September weather forecast and climate
Mahé, Seychelles

A view from mount Copolia, of the scenic islands of Victoria and Eden, in Mahé, Seychelles, surrounded by clear water
A view from mount Copolia, of the scenic islands of Victoria and Eden, in Mahé, Seychelles, surrounded by clear water
The first month of the spring, September, is also a moderately hot month in Mahé, Seychelles, with average temperature varying between 26.1°C (79°F) and 26.8°C (80.2°F).

Temperature

In September, the average high-temperature is almost the same as in August - a still warm 26.8°C (80.2°F). In September, the average low-temperature is 26.1°C (79°F).

Humidity

July through September, with an average relative humidity of 80%, are most humid months.

Rainfall

In September, in Mahé, the rain falls for 20.5 days. Throughout September, 79mm (3.11") of precipitation is accumulated. Throughout the year, in Mahé, Seychelles, there are 241.9 rainfall days, and 1432mm (56.38") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature is 27.4°C (81.3°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In September, the average length of the day in Mahé is 12.1h.

Sunshine

With an average of 7h of sunshine, September has the least sunshine of the year.

UV index

Months with the highest UV index in Mahé, Seychelles, are January through December, with an average maximum UV index of 7. Months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in September in Mahé?

In September, in Mahé, the average high-temperature is 26.8°C (80.2°F), and the average low-temperature is 26.1°C (79°F).

What are the most humid months in Mahé?

Months with the highest humidity are July through September, with an average relative humidity of 80%.

What is the average humidity in September in Mahé?

In Mahé, Seychelles, the average relative humidity in September is 80%.

How much does it rain in Mahé in September?

In September, the rain falls for 20.5 days. Throughout September, 79mm (3.11") of precipitation is accumulated.

What is the water temperature in September in Mahé?

In Mahé, Seychelles, the average seawater temperature in September is 27.4°C (81.3°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Mahé have in September?

In September, the average length of the day is 12.1h.

What is the month with the least sunshine in Mahé?

With an average of 7h of sunshine, September has the least sunshine of the year in Mahé.

How many hours of sunshine does Mahé have in September?

In September, the average sunshine in Mahé, Seychelles, is 7h.

When is the highest UV index in Mahé?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Mahé, Seychelles.

When is the lowest UV index in Mahé?

Months with the lowest UV index are January through December, with an average maximum UV index of 7.

What is the UV index intensity in September in Mahé?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
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%

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: 12.1h

Months with the longest days are January and December (Average daylight: 12.4h).
Months with the shortest days are May, June and July (Average daylight: 11.9h).

  • Average sunshine in September: 7h

The month with the most sunshine is November (Average sunshine: 10.1h).
The month with the least sunshine is September (Average sunshine: 7h).

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

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
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

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).