September weather forecast
Gros Islet, Saint Lucia

September in Gros Islet becomes the month with the most rainfall days, counting a total of 25. The rise in rainfall does not disturb the city's overall temperature profile, which continues to oscillate around the average range. The humidity level increases due to the high rainfall, blanketing the city in a damp aura. The persistent downpours and pervasive warmth combine to offer a distinct, humid charm. Amidst the rainfall, the city blooms in a medley of vibrant hues, rendering it particularly picturesque.

Temperature

Gros Islet's temperatures tend to hit their maximum during May through October, with an average high-temperature of 30°C (86°F).

Rainfall

In Gros Islet, Saint Lucia, in September, during 25 rainfall days, 224mm (8.82") of precipitation is typically accumulated. In Gros Islet, during the entire year, the rain falls for 209 days and collects up to 2035mm (80.12") of precipitation.

Sea temperature

The month with the warmest seawater is September, with an average sea temperature of 29.4°C (84.9°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

In September, the average length of the day in Gros Islet, Saint Lucia, is 12h and 13min.
On the first day of September, sunrise is at 05:52 and sunset at 18:15. On the last day of the month, sunrise is at 05:53 and sunset at 17:53 AST.

Sunshine

The months with the most sunshine in Gros Islet are January through September, November and December, with an average of 8h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Gros Islet. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 12 during September translates into the following recommendations:
Utilize all necessary safety measures, unprotected skin could suffer burns instantly. 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 effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Following every swim or outdoor workout, a sunscreen with an SPF of not less than 30 should be liberally applied and re-applied frequently, even on overcast days. Watch out! Reflections from sand and water can surge UV radiation exposure.