Sukagawa climate — normals and trends
Sukagawa (Japan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.9 °C and it receives 1,297 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 (23.4 °C on average) and the coldest is January (-0.9 °C). Rainfall peaks in September.
Sukagawa averages 106 frost days, 15 hot days (≥ 30 °C) and 142 rainy days per year.
Sukagawa 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 123 to 89 per year over the period.
The hottest day of the period reached 35.5 °C (on 5 August 2015) and the coldest -20.4 °C (on 17 February 1967).
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
SukagawaFukushima
- coords
- 37.28°, 140.38°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.9°C
Average daily high
15.2°C
Average daily low
7.2°C
Annual rainfall
1,297mm
Sunshine / day
8.4h
Mean relative humidity
76%
Average peak wind
16.5km/h
Seasonal range
24.3°C
Frost days (< 0 °C)
106 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
142 d/yr
Annual snowfall
75.1 cm
Average feels-like high
13.7 °C
Average feels-like low
5.3 °C
Average peak gust
41.2 km/h
Tropical nights (≥ 20 °C)
36 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.66 · 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
35.5 °C
5 August 2015
Coldest day
-20.4 °C
17 February 1967
Wettest day
166 mm
12 October 2019
Windiest day
50.0 km/h
31 January 1970
Strongest gust
149.4 km/h
27 September 1959
Hottest feels-like
41.4 °C
31 July 1962
Coldest feels-like
-24.9 °C
17 February 1967
Snowiest day
56.9 cm
24 December 1980
Sunniest day
14.2 h
16 June 1982
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 | 5.2 °C | +2.1 °C | 35 mm | -8 mm |
| Feb | 4.1 °C | +0.3 °C | 11 mm | -39 mm |
| Mar | 10.6 °C | +2.8 °C | 90 mm | +5 mm |
| Apr | 16.1 °C | +1.7 °C | 100 mm | +2 mm |
| May | 19.8 °C | +0.4 °C | 183 mm | +72 mm |
| Jun | 26.4 °C | +3.9 °C | 129 mm | -18 mm |
| Jul | 30.4 °C | +4.1 °C | 72 mm | -105 mm |
| Aug | 30.3 °C | +2.7 °C | 153 mm | +1 mm |
| Sep | 26.6 °C | +3.4 °C | 146 mm | -32 mm |
| Oct | 18.0 °C | +0.8 °C | 151 mm | +16 mm |
| Nov | 12.8 °C | +1.2 °C | 42 mm | -30 mm |
| Dec | 7.8 °C | +1.9 °C | 66 mm | +17 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 Sukagawa?
Sukagawa has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.9 °C and it receives 1,297 mm of precipitation per year.
What is the hottest day ever recorded in Sukagawa?
The hottest day measured in Sukagawa between 1940 and 2025 was 5 August 2015, reaching 35.5 °C.
What is the coldest day in Sukagawa?
The coldest day measured in Sukagawa between 1940 and 2025 was 17 February 1967, at -20.4 °C.
Does it snow in Sukagawa?
Yes. Sukagawa gets on average 75.1 cm of snow per year and has around 106 frost days.
Has the climate of Sukagawa warmed?
Yes: Sukagawa warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sukagawa?
The wettest day measured in Sukagawa between 1940 and 2025 was 12 October 2019, with 166 mm of rain in 24 hours.
What was the windiest day in Sukagawa?
The windiest day measured in Sukagawa between 1940 and 2025 was 31 January 1970, with winds reaching 50.0 km/h.
What is the warmest month in Sukagawa?
The warmest month in Sukagawa is August (23.4 °C on average); the coldest is January (-0.9 °C).
How much does it rain in Sukagawa?
Sukagawa receives on average 1,297 mm of precipitation per year, spread over about 142 rainy days.
Is it sunny in Sukagawa?
Sukagawa 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 Sukagawa?
The heaviest 24-hour snowfall measured in Sukagawa between 1940 and 2025 was 24 December 1980, with 56.9 cm.
Are there tropical nights in Sukagawa?
Yes: Sukagawa has on average 36 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sukagawa?
In Sukagawa, between 1940 and 2025, the highest apparent temperature reached 41.4 °C on 31 July 1962, and the lowest was -24.9 °C on 17 February 1967.
Compare Sukagawa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sukagawa