Ninohe climate — normals and trends
Ninohe (Japan) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.0 °C and it receives 1,095 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 (22.3 °C on average) and the coldest is January (-3.9 °C). Rainfall peaks in July.
Ninohe averages 128 frost days, 6 hot days (≥ 30 °C) and 151 rainy days per year.
Ninohe 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 146 to 110 per year over the period.
The hottest day of the period reached 34.8 °C (on 29 July 2025) and the coldest -21.1 °C (on 30 January 1944).
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
NinoheIwate
- coords
- 40.29°, 141.31°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.0°C
Average daily high
13.1°C
Average daily low
5.1°C
Annual rainfall
1,095mm
Sunshine / day
8.4h
Mean relative humidity
76%
Average peak wind
15.6km/h
Seasonal range
26.2°C
Frost days (< 0 °C)
128 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
152.4 cm
Average feels-like high
11.3 °C
Average feels-like low
2.7 °C
Average peak gust
42.4 km/h
Tropical nights (≥ 20 °C)
23 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
34.8 °C
29 July 2025
Coldest day
-21.1 °C
30 January 1944
Wettest day
117 mm
30 September 2004
Windiest day
48.9 km/h
28 September 1991
Strongest gust
138.6 km/h
28 September 1991
Hottest feels-like
40.5 °C
24 August 2023
Coldest feels-like
-25.7 °C
10 January 1945
Snowiest day
59.4 cm
29 March 1966
Sunniest day
14.8 h
13 June 1999
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 | 2.3 °C | +2.5 °C | 49 mm | -8 mm |
| Feb | 2.0 °C | +1.3 °C | 28 mm | -31 mm |
| Mar | 7.0 °C | +2.0 °C | 105 mm | +23 mm |
| Apr | 13.3 °C | +0.9 °C | 101 mm | +18 mm |
| May | 18.7 °C | +0.8 °C | 95 mm | +10 mm |
| Jun | 25.6 °C | +4.5 °C | 69 mm | -32 mm |
| Jul | 30.4 °C | +5.8 °C | 36 mm | -99 mm |
| Aug | 29.7 °C | +3.5 °C | 68 mm | -64 mm |
| Sep | 25.0 °C | +3.0 °C | 135 mm | +1 mm |
| Oct | 16.2 °C | +0.3 °C | 75 mm | -16 mm |
| Nov | 9.7 °C | +0.6 °C | 129 mm | +60 mm |
| Dec | 4.3 °C | +1.6 °C | 99 mm | +32 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 Ninohe?
Ninohe has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.0 °C and it receives 1,095 mm of precipitation per year.
What is the hottest day ever recorded in Ninohe?
The hottest day measured in Ninohe between 1940 and 2025 was 29 July 2025, reaching 34.8 °C.
What is the coldest day in Ninohe?
The coldest day measured in Ninohe between 1940 and 2025 was 30 January 1944, at -21.1 °C.
Does it snow in Ninohe?
Yes. Ninohe gets on average 152.4 cm of snow per year and has around 128 frost days.
Has the climate of Ninohe warmed?
Yes: Ninohe warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ninohe?
The wettest day measured in Ninohe between 1940 and 2025 was 30 September 2004, with 117 mm of rain in 24 hours.
What was the windiest day in Ninohe?
The windiest day measured in Ninohe between 1940 and 2025 was 28 September 1991, with winds reaching 48.9 km/h.
What is the warmest month in Ninohe?
The warmest month in Ninohe is August (22.3 °C on average); the coldest is January (-3.9 °C).
How much does it rain in Ninohe?
Ninohe receives on average 1,095 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Ninohe?
Ninohe 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 Ninohe?
The heaviest 24-hour snowfall measured in Ninohe between 1940 and 2025 was 29 March 1966, with 59.4 cm.
Are there tropical nights in Ninohe?
Yes: Ninohe has on average 23 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ninohe?
In Ninohe, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 24 August 2023, and the lowest was -25.7 °C on 10 January 1945.
Compare Ninohe with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ninohe