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 86°F, while the coldest is January averaging around 21°F at night. Around 59 inches of precipitation falls each year, peaking in July (7.7 inches) and easing off in January (1.9 inches).
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Summers
Warm
Highs near 86°F in August.
❄️
Winters
Cold
Lows near 21°F in January.
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Rain
Wet
About 59 in 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 (°F) | 41 | 44 | 52 | 63 | 73 | 78 | 83 | 86 | 78 | 68 | 57 | 46 |
| Avg temp (°F) | 31 | 33 | 40 | 51 | 61 | 67 | 74 | 75 | 68 | 56 | 45 | 35 |
| Avg low (°F) | 21 | 22 | 29 | 38 | 50 | 59 | 66 | 67 | 60 | 47 | 35 | 26 |
| Precipitation (in) | 1.9 | 2.8 | 4.8 | 4.9 | 5.7 | 7.3 | 7.7 | 5.2 | 6.7 | 5.9 | 3.5 | 2.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 41 | 44 | 52 | 63 | 73 | 78 |
| Avg temp (°F) | 31 | 33 | 40 | 51 | 61 | 67 |
| Avg low (°F) | 21 | 22 | 29 | 38 | 50 | 59 |
| Precipitation (in) | 1.9 | 2.8 | 4.8 | 4.9 | 5.7 | 7.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 83 | 86 | 78 | 68 | 57 | 46 |
| Avg temp (°F) | 74 | 75 | 68 | 56 | 45 | 35 |
| Avg low (°F) | 66 | 67 | 60 | 47 | 35 | 26 |
| Precipitation (in) | 7.7 | 5.2 | 6.7 | 5.9 | 3.5 | 2.3 |
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.