Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Port Louis experiences a subtle adjustment in high-temperatures to a still warm 23.7°C (74.7°F) with the onset of September, maintaining near parity with August's 23.5°C (74.3°F). Nights in September in Port Louis exhibit a minor reduction to an average low temperature of 21.6°C (70.9°F).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 73%.Rainfall
The month with the least rainfall in Port Louis is September, when the rain falls for 10 days and typically collects 8mm (0.31") of precipitation.Sea temperature
August and September, with an average sea temperature of 23.7°C (74.7°F), are months with the coldest seawater in Port Louis.Note: Think about diving into 23.7°C (74.7°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
In Port Louis, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:18 and sunset at 18:01. On the last day of September, sunrise is at 05:51 and sunset at 18:07 +04.
Sunshine
The average sunshine in September is 9.2h.UV index
May through November, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
Frequently asked questions
What are the temperatures in Port Louis in September?
What is the least humid month in Port Louis?
What is the average humidity in September in Port Louis?
What is the driest month in Port Louis?
How much does it rain in Port Louis in September?
When is the sea coldest in Port Louis?
What is the water temperature in September in Port Louis?
What is the average length of the day in September in Port Louis?
When is the sunrise / sunset in September in Port Louis?
How long on average sun shines in September in Port Louis?
When is the lowest UV index in Port Louis?
What is the UV index intensity in September in Port Louis?
Average temperature in September
Port Louis, Mauritius
- Average high temperature in September: 23.7°C
The warmest month (with the highest average high temperature) is February (28.6°C).
The month with the lowest average high temperature is August (23.5°C).
- Average low temperature in September: 21.6°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
Port Louis, Mauritius
- Average pressure in September: 1020.5mbar
The month with the highest atmospheric pressure is August (1021mbar).
The month with the lowest atmospheric pressure is February (1011.1mbar).
Average wind speed in September
Port Louis, Mauritius
- Average wind speed in September: 22.1km/h
The windiest month (with the highest average wind speed) is August (23.6km/h).
The calmest month (with the lowest average wind speed) is November (17.1km/h).
Average humidity in September
Port Louis, Mauritius
- Average humidity in September: 73%
The months with the highest relative humidity are January, February and March (78%).
The months with the lowest relative humidity are August and September (73%).
Average rainfall in September
Port Louis, Mauritius
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is January (97mm).
The driest month (with the least rainfall) is September (8mm).
Average rainfall days in September
Port Louis, Mauritius
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is March (20.8 days).
The months with the least rainy days are October and November (9.5 days).
Average sea temperature in September
Port Louis, Mauritius
- Average sea temperature in September: 23.7°C
The best month for swimming (with the highest average sea temperature) is March (28.5°C).
The coldest months (with the lowest average sea temperature) are August and September (23.7°C).
Average daylight in September /
Average sunshine in September
Port Louis, 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: 9h and 1min
The month with the most sunshine is October (Average sunshine: 10h and 24min).
The month with the least sunshine is July (Average sunshine: 6h and 18min).
Average sunshine days in September
Port Louis, Mauritius
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is February (5.2 days).
Average UV index in September
Port Louis, Mauritius
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April and December (UV index 7).
The months with the lowest UV index are May, June, July, August, September, October and November (UV index 6).
Average cloud cover in September
Port Louis, Mauritius
- Average cloud cover in September: 36
The months with the most cloud cover are January and March (Cloud cover 44).
The month with the least cloud cover is May (Cloud cover 35).
Average visibility in September
Port Louis, 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).
Port Louis, Mauritius
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