Miharu climate — normals and trends
Miharu (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 1,185 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 (23.5 °C on average) and the coldest is January (-1.2 °C). Rainfall peaks in July.
Miharu averages 106 frost days, 15 hot days (≥ 30 °C) and 143 rainy days per year.
Miharu has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 124 to 88 per year over the period.
The hottest day of the period reached 35.3 °C (on 2 September 2025) and the coldest -20.6 °C (on 11 February 1942).
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
MiharuFukushima
- coords
- 37.43°, 140.48°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.9°C
Average daily high
15.0°C
Average daily low
7.1°C
Annual rainfall
1,185mm
Sunshine / day
8.2h
Mean relative humidity
76%
Average peak wind
15.6km/h
Seasonal range
24.7°C
Frost days (< 0 °C)
106 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
88.8 cm
Average feels-like high
13.5 °C
Average feels-like low
5.4 °C
Average peak gust
41.6 km/h
Tropical nights (≥ 20 °C)
37 d/yr
Solar radiation
13.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
35.3 °C
2 September 2025
Coldest day
-20.6 °C
11 February 1942
Wettest day
174 mm
12 October 2019
Windiest day
48.4 km/h
31 January 1970
Strongest gust
140.8 km/h
27 September 1959
Hottest feels-like
41.3 °C
7 August 2019
Coldest feels-like
-25.7 °C
11 February 1942
Snowiest day
61.6 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 | 4.0 °C | +1.4 °C | 39 mm | -8 mm |
| Feb | 3.0 °C | -0.3 °C | 25 mm | -26 mm |
| Mar | 9.8 °C | +2.4 °C | 82 mm | +2 mm |
| Apr | 15.7 °C | +1.6 °C | 92 mm | +3 mm |
| May | 19.8 °C | +0.5 °C | 170 mm | +74 mm |
| Jun | 26.7 °C | +4.3 °C | 108 mm | -19 mm |
| Jul | 30.6 °C | +4.5 °C | 50 mm | -114 mm |
| Aug | 30.2 °C | +2.8 °C | 135 mm | -2 mm |
| Sep | 26.5 °C | +3.5 °C | 109 mm | -49 mm |
| Oct | 18.0 °C | +0.9 °C | 146 mm | +25 mm |
| Nov | 12.6 °C | +1.2 °C | 42 mm | -23 mm |
| Dec | 7.5 °C | +2.0 °C | 62 mm | +12 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 Miharu?
Miharu has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.9 °C and it receives 1,185 mm of precipitation per year.
What is the hottest day ever recorded in Miharu?
The hottest day measured in Miharu between 1940 and 2025 was 2 September 2025, reaching 35.3 °C.
What is the coldest day in Miharu?
The coldest day measured in Miharu between 1940 and 2025 was 11 February 1942, at -20.6 °C.
Does it snow in Miharu?
Yes. Miharu gets on average 88.8 cm of snow per year and has around 106 frost days.
Has the climate of Miharu warmed?
Yes: Miharu warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Miharu?
The wettest day measured in Miharu between 1940 and 2025 was 12 October 2019, with 174 mm of rain in 24 hours.
What was the windiest day in Miharu?
The windiest day measured in Miharu between 1940 and 2025 was 31 January 1970, with winds reaching 48.4 km/h.
What is the warmest month in Miharu?
The warmest month in Miharu is August (23.5 °C on average); the coldest is January (-1.2 °C).
How much does it rain in Miharu?
Miharu receives on average 1,185 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Miharu?
Miharu gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Miharu?
The heaviest 24-hour snowfall measured in Miharu between 1940 and 2025 was 24 December 1980, with 61.6 cm.
Are there tropical nights in Miharu?
Yes: Miharu has on average 37 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Miharu?
In Miharu, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 7 August 2019, and the lowest was -25.7 °C on 11 February 1942.
Compare Miharu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Miharu