September weather forecastMahé, Seychelles
September
Weather in September
September in Mahé, Seychelles, brings a slight increase in temperature and rainfall. There occurs a substantial jump in the amount of rain, reaching 79mm (3.11") over an average of 20.5 days. However, the humidity and pressure remain mostly unchanged from August. Despite these changes, the month is still primarily characterized by pleasant weather suitable for sightseeing and water activities. The increase in rainfall completely refreshes and invigorates the island's vibrant natural beauty.Temperature
With the advent of September, Mahé experiences an average high-temperature of a still warm 26.8°C (80.2°F), mirroring a close resemblance to the previous month. September nights in Mahé witness a slight temperature decrease, averaging at a still moderately hot 26.1°C (79°F).Humidity
The months with the highest humidity are July through September, with an average relative humidity of 80%.Rainfall
In September, the rain falls for 20.5 days. Throughout September, 79mm (3.11") of precipitation is accumulated. In Mahé, during the entire year, the rain falls for 241.9 days and collects up to 1432mm (56.38") of precipitation.Sea temperature
In Mahé, in September, the average water temperature is 27.4°C (81.3°F).Note: Water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.
Daylight
The average length of the day in September in Mahé is 12h and 5min.On the first day of the month, sunrise is at 06:17 and sunset at 18:18. On the last day of September, sunrise is at 06:03 and sunset at 18:12 +04.
Sunshine
September has the least sunshine of the year in Mahé, Seychelles, with an average of 7h of sunshine.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Mahé are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mahé, Seychelles
- Average high temperature in September: 26.8°C
The warmest month (with the highest average high temperature) is April (29.3°C).
The month with the lowest average high temperature is August (26.4°C).
- Average low temperature in September: 26.1°C
The month with the highest average low temperature is April (28.1°C).
The coldest months (with the lowest average low temperature) are July and August (25.7°C).
Average pressure in September
Mahé, Seychelles
- Average pressure in September: 1012.3mbar
The month with the highest atmospheric pressure is August (1012.4mbar).
The month with the lowest atmospheric pressure is April (1010.4mbar).
Average wind speed in September
Mahé, Seychelles
- Average wind speed in September: 26.2km/h
The windiest month (with the highest average wind speed) is August (28.1km/h).
The calmest month (with the lowest average wind speed) is April (12.8km/h).
Average humidity in September
Mahé, Seychelles
- Average humidity in September: 80%
The months with the highest relative humidity are July, August and September (80%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Mahé, Seychelles
- Average rainfall in September: 79mm
The wettest month (with the highest rainfall) is January (220mm).
The driest month (with the least rainfall) is August (50mm).
Average rainfall days in September
Mahé, Seychelles
- Average rainfall days in September: 20.5 days
The month with the highest number of rainy days is January (23.2 days).
The month with the least rainy days is November (17.3 days).
Average sea temperature in September
Mahé, Seychelles
- Average sea temperature in September: 27.4°C
The best month for swimming (with the highest average sea temperature) is April (29.8°C).
The coldest month (with the lowest average sea temperature) is August (26.2°C).
Average daylight in September /
Average sunshine in September
Mahé, Seychelles
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is November (Average sunshine: 10h and 6min).
The month with the least sunshine is September (Average sunshine: 7h and 0min).
Average sunshine days in September
Mahé, Seychelles
- Average sunshine days in September: 3.8 days
The month with the most sunshine days is November (10.9 days).
The month with the least sunshine days is June (3 days).
Average UV index in September
Mahé, Seychelles
- 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
Mahé, Seychelles
- Average cloud cover in September: 51
The month with the most cloud cover is September (Cloud cover 51).
The month with the least cloud cover is November (Cloud cover 41).
Average visibility in September
Mahé, Seychelles
- 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).
