 119 per year over the period.
The hottest day of the period reached 28.3 °C (on 23 July 2025) and the coldest -19.4 °C (on 9 February 2019).
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
KushiroHokkaido
- coords
- 42.98°, 144.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.6°C
Average daily high
9.1°C
Average daily low
3.9°C
Annual rainfall
1,089mm
Sunshine / day
8.2h
Mean relative humidity
78%
Average peak wind
21.7km/h
Seasonal range
23.3°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
120.9 cm
Average feels-like high
6.3 °C
Average feels-like low
0.5 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
13.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
28.3 °C
23 July 2025
Coldest day
-19.4 °C
9 February 2019
Wettest day
149 mm
11 September 1992
Windiest day
67.1 km/h
10 November 1990
Strongest gust
130.0 km/h
10 November 1990
Hottest feels-like
33.1 °C
25 August 2023
Coldest feels-like
-24.5 °C
9 February 2019
Snowiest day
47.0 cm
17 January 1975
Sunniest day
15.0 h
16 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 | 0.5 °C | +2.4 °C | 29 mm | -21 mm |
| Feb | 0.7 °C | +2.3 °C | 45 mm | +4 mm |
| Mar | 3.5 °C | +1.7 °C | 68 mm | -2 mm |
| Apr | 8.1 °C | +1.1 °C | 141 mm | +52 mm |
| May | 12.3 °C | +1.6 °C | 108 mm | +6 mm |
| Jun | 17.6 °C | +4.0 °C | 94 mm | +4 mm |
| Jul | 22.4 °C | +4.8 °C | 81 mm | -25 mm |
| Aug | 23.5 °C | +3.4 °C | 98 mm | -39 mm |
| Sep | 21.4 °C | +3.0 °C | 170 mm | +17 mm |
| Oct | 13.9 °C | 0.0 °C | 73 mm | -37 mm |
| Nov | 8.3 °C | +0.6 °C | 125 mm | +46 mm |
| Dec | 3.0 °C | +1.5 °C | 128 mm | +66 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 Kushiro?
Kushiro has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.6 °C and it receives 1,089 mm of precipitation per year.
What is the hottest day ever recorded in Kushiro?
The hottest day measured in Kushiro between 1940 and 2025 was 23 July 2025, reaching 28.3 °C.
What is the coldest day in Kushiro?
The coldest day measured in Kushiro between 1940 and 2025 was 9 February 2019, at -19.4 °C.
Does it snow in Kushiro?
Yes. Kushiro gets on average 120.9 cm of snow per year and has around 130 frost days.
Has the climate of Kushiro warmed?
Yes: Kushiro warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kushiro?
The wettest day measured in Kushiro between 1940 and 2025 was 11 September 1992, with 149 mm of rain in 24 hours.
What was the windiest day in Kushiro?
The windiest day measured in Kushiro between 1940 and 2025 was 10 November 1990, with winds reaching 67.1 km/h.
What is the warmest month in Kushiro?
The warmest month in Kushiro is August (18.3 °C on average); the coldest is January (-5.0 °C).
How much does it rain in Kushiro?
Kushiro receives on average 1,089 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Kushiro?
Kushiro 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 Kushiro?
The heaviest 24-hour snowfall measured in Kushiro between 1940 and 2025 was 17 January 1975, with 47.0 cm.
Are there tropical nights in Kushiro?
Yes: Kushiro has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kushiro?
In Kushiro, between 1940 and 2025, the highest apparent temperature reached 33.1 °C on 25 August 2023, and the lowest was -24.5 °C on 9 February 2019.
Compare Kushiro with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kushiro