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Ishigaki, Japan climate
Af Tropical rainforest
Ishigaki has a mildly seasonal tropical climate (Tropical rainforest, Köppen Af). The hottest month is July with an average daily high near 90°F, while the coldest is January averaging around 62°F at night. Around 82 inches of precipitation falls each year, peaking in September (10.2 inches) and easing off in February (4.9 inches).
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)Ishigaki climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 71 | 72 | 75 | 79 | 84 | 88 | 90 | 90 | 88 | 84 | 79 | 73 |
| Avg temp (°F) | 66 | 67 | 70 | 74 | 79 | 83 | 85 | 85 | 83 | 79 | 74 | 69 |
| Avg low (°F) | 62 | 63 | 65 | 70 | 75 | 80 | 82 | 81 | 79 | 75 | 71 | 65 |
| Precipitation (in) | 5.3 | 4.9 | 5.3 | 5.8 | 7.5 | 8.2 | 5.6 | 9.8 | 10.2 | 8.3 | 5.4 | 6.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 71 | 72 | 75 | 79 | 84 | 88 |
| Avg temp (°F) | 66 | 67 | 70 | 74 | 79 | 83 |
| Avg low (°F) | 62 | 63 | 65 | 70 | 75 | 80 |
| Precipitation (in) | 5.3 | 4.9 | 5.3 | 5.8 | 7.5 | 8.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 90 | 90 | 88 | 84 | 79 | 73 |
| Avg temp (°F) | 85 | 85 | 83 | 79 | 74 | 69 |
| Avg low (°F) | 82 | 81 | 79 | 75 | 71 | 65 |
| Precipitation (in) | 5.6 | 9.8 | 10.2 | 8.3 | 5.4 | 6.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 84 | 80 | 78 | 77 | 73 | 69 | 54 | 56 | 60 | 66 | 75 | 82 |
| Relative humidity (%) | 77 | 79 | 80 | 82 | 84 | 86 | 83 | 82 | 81 | 79 | 78 | 76 |
| Wind speed (mph) | 15.2 | 14.5 | 13.4 | 12.3 | 11.0 | 12.3 | 12.3 | 11.8 | 13.0 | 14.9 | 15.2 | 16.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 84 | 80 | 78 | 77 | 73 | 69 |
| Relative humidity (%) | 77 | 79 | 80 | 82 | 84 | 86 |
| Wind speed (mph) | 15.2 | 14.5 | 13.4 | 12.3 | 11.0 | 12.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 54 | 56 | 60 | 66 | 75 | 82 |
| Relative humidity (%) | 83 | 82 | 81 | 79 | 78 | 76 |
| Wind speed (mph) | 12.3 | 11.8 | 13.0 | 14.9 | 15.2 | 16.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Ishigakijima, about 1 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.