Miyoshi climate — normals and trends
Miyoshi (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.2 °C and it receives 1,554 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 (1.7 °C). Rainfall peaks in July.
Miyoshi averages 76 frost days, 32 hot days (≥ 30 °C) and 150 rainy days per year.
Miyoshi 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 100 to 52 per year over the period.
The hottest day of the period reached 36.0 °C (on 1 August 2001) and the coldest -14.9 °C (on 10 February 1940).
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
MiyoshiHiroshima
- coords
- 34.80°, 132.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.2°C
Average daily high
17.9°C
Average daily low
8.9°C
Annual rainfall
1,554mm
Sunshine / day
8.3h
Mean relative humidity
76%
Average peak wind
13.6km/h
Seasonal range
23.6°C
Frost days (< 0 °C)
76 d/yr
Hot days (≥ 30 °C)
32 d/yr
Rainy days (≥ 1 mm)
150 d/yr
Annual snowfall
49.3 cm
Average feels-like high
17.3 °C
Average feels-like low
7.8 °C
Average peak gust
37.2 km/h
Tropical nights (≥ 20 °C)
59 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.71 · 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
36.0 °C
1 August 2001
Coldest day
-14.9 °C
10 February 1940
Wettest day
212 mm
14 August 2021
Windiest day
58.0 km/h
7 September 2004
Strongest gust
174.2 km/h
7 September 2004
Hottest feels-like
41.5 °C
1 August 2001
Coldest feels-like
-18.8 °C
10 February 1940
Snowiest day
28.5 cm
9 March 2010
Sunniest day
14.0 h
27 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 | 6.0 °C | +0.3 °C | 30 mm | -32 mm |
| Feb | 3.7 °C | -3.1 °C | 60 mm | -10 mm |
| Mar | 12.2 °C | +0.9 °C | 145 mm | +46 mm |
| Apr | 18.6 °C | +1.2 °C | 63 mm | -58 mm |
| May | 22.0 °C | +0.2 °C | 179 mm | +38 mm |
| Jun | 27.2 °C | +2.3 °C | 238 mm | +17 mm |
| Jul | 32.4 °C | +3.8 °C | 62 mm | -186 mm |
| Aug | 31.5 °C | +1.6 °C | 218 mm | +58 mm |
| Sep | 27.8 °C | +2.0 °C | 188 mm | -11 mm |
| Oct | 22.0 °C | +1.8 °C | 137 mm | +35 mm |
| Nov | 15.1 °C | +0.7 °C | 36 mm | -36 mm |
| Dec | 9.2 °C | +0.7 °C | 60 mm | +0 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 Miyoshi?
Miyoshi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 1,554 mm of precipitation per year.
What is the hottest day ever recorded in Miyoshi?
The hottest day measured in Miyoshi between 1940 and 2025 was 1 August 2001, reaching 36.0 °C.
What is the coldest day in Miyoshi?
The coldest day measured in Miyoshi between 1940 and 2025 was 10 February 1940, at -14.9 °C.
Does it snow in Miyoshi?
Yes. Miyoshi gets on average 49.3 cm of snow per year and has around 76 frost days.
Has the climate of Miyoshi warmed?
Yes: Miyoshi warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Miyoshi?
The wettest day measured in Miyoshi between 1940 and 2025 was 14 August 2021, with 212 mm of rain in 24 hours.
What was the windiest day in Miyoshi?
The windiest day measured in Miyoshi between 1940 and 2025 was 7 September 2004, with winds reaching 58.0 km/h.
What is the warmest month in Miyoshi?
The warmest month in Miyoshi is August (25.3 °C on average); the coldest is January (1.7 °C).
How much does it rain in Miyoshi?
Miyoshi receives on average 1,554 mm of precipitation per year, spread over about 150 rainy days.
Is it sunny in Miyoshi?
Miyoshi gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Miyoshi?
The heaviest 24-hour snowfall measured in Miyoshi between 1940 and 2025 was 9 March 2010, with 28.5 cm.
Are there tropical nights in Miyoshi?
Yes: Miyoshi has on average 59 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Miyoshi?
In Miyoshi, between 1940 and 2025, the highest apparent temperature reached 41.5 °C on 1 August 2001, and the lowest was -18.8 °C on 10 February 1940.
Compare Miyoshi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Miyoshi