Date climate — normals and trends
Date (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.6 °C and it receives 1,027 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 (21.2 °C on average) and the coldest is January (-5.1 °C). Rainfall peaks in August.
Date averages 135 frost days, 0 hot days (≥ 30 °C) and 135 rainy days per year.
Date has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 116 per year over the period.
The hottest day of the period reached 31.8 °C (on 26 July 1976) and the coldest -18.8 °C (on 5 January 1963).
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
DateHokkaido
- coords
- 42.47°, 140.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.6°C
Average daily high
10.7°C
Average daily low
4.4°C
Annual rainfall
1,027mm
Sunshine / day
8.5h
Mean relative humidity
78%
Average peak wind
17.6km/h
Seasonal range
26.3°C
Frost days (< 0 °C)
135 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
135 d/yr
Annual snowfall
128.6 cm
Average feels-like high
8.6 °C
Average feels-like low
1.8 °C
Average peak gust
36.6 km/h
Tropical nights (≥ 20 °C)
15 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 = 0.63 · 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
31.8 °C
26 July 1976
Coldest day
-18.8 °C
5 January 1963
Wettest day
129 mm
11 September 2001
Windiest day
62.9 km/h
30 August 2016
Strongest gust
136.4 km/h
31 August 2016
Hottest feels-like
37.7 °C
10 August 1999
Coldest feels-like
-23.5 °C
27 January 1941
Snowiest day
36.7 cm
27 February 1972
Sunniest day
14.9 h
18 June 2023
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 | 0.8 °C | +2.7 °C | 42 mm | -6 mm |
| Feb | 1.3 °C | +2.5 °C | 41 mm | -2 mm |
| Mar | 4.7 °C | +2.2 °C | 70 mm | +11 mm |
| Apr | 10.4 °C | +1.8 °C | 95 mm | +17 mm |
| May | 16.4 °C | +2.3 °C | 63 mm | -23 mm |
| Jun | 22.6 °C | +4.5 °C | 112 mm | +32 mm |
| Jul | 26.9 °C | +4.9 °C | 91 mm | -31 mm |
| Aug | 27.0 °C | +3.0 °C | 159 mm | +13 mm |
| Sep | 23.6 °C | +2.9 °C | 255 mm | +117 mm |
| Oct | 15.1 °C | +0.8 °C | 56 mm | -38 mm |
| Nov | 8.8 °C | +2.2 °C | 116 mm | +40 mm |
| Dec | 2.8 °C | +2.2 °C | 94 mm | +36 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 Date?
Date has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.6 °C and it receives 1,027 mm of precipitation per year.
What is the hottest day ever recorded in Date?
The hottest day measured in Date between 1940 and 2025 was 26 July 1976, reaching 31.8 °C.
What is the coldest day in Date?
The coldest day measured in Date between 1940 and 2025 was 5 January 1963, at -18.8 °C.
Does it snow in Date?
Yes. Date gets on average 128.6 cm of snow per year and has around 135 frost days.
Has the climate of Date warmed?
Yes: Date warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Date?
The wettest day measured in Date between 1940 and 2025 was 11 September 2001, with 129 mm of rain in 24 hours.
What was the windiest day in Date?
The windiest day measured in Date between 1940 and 2025 was 30 August 2016, with winds reaching 62.9 km/h.
What is the warmest month in Date?
The warmest month in Date is August (21.2 °C on average); the coldest is January (-5.1 °C).
How much does it rain in Date?
Date receives on average 1,027 mm of precipitation per year, spread over about 135 rainy days.
Is it sunny in Date?
Date gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Date?
The heaviest 24-hour snowfall measured in Date between 1940 and 2025 was 27 February 1972, with 36.7 cm.
Are there tropical nights in Date?
Yes: Date has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Date?
In Date, between 1940 and 2025, the highest apparent temperature reached 37.7 °C on 10 August 1999, and the lowest was -23.5 °C on 27 January 1941.
Compare Date with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Date