Yonago climate — normals and trends
Yonago (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.5 °C and it receives 1,830 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 (26.4 °C on average) and the coldest is January (6.0 °C). Rainfall peaks in January.
Yonago averages 2 frost days, 3 hot days (≥ 30 °C) and 185 rainy days per year.
Yonago has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 4 to 0 per year over the period.
The hottest day of the period reached 33.1 °C (on 11 August 1994) and the coldest -4.5 °C (on 26 February 1981).
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
YonagoTottori
- coords
- 35.43°, 133.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.5°C
Average daily high
17.0°C
Average daily low
14.0°C
Annual rainfall
1,830mm
Sunshine / day
8.8h
Mean relative humidity
74%
Average peak wind
27.4km/h
Seasonal range
20.4°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
185 d/yr
Annual snowfall
74.8 cm
Average feels-like high
16.0 °C
Average feels-like low
11.5 °C
Average peak gust
42.1 km/h
Tropical nights (≥ 20 °C)
98 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
33.1 °C
11 August 1994
Coldest day
-4.5 °C
26 February 1981
Wettest day
191 mm
10 August 2025
Windiest day
92.0 km/h
18 September 1945
Strongest gust
156.2 km/h
18 September 1945
Hottest feels-like
39.9 °C
3 August 2023
Coldest feels-like
-16.4 °C
26 February 1981
Snowiest day
22.2 cm
1 February 2005
Sunniest day
14.0 h
21 May 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 | 8.2 °C | +0.7 °C | 170 mm | -26 mm |
| Feb | 6.5 °C | -1.1 °C | 201 mm | +50 mm |
| Mar | 11.1 °C | +0.8 °C | 188 mm | +58 mm |
| Apr | 14.9 °C | +0.2 °C | 84 mm | -33 mm |
| May | 18.6 °C | +0.2 °C | 155 mm | +31 mm |
| Jun | 23.7 °C | +1.9 °C | 163 mm | -1 mm |
| Jul | 28.6 °C | +2.8 °C | 29 mm | -160 mm |
| Aug | 29.5 °C | +1.9 °C | 300 mm | +174 mm |
| Sep | 27.4 °C | +2.9 °C | 151 mm | -36 mm |
| Oct | 21.5 °C | +1.8 °C | 155 mm | +30 mm |
| Nov | 16.2 °C | +0.8 °C | 79 mm | -53 mm |
| Dec | 12.0 °C | +1.5 °C | 169 mm | -22 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 Yonago?
Yonago has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.5 °C and it receives 1,830 mm of precipitation per year.
What is the hottest day ever recorded in Yonago?
The hottest day measured in Yonago between 1940 and 2025 was 11 August 1994, reaching 33.1 °C.
What is the coldest day in Yonago?
The coldest day measured in Yonago between 1940 and 2025 was 26 February 1981, at -4.5 °C.
Does it snow in Yonago?
Yes. Yonago gets on average 74.8 cm of snow per year and has around 2 frost days.
Has the climate of Yonago warmed?
Yes: Yonago warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yonago?
The wettest day measured in Yonago between 1940 and 2025 was 10 August 2025, with 191 mm of rain in 24 hours.
What was the windiest day in Yonago?
The windiest day measured in Yonago between 1940 and 2025 was 18 September 1945, with winds reaching 92.0 km/h.
What is the warmest month in Yonago?
The warmest month in Yonago is August (26.4 °C on average); the coldest is January (6.0 °C).
How much does it rain in Yonago?
Yonago receives on average 1,830 mm of precipitation per year, spread over about 185 rainy days.
Is it sunny in Yonago?
Yonago gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Yonago?
The heaviest 24-hour snowfall measured in Yonago between 1940 and 2025 was 1 February 2005, with 22.2 cm.
Are there tropical nights in Yonago?
Yes: Yonago has on average 98 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Yonago?
In Yonago, between 1940 and 2025, the highest apparent temperature reached 39.9 °C on 3 August 2023, and the lowest was -16.4 °C on 26 February 1981.
Compare Yonago with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yonago