Tomobe climate — normals and trends
Tomobe (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.5 °C and it receives 1,419 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 (26.0 °C on average) and the coldest is January (3.4 °C). Rainfall peaks in September.
Tomobe averages 43 frost days, 32 hot days (≥ 30 °C) and 145 rainy days per year.
Tomobe 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 64 to 22 per year over the period.
The hottest day of the period reached 38.6 °C (on 4 August 1994) and the coldest -14.0 °C (on 17 February 1967).
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
TomobeIbaraki
- coords
- 36.35°, 140.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.5°C
Average daily high
18.5°C
Average daily low
11.0°C
Annual rainfall
1,419mm
Sunshine / day
8.2h
Mean relative humidity
73%
Average peak wind
15.2km/h
Seasonal range
22.6°C
Frost days (< 0 °C)
43 d/yr
Hot days (≥ 30 °C)
32 d/yr
Rainy days (≥ 1 mm)
145 d/yr
Annual snowfall
16.9 cm
Average feels-like high
18.2 °C
Average feels-like low
9.9 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
72 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 = 0.64 · 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
38.6 °C
4 August 1994
Coldest day
-14.0 °C
17 February 1967
Wettest day
196 mm
26 September 1958
Windiest day
60.7 km/h
1 October 2018
Strongest gust
146.9 km/h
25 September 1964
Hottest feels-like
45.3 °C
16 August 2007
Coldest feels-like
-18.6 °C
14 February 1967
Snowiest day
33.0 cm
8 February 2014
Sunniest day
14.0 h
25 June 1943
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 | 10.0 °C | +2.1 °C | 38 mm | -12 mm |
| Feb | 9.9 °C | +1.2 °C | 7 mm | -53 mm |
| Mar | 14.6 °C | +2.4 °C | 165 mm | +62 mm |
| Apr | 19.3 °C | +1.8 °C | 126 mm | +11 mm |
| May | 21.9 °C | +0.1 °C | 203 mm | +68 mm |
| Jun | 27.8 °C | +3.4 °C | 151 mm | -9 mm |
| Jul | 31.6 °C | +3.4 °C | 90 mm | -75 mm |
| Aug | 32.7 °C | +3.0 °C | 62 mm | -78 mm |
| Sep | 29.4 °C | +3.6 °C | 120 mm | -59 mm |
| Oct | 21.1 °C | +0.7 °C | 114 mm | -55 mm |
| Nov | 16.4 °C | +1.0 °C | 47 mm | -43 mm |
| Dec | 11.6 °C | +1.3 °C | 79 mm | +24 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 Tomobe?
Tomobe has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.5 °C and it receives 1,419 mm of precipitation per year.
What is the hottest day ever recorded in Tomobe?
The hottest day measured in Tomobe between 1940 and 2025 was 4 August 1994, reaching 38.6 °C.
What is the coldest day in Tomobe?
The coldest day measured in Tomobe between 1940 and 2025 was 17 February 1967, at -14.0 °C.
Does it snow in Tomobe?
Yes. Tomobe gets on average 16.9 cm of snow per year and has around 43 frost days.
Has the climate of Tomobe warmed?
Yes: Tomobe warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tomobe?
The wettest day measured in Tomobe between 1940 and 2025 was 26 September 1958, with 196 mm of rain in 24 hours.
What was the windiest day in Tomobe?
The windiest day measured in Tomobe between 1940 and 2025 was 1 October 2018, with winds reaching 60.7 km/h.
What is the warmest month in Tomobe?
The warmest month in Tomobe is August (26.0 °C on average); the coldest is January (3.4 °C).
How much does it rain in Tomobe?
Tomobe receives on average 1,419 mm of precipitation per year, spread over about 145 rainy days.
Is it sunny in Tomobe?
Tomobe gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tomobe?
The heaviest 24-hour snowfall measured in Tomobe between 1940 and 2025 was 8 February 2014, with 33.0 cm.
Are there tropical nights in Tomobe?
Yes: Tomobe has on average 72 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tomobe?
In Tomobe, between 1940 and 2025, the highest apparent temperature reached 45.3 °C on 16 August 2007, and the lowest was -18.6 °C on 14 February 1967.
Compare Tomobe with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tomobe