September weather forecastPraslin, Saint Lucia
September
Weather in September
Signalling the transition towards the end of the rainy season, September experiences a reduction in rainfall to 64mm (2.52") in Praslin, Saint Lucia. Winds slowing to 18.6km/h (11.6mph) reflect less turbulent atmospheric conditions. The reduction in daylight hours, coupled with a slight decrease in cloud cover, signals the incoming conclusion of the summer period. Despite the receding hours of sunshine, UV protection remains crucial due to the constant UV index.Temperature
Praslin witnesses its peak temperatures during September and October, when the average high-temperature reaches 29.5°C (85.1°F).Heat index
The heat index in September is calculated to be a sweltering 35°C (95°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Note that heat index values are valued for light wind and location in the shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Praslin, during September, the rain falls for 19.5 days and regularly aggregates up to 64mm (2.52") of precipitation. Throughout the year, there are 232.4 rainfall days, and 542mm (21.34") of precipitation is accumulated.Daylight
In Praslin, 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
The average sunshine in September is 10.1h.UV index
The months with the highest UV index in Praslin 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 Praslin. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Praslin, Saint Lucia
- Average high temperature in September: 29.5°C
The warmest months (with the highest average high temperature) are September and October (29.5°C).
The month with the lowest average high temperature is February (26.8°C).
- Average low temperature in September: 27.6°C
The month with the highest average low temperature is September (27.6°C).
The coldest month (with the lowest average low temperature) is February (25.3°C).
Average pressure in September
Praslin, Saint Lucia
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is June (1014.9mbar).
The month with the lowest atmospheric pressure is November (1011.3mbar).
Average wind speed in September
Praslin, Saint Lucia
- Average wind speed in September: 18.3km/h
The windiest month (with the highest average wind speed) is February (26.9km/h).
The calmest month (with the lowest average wind speed) is September (18.3km/h).
Average humidity in September
Praslin, Saint Lucia
- Average humidity in September: 75%
The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in September
Praslin, Saint Lucia
- Average rainfall in September: 64mm
The wettest month (with the highest rainfall) is October (73mm).
The driest month (with the least rainfall) is February (18mm).
Average rainfall days in September
Praslin, Saint Lucia
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is February (15 days).
Average daylight in September /
Average sunshine in September
Praslin, Saint Lucia
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 10h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Praslin, Saint Lucia
- Average sunshine days in September: 7.1 days
The month with the most sunshine days is March (9.1 days).
The month with the least sunshine days is July (3.6 days).
Average UV index in September
Praslin, Saint Lucia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Praslin, Saint Lucia
- Average cloud cover in September: 37
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 35).
Average visibility in September
Praslin, Saint Lucia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
