Mito, Japan climate
Cfa Humid subtropical
Mito has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 30°C, while the coldest is January averaging around −2°C at night. Around 1368 mm of precipitation falls each year, peaking in September (186 mm) and easing off in December (50 mm).
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Summers
Warm
Highs near 30°C in August.
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Winters
Cold
Lows near −2°C in January.
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Rain
Wet
About 1368 mm of rain a year.
Wettest in September
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Sky & trend
Often cloudy
Cloudy skies 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)Mito climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 18 | 22 | 25 | 29 | 30 | 26 | 21 | 16 | 11 |
| Avg temp (°C) | 3 | 4 | 7 | 12 | 17 | 20 | 24 | 26 | 22 | 17 | 11 | 6 |
| Avg low (°C) | −2 | −1 | 2 | 7 | 13 | 17 | 21 | 22 | 19 | 13 | 6 | 1 |
| Precipitation (mm) | 55 | 54 | 103 | 117 | 145 | 136 | 142 | 117 | 186 | 185 | 80 | 50 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 18 | 22 | 25 |
| Avg temp (°C) | 3 | 4 | 7 | 12 | 17 | 20 |
| Avg low (°C) | −2 | −1 | 2 | 7 | 13 | 17 |
| Precipitation (mm) | 55 | 54 | 103 | 117 | 145 | 136 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 26 | 21 | 16 | 11 |
| Avg temp (°C) | 24 | 26 | 22 | 17 | 11 | 6 |
| Avg low (°C) | 21 | 22 | 19 | 13 | 6 | 1 |
| Precipitation (mm) | 142 | 117 | 186 | 185 | 80 | 50 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 62 | 65 | 66 | 70 | 80 | 78 | 68 | 74 | 69 | 62 | 57 |
| Relative humidity (%) | 78 | 76 | 76 | 78 | 81 | 85 | 86 | 85 | 85 | 83 | 81 | 80 |
| Wind speed (km/h) | 8.9 | 9.0 | 8.8 | 8.0 | 6.6 | 5.5 | 5.1 | 5.3 | 6.6 | 7.3 | 7.5 | 8.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 62 | 65 | 66 | 70 | 80 |
| Relative humidity (%) | 78 | 76 | 76 | 78 | 81 | 85 |
| Wind speed (km/h) | 8.9 | 9.0 | 8.8 | 8.0 | 6.6 | 5.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 68 | 74 | 69 | 62 | 57 |
| Relative humidity (%) | 86 | 85 | 85 | 83 | 81 | 80 |
| Wind speed (km/h) | 5.1 | 5.3 | 6.6 | 7.3 | 7.5 | 8.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Mito, about 4 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.