Shizukuishi climate — normals and trends
Shizukuishi (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.9 °C and it receives 1,491 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 (21.5 °C on average) and the coldest is January (-4.9 °C). Rainfall peaks in July.
Shizukuishi averages 144 frost days, 2 hot days (≥ 30 °C) and 189 rainy days per year.
Shizukuishi has warmed by +2.5 °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 160 to 128 per year over the period.
The hottest day of the period reached 33.0 °C (on 14 August 2007) and the coldest -22.0 °C (on 7 January 1941).
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
ShizukuishiIwate
- coords
- 39.69°, 140.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.9°C
Average daily high
11.7°C
Average daily low
3.9°C
Annual rainfall
1,491mm
Sunshine / day
7.8h
Mean relative humidity
81%
Average peak wind
12.6km/h
Seasonal range
26.4°C
Frost days (< 0 °C)
144 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
189 d/yr
Annual snowfall
253.3 cm
Average feels-like high
10.1 °C
Average feels-like low
1.9 °C
Average peak gust
44.1 km/h
Tropical nights (≥ 20 °C)
15 d/yr
Solar radiation
13.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
33.0 °C
14 August 2007
Coldest day
-22.0 °C
7 January 1941
Wettest day
132 mm
23 July 1947
Windiest day
40.3 km/h
28 September 1991
Strongest gust
161.6 km/h
16 September 1961
Hottest feels-like
38.7 °C
23 August 2018
Coldest feels-like
-27.1 °C
7 January 1941
Snowiest day
49.4 cm
29 March 1966
Sunniest day
14.7 h
14 June 1989
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 | 0.4 °C | +2.0 °C | 89 mm | -1 mm |
| Feb | -0.1 °C | +0.6 °C | 66 mm | -18 mm |
| Mar | 4.6 °C | +1.4 °C | 110 mm | -2 mm |
| Apr | 10.6 °C | +0.8 °C | 140 mm | +30 mm |
| May | 17.5 °C | +1.1 °C | 124 mm | +14 mm |
| Jun | 24.2 °C | +4.2 °C | 122 mm | -5 mm |
| Jul | 28.9 °C | +5.3 °C | 59 mm | -122 mm |
| Aug | 27.8 °C | +2.6 °C | 130 mm | -35 mm |
| Sep | 23.4 °C | +2.7 °C | 212 mm | +38 mm |
| Oct | 15.1 °C | +0.5 °C | 110 mm | -15 mm |
| Nov | 8.1 °C | +0.4 °C | 145 mm | +36 mm |
| Dec | 2.2 °C | +1.0 °C | 139 mm | +31 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 Shizukuishi?
Shizukuishi has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.9 °C and it receives 1,491 mm of precipitation per year.
What is the hottest day ever recorded in Shizukuishi?
The hottest day measured in Shizukuishi between 1940 and 2025 was 14 August 2007, reaching 33.0 °C.
What is the coldest day in Shizukuishi?
The coldest day measured in Shizukuishi between 1940 and 2025 was 7 January 1941, at -22.0 °C.
Does it snow in Shizukuishi?
Yes. Shizukuishi gets on average 253.3 cm of snow per year and has around 144 frost days.
Has the climate of Shizukuishi warmed?
Yes: Shizukuishi warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Shizukuishi?
The wettest day measured in Shizukuishi between 1940 and 2025 was 23 July 1947, with 132 mm of rain in 24 hours.
What was the windiest day in Shizukuishi?
The windiest day measured in Shizukuishi between 1940 and 2025 was 28 September 1991, with winds reaching 40.3 km/h.
What is the warmest month in Shizukuishi?
The warmest month in Shizukuishi is August (21.5 °C on average); the coldest is January (-4.9 °C).
How much does it rain in Shizukuishi?
Shizukuishi receives on average 1,491 mm of precipitation per year, spread over about 189 rainy days.
Is it sunny in Shizukuishi?
Shizukuishi gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Shizukuishi?
The heaviest 24-hour snowfall measured in Shizukuishi between 1940 and 2025 was 29 March 1966, with 49.4 cm.
Are there tropical nights in Shizukuishi?
Yes: Shizukuishi has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Shizukuishi?
In Shizukuishi, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 23 August 2018, and the lowest was -27.1 °C on 7 January 1941.
Compare Shizukuishi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Shizukuishi