Miyako climate — normals and trends
Miyako (Japan) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 1,362 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 (21.3 °C on average) and the coldest is February (0.5 °C). Rainfall peaks in September.
Miyako averages 65 frost days, 0 hot days (≥ 30 °C) and 139 rainy days per year.
Miyako has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 81 to 49 per year over the period.
The hottest day of the period reached 29.4 °C (on 17 August 2019) and the coldest -8.9 °C (on 7 February 1984).
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
MiyakoIwate
- coords
- 39.65°, 141.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
11.9°C
Average daily low
8.6°C
Annual rainfall
1,362mm
Sunshine / day
8.6h
Mean relative humidity
76%
Average peak wind
25.0km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
65 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
93.9 cm
Average feels-like high
9.9 °C
Average feels-like low
5.2 °C
Average peak gust
38.0 km/h
Tropical nights (≥ 20 °C)
30 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.46 · 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
29.4 °C
17 August 2019
Coldest day
-8.9 °C
7 February 1984
Wettest day
205 mm
15 September 1947
Windiest day
82.4 km/h
20 September 1990
Strongest gust
137.9 km/h
20 September 1990
Hottest feels-like
34.9 °C
20 August 2023
Coldest feels-like
-17.1 °C
13 February 1941
Snowiest day
39.6 cm
6 January 1963
Sunniest day
14.8 h
18 June 2025
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 | 4.9 °C | +1.9 °C | 44 mm | -26 mm |
| Feb | 4.1 °C | +1.3 °C | 20 mm | -53 mm |
| Mar | 6.9 °C | +2.0 °C | 119 mm | +22 mm |
| Apr | 9.8 °C | +0.9 °C | 122 mm | +24 mm |
| May | 13.5 °C | +0.7 °C | 126 mm | +23 mm |
| Jun | 18.8 °C | +2.8 °C | 114 mm | -7 mm |
| Jul | 23.7 °C | +3.8 °C | 48 mm | -103 mm |
| Aug | 25.3 °C | +2.9 °C | 81 mm | -76 mm |
| Sep | 23.0 °C | +2.7 °C | 171 mm | -27 mm |
| Oct | 16.9 °C | +1.1 °C | 176 mm | +34 mm |
| Nov | 11.8 °C | +1.2 °C | 99 mm | +19 mm |
| Dec | 7.5 °C | +1.7 °C | 80 mm | +9 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 Miyako?
Miyako has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 1,362 mm of precipitation per year.
What is the hottest day ever recorded in Miyako?
The hottest day measured in Miyako between 1940 and 2025 was 17 August 2019, reaching 29.4 °C.
What is the coldest day in Miyako?
The coldest day measured in Miyako between 1940 and 2025 was 7 February 1984, at -8.9 °C.
Does it snow in Miyako?
Yes. Miyako gets on average 93.9 cm of snow per year and has around 65 frost days.
Has the climate of Miyako warmed?
Yes: Miyako warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Miyako?
The wettest day measured in Miyako between 1940 and 2025 was 15 September 1947, with 205 mm of rain in 24 hours.
What was the windiest day in Miyako?
The windiest day measured in Miyako between 1940 and 2025 was 20 September 1990, with winds reaching 82.4 km/h.
What is the warmest month in Miyako?
The warmest month in Miyako is August (21.3 °C on average); the coldest is February (0.5 °C).
How much does it rain in Miyako?
Miyako receives on average 1,362 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Miyako?
Miyako gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Miyako?
The heaviest 24-hour snowfall measured in Miyako between 1940 and 2025 was 6 January 1963, with 39.6 cm.
Are there tropical nights in Miyako?
Yes: Miyako has on average 30 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Miyako?
In Miyako, between 1940 and 2025, the highest apparent temperature reached 34.9 °C on 20 August 2023, and the lowest was -17.1 °C on 13 February 1941.
Compare Miyako with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Miyako