September weather forecast
Trou d'Eau Douce, Mauritius

September

Weather in September

With the onset of September, Trou d'Eau Douce begins to experience the pre-summer warmth. The most significant shift visible is in the rainfall, hitting the lowest for the year, a mere 18mm (0.71") over 14.2 days. This appreciable reduction in rainfall paves the way for longer sunshine hours, enhancing outdoor leisure. With maintained wind speeds and daylight hours, the overall weather conditions express a gradual escalation towards warmer days. Temperatures show a moderately increasing trend as October edges closer.

Temperature

In September, Trou d'Eau Douce's weather conditions record an average high-temperature of a moderately hot 23.3°C (73.9°F), demonstrating little divergence from the preceding month. Trou d'Eau Douce maintains a consistent average nighttime low-temperature of 21.5°C (70.7°F) throughout September.

Humidity

The months with the lowest humidity are July through September, with an average relative humidity of 74%.

Rainfall

In Trou d'Eau Douce, in September, during 14.2 rainfall days, 18mm (0.71") of precipitation is typically accumulated. In Trou d'Eau Douce, during the entire year, the rain falls for 199.3 days and collects up to 565mm (22.24") of precipitation.

Sea temperature

The months with the coldest seawater are August and September, with an average sea temperature of 23°C (73.4°F).
Note: While a person's sensitivity to cold is personal, factors like sunshine, wind, and the temperature can influence their comfort in 23°C (73.4°F) waters. Olympians, for perspective, swim in waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

In Trou d'Eau Douce, the average length of the day in September is 11h and 59min.
On the first day of September, sunrise is at 06:17 and sunset at 18:00. On the last day of the month, sunrise is at 05:50 and sunset at 18:06 +04.

Sunshine

The average sunshine in September is 8.9h.

UV index

The months with the lowest UV index are May through October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

Frequently asked questions

What are the temperatures in September?
In September, the average high-temperature and low-temperature are 23.3°C (73.9°F) and 21.5°C (70.7°F) respectively. In April, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 30°C (86°F).
What is the least humid month?
The months with the lowest humidity are July through September, with an average relative humidity of 74%.
What is the average humidity in September?
The average relative humidity in September is 74%.
How many days does it rain in September?
In Trou d'Eau Douce, in September, it is raining for 14.2 days, with typically 18mm (0.71") of accumulated precipitation.
What months are the sea coldest in Trou d'Eau Douce?
The months with the coldest seawater are August and September, with an average sea temperature of 23°C (73.4°F).
What is the sea temperature in September?
In Trou d'Eau Douce, the average seawater temperature in September is 23°C (73.4°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23°C (73.4°F) water.
How many hours of daylight does Trou d'Eau Douce have in September?
In September, the average day length is 11h and 59min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 06:17 and sunset at 18:00. On the last day of the month, sunrise is at 05:50 and sunset at 18:06 +04.
How long on average sun shines in September?
In September, the average sunshine duration is 8.9h.
What are the months with the lowest UV index?
May through October, with an average maximum UV index of 6, are months with the lowest UV index in Trou d'Eau Douce.
What is the UV index intensity in September?
In Trou d'Eau Douce, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Trou d'Eau Douce, Mauritius
  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is February (28.2°C).
The month with the lowest average high temperature is August (22.9°C).

  • Average low temperature in September: 21.5°C

The month with the highest average low temperature is February (26°C).
The coldest month (with the lowest average low temperature) is August (21.3°C).

Average pressure in September
Trou d'Eau Douce, Mauritius
  • Average pressure in September: 1020.5mbar

The month with the highest atmospheric pressure is August (1021.2mbar).
The month with the lowest atmospheric pressure is February (1011.2mbar).

Average wind speed in September
Trou d'Eau Douce, Mauritius
  • Average wind speed in September: 22.7km/h

The windiest month (with the highest average wind speed) is August (24.3km/h).
The calmest month (with the lowest average wind speed) is November (17.7km/h).

Average humidity in September
Trou d'Eau Douce, Mauritius
  • Average humidity in September: 74%

The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July, August and September (74%).

Average rainfall in September
Trou d'Eau Douce, Mauritius
  • Average rainfall in September: 18mm

The wettest month (with the highest rainfall) is February (105mm).
The driest month (with the least rainfall) is October (16mm).

Average rainfall days in September
Trou d'Eau Douce, Mauritius
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is March (21.8 days).
The month with the least rainy days is November (9.9 days).

Average sea temperature in September
Trou d'Eau Douce, Mauritius
  • Average sea temperature in September: 23°C

The best month for swimming (with the highest average sea temperature) is February (28°C).
The coldest months (with the lowest average sea temperature) are August and September (23°C).

Average daylight in September /
Average sunshine in September
Trou d'Eau Douce, Mauritius
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 18min).
The month with the shortest days is June (Average daylight: 10h and 54min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is December (Average sunshine: 10h and 42min).
The month with the least sunshine is July (Average sunshine: 6h and 6min).

Average sunshine days in September
Trou d'Eau Douce, Mauritius
  • Average sunshine days in September: 9.7 days

The month with the most sunshine days is November (15 days).
The month with the least sunshine days is February (4 days).

Average UV index in September
Trou d'Eau Douce, Mauritius
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, November and December (UV index 7).
The months with the lowest UV index are May, June, July, August, September and October (UV index 6).

Average cloud cover in September
Trou d'Eau Douce, Mauritius
  • Average cloud cover in September: 40

The months with the most cloud cover are March and April (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 37).

Average visibility in September
Trou d'Eau Douce, Mauritius
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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