September weather forecast
Ilhéus, Brazil

The first month of the spring, September, is still a warm month in Ilhéus, Brazil, with an average temperature varying between 23°C (73.4°F) and 27°C (80.6°F).

Temperature

Ilhéus observes an average high-temperature of a still moderately hot 27°C (80.6°F) in September, barely different from 26°C (78.8°F) in August. During the September nights, Ilhéus's temperature maintains an average close to the daytime highs, settling at a still warm 23°C (73.4°F).

Rainfall

In Ilhéus, in September, during 20 rainfall days, 134mm (5.28") of precipitation is typically accumulated. Throughout the year, there are 269 rainfall days, and 1901mm (74.84") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 25.4°C (77.7°F), September is the month with the coldest seawater.
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

In September, the average length of the day is 12h and 1min.
On the first day of September, sunrise is at 05:40 and sunset at 17:31. On the last day of the month, sunrise is at 05:19 and sunset at 17:32 -03.

Sunshine

In September, the average sunshine in Ilhéus is 7h.

UV index

In September, the average daily maximum UV index is 11. A UV Index of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, a daily UV index of 11 turns into the following recommendations:
Ensure every key safety measure. People with light skin might sustain burns in fewer than 5 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The mirror effect of sand and water ups the UV radiation strength.