Sosúa
Dominican Republic
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Sosúa, Dominican Republic

The first month of the autumn, September, is still a hot month in Sosúa, Dominican Republic, with average temperature fluctuating between 30.1°C (86.2°F) and 24.1°C (75.4°F).

Temperature

In Sosúa, the average high-temperature is relatively the same as in August - a still tropical 30.1°C (86.2°F). The average low-temperature, in Sosúa, is 24.1°C (75.4°F).

Heat index

The average heat index in September is calculated to a sweltering 37.7°C (99.9°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, clothing, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in September is 79%.

Rainfall

In Sosúa, in September, during 20.7 rainfall days, 76mm (2.99") of precipitation is typically accumulated. Throughout the year, there are 229.2 rainfall days, and 719mm (28.31") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 29.3°C (84.7°F), September is the month with the warmest seawater.
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In September, the average length of the day in Sosúa is 12.2h.

Sunshine

September has the most sunshine of the year, with an average of 9.6h of sunshine.

UV index

Months with the highest UV index in Sosúa are May through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Sosúa?

In Sosúa, Dominican Republic, in September, the average high-temperature is 30.1°C (86.2°F), and the average low-temperature is 24.1°C (75.4°F). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is calculated to 37.7°C (99.9°F).

What is the average humidity in September in Sosúa?

The average relative humidity in September in Sosúa, Dominican Republic, is 79%.

How many days does it rain in September in Sosúa?

In Sosúa, Dominican Republic, in September, during 20.7 rainfall days, 76mm (2.99") of precipitation is typically accumulated.

What is the month with the warmest sea water in Sosúa?

September is the month with the warmest seawater, with an average sea temperature of 29.3°C (84.7°F).

What is the sea water temperature in September in Sosúa?

In Sosúa, in September, the average water temperature is 29.3°C (84.7°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Sosúa?

The average length of the day in September is 12.2h.

What month has the most sunshine in Sosúa?

The month with the most sunshine is September, with an average of 9.6h of sunshine.

How many hours of sunshine does Sosúa have in September?

In Sosúa, the average sunshine in September is 9.6h.

What are the months with the highest UV index in Sosúa?

Months with the highest UV index in Sosúa are May through October, with an average maximum UV index of 7.

How high is the UV index in September in Sosúa?

The average daily maximum UV index in September in Sosúa, Dominican Republic, is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Sosúa, Dominican Republic
  • Average high temperature in September: 30.1°C

The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (26.3°C).

  • Average low temperature in September: 24.1°C

The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is March (20.9°C).

Average humidity in September - Sosúa, Dominican Republic
  • Average humidity in September: 79%

Months with the highest relative humidity are January and December (81%).
The month with the lowest relative humidity is July (77%).

Average rainfall in September - Sosúa, Dominican Republic
  • Average rainfall in September: 76mm

The wettest month (with the highest rainfall) is May (100mm).
The driest month (with the least rainfall) is July (39mm).

Average rainfall days in September - Sosúa, Dominican Republic
  • Average rainfall days in September: 20.7 days

The month with the highest number of rainy days is November (21.9 days).
The month with the least rainy days is June (15.6 days).

Average sea temperature in September - Sosúa, Dominican Republic
  • Average sea temperature in September: 29.3°C

The best month for swimming (with the highest average sea temperature) is September (29.3°C).
The coldest month (with the lowest average sea temperature) is February (25.8°C).

Average daylight in September / Average sunshine in September - Sosúa, Dominican Republic
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in September: 9.6h

The month with the most sunshine is September (Average sunshine: 9.6h).
The month with the least sunshine is March (Average sunshine: 8.4h).

Average UV index in September - Sosúa, Dominican Republic
  • Average UV index in September: 7

Months with the highest UV index are May, June, July, August, September and October (UV index 7).
Months with the lowest UV index are January, February, March, April, November and December (UV index 6).