Ōfunato climate — normals and trends
Ōfunato (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.9 °C and it receives 1,387 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 (22.1 °C on average) and the coldest is February (0.8 °C). Rainfall peaks in September.
Ōfunato averages 63 frost days, 0 hot days (≥ 30 °C) and 139 rainy days per year.
Ōfunato has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 84 to 42 per year over the period.
The hottest day of the period reached 30.5 °C (on 15 August 2007) and the coldest -11.1 °C (on 9 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
ŌfunatoIwate
- coords
- 39.07°, 141.72°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.9°C
Average daily high
12.9°C
Average daily low
8.9°C
Annual rainfall
1,387mm
Sunshine / day
8.5h
Mean relative humidity
77%
Average peak wind
24.3km/h
Seasonal range
21.3°C
Frost days (< 0 °C)
63 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
53.0 cm
Average feels-like high
10.9 °C
Average feels-like low
5.9 °C
Average peak gust
41.7 km/h
Tropical nights (≥ 20 °C)
37 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
30.5 °C
15 August 2007
Coldest day
-11.1 °C
9 February 1942
Wettest day
212 mm
15 September 1947
Windiest day
76.8 km/h
10 October 1961
Strongest gust
145.4 km/h
23 August 1981
Hottest feels-like
36.2 °C
15 August 2007
Coldest feels-like
-17.4 °C
9 February 1942
Snowiest day
28.4 cm
3 February 1987
Sunniest day
14.7 h
13 June 1986
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 | 5.8 °C | +2.5 °C | 42 mm | -13 mm |
| Feb | 4.5 °C | +1.1 °C | 13 mm | -44 mm |
| Mar | 8.0 °C | +2.1 °C | 78 mm | -17 mm |
| Apr | 11.2 °C | +0.9 °C | 115 mm | +2 mm |
| May | 14.7 °C | +0.5 °C | 193 mm | +70 mm |
| Jun | 20.3 °C | +2.9 °C | 84 mm | -49 mm |
| Jul | 24.8 °C | +3.6 °C | 103 mm | -61 mm |
| Aug | 26.3 °C | +2.8 °C | 118 mm | -35 mm |
| Sep | 23.8 °C | +2.6 °C | 195 mm | -1 mm |
| Oct | 17.4 °C | +0.7 °C | 154 mm | +7 mm |
| Nov | 12.1 °C | +0.6 °C | 65 mm | -19 mm |
| Dec | 7.6 °C | +1.4 °C | 76 mm | +9 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 Ōfunato?
Ōfunato has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 10.9 °C and it receives 1,387 mm of precipitation per year.
What is the hottest day ever recorded in Ōfunato?
The hottest day measured in Ōfunato between 1940 and 2025 was 15 August 2007, reaching 30.5 °C.
What is the coldest day in Ōfunato?
The coldest day measured in Ōfunato between 1940 and 2025 was 9 February 1942, at -11.1 °C.
Does it snow in Ōfunato?
Yes. Ōfunato gets on average 53.0 cm of snow per year and has around 63 frost days.
Has the climate of Ōfunato warmed?
Yes: Ōfunato warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ōfunato?
The wettest day measured in Ōfunato between 1940 and 2025 was 15 September 1947, with 212 mm of rain in 24 hours.
What was the windiest day in Ōfunato?
The windiest day measured in Ōfunato between 1940 and 2025 was 10 October 1961, with winds reaching 76.8 km/h.
What is the warmest month in Ōfunato?
The warmest month in Ōfunato is August (22.1 °C on average); the coldest is February (0.8 °C).
How much does it rain in Ōfunato?
Ōfunato receives on average 1,387 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Ōfunato?
Ōfunato 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 Ōfunato?
The heaviest 24-hour snowfall measured in Ōfunato between 1940 and 2025 was 3 February 1987, with 28.4 cm.
Are there tropical nights in Ōfunato?
Yes: Ōfunato has on average 37 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ōfunato?
In Ōfunato, between 1940 and 2025, the highest apparent temperature reached 36.2 °C on 15 August 2007, and the lowest was -17.4 °C on 9 February 1942.
Compare Ōfunato with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ōfunato