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 in Mustique 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

During September, Mustique sees a high temperature of a still moderately hot 29°C (84.2°F), reflecting a continuity from August. During September, Mustique records a consistent average nighttime temperature of 23°C (73.4°F).

Rainfall

In Mustique, in September, during 21 rainfall days, 270mm (10.63") of precipitation is typically accumulated. In Mustique, during the entire year, the rain falls for 200 days and collects up to 2447mm (96.34") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) offer outstanding conditions for any water activity, providing extreme pleasure for extended periods.

Daylight

In Mustique, Saint Vincent and the Grenadines, 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

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

UV index

The months with the highest UV index in Mustique, Saint Vincent and the Grenadines, are February through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a daily UV index of 12 turns into the following recommendations:
Utilize every vital safety procedure. Individuals with light skin may endure burns in less than 5 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Post an outdoor workout or swimming, a broad-spectrum SPF 30+ sunscreen should be applied generously and frequently. Beware! Reflections from sand and water can intensify the Sun's UV radiation.