Port Louis in September
In September, Port Louis averages 26°C (79°F) during the day and 20°C (68°F) at night, with around 7 days of rain (23 mm total).
Peak seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
September is a great month to visit Port Louis: pleasant temperatures and relatively few wet days.
How September compares to the rest of the year in Port Louis
September is in the middle of the year for warmth in Port Louis (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
Times shown for Port Louis 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 — September
Golden-hour and blue-hour windows for the 15th of September, in Port Louis's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Port Louis 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 (Peak season) and Port Louis's popularity.
Crowds & pricing — September in Port Louis
Port Louis is in peak season during this month — expect bigger crowds at famous sights, higher hotel and flight prices, and longer queues. Restaurant reservations a few days out are advisable, and any boutique hotels you have your eye on should be booked weeks ahead. The trade-off: most attractions, restaurants, and seasonal services are fully open, the weather is at its most reliable, and the city feels at its most alive.
Why this tier: excellent tourism weather beach-season conditions
Sun & mosquito risk — September in Port Louis
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.
Port Louis in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 29°C / 85°F | 25°C / 76°F | 227 mm | 23 | — |
| February | 29°C / 85°F | 25°C / 77°F | 158 mm | 22 | — |
| March | 29°C / 85°F | 25°C / 76°F | 145 mm | 22 | — |
| April | 29°C / 83°F | 24°C / 75°F | 89 mm | 18 | — |
| May | 27°C / 81°F | 22°C / 72°F | 49 mm | 11 | — |
| June | 26°C / 78°F | 21°C / 69°F | 26 mm | 7 | — |
| July | 25°C / 77°F | 20°C / 68°F | 31 mm | 10 | — |
| August | 25°C / 78°F | 20°C / 68°F | 32 mm | 8 | — |
| September | 26°C / 79°F | 20°C / 68°F | 23 mm | 7 | — |
| October | 28°C / 82°F | 21°C / 70°F | 42 mm | 10 | — |
| November | 29°C / 84°F | 23°C / 73°F | 51 mm | 13 | — |
| December | 30°C / 85°F | 24°C / 75°F | 122 mm | 20 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Port Louis in September →
Frequently asked questions
How hot is Port Louis in September?
In September, Port Louis 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 in September?
September sees occasional rain in Port Louis, with about 7 rainy days on average.
Is September a good time to visit Port Louis?
September is warm. 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 in September?
Pack light layers for warm days and cooler evenings. See the full September packing list for Port Louis for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.