September weather forecast
Mon Repos, Saint Lucia

As September arrives in Mon Repos, Saint Lucia, weather patterns exhibit signs of easing into autumn. Mirroring August's values closely, the city continues to enjoy temperate weather with abundant sunshine. The robust winds drop drastically down to a gentle breeze of 18.3km/h (11.4mph), hinting at the receding summer season. It is an ideal time for boat rides and fishing trips, as the relatively calm seas provide a more tranquil and serene experience. The city, with its balanced weather, beckons travellers to experience the island's unique blend of French and English heritage.

Temperature

Mon Repos experiences the peak of its temperatures in September and October, when the average high-temperatures rise to 29.5°C (85.1°F).

Heat index

The heat index in September is estimated at a very hot 35°C (95°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In September, the rain falls for 19.5 days. Throughout September, 64mm (2.52") of precipitation is accumulated. Throughout the year, in Mon Repos, there are 232.4 rainfall days, and 542mm (21.34") of precipitation is accumulated.

Daylight

In Mon Repos, Saint Lucia, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:14. On the last day of September, sunrise is at 05:53 and sunset at 17:53 AST.

Sunshine

In Mon Repos, the average sunshine in September is 10.1h.

UV index

The months with the highest UV index in Mon Repos are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Mon Repos. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.