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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 32°C, while the coldest is January averaging around 17°C at night. Around 2095 mm of precipitation falls each year, peaking in September (260 mm) and easing off in February (124 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)Ishigaki climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 24 | 26 | 29 | 31 | 32 | 32 | 31 | 29 | 26 | 23 |
| Avg temp (°C) | 19 | 19 | 21 | 23 | 26 | 28 | 30 | 29 | 28 | 26 | 24 | 21 |
| Avg low (°C) | 17 | 17 | 19 | 21 | 24 | 27 | 28 | 27 | 26 | 24 | 22 | 18 |
| Precipitation (mm) | 135 | 124 | 134 | 147 | 191 | 208 | 142 | 250 | 260 | 211 | 138 | 155 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 24 | 26 | 29 | 31 |
| Avg temp (°C) | 19 | 19 | 21 | 23 | 26 | 28 |
| Avg low (°C) | 17 | 17 | 19 | 21 | 24 | 27 |
| Precipitation (mm) | 135 | 124 | 134 | 147 | 191 | 208 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 31 | 29 | 26 | 23 |
| Avg temp (°C) | 30 | 29 | 28 | 26 | 24 | 21 |
| Avg low (°C) | 28 | 27 | 26 | 24 | 22 | 18 |
| Precipitation (mm) | 142 | 250 | 260 | 211 | 138 | 155 |
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 (m/s) | 6.8 | 6.5 | 6.0 | 5.5 | 4.9 | 5.5 | 5.5 | 5.3 | 5.8 | 6.7 | 6.8 | 7.2 |
| 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 (m/s) | 6.8 | 6.5 | 6.0 | 5.5 | 4.9 | 5.5 |
| 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 (m/s) | 5.5 | 5.3 | 5.8 | 6.7 | 6.8 | 7.2 |
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.