Masuda climate — normals and trends
Masuda (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 1,803 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 (6.4 °C). Rainfall peaks in July.
Masuda averages 2 frost days, 3 hot days (≥ 30 °C) and 167 rainy days per year.
Masuda has warmed by +1.2 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 32.3 °C (on 28 August 2010) and the coldest -5.3 °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
MasudaShimane
- coords
- 34.67°, 131.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.8°C
Average daily high
17.3°C
Average daily low
14.4°C
Annual rainfall
1,803mm
Sunshine / day
8.6h
Mean relative humidity
75%
Average peak wind
25.8km/h
Seasonal range
20.0°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
50.2 cm
Average feels-like high
16.6 °C
Average feels-like low
12.2 °C
Average peak gust
39.2 km/h
Tropical nights (≥ 20 °C)
101 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
32.3 °C
28 August 2010
Coldest day
-5.3 °C
26 February 1981
Wettest day
168 mm
2 September 1945
Windiest day
77.9 km/h
17 September 1945
Strongest gust
140.4 km/h
7 September 2004
Hottest feels-like
40.0 °C
4 August 2023
Coldest feels-like
-17.0 °C
26 February 1981
Snowiest day
20.9 cm
13 January 1987
Sunniest day
13.9 h
17 June 2025
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 | 8.3 °C | +0.4 °C | 80 mm | -66 mm |
| Feb | 6.9 °C | -1.3 °C | 119 mm | -10 mm |
| Mar | 11.4 °C | +0.4 °C | 197 mm | +64 mm |
| Apr | 15.5 °C | +0.3 °C | 89 mm | -43 mm |
| May | 18.7 °C | -0.2 °C | 175 mm | +35 mm |
| Jun | 23.4 °C | +1.4 °C | 182 mm | -21 mm |
| Jul | 28.4 °C | +2.5 °C | 55 mm | -171 mm |
| Aug | 29.0 °C | +1.3 °C | 241 mm | +105 mm |
| Sep | 27.4 °C | +2.7 °C | 212 mm | +20 mm |
| Oct | 22.1 °C | +2.1 °C | 126 mm | +10 mm |
| Nov | 16.5 °C | +0.9 °C | 61 mm | -52 mm |
| Dec | 12.4 °C | +1.7 °C | 119 mm | -20 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 Masuda?
Masuda has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 1,803 mm of precipitation per year.
What is the hottest day ever recorded in Masuda?
The hottest day measured in Masuda between 1940 and 2025 was 28 August 2010, reaching 32.3 °C.
What is the coldest day in Masuda?
The coldest day measured in Masuda between 1940 and 2025 was 26 February 1981, at -5.3 °C.
Does it snow in Masuda?
Yes. Masuda gets on average 50.2 cm of snow per year and has around 2 frost days.
Has the climate of Masuda warmed?
Yes: Masuda warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Masuda?
The wettest day measured in Masuda between 1940 and 2025 was 2 September 1945, with 168 mm of rain in 24 hours.
What was the windiest day in Masuda?
The windiest day measured in Masuda between 1940 and 2025 was 17 September 1945, with winds reaching 77.9 km/h.
What is the warmest month in Masuda?
The warmest month in Masuda is August (26.4 °C on average); the coldest is January (6.4 °C).
How much does it rain in Masuda?
Masuda receives on average 1,803 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Masuda?
Masuda gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Masuda?
The heaviest 24-hour snowfall measured in Masuda between 1940 and 2025 was 13 January 1987, with 20.9 cm.
Are there tropical nights in Masuda?
Yes: Masuda has on average 101 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Masuda?
In Masuda, between 1940 and 2025, the highest apparent temperature reached 40.0 °C on 4 August 2023, and the lowest was -17.0 °C on 26 February 1981.
Compare Masuda with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Masuda