Ōami, Japan climate
Cfa Humid subtropical
Ōami has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around −2°C at night. Around 1673 mm of precipitation falls each year, peaking in October (257 mm) and easing off in December (71 mm).
☀️
Summers
Hot
Highs near 32°C in August.
❄️
Winters
Cold
Lows near −2°C in January.
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Rain
Very wet
About 1673 mm of rain a year.
Wettest in October
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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)Ōami climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 11 | 14 | 20 | 24 | 26 | 30 | 32 | 28 | 22 | 18 | 13 |
| Avg temp (°C) | 4 | 5 | 9 | 14 | 18 | 21 | 25 | 27 | 23 | 17 | 12 | 7 |
| Avg low (°C) | −2 | −1 | 3 | 8 | 13 | 17 | 22 | 23 | 19 | 13 | 7 | 1 |
| Precipitation (mm) | 82 | 74 | 138 | 133 | 130 | 171 | 152 | 115 | 237 | 257 | 114 | 71 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 11 | 14 | 20 | 24 | 26 |
| Avg temp (°C) | 4 | 5 | 9 | 14 | 18 | 21 |
| Avg low (°C) | −2 | −1 | 3 | 8 | 13 | 17 |
| Precipitation (mm) | 82 | 74 | 138 | 133 | 130 | 171 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 32 | 28 | 22 | 18 | 13 |
| Avg temp (°C) | 25 | 27 | 23 | 17 | 12 | 7 |
| Avg low (°C) | 22 | 23 | 19 | 13 | 7 | 1 |
| Precipitation (mm) | 152 | 115 | 237 | 257 | 114 | 71 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 65 | 70 | 69 | 72 | 81 | 74 | 60 | 71 | 72 | 68 | 62 |
| Relative humidity (%) | 75 | 74 | 75 | 77 | 79 | 82 | 83 | 81 | 82 | 82 | 80 | 77 |
| Wind speed (mph) | 6.0 | 6.4 | 6.7 | 6.6 | 5.9 | 5.2 | 5.4 | 5.1 | 5.5 | 5.6 | 5.2 | 5.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 65 | 70 | 69 | 72 | 81 |
| Relative humidity (%) | 75 | 74 | 75 | 77 | 79 | 82 |
| Wind speed (mph) | 6.0 | 6.4 | 6.7 | 6.6 | 5.9 | 5.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 60 | 71 | 72 | 68 | 62 |
| Relative humidity (%) | 83 | 81 | 82 | 82 | 80 | 77 |
| Wind speed (mph) | 5.4 | 5.1 | 5.5 | 5.6 | 5.2 | 5.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Ushiku, about 20 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.