September weather forecast
Mustique, Saint Vincent and the Grenadines

September ushers in early autumn, heralding a reduction in temperature. The rainfall remains substantial at 270mm (10.63"), signifying the lingering influence of the wet season. With shorter daylight hours, the pace starts to slow down. However, the decrease in the UV index and soothing sea temperatures makeoutdoor enjoyment viable. September signifies a mix of vibrant greenery due to showers and cool sea breezes.

Temperature

The start of September marks an average high-temperature of a still warm 29°C (84.2°F), no different from the conditions in August. Mustique witnesses a consistent average low-temperature of 23°C (73.4°F) throughout September.

Rainfall

In September, the rain falls for 21 days. Throughout September, 270mm (10.63") of precipitation is accumulated. Throughout the year, there are 200 rainfall days, and 2447mm (96.34") of precipitation is accumulated.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Mustique.
Note: In any water activity, temperatures between 25°C (77°F) and 29°C (84.2°F) are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.

Daylight

The average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:15. On the last day of September, sunrise is at 05:53 and sunset at 17:55 AST.

Sunshine

September and October, with an average of 7h of sunshine, are months with the least sunshine.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 12 in September leads to these guidelines:
Implement every essential safety step. Individuals with fair skin might receive burns in less than 5 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Even when it's cloudy, ensure the generous application and frequent reapplication of a sunscreen with at least 30 SPF, particularly post swim or outdoor activity. Notice! Sand and water reflections contribute to a stronger UV exposure.