Ina, Japan climate
Cfa Humid subtropical
Ina has a seasonal cool-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 −6°C at night. Around 1487 mm of precipitation falls each year, peaking in July (194 mm) and easing off in January (49 mm).
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Summers
Warm
Highs near 30°C in August.
❄️
Winters
Cold
Lows near −6°C in January.
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Rain
Wet
About 1487 mm of rain a year.
Wettest in July
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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)Ina climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 7 | 11 | 17 | 23 | 25 | 29 | 30 | 26 | 20 | 14 | 8 |
| Avg temp (°C) | −1 | 0 | 4 | 10 | 16 | 20 | 23 | 24 | 20 | 14 | 7 | 2 |
| Avg low (°C) | −6 | −5 | −2 | 4 | 10 | 15 | 19 | 20 | 15 | 8 | 2 | −3 |
| Precipitation (mm) | 49 | 70 | 121 | 125 | 144 | 185 | 194 | 132 | 170 | 149 | 90 | 57 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 7 | 11 | 17 | 23 | 25 |
| Avg temp (°C) | −1 | 0 | 4 | 10 | 16 | 20 |
| Avg low (°C) | −6 | −5 | −2 | 4 | 10 | 15 |
| Precipitation (mm) | 49 | 70 | 121 | 125 | 144 | 185 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 26 | 20 | 14 | 8 |
| Avg temp (°C) | 23 | 24 | 20 | 14 | 7 | 2 |
| Avg low (°C) | 19 | 20 | 15 | 8 | 2 | −3 |
| Precipitation (mm) | 194 | 132 | 170 | 149 | 90 | 57 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 58 | 62 | 64 | 69 | 81 | 77 | 68 | 71 | 63 | 57 | 57 |
| Relative humidity (%) | 88 | 85 | 80 | 76 | 75 | 80 | 83 | 82 | 84 | 85 | 85 | 86 |
| Wind speed (mph) | 5.6 | 5.8 | 5.7 | 5.3 | 4.4 | 3.6 | 3.7 | 3.2 | 3.4 | 3.6 | 4.3 | 5.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 58 | 62 | 64 | 69 | 81 |
| Relative humidity (%) | 88 | 85 | 80 | 76 | 75 | 80 |
| Wind speed (mph) | 5.6 | 5.8 | 5.7 | 5.3 | 4.4 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 68 | 71 | 63 | 57 | 57 |
| Relative humidity (%) | 83 | 82 | 84 | 85 | 85 | 86 |
| Wind speed (mph) | 3.7 | 3.2 | 3.4 | 3.6 | 4.3 | 5.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Ina, inside the city.
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.