September weather forecast
Saint-Gilles, Reunion

September witnesses a shift in the weather pattern in Saint-Gilles, Reunion with a slight increase in the average highs and lows. The most noticeable shift though is the lowest recorded rainfall for the year at just 47mm (1.85"). The advantages of these changes are enhanced by an upswing in sea temperatures, enticing beachgoers once again. As daylight hours start to lengthen and the UV index climbs up to 10, protective measures against strong sun rays become essential. September's refreshing tonality makes it an inviting month for travel and exploration.

Temperature

With the onset of September in Saint-Gilles, the average high-temperature registers at a moderately hot 23°C (73.4°F), subtly different from August's 22°C (71.6°F). During September, Saint-Gilles witnesses a consistent average low-temperature of 15°C (59°F).

Rainfall

September is the month with the least rainfall in Saint-Gilles. Rain falls for 12 days and accumulates 47mm (1.85") of precipitation.

Sea temperature

August and September, with an average sea temperature of 23°C (73.4°F), are months with the coldest seawater in Saint-Gilles.
Note: Think about diving into 23°C (73.4°F) waters. Factors like your sensitivity to cold, the brightness of the sun, wind conditions, and the day's warmth play a role. For reference, Olympic swimming competitions use waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

The average length of the day in September is 11h and 59min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:10. On the last day of September, in Saint-Gilles, sunrise is at 06:00 and sunset at 18:17 +04.

Sunshine

January, February, September through December, with an average of 7h of sunshine, are months with the most sunshine in Saint-Gilles.

UV index

The average daily maximum UV index in September in Saint-Gilles, Reunion, is 10. A UV Index value of 8 to 10 symbolizes a very high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a regular UV index of 10 translates into these guidelines:
Being careless can result in skin and eye damage. Always take the necessary safety measures. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Protect your skin by minimizing time under direct sun, especially if you’re prone to burns. Always wear sunscreen of 30 SPF or higher. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.