Kamisu climate — normals and trends
Kamisu (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.7 °C and it receives 1,524 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 (25.1 °C on average) and the coldest is January (7.0 °C). Rainfall peaks in October.
Kamisu averages 0 frost days, 0 hot days (≥ 30 °C) and 144 rainy days per year.
Kamisu has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.6 °C (on 9 August 2016) and the coldest -1.0 °C (on 4 February 1984).
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
KamisuIbaraki
- coords
- 35.90°, 140.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.7°C
Average daily high
17.2°C
Average daily low
14.2°C
Annual rainfall
1,524mm
Sunshine / day
8.4h
Mean relative humidity
75%
Average peak wind
27.4km/h
Seasonal range
18.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
2.9 cm
Average feels-like high
16.6 °C
Average feels-like low
11.8 °C
Average peak gust
40.6 km/h
Tropical nights (≥ 20 °C)
94 d/yr
Solar radiation
14.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
32.6 °C
9 August 2016
Coldest day
-1.0 °C
4 February 1984
Wettest day
148 mm
17 September 1995
Windiest day
90.0 km/h
17 September 1995
Strongest gust
147.6 km/h
1 October 2018
Hottest feels-like
38.6 °C
1 August 2022
Coldest feels-like
-11.1 °C
25 January 2023
Snowiest day
10.4 cm
15 February 1951
Sunniest day
14.0 h
20 June 1962
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 | 10.4 °C | +1.5 °C | 60 mm | -14 mm |
| Feb | 9.7 °C | +0.7 °C | 18 mm | -67 mm |
| Mar | 13.3 °C | +1.9 °C | 177 mm | +51 mm |
| Apr | 16.5 °C | +1.4 °C | 123 mm | -5 mm |
| May | 19.3 °C | +0.9 °C | 232 mm | +90 mm |
| Jun | 23.7 °C | +2.7 °C | 142 mm | -22 mm |
| Jul | 27.2 °C | +2.9 °C | 55 mm | -72 mm |
| Aug | 28.5 °C | +2.2 °C | 47 mm | -51 mm |
| Sep | 26.8 °C | +2.6 °C | 110 mm | -61 mm |
| Oct | 21.2 °C | +1.1 °C | 168 mm | -42 mm |
| Nov | 16.3 °C | +0.2 °C | 78 mm | -42 mm |
| Dec | 12.9 °C | +1.3 °C | 110 mm | +30 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 Kamisu?
Kamisu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.7 °C and it receives 1,524 mm of precipitation per year.
What is the hottest day ever recorded in Kamisu?
The hottest day measured in Kamisu between 1940 and 2025 was 9 August 2016, reaching 32.6 °C.
What is the coldest day in Kamisu?
The coldest day measured in Kamisu between 1940 and 2025 was 4 February 1984, at -1.0 °C.
Does it snow in Kamisu?
Yes. Kamisu gets on average 2.9 cm of snow per year and has around 0 frost days.
Has the climate of Kamisu warmed?
Yes: Kamisu warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kamisu?
The wettest day measured in Kamisu between 1940 and 2025 was 17 September 1995, with 148 mm of rain in 24 hours.
What was the windiest day in Kamisu?
The windiest day measured in Kamisu between 1940 and 2025 was 17 September 1995, with winds reaching 90.0 km/h.
What is the warmest month in Kamisu?
The warmest month in Kamisu is August (25.1 °C on average); the coldest is January (7.0 °C).
How much does it rain in Kamisu?
Kamisu receives on average 1,524 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Kamisu?
Kamisu gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kamisu?
The heaviest 24-hour snowfall measured in Kamisu between 1940 and 2025 was 15 February 1951, with 10.4 cm.
Are there tropical nights in Kamisu?
Yes: Kamisu has on average 94 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kamisu?
In Kamisu, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 1 August 2022, and the lowest was -11.1 °C on 25 January 2023.
Compare Kamisu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kamisu