Weather in Hapuna Beach State Park, Hawaii Island, United States in September

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Visiting Hapuna Beach State Park, Hawaii Island, United States in September

September is one of the best months to visit Hapuna Beach State Park for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

September has average maximum temperatures of 30°C (85°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day. September has total rainfall of 1.1cm (0.4inches) making it predominantly dry with occasional light showers on very few days. There are just 7.4 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days. Sea temperatures are a very warm 27°C (81°F). September is an excellent month for swimming in Hapuna Beach State Park with very comfortable temperatures for bathing all day.

Also consider visiting Hapuna Beach State Park in one of the other best months of July, August, October, for the best beach weather.

September sees the weather remain warm and sunny, making it a great time for sunbathing. The ocean conditions are suitable for swimming, snorkeling, and diving. Surfing, windsurfing, and kitesurfing may be possible on some days, but the waves can still be inconsistent. Beach activities continue to be popular during this month. Also consider one of our other suggestions for September.

Can you sunbathe in Hapuna Beach State Park in September?

Yes, September is a good time for sunbathing in Hapuna Beach State Park.

September has average maximum temperatures of 30°C (85°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day. September has total rainfall of 1.1cm (0.4inches) making it predominantly dry with occasional light showers on very few days. There are just 7.4 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.

More about September temperature and sunshine.

Can you swim in Hapuna Beach State Park in September?

Yes, September is an excellent month for swimming in Hapuna Beach State Park with very warm sea temperatures 27°C (81°F).

More about September sea temperatures.

Is September a good time to holiday in Hapuna Beach State Park?

Yes, September is a great time for a holiday in Hapuna Beach State Park.

September has average maximum temperatures of 30°C (85°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day. September has total rainfall of 1.1cm (0.4inches) making it predominantly dry with occasional light showers on very few days. There are just 7.4 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days. Sea temperatures are a very warm 27°C (81°F). September is an excellent month for swimming in Hapuna Beach State Park with very comfortable temperatures for bathing all day.

More about the September temperatures and sunshine.

Is Hapuna Beach State Park warm in September?

Yes, Hapuna Beach State Park is very warm and perfect for sunbathing on clear days in September.

The average maximum temperature in Hapuna Beach State Park in September is 30°C (85°F). The average maximum temperature is 30°C (85°) in the previous month and 29°C (85°F) in the next month.

The average temperature in Hapuna Beach State Park in September is 27°C (80°F). The average temperature is 27°C (80°F) in the previous month and 27°C (80°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Hapuna Beach State Park in September?

The average day light hours per day in Hapuna Beach State Park in September are 12.3. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day.

More about September sunshine.

Crowds in Hapuna Beach State Park in September

September sees a decrease in visitors at Hapuna Beach State Park, as many people return to school and work after the summer holidays. The weather is still warm and pleasant, but the beach is not as crowded as the peak summer months. Labor Day weekend can be busier, but overall, the beach is less crowded during September.

Temperature in Hapuna Beach State Park in September

The average maximum temperature in Hapuna Beach State Park in September is 30°C (85°F). The average maximum temperature is 30°C (85°F) in the previous month and 29°C (85°F) in the next month.

The average temperature in Hapuna Beach State Park in September is 27°C (80°F). The average temperature is 27°C (80°F) in the previous month and 27°C (80°F) in the next month.

The average minimum temperature in Hapuna Beach State Park in September is 24°C (75°F). The minimum temperature is 24°C (75°F) in the previous month and 24°C (74°F) in the next month.

Sunshine in Hapuna Beach State Park in September

During September the average day light hours are 12.3 per day in Hapuna Beach State Park. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day.

The ultraviolet index in Hapuna Beach State Park in September is typically 12.4 during September. 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 Hapuna Beach State Park in September

The average sea water temperature in Hapuna Beach State Park in September is 27.1°C (80.8°F) which is very warm and ideal for relaxing and swimming for the whole day.

Rainfall in Hapuna Beach State Park in September

The average total rainfall in Hapuna Beach State Park in September is 1.1cm (0.4inches) and on average there are 7.4 rainy days in September making it a quite rainy time to visit the beach.

Humidity in Hapuna Beach State Park in September

The maximum dew point (an indicator of humidity) in Hapuna Beach State Park in September is 21°C (70°F) 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 21°C (71°F) in the previous month and 21°C (21°F) in the next month.

The average maximum relative humidity in Hapuna Beach State Park in September is typically 75.8%. The maximum relative humidity is 76.7% in the previous month and 76.7% in the next month.

The average relative humidity in Hapuna Beach State Park in September is typically 64.8%. The average relative humidity is 65.5% in the previous month and 66.2% in the next month.

Wind Speed in Hapuna Beach State Park in September

The average maximum wind speed in Hapuna Beach State Park in September is typically 22KM/H (14MPH). The average maximum wind speed is 23KM/H (15MPH) in the previous month and 22KM/H (13MPH) in the next month.

The average wind speed in Hapuna Beach State Park in September is typically 11KM/H (7MPH). The average wind speed is 11KM/H (7MPH) in the previous month and 10KM/H (6MPH) in the next month.

The average wind direction in Hapuna Beach State Park in September is from the South.

Monthly Averages

Suggested Beaches in September

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