Wakuya climate — normals and trends
Wakuya (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.3 °C and it receives 1,156 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 (24.0 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in September.
Wakuya averages 51 frost days, 3 hot days (≥ 30 °C) and 129 rainy days per year.
Wakuya has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 75 to 27 per year over the period.
The hottest day of the period reached 33.0 °C (on 15 August 1994) and the coldest -12.6 °C (on 8 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
WakuyaMiyagi
- coords
- 38.54°, 141.13°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.3°C
Average daily high
15.0°C
Average daily low
9.7°C
Annual rainfall
1,156mm
Sunshine / day
8.6h
Mean relative humidity
75%
Average peak wind
20.9km/h
Seasonal range
22.1°C
Frost days (< 0 °C)
51 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
129 d/yr
Annual snowfall
35.0 cm
Average feels-like high
13.5 °C
Average feels-like low
7.6 °C
Average peak gust
36.9 km/h
Tropical nights (≥ 20 °C)
52 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.53 · 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
33.0 °C
15 August 1994
Coldest day
-12.6 °C
8 February 1942
Wettest day
158 mm
30 August 1998
Windiest day
66.0 km/h
16 September 1961
Strongest gust
128.2 km/h
16 September 1961
Hottest feels-like
40.2 °C
29 August 2020
Coldest feels-like
-17.7 °C
8 February 1942
Snowiest day
19.3 cm
18 January 2016
Sunniest day
14.6 h
13 June 1946
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 | 6.6 °C | +2.0 °C | 38 mm | -10 mm |
| Feb | 5.7 °C | +0.7 °C | 21 mm | -29 mm |
| Mar | 10.1 °C | +2.0 °C | 63 mm | -18 mm |
| Apr | 13.9 °C | +1.0 °C | 96 mm | +5 mm |
| May | 17.7 °C | +0.6 °C | 170 mm | +72 mm |
| Jun | 24.0 °C | +3.7 °C | 74 mm | -42 mm |
| Jul | 28.5 °C | +4.5 °C | 52 mm | -97 mm |
| Aug | 29.2 °C | +3.0 °C | 190 mm | +66 mm |
| Sep | 26.0 °C | +2.7 °C | 121 mm | -35 mm |
| Oct | 19.0 °C | +0.8 °C | 135 mm | +12 mm |
| Nov | 13.6 °C | +0.8 °C | 49 mm | -18 mm |
| Dec | 8.9 °C | +1.5 °C | 64 mm | +10 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 Wakuya?
Wakuya has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.3 °C and it receives 1,156 mm of precipitation per year.
What is the hottest day ever recorded in Wakuya?
The hottest day measured in Wakuya between 1940 and 2025 was 15 August 1994, reaching 33.0 °C.
What is the coldest day in Wakuya?
The coldest day measured in Wakuya between 1940 and 2025 was 8 February 1942, at -12.6 °C.
Does it snow in Wakuya?
Yes. Wakuya gets on average 35.0 cm of snow per year and has around 51 frost days.
Has the climate of Wakuya warmed?
Yes: Wakuya warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wakuya?
The wettest day measured in Wakuya between 1940 and 2025 was 30 August 1998, with 158 mm of rain in 24 hours.
What was the windiest day in Wakuya?
The windiest day measured in Wakuya between 1940 and 2025 was 16 September 1961, with winds reaching 66.0 km/h.
What is the warmest month in Wakuya?
The warmest month in Wakuya is August (24.0 °C on average); the coldest is January (1.9 °C).
How much does it rain in Wakuya?
Wakuya receives on average 1,156 mm of precipitation per year, spread over about 129 rainy days.
Is it sunny in Wakuya?
Wakuya 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 Wakuya?
The heaviest 24-hour snowfall measured in Wakuya between 1940 and 2025 was 18 January 2016, with 19.3 cm.
Are there tropical nights in Wakuya?
Yes: Wakuya has on average 52 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wakuya?
In Wakuya, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 29 August 2020, and the lowest was -17.7 °C on 8 February 1942.
Compare Wakuya with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wakuya