September weather forecast
Vigie, Saint Lucia

Transitioning into the fall season, September in Vigie, Saint Lucia, presents a subtle decrease in temperature while carrying forward the charm of the tropical climate. The rain experienced in August gradually starts to wind down. As the wind goes down another notch to 16.7km/h (10.4mph), it helps maintain an equilibrium with the declining temperatures. The month's classic highlight lies in its winning concoction of sunny weather, moderate rainfall of 63mm (2.48"), and soothing winds, articulating an appealing weather pattern.

Temperature

September temperatures tend to peak at an average high of 30.3°C (86.5°F) and dip to a low of 27°C (80.6°F).

Heat index

September's heat index is calculated to be a fiery hot 37°C (98.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

January through March and September, with an average relative humidity of 73%, are the least humid months in Vigie.

Rainfall

In Vigie, during September, the rain falls for 20.3 days and regularly aggregates up to 63mm (2.48") of precipitation. Throughout the year, there are 255.2 rainfall days, and 560mm (22.05") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:15. On the last day of September, in Vigie, sunrise is at 05:53 and sunset at 17:54 AST.

Sunshine

The average sunshine in September is 9.6h.

UV index

January through May, July through December, with an average maximum UV index of 7, are months with the highest UV index in Vigie. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.