Weather in Okinawa Prefecture, Japan in May

So you're interested in going to Okinawa Prefecture, Japan in May

May is a hot and rainy time for sunbathing in Okinawa Prefecture. May is a good month for swimming in Okinawa Prefecture with warm sea temperatures. Consider visiting Okinawa Prefecture in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for May.

Temperature in Okinawa Prefecture in May

The average maximum temperature in Okinawa Prefecture in May is 27°. The average maximum temperature is 24° in the previous month and 30° in the next month.

The average temperature in Okinawa Prefecture in May is 25°. The average temperature ranges is 22° in the previous month and 28° in the next month.

The average minimum temperature in Okinawa Prefecture in May is 23°. The minimum temperature is 20° in the previous month and 26° in the next month.

Sunshine in Okinawa Prefecture in May

The average day light hours per day in Okinawa Prefecture in May are 13.3 and there are 7.3 hours of sunshine per day on average during May making it a quite sunny month with some cloud cover.

The ultraviolet index in Okinawa Prefecture in May is typically 12.6 during May. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Okinawa Prefecture in May

The average sea water temperature in Okinawa Prefecture in May is 24.6° which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in Okinawa Prefecture in May

The average total rainfall in Okinawa Prefecture in May is 5.5cm and on average there are 16.3 rainy days in May making it a wet time to visit the beach.

Humidity in Okinawa Prefecture in May

The maximum dew point (an indicator of humidity) in Okinawa Prefecture in May is 23° which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan. The dew point is 19° in the previous month and 25° in the next month.

The average maximum relative humidity in Okinawa Prefecture in May is typically 90%. The maximum relative humidity is 86% in the previous month and 91.2% in the next month.

The average relative humidity in Okinawa Prefecture in May is typically 79.6%. The average relative humidity is 75% in the previous month and 82.1% in the next month.

Wind Speed in Okinawa Prefecture in May

The average maximum wind speed in Okinawa Prefecture in May is typically 25kmh. The average maximum wind speed is 27kmh in the previous month and 28kmh in the next month.

The average wind speed in Okinawa Prefecture in May is typically 16kmh. The average wind speed is 18kmh in the previous month and 19kmh in the next month.

The average wind direction in Okinawa Prefecture in May is from the East-Southeast.

Monthly Averages

Suggested Beaches in May

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