September weather forecast
Sosúa, Dominican Republic

As the summer winds down in September, there is an increment in rainfall from 53mm (2.09") to 76mm (2.99") in Sosúa. Yet, the month is still brimming with clear, sunny days that make sightseeing enjoyable. The sea continues to be warm, inviting swimmers and sunbathers to the coastline. Nightfall does not stop the vibrancy, as the twilight adds an ethereal charm to the city. Constant winds offer a refreshing interlude amidst the tropical heat.

Temperature

With the transition into September, Sosúa notes an average high-temperature of a still hot 30.1°C (86.2°F), closely resembling August. During the month of September, an average temperature of 24.1°C (75.4°F) is noted during the nights in Sosúa.

Heat index

In September, the average heat index is calculated to be a torrid 38°C (100.4°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In September, the average relative humidity is 79%.

Rainfall

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

Sea temperature

The month with the warmest seawater in Sosúa is September, with an average sea temperature of 29.3°C (84.7°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

In Sosúa, Dominican Republic, the average length of the day in September is 12h and 15min.
On the first day of September, sunrise is at 06:26 and sunset at 18:56. On the last day of the month, sunrise is at 06:32 and sunset at 18:30 AST.

Sunshine

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

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.