Iida, Japan climate
Cfa Humid subtropical
Iida has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 89°F, while the coldest is January averaging around 26°F at night. Around 66 inches of precipitation falls each year, peaking in July (9.5 inches) and easing off in January (2.5 inches).
☀️
Summers
Hot
Highs near 89°F in August.
❄️
Winters
Cold
Lows near 26°F in January.
🌧️
Rain
Very wet
About 66 in of rain a year.
Wettest in July
⛅
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)Iida climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 44 | 47 | 54 | 65 | 74 | 80 | 86 | 89 | 81 | 70 | 59 | 48 |
| Avg temp (°F) | 34 | 36 | 43 | 53 | 62 | 69 | 76 | 78 | 71 | 59 | 47 | 38 |
| Avg low (°F) | 26 | 27 | 33 | 43 | 52 | 61 | 69 | 70 | 63 | 51 | 39 | 30 |
| Precipitation (in) | 2.5 | 3.1 | 5.5 | 5.6 | 6.1 | 7.6 | 9.5 | 5.9 | 8.2 | 6.4 | 3.7 | 2.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 44 | 47 | 54 | 65 | 74 | 80 |
| Avg temp (°F) | 34 | 36 | 43 | 53 | 62 | 69 |
| Avg low (°F) | 26 | 27 | 33 | 43 | 52 | 61 |
| Precipitation (in) | 2.5 | 3.1 | 5.5 | 5.6 | 6.1 | 7.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 89 | 81 | 70 | 59 | 48 |
| Avg temp (°F) | 76 | 78 | 71 | 59 | 47 | 38 |
| Avg low (°F) | 69 | 70 | 63 | 51 | 39 | 30 |
| Precipitation (in) | 9.5 | 5.9 | 8.2 | 6.4 | 3.7 | 2.6 |
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 | 86 | 83 | 80 | 80 | 85 | 87 | 86 | 87 | 86 | 86 | 87 |
| Wind speed (mph) | 5.6 | 5.5 | 5.3 | 4.9 | 4.2 | 3.6 | 3.7 | 3.2 | 3.4 | 3.4 | 4.0 | 5.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 58 | 62 | 64 | 69 | 81 |
| Relative humidity (%) | 88 | 86 | 83 | 80 | 80 | 85 |
| Wind speed (mph) | 5.6 | 5.5 | 5.3 | 4.9 | 4.2 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 68 | 71 | 63 | 57 | 57 |
| Relative humidity (%) | 87 | 86 | 87 | 86 | 86 | 87 |
| Wind speed (mph) | 3.7 | 3.2 | 3.4 | 3.4 | 4.0 | 5.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Iida, 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.