Morioka climate — normals and trends
Morioka (Japan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.4 °C and it receives 1,193 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 (21.1 °C on average) and the coldest is January (-5.8 °C). Rainfall peaks in July.
Morioka averages 148 frost days, 2 hot days (≥ 30 °C) and 166 rainy days per year.
Morioka 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 163 to 133 per year over the period.
The hottest day of the period reached 33.3 °C (on 14 August 2007) and the coldest -23.8 °C (on 29 January 1947).
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
MoriokaIwate
- coords
- 39.70°, 141.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.4°C
Average daily high
11.4°C
Average daily low
3.4°C
Annual rainfall
1,193mm
Sunshine / day
8.1h
Mean relative humidity
80%
Average peak wind
14.4km/h
Seasonal range
26.9°C
Frost days (< 0 °C)
148 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
166 d/yr
Annual snowfall
196.4 cm
Average feels-like high
9.5 °C
Average feels-like low
1.2 °C
Average peak gust
42.5 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
13.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.63 · 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
33.3 °C
14 August 2007
Coldest day
-23.8 °C
29 January 1947
Wettest day
148 mm
15 September 1947
Windiest day
42.1 km/h
28 September 1991
Strongest gust
133.6 km/h
16 February 2021
Hottest feels-like
37.8 °C
14 August 2007
Coldest feels-like
-28.2 °C
29 January 1947
Snowiest day
57.3 cm
29 March 1966
Sunniest day
14.8 h
12 June 1982
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 | 0.0 °C | +1.9 °C | 58 mm | -10 mm |
| Feb | -0.7 °C | +0.4 °C | 39 mm | -27 mm |
| Mar | 4.4 °C | +1.3 °C | 91 mm | -1 mm |
| Apr | 11.1 °C | +1.1 °C | 109 mm | +17 mm |
| May | 17.3 °C | +1.1 °C | 107 mm | +15 mm |
| Jun | 24.0 °C | +4.2 °C | 94 mm | -10 mm |
| Jul | 28.7 °C | +5.4 °C | 41 mm | -106 mm |
| Aug | 27.7 °C | +2.9 °C | 98 mm | -35 mm |
| Sep | 23.3 °C | +2.9 °C | 176 mm | +32 mm |
| Oct | 14.6 °C | +0.3 °C | 94 mm | -4 mm |
| Nov | 7.8 °C | +0.4 °C | 108 mm | +29 mm |
| Dec | 2.0 °C | +1.1 °C | 96 mm | +17 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 Morioka?
Morioka has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.4 °C and it receives 1,193 mm of precipitation per year.
What is the hottest day ever recorded in Morioka?
The hottest day measured in Morioka between 1940 and 2025 was 14 August 2007, reaching 33.3 °C.
What is the coldest day in Morioka?
The coldest day measured in Morioka between 1940 and 2025 was 29 January 1947, at -23.8 °C.
Does it snow in Morioka?
Yes. Morioka gets on average 196.4 cm of snow per year and has around 148 frost days.
Has the climate of Morioka warmed?
Yes: Morioka warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Morioka?
The wettest day measured in Morioka between 1940 and 2025 was 15 September 1947, with 148 mm of rain in 24 hours.
What was the windiest day in Morioka?
The windiest day measured in Morioka between 1940 and 2025 was 28 September 1991, with winds reaching 42.1 km/h.
What is the warmest month in Morioka?
The warmest month in Morioka is August (21.1 °C on average); the coldest is January (-5.8 °C).
How much does it rain in Morioka?
Morioka receives on average 1,193 mm of precipitation per year, spread over about 166 rainy days.
Is it sunny in Morioka?
Morioka gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Morioka?
The heaviest 24-hour snowfall measured in Morioka between 1940 and 2025 was 29 March 1966, with 57.3 cm.
Are there tropical nights in Morioka?
Yes: Morioka has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Morioka?
In Morioka, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 14 August 2007, and the lowest was -28.2 °C on 29 January 1947.
Compare Morioka with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Morioka