Port Louis (Mauritius) in September
In September, Port Louis (Mauritius) averages 26°C (79°F) during the day and 20°C (68°F) at night, with frequent rain — about 18 days of the month see precipitation (23 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
September offers comfortable temperatures in Port Louis (Mauritius), with some rain to plan around.
How September compares to the rest of the year in Port Louis (Mauritius)
September is in the middle of the year for warmth in Port Louis (Mauritius) (9th of 12) and one of the driest months (12th of 12). Daytime temperature runs 2°C below the annual average (28°C). September runs 1°C warmer than August (25°C) and warms a further 2°C into October (28°C).
September sunrise & sunset in Port Louis (Mauritius)
Times shown for Port Louis (Mauritius) local time (Indian/Mauritius), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Port Louis (Mauritius) — September
Golden-hour and blue-hour windows for the 15th of September, in Port Louis (Mauritius)'s local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Port Louis (Mauritius) in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Port Louis (Mauritius)'s popularity.
Crowds & pricing — September in Port Louis (Mauritius)
Port Louis (Mauritius) is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — September in Port Louis (Mauritius)
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Port Louis (Mauritius) — September
Across the year Port Louis (Mauritius)'s sea swings from 24.4°C (September) to 28.2°C (March) — September sits at 24.4°C.
Port Louis (Mauritius) in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 29°C / 85°F | 25°C / 76°F | 227 mm | 29 | — |
| February | 29°C / 85°F | 25°C / 77°F | 158 mm | 27 | — |
| March | 29°C / 85°F | 25°C / 76°F | 144 mm | 28 | — |
| April | 29°C / 83°F | 24°C / 75°F | 95 mm | 26 | — |
| May | 27°C / 81°F | 22°C / 72°F | 42 mm | 21 | — |
| June | 26°C / 78°F | 21°C / 69°F | 25 mm | 19 | — |
| July | 25°C / 77°F | 20°C / 68°F | 31 mm | 22 | — |
| August | 25°C / 77°F | 20°C / 68°F | 32 mm | 19 | — |
| September | 26°C / 79°F | 20°C / 68°F | 23 mm | 18 | — |
| October | 28°C / 82°F | 21°C / 71°F | 43 mm | 20 | — |
| November | 29°C / 84°F | 23°C / 73°F | 51 mm | 22 | — |
| December | 30°C / 85°F | 24°C / 75°F | 123 mm | 24 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Port Louis (Mauritius) in September →
Frequently asked questions
How hot is Port Louis (Mauritius) in September?
In September, Port Louis (Mauritius) averages a high of 26°C (79°F) and a low of 20°C (68°F) — generally warm.
Does it rain a lot in Port Louis (Mauritius) in September?
September is quite rainy in Port Louis (Mauritius), with about 18 rainy days on average.
Is September a good time to visit Port Louis (Mauritius)?
September is warm but on the rainy side. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Port Louis (Mauritius) in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Port Louis (Mauritius) for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.