Okinawa weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: June – October
What is the weather like in Okinawa in May?
In May, Okinawa is warm: daytime highs average 24 °C, and even at night it stays warm at around 22 °C. The sea averages 24.6 °C – pleasant for swimming. Expect around 5 hours of sunshine a day. It rains often – on about 15 days, adding up to 226 mm. The air is often humid and muggy. It is often windy, with gusts of around 28 km/h. All in all, May is a good month for a holiday in Okinawa.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 25 min05:42 – 19:07
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 24 daysdew point 18 °C or moreAll months
- Wind
- 28 km/haverage daily peakAll months
- Cloud cover
- 72 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 35 %87 %
- Seaweight 25 %100 %
- Sunshineweight 20 %25 %
- Few rainy daysweight 20 %24 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Insect repellent
- Rain jacket or umbrella
- Windproof jacket
Okinawa in May: quick answers
Is Okinawa hot in May?
Warm rather than hot: in May, daytime highs in Okinawa average 24 °C and nights cool to about 22 °C.
Can you swim in Okinawa in May?
Yes. In May the sea averages 24.6 °C – pleasant for swimming.
Does it rain much in Okinawa in May?
It rains often – on about 15 days, adding up to 226 mm.
Okinawa month by month
The whole year in OkinawaAll destinations: JapanWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences