Shirakawa climate — normals and trends
Shirakawa (Japan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.4 °C and it receives 1,393 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 (23.7 °C on average) and the coldest is January (-0.1 °C). Rainfall peaks in July.
Shirakawa averages 99 frost days, 17 hot days (≥ 30 °C) and 151 rainy days per year.
Shirakawa 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 118 to 80 per year over the period.
The hottest day of the period reached 35.6 °C (on 11 August 2020) and the coldest -19.9 °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
ShirakawaFukushima
- coords
- 37.12°, 140.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.4°C
Average daily high
15.8°C
Average daily low
7.7°C
Annual rainfall
1,393mm
Sunshine / day
8.3h
Mean relative humidity
75%
Average peak wind
14.0km/h
Seasonal range
23.8°C
Frost days (< 0 °C)
99 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
64.7 cm
Average feels-like high
14.6 °C
Average feels-like low
6.1 °C
Average peak gust
39.7 km/h
Tropical nights (≥ 20 °C)
41 d/yr
Solar radiation
13.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.66 · 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
35.6 °C
11 August 2020
Coldest day
-19.9 °C
17 February 1967
Wettest day
167 mm
12 October 2019
Windiest day
45.1 km/h
25 September 1966
Strongest gust
170.3 km/h
27 September 1959
Hottest feels-like
41.3 °C
15 August 1994
Coldest feels-like
-24.0 °C
17 February 1967
Snowiest day
43.6 cm
24 December 1980
Sunniest day
14.1 h
24 June 1987
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 | 6.1 °C | +2.1 °C | 33 mm | -11 mm |
| Feb | 5.1 °C | +0.4 °C | 13 mm | -38 mm |
| Mar | 11.0 °C | +2.5 °C | 104 mm | +13 mm |
| Apr | 16.4 °C | +1.5 °C | 115 mm | +6 mm |
| May | 20.1 °C | +0.3 °C | 189 mm | +64 mm |
| Jun | 26.5 °C | +3.7 °C | 148 mm | -15 mm |
| Jul | 30.3 °C | +3.7 °C | 117 mm | -73 mm |
| Aug | 30.3 °C | +2.4 °C | 141 mm | -24 mm |
| Sep | 26.6 °C | +3.1 °C | 159 mm | -29 mm |
| Oct | 18.3 °C | +0.6 °C | 155 mm | +14 mm |
| Nov | 13.4 °C | +1.2 °C | 46 mm | -30 mm |
| Dec | 8.1 °C | +1.4 °C | 64 mm | +15 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 Shirakawa?
Shirakawa has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 1,393 mm of precipitation per year.
What is the hottest day ever recorded in Shirakawa?
The hottest day measured in Shirakawa between 1940 and 2025 was 11 August 2020, reaching 35.6 °C.
What is the coldest day in Shirakawa?
The coldest day measured in Shirakawa between 1940 and 2025 was 17 February 1967, at -19.9 °C.
Does it snow in Shirakawa?
Yes. Shirakawa gets on average 64.7 cm of snow per year and has around 99 frost days.
Has the climate of Shirakawa warmed?
Yes: Shirakawa warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Shirakawa?
The wettest day measured in Shirakawa between 1940 and 2025 was 12 October 2019, with 167 mm of rain in 24 hours.
What was the windiest day in Shirakawa?
The windiest day measured in Shirakawa between 1940 and 2025 was 25 September 1966, with winds reaching 45.1 km/h.
What is the warmest month in Shirakawa?
The warmest month in Shirakawa is August (23.7 °C on average); the coldest is January (-0.1 °C).
How much does it rain in Shirakawa?
Shirakawa receives on average 1,393 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Shirakawa?
Shirakawa 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 Shirakawa?
The heaviest 24-hour snowfall measured in Shirakawa between 1940 and 2025 was 24 December 1980, with 43.6 cm.
Are there tropical nights in Shirakawa?
Yes: Shirakawa has on average 41 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Shirakawa?
In Shirakawa, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 15 August 1994, and the lowest was -24.0 °C on 17 February 1967.
Compare Shirakawa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Shirakawa