September weather forecast
Grande Riviere, Saint Lucia

As the city steps into September, Grande Riviere commences its gradual transition from the hot summer days to the cooler autumnal ambiance. Recordings show a slightly cooler trend with temperatures decreasing from 30.3°C (86.5°F) to 29.8°C (85.6°F). Despite the slight regression in temperatures, the sunlight remains quite strong, creating warm afternoons. The frequency of rainfall recedes and the wind speed comes down. Therefore, September makes for a noteworthy month for sightseeing and other outdoor pursuits in this city.

Temperature

In Grande Riviere, September is the warmest month, with temperatures averaging a high of 30.3°C (86.5°F) and a low of 27°C (80.6°F).

Heat index

The heat index for September is calculated to be a sweltering 37°C (98.6°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

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

Rainfall

In Grande Riviere, 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

In Grande Riviere, 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 Grande Riviere, sunrise is at 05:53 and sunset at 17:53 AST.

Sunshine

The average sunshine in September in Grande Riviere, Saint Lucia, 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. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.