Omuta climate — normals and trends
Omuta (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.8 °C and it receives 1,823 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 (27.4 °C on average) and the coldest is January (6.6 °C). Rainfall peaks in June.
Omuta averages 6 frost days, 41 hot days (≥ 30 °C) and 136 rainy days per year.
Omuta has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 10 to 2 per year over the period.
The hottest day of the period reached 36.2 °C (on 27 August 2024) and the coldest -6.1 °C (on 23 January 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
OmutaFukuoka
- coords
- 33.03°, 130.45°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.8°C
Average daily high
20.2°C
Average daily low
13.5°C
Annual rainfall
1,823mm
Sunshine / day
8.1h
Mean relative humidity
74%
Average peak wind
14.4km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
6 d/yr
Hot days (≥ 30 °C)
41 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
2.4 cm
Average feels-like high
20.6 °C
Average feels-like low
13.1 °C
Average peak gust
31.1 km/h
Tropical nights (≥ 20 °C)
100 d/yr
Solar radiation
13.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °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
36.2 °C
27 August 2024
Coldest day
-6.1 °C
23 January 1981
Wettest day
236 mm
6 July 2018
Windiest day
77.0 km/h
27 September 1991
Strongest gust
166.3 km/h
27 September 1991
Hottest feels-like
43.6 °C
3 August 2024
Coldest feels-like
-10.2 °C
23 January 1981
Snowiest day
8.5 cm
19 January 1984
Sunniest day
13.8 h
2 June 1942
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 | 10.1 °C | +0.4 °C | 21 mm | -40 mm |
| Feb | 8.9 °C | -1.8 °C | 51 mm | -32 mm |
| Mar | 15.3 °C | +1.1 °C | 161 mm | +42 mm |
| Apr | 20.0 °C | +0.8 °C | 96 mm | -56 mm |
| May | 23.1 °C | +0.1 °C | 322 mm | +139 mm |
| Jun | 27.0 °C | +1.4 °C | 459 mm | +104 mm |
| Jul | 32.7 °C | +3.5 °C | 64 mm | -241 mm |
| Aug | 31.9 °C | +1.2 °C | 274 mm | +115 mm |
| Sep | 30.2 °C | +2.5 °C | 182 mm | +16 mm |
| Oct | 25.7 °C | +2.9 °C | 66 mm | -30 mm |
| Nov | 18.5 °C | +1.0 °C | 31 mm | -48 mm |
| Dec | 13.9 °C | +1.8 °C | 57 mm | -5 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 Omuta?
Omuta has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.8 °C and it receives 1,823 mm of precipitation per year.
What is the hottest day ever recorded in Omuta?
The hottest day measured in Omuta between 1940 and 2025 was 27 August 2024, reaching 36.2 °C.
What is the coldest day in Omuta?
The coldest day measured in Omuta between 1940 and 2025 was 23 January 1981, at -6.1 °C.
Does it snow in Omuta?
Yes. Omuta gets on average 2.4 cm of snow per year and has around 6 frost days.
Has the climate of Omuta warmed?
Yes: Omuta warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Omuta?
The wettest day measured in Omuta between 1940 and 2025 was 6 July 2018, with 236 mm of rain in 24 hours.
What was the windiest day in Omuta?
The windiest day measured in Omuta between 1940 and 2025 was 27 September 1991, with winds reaching 77.0 km/h.
What is the warmest month in Omuta?
The warmest month in Omuta is August (27.4 °C on average); the coldest is January (6.6 °C).
How much does it rain in Omuta?
Omuta receives on average 1,823 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Omuta?
Omuta gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Omuta?
The heaviest 24-hour snowfall measured in Omuta between 1940 and 2025 was 19 January 1984, with 8.5 cm.
Are there tropical nights in Omuta?
Yes: Omuta has on average 100 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Omuta?
In Omuta, between 1940 and 2025, the highest apparent temperature reached 43.6 °C on 3 August 2024, and the lowest was -10.2 °C on 23 January 1981.
Compare Omuta with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Omuta