Port Louis Weather in September
September in Port Louis typically sees daytime highs of 25°C (77°F) and nighttime lows of 20°C (68°F). Expect some rainfall during the month.
Rainfall in Port Louis in September
Typically, you can expect about 12 days of rain this month, with 32 mm (1.3 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Port Louis in September
Weather in Port Louis is at its perfect in September. Highs reach 25°C (77°F), while nights settle around 20°C (68°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 20°C (68°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Port Louis in September
The month enjoys around 242 hours of sunshine, creating mostly sunny days with good weather conditions.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mauritius, check out our Port Louis's climate page.
Port Louis Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
25°C (77°F)
Chance of Rain
40%
Precipitation
32 mm (1.3 in)
Rainy days
12 days
Sunshine
242 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Port Louis typically stay consistent throughout September, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows around 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Port Louis in September
Browse day-by-day weather records for Port Louis spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Port Louis historical weather extremes in September
Our historical data for Port Louis spans 1976 to 2025, revealing these weather extremes.
- On September 16, 1982, temperatures climbed to 31°C (88°F), marking the warmest September day on record.
- Port Louis experienced its chilliest September day on September 5, 1977, reaching only 15°C (59°F).
- The coldest night in September in Port Louis was on September 17, 1983, with a minimum of 10°C (50°F).
Best Places in Mauritius in September
Find out more about the weather in Mauritius and which places have the best travel conditions in this month. See all of Mauritius in September →
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What to Wear in Port Louis in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Port Louis in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mauritius, check out our Port Louis's climate page.
See the full Port Louis climate overview or explore weather in Mauritius.
