Kuroishi climate — normals and trends
Kuroishi (Japan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 1,316 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 (23.0 °C on average) and the coldest is January (-2.6 °C). Rainfall peaks in August.
Kuroishi averages 119 frost days, 6 hot days (≥ 30 °C) and 187 rainy days per year.
Kuroishi has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 138 to 101 per year over the period.
The hottest day of the period reached 36.7 °C (on 10 August 2023) and the coldest -16.7 °C (on 7 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
KuroishiAomori
- coords
- 40.65°, 140.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
13.1°C
Average daily low
6.1°C
Annual rainfall
1,316mm
Sunshine / day
8.3h
Mean relative humidity
78%
Average peak wind
15.6km/h
Seasonal range
25.6°C
Frost days (< 0 °C)
119 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
187 d/yr
Annual snowfall
203.3 cm
Average feels-like high
11.6 °C
Average feels-like low
4.0 °C
Average peak gust
41.1 km/h
Tropical nights (≥ 20 °C)
28 d/yr
Solar radiation
13.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
36.7 °C
10 August 2023
Coldest day
-16.7 °C
7 January 1985
Wettest day
156 mm
3 August 2022
Windiest day
49.5 km/h
26 September 1954
Strongest gust
135.0 km/h
28 September 1991
Hottest feels-like
42.4 °C
23 August 2023
Coldest feels-like
-21.2 °C
7 January 1985
Snowiest day
38.8 cm
29 March 1966
Sunniest day
14.8 h
21 June 1958
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 | 2.0 °C | +2.2 °C | 94 mm | +10 mm |
| Feb | 1.7 °C | +1.3 °C | 80 mm | +5 mm |
| Mar | 5.8 °C | +1.4 °C | 116 mm | +25 mm |
| Apr | 12.8 °C | +0.9 °C | 132 mm | +42 mm |
| May | 18.6 °C | +0.9 °C | 82 mm | -9 mm |
| Jun | 24.8 °C | +3.4 °C | 66 mm | -34 mm |
| Jul | 30.2 °C | +5.2 °C | 63 mm | -83 mm |
| Aug | 28.9 °C | +2.3 °C | 184 mm | +20 mm |
| Sep | 25.1 °C | +2.7 °C | 160 mm | +5 mm |
| Oct | 16.7 °C | +0.6 °C | 85 mm | -29 mm |
| Nov | 10.2 °C | +1.2 °C | 172 mm | +70 mm |
| Dec | 4.4 °C | +1.8 °C | 174 mm | +71 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 Kuroishi?
Kuroishi has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 1,316 mm of precipitation per year.
What is the hottest day ever recorded in Kuroishi?
The hottest day measured in Kuroishi between 1940 and 2025 was 10 August 2023, reaching 36.7 °C.
What is the coldest day in Kuroishi?
The coldest day measured in Kuroishi between 1940 and 2025 was 7 January 1985, at -16.7 °C.
Does it snow in Kuroishi?
Yes. Kuroishi gets on average 203.3 cm of snow per year and has around 119 frost days.
Has the climate of Kuroishi warmed?
Yes: Kuroishi warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kuroishi?
The wettest day measured in Kuroishi between 1940 and 2025 was 3 August 2022, with 156 mm of rain in 24 hours.
What was the windiest day in Kuroishi?
The windiest day measured in Kuroishi between 1940 and 2025 was 26 September 1954, with winds reaching 49.5 km/h.
What is the warmest month in Kuroishi?
The warmest month in Kuroishi is August (23.0 °C on average); the coldest is January (-2.6 °C).
How much does it rain in Kuroishi?
Kuroishi receives on average 1,316 mm of precipitation per year, spread over about 187 rainy days.
Is it sunny in Kuroishi?
Kuroishi gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kuroishi?
The heaviest 24-hour snowfall measured in Kuroishi between 1940 and 2025 was 29 March 1966, with 38.8 cm.
Are there tropical nights in Kuroishi?
Yes: Kuroishi has on average 28 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kuroishi?
In Kuroishi, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 23 August 2023, and the lowest was -21.2 °C on 7 January 1985.
Compare Kuroishi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kuroishi