September weather forecastSainte-Rose, Reunion
September
Weather in September
September in Sainte-Rose sees an end to the winter season, with temperatures moving up the scale and returning to a higher average of 21°C (69.8°F). The atmospheric pressure decreases marginally to 1020.7 mb and wind speeds return to lower values of around 15.7km/h (9.8mph). Despite the increase in temperature, there remains a decrement in the rainfall days compared to August. Overall, the September weather provides a comfortable transition between seasons.Temperature
September notes an average high-temperature of a still pleasant 21°C (69.8°F), subtly differing from August's 20.4°C (68.7°F). Nights in September cool down, indicating a minor disparity from daytime highs with an average low-temperature of 18.5°C (65.3°F).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 79%.Rainfall
The month with the least rainfall in Sainte-Rose is September, when the rain falls for 18.5 days and typically collects 26mm (1.02") of precipitation.Daylight
In Sainte-Rose, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:25 and sunset at 18:07. On the last day of September, sunrise is at 05:58 and sunset at 18:15 +04.
Sunshine
In September, the average sunshine is 8.9h.UV index
The months with the lowest UV index in Sainte-Rose are June through October, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sainte-Rose, Reunion
- Average high temperature in September: 21°C
The warmest month (with the highest average high temperature) is January (25.7°C).
The month with the lowest average high temperature is August (20.4°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is February (23.6°C).
The coldest month (with the lowest average low temperature) is August (18.2°C).
Average pressure in September
Sainte-Rose, Reunion
- Average pressure in September: 1020.7mbar
The month with the highest atmospheric pressure is August (1021.3mbar).
The month with the lowest atmospheric pressure is February (1011mbar).
Average wind speed in September
Sainte-Rose, Reunion
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is July (18km/h).
The calmest months (with the lowest average wind speed) are November and December (12.4km/h).
Average humidity in September
Sainte-Rose, Reunion
- Average humidity in September: 79%
The months with the highest relative humidity are February and March (84%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in September
Sainte-Rose, Reunion
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is January (199mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Sainte-Rose, Reunion
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is March (27.7 days).
The month with the least rainy days is September (18.5 days).
Average daylight in September /
Average sunshine in September
Sainte-Rose, Reunion
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is October (Average sunshine: 10h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 18min).
Average sunshine days in September
Sainte-Rose, Reunion
- Average sunshine days in September: 4.3 days
The month with the most sunshine days is October (5.5 days).
The month with the least sunshine days is February (0.3 days).
Average UV index in September
Sainte-Rose, Reunion
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, November and December (UV index 6).
The months with the lowest UV index are June, July, August, September and October (UV index 5).
Average cloud cover in September
Sainte-Rose, Reunion
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in September
Sainte-Rose, Reunion
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
