Weather in St Lucia in September

So you're interested in going to St Lucia in September

September is a hot and slightly rainy time for sunbathing in St Lucia. September is an excellent month for swimming in St Lucia with very warm sea temperatures. Consider visiting St Lucia in the months of March, September, October, November, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in St Lucia in September

The average maximum temperature in St Lucia in September is 31°. The average maximum temperature is 31° in the previous month and 31° in the next month.

The average temperature in St Lucia in September is 28°. The average temperature ranges is 28° in the previous month and 28° in the next month.

The average minimum temperature in St Lucia in September is 26°. The minimum temperature is 26° in the previous month and 26° in the next month.

Sunshine in St Lucia in September

The average day light hours per day in St Lucia in September are 12.2 and there are 8.9 hours of sunshine per day on average during September making it a sunny month with few clouds.

The ultraviolet index in St Lucia in September is typically 13.1 during September. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in St Lucia in September

The average sea water temperature in St Lucia in September is 28.7° which is very warm and ideal for relaxing and swimming for the whole day.

Rainfall in St Lucia in September

The average total rainfall in St Lucia in September is 3.1cm and on average there are 15 rainy days in September making it a slightly wet time to visit the beach.

Humidity in St Lucia in September

The maximum dew point (an indicator of humidity) in St Lucia in September is 25° which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning. The dew point is 25° in the previous month and 25° in the next month.

The average maximum relative humidity in St Lucia in September is typically 90.2%. The maximum relative humidity is 90% in the previous month and 90.5% in the next month.

The average relative humidity in St Lucia in September is typically 77.3%. The average relative humidity is 78.2% in the previous month and 78% in the next month.

Wind Speed in St Lucia in September

The average maximum wind speed in St Lucia in September is typically 25kmh. The average maximum wind speed is 29kmh in the previous month and 27kmh in the next month.

The average wind speed in St Lucia in September is typically 14kmh. The average wind speed is 18kmh in the previous month and 16kmh in the next month.

The average wind direction in St Lucia in September is from the East.

Monthly Averages

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