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Miyakojima, Japan climate
Af Tropical rainforest
Miyakojima has a mildly seasonal warm-temperate 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 16°C at night. Around 2076 mm of precipitation falls each year, peaking in September (259 mm) and easing off in February (120 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)Miyakojima climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 23 | 25 | 28 | 30 | 32 | 31 | 30 | 28 | 25 | 22 |
| Avg temp (°C) | 18 | 19 | 20 | 23 | 25 | 28 | 29 | 29 | 28 | 26 | 23 | 20 |
| Avg low (°C) | 16 | 17 | 18 | 20 | 23 | 26 | 27 | 27 | 26 | 24 | 21 | 18 |
| Precipitation (mm) | 139 | 120 | 139 | 149 | 222 | 195 | 152 | 257 | 259 | 158 | 140 | 147 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 23 | 25 | 28 | 30 |
| Avg temp (°C) | 18 | 19 | 20 | 23 | 25 | 28 |
| Avg low (°C) | 16 | 17 | 18 | 20 | 23 | 26 |
| Precipitation (mm) | 139 | 120 | 139 | 149 | 222 | 195 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 30 | 28 | 25 | 22 |
| Avg temp (°C) | 29 | 29 | 28 | 26 | 23 | 20 |
| Avg low (°C) | 27 | 27 | 26 | 24 | 21 | 18 |
| Precipitation (mm) | 152 | 257 | 259 | 158 | 140 | 147 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 78 | 76 | 75 | 71 | 66 | 54 | 56 | 59 | 63 | 72 | 79 |
| Relative humidity (%) | 77 | 78 | 80 | 82 | 84 | 87 | 83 | 83 | 81 | 79 | 78 | 76 |
| Wind speed (km/h) | 24.6 | 23.6 | 21.9 | 20.2 | 17.8 | 19.5 | 19.7 | 19.2 | 21.0 | 23.9 | 24.6 | 25.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 78 | 76 | 75 | 71 | 66 |
| Relative humidity (%) | 77 | 78 | 80 | 82 | 84 | 87 |
| Wind speed (km/h) | 24.6 | 23.6 | 21.9 | 20.2 | 17.8 | 19.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 54 | 56 | 59 | 63 | 72 | 79 |
| Relative humidity (%) | 83 | 83 | 81 | 79 | 78 | 76 |
| Wind speed (km/h) | 19.7 | 19.2 | 21.0 | 23.9 | 24.6 | 25.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Miyakojima, about 3 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.