August weather forecast
Roseau, Dominica

In Roseau, Dominica, August weather is highly characteristic of the wet season. Even amongst the emphasis on showers during this time, the days continue to be warm, maintaining a tropical atmosphere. Sunlight remains a consistent partner to the rain, with both elements working in harmony to ensure the city's vibrancy. The sea, with its even temperature, continues to provide relief from the warm land temperatures. The dominance of rainfall this season may not suit all visitors, but it affords a unique chance to experience the island's tropical tempests firsthand.

Temperature

In Roseau, the months of May through October are known for the peak temperatures, reaching an average high of 31°C (87.8°F).

Rainfall

In Roseau, in August, it is raining for 20 days, with typically 246mm (9.69") of accumulated precipitation. In Roseau, during the entire year, the rain falls for 218 days and collects up to 1996mm (78.58") of precipitation.

Sea temperature

In August, the average sea temperature in Roseau is 28°C (82.4°F).
Note: For activities such as swimming and diving, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

The average length of the day in August in Roseau is 12h and 37min.
On the first day of August, sunrise is at 05:48 and sunset at 18:35. On the last day of the month, sunrise is at 05:52 and sunset at 18:18 AST.

Sunshine

March through August, with an average of 8h of sunshine, are months with the most sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Roseau. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 12 during August translates into these guidelines:
Ensure all key precautions. Defense against sun exposure is critical. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.