Kanuma climate — normals and trends
Kanuma (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.3 °C and it receives 1,809 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 (25.2 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in July.
Kanuma averages 73 frost days, 26 hot days (≥ 30 °C) and 169 rainy days per year.
Kanuma has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 97 to 49 per year over the period.
The hottest day of the period reached 36.6 °C (on 24 July 1987) and the coldest -16.8 °C (on 22 February 1968).
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
KanumaTochigi
- coords
- 36.55°, 139.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.3°C
Average daily high
17.7°C
Average daily low
9.4°C
Annual rainfall
1,809mm
Sunshine / day
8.2h
Mean relative humidity
74%
Average peak wind
11.8km/h
Seasonal range
23.3°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
26 d/yr
Rainy days (≥ 1 mm)
169 d/yr
Annual snowfall
30.4 cm
Average feels-like high
17.4 °C
Average feels-like low
8.5 °C
Average peak gust
27.1 km/h
Tropical nights (≥ 20 °C)
60 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
36.6 °C
24 July 1987
Coldest day
-16.8 °C
22 February 1968
Wettest day
181 mm
12 October 2019
Windiest day
57.2 km/h
16 September 1961
Strongest gust
151.9 km/h
27 September 1959
Hottest feels-like
44.2 °C
10 August 2013
Coldest feels-like
-21.5 °C
16 February 1967
Snowiest day
27.1 cm
12 March 1969
Sunniest day
14.0 h
13 June 2008
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 | 8.8 °C | +2.1 °C | 37 mm | -8 mm |
| Feb | 8.3 °C | +0.8 °C | 6 mm | -49 mm |
| Mar | 13.6 °C | +2.4 °C | 143 mm | +37 mm |
| Apr | 18.4 °C | +1.5 °C | 135 mm | -0 mm |
| May | 21.6 °C | +0.2 °C | 239 mm | +67 mm |
| Jun | 27.6 °C | +3.6 °C | 190 mm | -36 mm |
| Jul | 31.4 °C | +3.8 °C | 151 mm | -111 mm |
| Aug | 32.2 °C | +3.2 °C | 122 mm | -112 mm |
| Sep | 28.5 °C | +3.5 °C | 185 mm | -68 mm |
| Oct | 20.3 °C | +0.8 °C | 155 mm | -27 mm |
| Nov | 15.6 °C | +1.3 °C | 31 mm | -60 mm |
| Dec | 10.1 °C | +0.9 °C | 65 mm | +14 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 Kanuma?
Kanuma has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.3 °C and it receives 1,809 mm of precipitation per year.
What is the hottest day ever recorded in Kanuma?
The hottest day measured in Kanuma between 1940 and 2025 was 24 July 1987, reaching 36.6 °C.
What is the coldest day in Kanuma?
The coldest day measured in Kanuma between 1940 and 2025 was 22 February 1968, at -16.8 °C.
Does it snow in Kanuma?
Yes. Kanuma gets on average 30.4 cm of snow per year and has around 73 frost days.
Has the climate of Kanuma warmed?
Yes: Kanuma warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kanuma?
The wettest day measured in Kanuma between 1940 and 2025 was 12 October 2019, with 181 mm of rain in 24 hours.
What was the windiest day in Kanuma?
The windiest day measured in Kanuma between 1940 and 2025 was 16 September 1961, with winds reaching 57.2 km/h.
What is the warmest month in Kanuma?
The warmest month in Kanuma is August (25.2 °C on average); the coldest is January (1.9 °C).
How much does it rain in Kanuma?
Kanuma receives on average 1,809 mm of precipitation per year, spread over about 169 rainy days.
Is it sunny in Kanuma?
Kanuma 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 Kanuma?
The heaviest 24-hour snowfall measured in Kanuma between 1940 and 2025 was 12 March 1969, with 27.1 cm.
Are there tropical nights in Kanuma?
Yes: Kanuma has on average 60 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kanuma?
In Kanuma, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 10 August 2013, and the lowest was -21.5 °C on 16 February 1967.
Compare Kanuma with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kanuma