Kamo climate — normals and trends
Kamo (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 1,733 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 (26.2 °C on average) and the coldest is January (2.4 °C). Rainfall peaks in July.
Kamo averages 41 frost days, 27 hot days (≥ 30 °C) and 210 rainy days per year.
Kamo 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 69 to 13 per year over the period.
The hottest day of the period reached 38.4 °C (on 23 August 2018) and the coldest -9.7 °C (on 1 February 1948).
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
KamoNiigata
- coords
- 37.66°, 139.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
17.0°C
Average daily low
10.2°C
Annual rainfall
1,733mm
Sunshine / day
8.4h
Mean relative humidity
76%
Average peak wind
16.2km/h
Seasonal range
23.8°C
Frost days (< 0 °C)
41 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
210 d/yr
Annual snowfall
157.1 cm
Average feels-like high
16.7 °C
Average feels-like low
8.9 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
68 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
38.4 °C
23 August 2018
Coldest day
-9.7 °C
1 February 1948
Wettest day
144 mm
6 August 1976
Windiest day
63.4 km/h
16 September 1961
Strongest gust
135.4 km/h
16 September 1961
Hottest feels-like
45.1 °C
23 August 2023
Coldest feels-like
-14.7 °C
12 February 1942
Snowiest day
21.9 cm
15 February 2014
Sunniest day
14.1 h
11 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 | 5.7 °C | +1.0 °C | 211 mm | +44 mm |
| Feb | 4.8 °C | -0.4 °C | 158 mm | +34 mm |
| Mar | 10.7 °C | +1.7 °C | 108 mm | -10 mm |
| Apr | 15.5 °C | 0.0 °C | 110 mm | +16 mm |
| May | 20.8 °C | +0.2 °C | 146 mm | +48 mm |
| Jun | 26.1 °C | +1.9 °C | 107 mm | -17 mm |
| Jul | 31.8 °C | +3.9 °C | 12 mm | -200 mm |
| Aug | 30.9 °C | +1.3 °C | 247 mm | +92 mm |
| Sep | 28.1 °C | +2.5 °C | 243 mm | +85 mm |
| Oct | 20.3 °C | +0.7 °C | 200 mm | +58 mm |
| Nov | 14.3 °C | +0.5 °C | 184 mm | +31 mm |
| Dec | 9.5 °C | +1.5 °C | 203 mm | +14 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 Kamo?
Kamo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 1,733 mm of precipitation per year.
What is the hottest day ever recorded in Kamo?
The hottest day measured in Kamo between 1940 and 2025 was 23 August 2018, reaching 38.4 °C.
What is the coldest day in Kamo?
The coldest day measured in Kamo between 1940 and 2025 was 1 February 1948, at -9.7 °C.
Does it snow in Kamo?
Yes. Kamo gets on average 157.1 cm of snow per year and has around 41 frost days.
Has the climate of Kamo warmed?
Yes: Kamo warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kamo?
The wettest day measured in Kamo between 1940 and 2025 was 6 August 1976, with 144 mm of rain in 24 hours.
What was the windiest day in Kamo?
The windiest day measured in Kamo between 1940 and 2025 was 16 September 1961, with winds reaching 63.4 km/h.
What is the warmest month in Kamo?
The warmest month in Kamo is August (26.2 °C on average); the coldest is January (2.4 °C).
How much does it rain in Kamo?
Kamo receives on average 1,733 mm of precipitation per year, spread over about 210 rainy days.
Is it sunny in Kamo?
Kamo 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 Kamo?
The heaviest 24-hour snowfall measured in Kamo between 1940 and 2025 was 15 February 2014, with 21.9 cm.
Are there tropical nights in Kamo?
Yes: Kamo has on average 68 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kamo?
In Kamo, between 1940 and 2025, the highest apparent temperature reached 45.1 °C on 23 August 2023, and the lowest was -14.7 °C on 12 February 1942.
Compare Kamo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kamo