Honchō climate — normals and trends
Honchō (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.9 °C and it receives 1,139 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 (21.0 °C on average) and the coldest is January (-3.7 °C). Rainfall peaks in September.
Honchō averages 124 frost days, 0 hot days (≥ 30 °C) and 133 rainy days per year.
Honchō has warmed by +2.6 °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 142 to 106 per year over the period.
The hottest day of the period reached 31.6 °C (on 26 August 2023) and the coldest -16.8 °C (on 18 January 1945).
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
HonchōHokkaido
- coords
- 41.89°, 140.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.9°C
Average daily high
10.7°C
Average daily low
5.0°C
Annual rainfall
1,139mm
Sunshine / day
8.4h
Mean relative humidity
79%
Average peak wind
16.4km/h
Seasonal range
24.7°C
Frost days (< 0 °C)
124 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
153.0 cm
Average feels-like high
9.0 °C
Average feels-like low
2.4 °C
Average peak gust
46.1 km/h
Tropical nights (≥ 20 °C)
14 d/yr
Solar radiation
13.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.59 · 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
31.6 °C
26 August 2023
Coldest day
-16.8 °C
18 January 1945
Wettest day
167 mm
11 September 2001
Windiest day
56.4 km/h
8 September 2004
Strongest gust
173.2 km/h
5 September 2018
Hottest feels-like
39.6 °C
26 August 2023
Coldest feels-like
-22.3 °C
18 January 1945
Snowiest day
40.4 cm
21 March 1975
Sunniest day
14.9 h
10 June 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 | 1.1 °C | +2.5 °C | 54 mm | -3 mm |
| Feb | 1.3 °C | +2.3 °C | 40 mm | -13 mm |
| Mar | 4.7 °C | +2.0 °C | 102 mm | +32 mm |
| Apr | 9.9 °C | +1.4 °C | 118 mm | +38 mm |
| May | 15.8 °C | +1.8 °C | 65 mm | -20 mm |
| Jun | 21.5 °C | +4.3 °C | 100 mm | +12 mm |
| Jul | 26.3 °C | +5.1 °C | 85 mm | -36 mm |
| Aug | 26.7 °C | +3.1 °C | 190 mm | +35 mm |
| Sep | 23.9 °C | +3.3 °C | 310 mm | +138 mm |
| Oct | 15.3 °C | +0.7 °C | 76 mm | -36 mm |
| Nov | 9.3 °C | +1.9 °C | 136 mm | +53 mm |
| Dec | 3.3 °C | +1.9 °C | 125 mm | +61 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 Honchō?
Honchō has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.9 °C and it receives 1,139 mm of precipitation per year.
What is the hottest day ever recorded in Honchō?
The hottest day measured in Honchō between 1940 and 2025 was 26 August 2023, reaching 31.6 °C.
What is the coldest day in Honchō?
The coldest day measured in Honchō between 1940 and 2025 was 18 January 1945, at -16.8 °C.
Does it snow in Honchō?
Yes. Honchō gets on average 153.0 cm of snow per year and has around 124 frost days.
Has the climate of Honchō warmed?
Yes: Honchō warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Honchō?
The wettest day measured in Honchō between 1940 and 2025 was 11 September 2001, with 167 mm of rain in 24 hours.
What was the windiest day in Honchō?
The windiest day measured in Honchō between 1940 and 2025 was 8 September 2004, with winds reaching 56.4 km/h.
What is the warmest month in Honchō?
The warmest month in Honchō is August (21.0 °C on average); the coldest is January (-3.7 °C).
How much does it rain in Honchō?
Honchō receives on average 1,139 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Honchō?
Honchō gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Honchō?
The heaviest 24-hour snowfall measured in Honchō between 1940 and 2025 was 21 March 1975, with 40.4 cm.
Are there tropical nights in Honchō?
Yes: Honchō has on average 14 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Honchō?
In Honchō, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 26 August 2023, and the lowest was -22.3 °C on 18 January 1945.
Compare Honchō with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Honchō