Tōon climate — normals and trends
Tōon (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 1,912 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 (25.3 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in June.
Tōon averages 64 frost days, 27 hot days (≥ 30 °C) and 166 rainy days per year.
Tōon has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 87 to 41 per year over the period.
The hottest day of the period reached 34.9 °C (on 31 July 1958) and the coldest -14.6 °C (on 19 February 1977).
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
TōonEhime
- coords
- 33.79°, 132.89°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
17.9°C
Average daily low
9.8°C
Annual rainfall
1,912mm
Sunshine / day
8.9h
Mean relative humidity
78%
Average peak wind
10.9km/h
Seasonal range
23.4°C
Frost days (< 0 °C)
64 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
166 d/yr
Annual snowfall
38.2 cm
Average feels-like high
17.7 °C
Average feels-like low
9.0 °C
Average peak gust
39.1 km/h
Tropical nights (≥ 20 °C)
70 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.73 · 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
34.9 °C
31 July 1958
Coldest day
-14.6 °C
19 February 1977
Wettest day
190 mm
29 September 2004
Windiest day
46.5 km/h
7 September 2004
Strongest gust
198.7 km/h
7 September 2004
Hottest feels-like
40.9 °C
3 August 2024
Coldest feels-like
-18.7 °C
19 February 1977
Snowiest day
34.0 cm
15 February 1968
Sunniest day
14.0 h
3 June 1940
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 | +0.2 °C | 45 mm | -24 mm |
| Feb | 5.2 °C | -1.7 °C | 56 mm | -30 mm |
| Mar | 12.9 °C | +1.6 °C | 118 mm | -2 mm |
| Apr | 18.3 °C | +1.0 °C | 103 mm | -47 mm |
| May | 21.7 °C | +0.2 °C | 270 mm | +93 mm |
| Jun | 26.8 °C | +2.2 °C | 355 mm | +66 mm |
| Jul | 31.3 °C | +2.9 °C | 78 mm | -194 mm |
| Aug | 31.1 °C | +1.8 °C | 194 mm | -11 mm |
| Sep | 28.3 °C | +2.6 °C | 220 mm | -17 mm |
| Oct | 22.7 °C | +2.5 °C | 219 mm | +74 mm |
| Nov | 15.5 °C | +0.9 °C | 44 mm | -49 mm |
| Dec | 10.5 °C | +1.8 °C | 42 mm | -29 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 Tōon?
Tōon has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 1,912 mm of precipitation per year.
What is the hottest day ever recorded in Tōon?
The hottest day measured in Tōon between 1940 and 2025 was 31 July 1958, reaching 34.9 °C.
What is the coldest day in Tōon?
The coldest day measured in Tōon between 1940 and 2025 was 19 February 1977, at -14.6 °C.
Does it snow in Tōon?
Yes. Tōon gets on average 38.2 cm of snow per year and has around 64 frost days.
Has the climate of Tōon warmed?
Yes: Tōon warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tōon?
The wettest day measured in Tōon between 1940 and 2025 was 29 September 2004, with 190 mm of rain in 24 hours.
What was the windiest day in Tōon?
The windiest day measured in Tōon between 1940 and 2025 was 7 September 2004, with winds reaching 46.5 km/h.
What is the warmest month in Tōon?
The warmest month in Tōon is August (25.3 °C on average); the coldest is January (1.9 °C).
How much does it rain in Tōon?
Tōon receives on average 1,912 mm of precipitation per year, spread over about 166 rainy days.
Is it sunny in Tōon?
Tōon gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tōon?
The heaviest 24-hour snowfall measured in Tōon between 1940 and 2025 was 15 February 1968, with 34.0 cm.
Are there tropical nights in Tōon?
Yes: Tōon has on average 70 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tōon?
In Tōon, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 3 August 2024, and the lowest was -18.7 °C on 19 February 1977.
Compare Tōon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tōon