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Ibusuki, Japan climate
Cfa Humid subtropical
Ibusuki has a seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 33°C, while the coldest is January averaging around 5°C at night. Precipitation totals about 2602 mm a year and is strongly seasonal — June alone averages 592 mm while January barely receives 93 mm.
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)Ibusuki climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 15 | 18 | 22 | 26 | 28 | 32 | 33 | 30 | 26 | 20 | 15 |
| Avg temp (°C) | 9 | 10 | 13 | 17 | 20 | 24 | 28 | 28 | 26 | 21 | 16 | 11 |
| Avg low (°C) | 5 | 5 | 8 | 12 | 16 | 20 | 24 | 25 | 22 | 17 | 11 | 7 |
| Precipitation (mm) | 93 | 133 | 192 | 232 | 238 | 592 | 353 | 204 | 239 | 107 | 120 | 98 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 15 | 18 | 22 | 26 | 28 |
| Avg temp (°C) | 9 | 10 | 13 | 17 | 20 | 24 |
| Avg low (°C) | 5 | 5 | 8 | 12 | 16 | 20 |
| Precipitation (mm) | 93 | 133 | 192 | 232 | 238 | 592 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 33 | 30 | 26 | 20 | 15 |
| Avg temp (°C) | 28 | 28 | 26 | 21 | 16 | 11 |
| Avg low (°C) | 24 | 25 | 22 | 17 | 11 | 7 |
| Precipitation (mm) | 353 | 204 | 239 | 107 | 120 | 98 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 69 | 67 | 71 | 83 | 66 | 60 | 62 | 56 | 61 | 68 |
| Relative humidity (%) | 77 | 76 | 75 | 76 | 79 | 85 | 86 | 83 | 80 | 77 | 76 | 77 |
| Wind speed (mph) | 9.7 | 9.7 | 9.5 | 8.8 | 8.0 | 8.3 | 7.9 | 8.2 | 7.8 | 7.9 | 8.0 | 9.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 69 | 67 | 71 | 83 |
| Relative humidity (%) | 77 | 76 | 75 | 76 | 79 | 85 |
| Wind speed (mph) | 9.7 | 9.7 | 9.5 | 8.8 | 8.0 | 8.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 60 | 62 | 56 | 61 | 68 |
| Relative humidity (%) | 86 | 83 | 80 | 77 | 76 | 77 |
| Wind speed (mph) | 7.9 | 8.2 | 7.8 | 7.9 | 8.0 | 9.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Ibusuki, about 2 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.