Weather in South Beach State Park, Marthas Vineyard, United States in September

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Visiting South Beach State Park, Marthas Vineyard, United States in September

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

The weather in September is cooler than the previous month and temperatures continue to drop markedly into October. September has average maximum temperatures of 23°C (73°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 49% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day.

September has total rainfall of 9.7cm (3.8inches) making it mostly dry with only intermittent light showers. There are only 11.4 days with some rainfall so you can still enjoy the beach on the majority of days.

Sea temperatures are a cold 16°C (60°F). September is too cold for swimming in South Beach State Park for any length of time, unless you have a wetsuit. The sea temperature in September is cooler than the previous month and temperatures continue to drop into October.

September is a pleasant month for beach activities, with warm weather and sunny days. Swimming, sunbathing, and water sports such as snorkeling, diving, surfing, windsurfing, and kitesurfing are still recommended during this month due to the warm sea temperatures and good conditions. Also consider visiting South Beach State Park in one of the other best months of June, July, August, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in South Beach State Park in September?

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

September has average maximum temperatures of 23°C (73°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 49% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day. September has total rainfall of 9.7cm (3.8inches) making it mostly dry with only intermittent light showers. There are only 11.4 days with some rainfall so you can still enjoy the beach on the majority of days.

More about September temperature and sunshine.

Can you swim in South Beach State Park in September?

No, September is too cold for swimming in South Beach State Park for any length of time, with the sea water at 16°C (60°F), unless you have a wetsuit.

More about September sea temperatures.

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

Yes, September is a good time for a holiday in South Beach State Park.

September has average maximum temperatures of 23°C (73°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 49% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day. September has total rainfall of 9.7cm (3.8inches) making it mostly dry with only intermittent light showers. There are only 11.4 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a cold 16°C (60°F). September is too cold for swimming in South Beach State Park for any length of time, unless you have a wetsuit.

More about the September temperatures and sunshine.

Is South Beach State Park warm in September?

Yes, South Beach State Park is nice and warm and makes sunbathing pleasant on clear days in September.

The average maximum temperature in South Beach State Park in September is 23°C (73°F). The average maximum temperature is 26°C (79°) in the previous month and 18°C (64°F) in the next month.

The average temperature in South Beach State Park in September is 17°C (63°F). The average temperature is 21°C (69°F) in the previous month and 12°C (54°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is South Beach State Park in September?

The average day light hours per day in South Beach State Park in September are 12.5. The sunshine percentage is 49% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day.

More about September sunshine.

Crowds in South Beach State Park in September

In September, the crowds at South Beach State Park start to decrease as the summer season comes to an end. The weather is still warm, but with school back in session, the beach is less crowded than during the peak summer months. Labor Day weekend can still be quite busy, but overall, the beach is less crowded in September.

Temperature in South Beach State Park in September

The weather in September is cooler than the previous month and temperatures continue to drop markedly into October. The average maximum temperature in South Beach State Park in September is 23°C (73°F). The average maximum temperature is 26°C (79°F) in the previous month and 18°C (64°F) in the next month.

The average temperature in South Beach State Park in September is 17°C (63°F). The average temperature is 21°C (69°F) in the previous month and 12°C (54°F) in the next month.

The average minimum temperature in South Beach State Park in September is 12°C (53°F). The minimum temperature is 16°C (60°F) in the previous month and 8°C (46°F) in the next month.

Sunshine in South Beach State Park in September

The days in September are shorter than the previous month and days continue to get shorter into October. September has less hours of sunshine than the previous month and hours of sunshine continue to drop slightly into October. During September the average day light hours are 12.5 per day in South Beach State Park. The sunshine percentage is 49% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day.

The ultraviolet index in South Beach State Park in September is typically 6.4 during September. An ultraviolet index reading of 6 to 7 indicates a high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 20 minutes. Protection against skin and eye damage is needed. Tanning will be safest before 10am and after 4pm. 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 South Beach State Park in September

The average sea water temperature in South Beach State Park in September is 15.8°C (60.4°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in September is cooler than the previous month and temperatures continue to drop into October.

Rainfall in South Beach State Park in September

September weather is wetter than the previous month and rainfall continues to rise slightly into October. September has fewer days of rain than the previous month. The average total rainfall in South Beach State Park in September is 9.7cm (3.8inches) and on average there are 11.4 rainy days in September making it a pretty wet time to visit the beach.

Humidity in South Beach State Park in September

The maximum dew point (an indicator of humidity) in South Beach State Park in September is 17°C (62°F) which is OK for most but slightly uncomfortable for some. The dew point is 19°C (67°F) in the previous month and 12°C (12°F) in the next month.

The average maximum relative humidity in South Beach State Park in September is typically 94.4%. The maximum relative humidity is 95.3% in the previous month and 91.5% in the next month.

The average relative humidity in South Beach State Park in September is typically 79.1%. The average relative humidity is 81.2% in the previous month and 76.2% in the next month.

Wind Speed in South Beach State Park in September

The average maximum wind speed in South Beach State Park in September is typically 25KM/H (16MPH). The average maximum wind speed is 23KM/H (14MPH) in the previous month and 28KM/H (18MPH) in the next month.

The average wind speed in South Beach State Park in September is typically 12KM/H (8MPH). The average wind speed is 11KM/H (7MPH) in the previous month and 15KM/H (10MPH) in the next month.

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

Monthly Averages

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