Maebashi climate — normals and trends
Maebashi (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.9 °C and it receives 1,623 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 (23.8 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in July.
Maebashi averages 87 frost days, 12 hot days (≥ 30 °C) and 183 rainy days per year.
Maebashi has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 111 to 63 per year over the period.
The hottest day of the period reached 35.6 °C (on 11 August 2020) and the coldest -17.5 °C (on 17 January 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
MaebashiGunma
- coords
- 36.40°, 139.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.9°C
Average daily high
16.1°C
Average daily low
8.0°C
Annual rainfall
1,623mm
Sunshine / day
8.7h
Mean relative humidity
72%
Average peak wind
11.2km/h
Seasonal range
23.5°C
Frost days (< 0 °C)
87 d/yr
Hot days (≥ 30 °C)
12 d/yr
Rainy days (≥ 1 mm)
183 d/yr
Annual snowfall
82.9 cm
Average feels-like high
15.4 °C
Average feels-like low
6.6 °C
Average peak gust
32.1 km/h
Tropical nights (≥ 20 °C)
41 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.69 · 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
35.6 °C
11 August 2020
Coldest day
-17.5 °C
17 January 1942
Wettest day
197 mm
12 October 2019
Windiest day
46.1 km/h
2 August 1982
Strongest gust
169.2 km/h
27 September 1959
Hottest feels-like
41.2 °C
7 July 2024
Coldest feels-like
-23.3 °C
17 January 1942
Snowiest day
59.4 cm
15 February 2014
Sunniest day
14.0 h
16 June 2004
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 | 6.2 °C | +1.4 °C | 43 mm | -16 mm |
| Feb | 4.9 °C | -0.6 °C | 36 mm | -35 mm |
| Mar | 11.0 °C | +1.8 °C | 134 mm | +25 mm |
| Apr | 16.6 °C | +1.3 °C | 130 mm | +6 mm |
| May | 19.7 °C | -0.1 °C | 190 mm | +44 mm |
| Jun | 25.6 °C | +3.1 °C | 148 mm | -51 mm |
| Jul | 29.3 °C | +3.0 °C | 123 mm | -102 mm |
| Aug | 30.3 °C | +2.9 °C | 89 mm | -93 mm |
| Sep | 26.2 °C | +2.9 °C | 160 mm | -55 mm |
| Oct | 18.4 °C | +0.5 °C | 144 mm | -17 mm |
| Nov | 13.4 °C | +0.5 °C | 32 mm | -46 mm |
| Dec | 8.6 °C | +0.9 °C | 49 mm | -7 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 Maebashi?
Maebashi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 11.9 °C and it receives 1,623 mm of precipitation per year.
What is the hottest day ever recorded in Maebashi?
The hottest day measured in Maebashi between 1940 and 2025 was 11 August 2020, reaching 35.6 °C.
What is the coldest day in Maebashi?
The coldest day measured in Maebashi between 1940 and 2025 was 17 January 1942, at -17.5 °C.
Does it snow in Maebashi?
Yes. Maebashi gets on average 82.9 cm of snow per year and has around 87 frost days.
Has the climate of Maebashi warmed?
Yes: Maebashi warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Maebashi?
The wettest day measured in Maebashi between 1940 and 2025 was 12 October 2019, with 197 mm of rain in 24 hours.
What was the windiest day in Maebashi?
The windiest day measured in Maebashi between 1940 and 2025 was 2 August 1982, with winds reaching 46.1 km/h.
What is the warmest month in Maebashi?
The warmest month in Maebashi is August (23.8 °C on average); the coldest is January (0.3 °C).
How much does it rain in Maebashi?
Maebashi receives on average 1,623 mm of precipitation per year, spread over about 183 rainy days.
Is it sunny in Maebashi?
Maebashi gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Maebashi?
The heaviest 24-hour snowfall measured in Maebashi between 1940 and 2025 was 15 February 2014, with 59.4 cm.
Are there tropical nights in Maebashi?
Yes: Maebashi has on average 41 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Maebashi?
In Maebashi, between 1940 and 2025, the highest apparent temperature reached 41.2 °C on 7 July 2024, and the lowest was -23.3 °C on 17 January 1942.
Compare Maebashi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Maebashi