Weather in Oahu Island, United States in May

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Visiting Oahu Island, United States in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise slightly into June. May has average maximum temperatures of 27°C (81°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 53.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day. It is a good time for sunbathing in Oahu Island.

May has total rainfall of 6.1cm (2.4inches) making it mostly dry with only intermittent light showers. There are only 14.4 days with some rainfall so you can still enjoy the beach on the majority of days.

Sea temperatures are a very warm 26°C (79°F). May is an excellent month for swimming in Oahu Island with very comfortable temperatures for bathing all day. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Consider visiting Oahu Island in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for May.

Can you sunbathe in Oahu Island in May?

Yes, May is a good time for sunbathing in Oahu Island.

May has average maximum temperatures of 27°C (81°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 53.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day. May has total rainfall of 6.1cm (2.4inches) making it mostly dry with only intermittent light showers. There are only 14.4 days with some rainfall so you can still enjoy the beach on the majority of days.

More about May temperature and sunshine.

Can you swim in Oahu Island in May?

Yes, May is an excellent month for swimming in Oahu Island with very warm sea temperatures 26°C (79°F).

More about May sea temperatures.

Is May a good time to holiday in Oahu Island?

Yes, May is a good time for a holiday in Oahu Island.

May has average maximum temperatures of 27°C (81°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 53.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day. May has total rainfall of 6.1cm (2.4inches) making it mostly dry with only intermittent light showers. There are only 14.4 days with some rainfall so you can still enjoy the beach on the majority of days. It is a good time for sunbathing in Oahu Island. Sea temperatures are a very warm 26°C (79°F). May is an excellent month for swimming in Oahu Island with very comfortable temperatures for bathing all day.

More about the May temperatures and sunshine.

Is Oahu Island warm in May?

Yes, Oahu Island is very warm and perfect for sunbathing on clear days in May.

The average maximum temperature in Oahu Island in May is 27°C (81°F). The average maximum temperature is 26°C (79°) in the previous month and 28°C (83°F) in the next month.

The average temperature in Oahu Island in May is 24°C (75°F). The average temperature is 23°C (73°F) in the previous month and 25°C (77°F) in the next month.

More info about the May temperatures and sunshine.

How sunny is Oahu Island in May?

The average day light hours per day in Oahu Island in May are 13.2. The sunshine percentage is 53.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day.

More about May sunshine.

Temperature in Oahu Island in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise slightly into June. The average maximum temperature in Oahu Island in May is 27°C (81°F). The average maximum temperature is 26°C (79°F) in the previous month and 28°C (83°F) in the next month.

The average temperature in Oahu Island in May is 24°C (75°F). The average temperature is 23°C (73°F) in the previous month and 25°C (77°F) in the next month.

The average minimum temperature in Oahu Island in May is 21°C (69°F). The minimum temperature is 20°C (67°F) in the previous month and 22°C (71°F) in the next month.

Sunshine in Oahu Island in May

The days in May are longer than the previous month and the days continue to get marginally longer into June. May has marginally more hours of sunshine than the previous month and hours of sunshine continue to rise slightly into June. During May the average day light hours are 13.2 per day in Oahu Island. The sunshine percentage is 53.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.1 hours of sunshine per day.

The ultraviolet index in Oahu Island 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 Oahu Island in May

The average sea water temperature in Oahu Island in May is 25.9°C (78.6°F) which is warm and pleasant for relaxing and swimming for long periods. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Rainfall in Oahu Island in May

May weather is marginally drier than the previous month and rainfall continues to drop into June. May has fewer days of rain than the previous month. The average total rainfall in Oahu Island in May is 6.1cm (2.4inches) and on average there are 14.4 rainy days in May making it a pretty wet time to visit the beach.

Humidity in Oahu Island in May

The maximum dew point (an indicator of humidity) in Oahu Island in May is 20°C (68°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 19°C (66°F) in the previous month and 20°C (20°F) in the next month.

The average maximum relative humidity in Oahu Island in May is typically 85.9%. The maximum relative humidity is 85.7% in the previous month and 84.3% in the next month.

The average relative humidity in Oahu Island in May is typically 72.5%. The average relative humidity is 72.7% in the previous month and 71.1% in the next month.

Wind Speed in Oahu Island in May

The average maximum wind speed in Oahu Island in May is typically 26KM/H (16MPH). The average maximum wind speed is 28KM/H (17MPH) in the previous month and 29KM/H (18MPH) in the next month.

The average wind speed in Oahu Island in May is typically 14KM/H (9MPH). The average wind speed is 15KM/H (10MPH) in the previous month and 16KM/H (10MPH) in the next month.

The average wind direction in Oahu Island in May is from the East-Northeast.

Monthly Averages

Suggested Beaches in May

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.