Tamano climate — normals and trends
Tamano (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.5 °C and it receives 1,244 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 (27.3 °C on average) and the coldest is January (6.7 °C). Rainfall peaks in June.
Tamano averages 1 frost days, 11 hot days (≥ 30 °C) and 129 rainy days per year.
Tamano has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 33.3 °C (on 8 August 1994) and the coldest -3.0 °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
TamanoOkayama
- coords
- 34.52°, 133.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.5°C
Average daily high
18.5°C
Average daily low
14.5°C
Annual rainfall
1,244mm
Sunshine / day
9.0h
Mean relative humidity
72%
Average peak wind
21.5km/h
Seasonal range
20.6°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
11 d/yr
Rainy days (≥ 1 mm)
129 d/yr
Annual snowfall
3.7 cm
Average feels-like high
18.1 °C
Average feels-like low
13.1 °C
Average peak gust
35.0 km/h
Tropical nights (≥ 20 °C)
109 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.44 · 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
33.3 °C
8 August 1994
Coldest day
-3.0 °C
26 February 1981
Wettest day
138 mm
27 October 1961
Windiest day
77.7 km/h
20 October 2004
Strongest gust
139.0 km/h
4 September 1993
Hottest feels-like
40.6 °C
4 August 2025
Coldest feels-like
-11.7 °C
26 February 1981
Snowiest day
7.8 cm
15 February 1968
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 | 8.7 °C | -0.2 °C | 16 mm | -42 mm |
| Feb | 7.5 °C | -1.8 °C | 33 mm | -33 mm |
| Mar | 11.6 °C | -0.6 °C | 105 mm | +14 mm |
| Apr | 16.1 °C | -0.6 °C | 58 mm | -50 mm |
| May | 19.7 °C | -0.7 °C | 160 mm | +36 mm |
| Jun | 24.3 °C | +0.7 °C | 206 mm | +32 mm |
| Jul | 29.2 °C | +1.9 °C | 44 mm | -106 mm |
| Aug | 31.0 °C | +2.0 °C | 104 mm | +9 mm |
| Sep | 28.7 °C | +2.5 °C | 154 mm | +5 mm |
| Oct | 23.2 °C | +2.0 °C | 171 mm | +62 mm |
| Nov | 16.6 °C | +0.3 °C | 25 mm | -44 mm |
| Dec | 12.1 °C | +0.7 °C | 31 mm | -21 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 Tamano?
Tamano has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.5 °C and it receives 1,244 mm of precipitation per year.
What is the hottest day ever recorded in Tamano?
The hottest day measured in Tamano between 1940 and 2025 was 8 August 1994, reaching 33.3 °C.
What is the coldest day in Tamano?
The coldest day measured in Tamano between 1940 and 2025 was 26 February 1981, at -3.0 °C.
Does it snow in Tamano?
Yes. Tamano gets on average 3.7 cm of snow per year and has around 1 frost days.
Has the climate of Tamano warmed?
Yes: Tamano warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tamano?
The wettest day measured in Tamano between 1940 and 2025 was 27 October 1961, with 138 mm of rain in 24 hours.
What was the windiest day in Tamano?
The windiest day measured in Tamano between 1940 and 2025 was 20 October 2004, with winds reaching 77.7 km/h.
What is the warmest month in Tamano?
The warmest month in Tamano is August (27.3 °C on average); the coldest is January (6.7 °C).
How much does it rain in Tamano?
Tamano receives on average 1,244 mm of precipitation per year, spread over about 129 rainy days.
Is it sunny in Tamano?
Tamano gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tamano?
The heaviest 24-hour snowfall measured in Tamano between 1940 and 2025 was 15 February 1968, with 7.8 cm.
Are there tropical nights in Tamano?
Yes: Tamano has on average 109 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tamano?
In Tamano, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 4 August 2025, and the lowest was -11.7 °C on 26 February 1981.
Compare Tamano with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tamano