Okinawa has a subtropical climate with temperature and precipitation variations influenced by the summer monsoon and ocean currents. The best time of the year to go to Okinawa is from May to November.
Spring in Okinawa, often known as the cherry blossom season, is mild and pleasant, with average temperatures of 21°C (69°F). Rainfall increases slightly, but there are still a lot of sunny days. Summer is hot and humid, with an average temperature of 28°C (82°F). It is also the typhoon season, especially in September.
Autumn is mild, with average temperatures of 24°C (75°F) and much less rain. October is the best month of the year to scuba dive in Okinawa. Knowing what the average temperatures and the number of rainy days will be at the time of your trip will help you determine if this is the best time to dive in Okinawa.
Okinawa weather
You will find below, month by month, the average weather conditions in the main island of Okinawa (the main weather forecast station is Naha):
Okinawa average temperatures
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec | |
| max | 19°C 66°F | 19°C 66°F | 21°C 69°F | 22°C 71°F | 25°C 77°F | 27°C 80°F | 29°C 84°F | 29°C 84°F | 29°C 84°F | 26°C 79°F | 24°C 75°F | 20°C 68°F |
| min | 16°C 60°F | 17°C 62°F | 18°C 64°F | 20°C 68°F | 23°C 73°F | 26°C 79°F | 28°C 82°F | 27°C 80°F | 27°C 80°F | 25°C 77°F | 22°C 71°F | 18°C 64°F |
Okinawa average number of rainy days
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec |
| 7 | 7 | 8 | 9 | 12 | 14 | 9 | 11 | 9 | 7 | 7 | 8 |
Okinawa weather data source: weatherspark.com
Ishigaki weather
You will find below, month by month, the average weather conditions in Ishigaki Island (the main weather forecast station is Ishigaki Airport):
Ishigaki average temperatures
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec | |
| max | 21°C 69°F | 21°C 69°F | 22°C 71°F | 24°C 75°F | 26°C 79°F | 28°C 82°F | 29°C 84°F | 29°C 84°F | 29°C 84°F | 27°C 80°F | 25°C 77°F | 22°C 71°F |
| min | 18°C 64°F | 19°C 66°F | 20°C 68°F | 22°C 71°F | 25°C 77°F | 27°C 80°F | 28°C 82°F | 28°C 82°F | 28°C 82°F | 26°C 79°F | 23°C 73°F | 20°C 68°F |
Ishigaki average number of rainy days
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec |
| 9 | 8 | 7 | 8 | 12 | 12 | 10 | 14 | 10 | 8 | 10 | 10 |
Okinawa weather data source: weatherspark.com
Yonaguni weather
You will find below, month by month, the average weather conditions in Yonaguni Island (the main weather forecast station is Yonaguni Airport):
Yonaguni average temperatures
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec | |
| max | 20°C 68°F | 21°C 69°F | 22°C 71°F | 24°C 75°F | 26°C 79°F | 28°C 82°F | 29°C 84°F | 29°C 84°F | 28°C 82°F | 28°C 82°F | 25°C 77°F | 22°C 71°F |
| min | 18°C 64°F | 19°C 66°F | 20°C 68°F | 22°C 71°F | 25°C 77°F | 27°C 80°F | 28°C 82°F | 28°C 82°F | 27°C 80°F | 25°C 77°F | 23°C 73°F | 20°C 68°F |
Yonaguni average number of rainy days
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec |
| 11 | 11 | 10 | 9 | 13 | 13 | 10 | 13 | 11 | 10 | 12 | 12 |
Okinawa weather data source: weatherspark.com
Other factors, of course, such as the water temperature, can have an impact on when you are booking your trip to scuba dive in Okinawa. In this case, it is better to check Okinawa water temperature information.