September weather forecast
Funafuti, Tuvalu

In September, Funafuti, Tuvalu experiences another slip in rain volume, now down to 231mm (9.09"). As we advance into the second part of the year, the weather conditions continue to favour spending time outdoors. Maintained sea temperature of around 29.1°C (84.4°F) and an increased daylight of 12.1 hours suggest swimwear as a dressing norm. Sunshine dominates the days, encouraging touring and exploration activities. Despite marginal changes in weather parameters like UV index, weather stays largely consistent.

Temperature

Funafuti's lowest average temperatures are recorded in February, March, June through September, reaching a high of 30°C (86°F).

Rainfall

The month with the least rainfall is September, when the rain falls for 19 days and typically collects 231mm (9.09") of precipitation.

Sea temperature

August and September, with an average sea temperature of 29.1°C (84.4°F), are months with the coldest seawater.
Note: For any water activity, having surface water temperatures from 25°C (77°F) to 29°C (84.2°F) is considered outstanding and highly delightful for lengthened periods.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of the month, sunrise is at 06:04 and sunset at 18:01. On the last day of September, sunrise is at 05:48 and sunset at 17:58 +12.

Sunshine

In September, the average sunshine is 19h.

UV index

The months with the highest UV index are January through April, September through December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 12 in September, converts into the following recommendations:
Undertake every vital safety procedure, as unprotected skin and eyes could sustain burns in no time. 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. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.