September weather forecast and climate
Funafuti, Tuvalu

September, the first month of the spring, in Funafuti, is still a tropical month, with average temperature varying between 30°C (86°F) and 27°C (80.6°F).

Temperature

February, March, June through September, with an average high-temperature of 30°C (86°F), are the coldest months.

Rainfall

September is the month with the least rainfall. Rain falls for 19 days and accumulates 231mm (9.09") of precipitation.

Sea temperature

Months with the coldest seawater are August and September, with an average sea temperature of 29.1°C (84.4°F).
Note: 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.

Daylight

In September, the average length of the day is 12.1h.

Sunshine

The average sunshine in Funafuti is 19h.

UV index

Months with the highest UV index are January through April, September through December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 12 transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.