Akita, Japan climate
Cfa Humid subtropical
Akita has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 29°C, while the coldest is January averaging around −2°C at night. Precipitation is fairly even year-round, totalling about 1742 mm.
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Summers
Warm
Highs near 29°C in August.
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Winters
Cold
Lows near −2°C in January.
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Rain
Very wet
About 1742 mm of rain a year.
Wettest in July
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Sky & trend
Often grey
Overcast skies dominate much of the year.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Akita climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 4 | 8 | 14 | 20 | 24 | 27 | 29 | 25 | 19 | 12 | 6 |
| Avg temp (°C) | 0 | 1 | 4 | 10 | 15 | 20 | 23 | 25 | 21 | 15 | 8 | 3 |
| Avg low (°C) | −2 | −2 | 0 | 5 | 11 | 16 | 20 | 22 | 17 | 10 | 5 | 0 |
| Precipitation (mm) | 119 | 99 | 99 | 110 | 125 | 123 | 197 | 185 | 161 | 175 | 189 | 160 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 4 | 8 | 14 | 20 | 24 |
| Avg temp (°C) | 0 | 1 | 4 | 10 | 15 | 20 |
| Avg low (°C) | −2 | −2 | 0 | 5 | 11 | 16 |
| Precipitation (mm) | 119 | 99 | 99 | 110 | 125 | 123 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 29 | 25 | 19 | 12 | 6 |
| Avg temp (°C) | 23 | 25 | 21 | 15 | 8 | 3 |
| Avg low (°C) | 20 | 22 | 17 | 10 | 5 | 0 |
| Precipitation (mm) | 197 | 185 | 161 | 175 | 189 | 160 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 80 | 78 | 73 | 71 | 74 | 79 | 71 | 74 | 72 | 78 | 84 |
| Relative humidity (%) | 83 | 81 | 77 | 78 | 80 | 82 | 85 | 82 | 79 | 78 | 80 | 83 |
| Wind speed (m/s) | 4.3 | 4.4 | 3.7 | 2.6 | 1.9 | 1.6 | 1.6 | 1.7 | 2.1 | 2.5 | 3.0 | 3.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 80 | 78 | 73 | 71 | 74 |
| Relative humidity (%) | 83 | 81 | 77 | 78 | 80 | 82 |
| Wind speed (m/s) | 4.3 | 4.4 | 3.7 | 2.6 | 1.9 | 1.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 71 | 74 | 72 | 78 | 84 |
| Relative humidity (%) | 85 | 82 | 79 | 78 | 80 | 83 |
| Wind speed (m/s) | 1.6 | 1.7 | 2.1 | 2.5 | 3.0 | 3.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Akita, about 2 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.