Weather in Hilo, Hawaii Island, United States in May

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Visiting Hilo, Hawaii Island, United States in May

May is one of the best months to visit Hilo for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

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 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.1hrs making the days long and bright.

May has total rainfall of 15.3cm (6.0inches) making it a bit rainy but with only moderate tropical showers. There are 15.4 days with some rainfall so you can still enjoy the beach on the clear days.

Sea temperatures are a very warm 25°C (77°F). May is an excellent month for swimming in Hilo 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.

May marks the beginning of the dry season in Hilo, with more sunny days and less rain. The ocean remains calm, making it ideal for swimming, snorkeling, and other water activities. Surfing conditions continue to improve, and windsurfing and kitesurfing remain popular. Also consider visiting Hilo in one of the other best months of June, July, September, for the best beach weather. Also consider one of our other suggestions for May.

Can you sunbathe in Hilo in May?

Yes, May is a good time for sunbathing in Hilo.

May has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.1hrs making the days long and bright. May has total rainfall of 15.3cm (6.0inches) making it a bit rainy but with only moderate tropical showers. There are 15.4 days with some rainfall so you can still enjoy the beach on the clear days.

More about May temperature and sunshine.

Can you swim in Hilo in May?

Yes, May is an excellent month for swimming in Hilo with very warm sea temperatures 25°C (77°F).

More about May sea temperatures.

Is May a good time to holiday in Hilo?

Yes, May is a good time for a holiday in Hilo.

May has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.1hrs making the days long and bright. May has total rainfall of 15.3cm (6.0inches) making it a bit rainy but with only moderate tropical showers. There are 15.4 days with some rainfall so you can still enjoy the beach on the clear days. Sea temperatures are a very warm 25°C (77°F). May is an excellent month for swimming in Hilo with very comfortable temperatures for bathing all day.

More about the May temperatures and sunshine.

Is Hilo warm in May?

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

The average maximum temperature in Hilo in May is 28°C (82°F). The average maximum temperature is 26°C (80°) in the previous month and 28°C (82°F) in the next month.

The average temperature in Hilo in May is 24°C (74°F). The average temperature is 23°C (73°F) in the previous month and 24°C (75°F) in the next month.

More info about the May temperatures and sunshine.

How sunny is Hilo in May?

The average day light hours per day in Hilo in May are 13.1. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.1hrs making the days long and bright.

More about May sunshine.

Crowds in Hilo in May

May brings warmer weather and the start of the peak tourist season. The beaches can become more crowded, especially during Memorial Day weekend. Visitors should expect busier beaches during this month.

Temperature in Hilo 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 Hilo in May is 28°C (82°F). The average maximum temperature is 26°C (80°F) in the previous month and 28°C (82°F) in the next month.

The average temperature in Hilo in May is 24°C (74°F). The average temperature is 23°C (73°F) in the previous month and 24°C (75°F) in the next month.

The average minimum temperature in Hilo in May is 19°C (67°F). The minimum temperature is 19°C (65°F) in the previous month and 20°C (68°F) in the next month.

Sunshine in Hilo in May

The days in May are marginally longer than the previous month and the days continue to get marginally longer into June. May has slightly less hours of sunshine than the previous month. During May the average day light hours are 13.1 per day in Hilo. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.1hrs making the days long and bright.

The ultraviolet index in Hilo in May is typically 12.8 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 Hilo in May

The average sea water temperature in Hilo in May is 25.1°C (77.2°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 Hilo in May

May weather is 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 Hilo in May is 15.3cm (6.0inches) and on average there are 15.4 rainy days in May making it a wet time to visit the beach.

Humidity in Hilo in May

The maximum dew point (an indicator of humidity) in Hilo in May is 20°C (67°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 19°C (67°F) in the previous month and 20°C (20°F) in the next month.

The average maximum relative humidity in Hilo in May is typically 89.8%. The maximum relative humidity is 91% in the previous month and 90.2% in the next month.

The average relative humidity in Hilo in May is typically 74.3%. The average relative humidity is 76.4% in the previous month and 75% in the next month.

Wind Speed in Hilo in May

The average maximum wind speed in Hilo in May is typically 25KM/H (16MPH). The average maximum wind speed is 26KM/H (16MPH) in the previous month and 24KM/H (15MPH) in the next month.

The average wind speed in Hilo in May is typically 10KM/H (6MPH). The average wind speed is 10KM/H (6MPH) in the previous month and 10KM/H (6MPH) in the next month.

The average wind direction in Hilo in May is from the South-Southwest.

Monthly Averages

Suggested Beaches in May

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