Iwade, Japan climate
Cfa Humid subtropical
Iwade 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 1341 mm of precipitation falls each year, peaking in June (168 mm) and easing off in January (51 mm).
☀️
Summers
Hot
Highs near 32°C in August.
❄️
Winters
Chilly
Lows near 2°C in January.
🌧️
Rain
Wet
About 1341 mm of rain a year.
Wettest in June
⛅
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)Iwade climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 19 | 24 | 27 | 31 | 32 | 28 | 23 | 17 | 12 |
| Avg temp (°C) | 5 | 6 | 9 | 14 | 19 | 22 | 27 | 28 | 24 | 18 | 13 | 8 |
| Avg low (°C) | 2 | 2 | 4 | 9 | 14 | 19 | 23 | 24 | 20 | 14 | 9 | 4 |
| Precipitation (mm) | 51 | 63 | 107 | 102 | 138 | 168 | 162 | 98 | 158 | 151 | 84 | 60 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 19 | 24 | 27 |
| Avg temp (°C) | 5 | 6 | 9 | 14 | 19 | 22 |
| Avg low (°C) | 2 | 2 | 4 | 9 | 14 | 19 |
| Precipitation (mm) | 51 | 63 | 107 | 102 | 138 | 168 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 28 | 23 | 17 | 12 |
| Avg temp (°C) | 27 | 28 | 24 | 18 | 13 | 8 |
| Avg low (°C) | 23 | 24 | 20 | 14 | 9 | 4 |
| Precipitation (mm) | 162 | 98 | 158 | 151 | 84 | 60 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 69 | 67 | 65 | 69 | 80 | 74 | 63 | 70 | 66 | 66 | 69 |
| Relative humidity (%) | 84 | 81 | 80 | 78 | 80 | 83 | 85 | 84 | 84 | 84 | 84 | 84 |
| Wind speed (km/h) | 7.7 | 8.0 | 8.2 | 7.5 | 6.5 | 5.7 | 5.6 | 5.4 | 5.8 | 6.1 | 6.2 | 7.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 69 | 67 | 65 | 69 | 80 |
| Relative humidity (%) | 84 | 81 | 80 | 78 | 80 | 83 |
| Wind speed (km/h) | 7.7 | 8.0 | 8.2 | 7.5 | 6.5 | 5.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 63 | 70 | 66 | 66 | 69 |
| Relative humidity (%) | 85 | 84 | 84 | 84 | 84 | 84 |
| Wind speed (km/h) | 5.6 | 5.4 | 5.8 | 6.1 | 6.2 | 7.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kumatori, about 15 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.