Weather in Similan Islands, Thailand in September

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Visiting Similan Islands, Thailand in September

The weather in September is marginally cooler than the previous month and temperatures continue to drop slightly into October. September has average maximum temperatures of 31°C (87°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 44% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.4 hours of sunshine per day. It is not an optimal time for sunbathing but it is possible on clearer days in Similan Islands.

September has total rainfall of 87.3cm (34.4inches) making it rainy with frequent heavy tropical showers. There are 20 days with some rainfall so you can still enjoy the beach on the clear days.

Sea temperatures are a very warm 29°C (84°F). September is an excellent month for swimming in Similan Islands with very comfortable temperatures for bathing all day. The sea temperature in September is slightly cooler than the previous month.

Consider visiting Similan Islands in the months of January, February, March, December, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Similan Islands in September?

Yes, September is not an optimal time for sunbathing but it is possible on clearer days in Similan Islands.

September has average maximum temperatures of 31°C (87°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 44% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.4 hours of sunshine per day. September has total rainfall of 87.3cm (34.4inches) making it rainy with frequent heavy tropical showers. There are 20 days with some rainfall so you can still enjoy the beach on the clear days.

More about September temperature and sunshine.

Can you swim in Similan Islands in September?

Yes, September is an excellent month for swimming in Similan Islands with very warm sea temperatures 29°C (84°F).

More about September sea temperatures.

Is September a good time to holiday in Similan Islands?

Yes, September is a good time for a holiday in Similan Islands.

September has average maximum temperatures of 31°C (87°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 44% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.4 hours of sunshine per day. September has total rainfall of 87.3cm (34.4inches) making it rainy with frequent heavy tropical showers. There are 20 days with some rainfall so you can still enjoy the beach on the clear days. It is not an optimal time for sunbathing but it is possible on clearer days in Similan Islands. Sea temperatures are a very warm 29°C (84°F). September is an excellent month for swimming in Similan Islands with very comfortable temperatures for bathing all day.

More about the September temperatures and sunshine.

Is Similan Islands warm in September?

Yes, Similan Islands is very hot and perfect for sunbathing on clear days in September.

The average maximum temperature in Similan Islands in September is 31°C (87°F). The average maximum temperature is 31°C (87°) in the previous month and 30°C (87°F) in the next month.

The average temperature in Similan Islands in September is 28°C (82°F). The average temperature is 28°C (82°F) in the previous month and 27°C (81°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Similan Islands in September?

The average day light hours per day in Similan Islands in September are 12.2. The sunshine percentage is 44% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.4 hours of sunshine per day.

More about September sunshine.

Temperature in Similan Islands in September

The weather in September is marginally cooler than the previous month and temperatures continue to drop slightly into October. The average maximum temperature in Similan Islands in September is 31°C (87°F). The average maximum temperature is 31°C (87°F) in the previous month and 30°C (87°F) in the next month.

The average temperature in Similan Islands in September is 28°C (82°F). The average temperature is 28°C (82°F) in the previous month and 27°C (81°F) in the next month.

The average minimum temperature in Similan Islands in September is 24°C (76°F). The minimum temperature is 25°C (77°F) in the previous month and 24°C (75°F) in the next month.

Sunshine in Similan Islands in September

The days in September are marginally shorter than the previous month and days continue to get marginally shorter into October. September has fewer 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 12.2 per day in Similan Islands. The sunshine percentage is 44% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.4 hours of sunshine per day.

The ultraviolet index in Similan Islands in September is typically 14.1 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 Similan Islands in September

The average sea water temperature in Similan Islands in September is 29°C (84.2°F) which is very warm and ideal for relaxing and swimming for the whole day. The sea temperature in September is slightly cooler than the previous month.

Rainfall in Similan Islands in September

September weather is wetter than the previous month and rainfall continues to rise into October. September has a few more days of rain than the previous month and rainy days continue to rise slightly into October. The average total rainfall in Similan Islands in September is 87.3cm (34.4inches) and on average there are 20 rainy days in September making it a wet time to visit the beach.

Humidity in Similan Islands in September

The maximum dew point (an indicator of humidity) in Similan Islands in September is 25°C (77°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning. The dew point is 25°C (77°F) in the previous month and 25°C (25°F) in the next month.

The average maximum relative humidity in Similan Islands in September is typically 92.6%. The maximum relative humidity is 90.7% in the previous month and 93.5% in the next month.

The average relative humidity in Similan Islands in September is typically 80.2%. The average relative humidity is 78.7% in the previous month and 81.7% in the next month.

Wind Speed in Similan Islands in September

The average maximum wind speed in Similan Islands in September is typically 27KM/H (17MPH). The average maximum wind speed is 27KM/H (17MPH) in the previous month and 24KM/H (15MPH) in the next month.

The average wind speed in Similan Islands in September is typically 10KM/H (6MPH). The average wind speed is 11KM/H (7MPH) in the previous month and 8KM/H (5MPH) in the next month.

The average wind direction in Similan Islands in September is from the West.

Monthly Averages

Suggested Beaches in September

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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.