Over the past decade (2015–2024), Mauritius has experienced a transition from winter to spring during September, leading to gradually warming temperatures and relatively dry conditions.

General Weather Conditions:
- September marks the transition from winter to spring in Mauritius, with gradually warming temperatures across all regions.
- Rainfall remains relatively low, with regions receiving between 40 mm (1.6 inches) to 70 mm (2.8 inches).
- Temperatures are mild, especially in higher-altitude areas like Curepipe.
- Humidity levels are moderate, contributing to the overall pleasantness.
- Sea temperatures remain warm, averaging around 23°C (73°F), making it comfortable for swimming and other water activities.
- Sunshine hours increase slightly, providing ample daylight for outdoor activities.
Here’s an overview of the typical weather patterns across various regions:
Port Louis (Northwest Coast):
- Temperature: Average highs around 25°C (77°F) and lows near 19°C (66°F).
- Rainfall: Approximately 45 mm (1.8 inches) over about 5 days.
- Humidity: Relative humidity averages 68%.
- Sea Temperature: Around 23°C (73°F), suitable for aquatic activities.
- Sunshine: Typically 7 hours of sunshine daily.
- UV Index: Moderate to high, with an average maximum UV index of 7.
Curepipe (Central Plateau):
- Temperature: Average highs around 21°C (70°F) and lows near 15°C (59°F).
- Rainfall: Moderate precipitation with about 70 mm (2.8 inches) over 7 days.
- Humidity: Relative humidity stands at 73%.
- Sunshine: Approximately 6 hours of sunshine daily.
Mahebourg (Southeast Coast):
- Temperature: Average highs around 24°C (75°F) and lows near 18°C (64°F).
- Rainfall: Experiences rainfall totaling 55 mm (2.2 inches) over 6 days in September.
- Humidity: Relative humidity averages 70%.
- Sunshine: Typically 6.5 hours of sunshine daily.
- Sea Temperature: Around 23°C (73°F), ideal for water activities.
Souillac (South Coast):
- Temperature: Average highs around 23°C (73°F) and lows near 17°C (63°F).
- Rainfall: September sees about 60 mm (2.4 inches) of rainfall over 6 days.
- Humidity: Relative humidity averages 69%.
- Sunshine: Typically 6.5 hours of sunshine daily.
- Sea Temperature: Around 23°C (73°F).
Tamarin (West Coast):
- Temperature: Average highs around 25°C (77°F) and lows near 19°C (66°F).
- Rainfall: September receives approximately 40 mm (1.6 inches) over 4 days.
- Humidity: Relative humidity averages 67%.
- Sunshine: Typically 7.5 hours of sunshine daily.
- Sea Temperature: Around 23°C (73°F).
Plaine Magnien (Southeast):
- Temperature: Average highs around 24°C (75°F) and lows near 18°C (64°F).
- Rainfall: September sees about 50 mm (2 inches) of rainfall over 5 days.
- Humidity: Relative humidity averages 70%.
- Sunshine: Typically 6.5 hours of sunshine daily.
- Sea Temperature: Around 23°C (73°F).
Flic en Flac (West Coast):
- Temperature: Average highs around 25°C (77°F); lows near 22°C (72°F).
- Rainfall: Approximately 28mm (1.1 inches).
- Humidity: Around 73%.
- Sea Temperature: Approximately 23.9°C (75°F).
- Sunshine: Averages 8 hours per day.
- UV Index: Moderate, with an average maximum UV index of 6.
Trou aux Biches (North):
- Temperature: Average highs around 24.4°C (76°F); lows near 22.2°C (72°F).
- Rainfall: Approximately 20mm (0.8 inches).
- Humidity: Around 73%.
- Sea Temperature: Approximately 23°C (73.4°F).
- Sunshine: Averages 8 hours per day.
- UV Index: Moderate, with an average maximum UV index of 6.
Grand Bay (North):
- Temperature: Average highs around 24.4°C (76°F); lows near 22.2°C (72°F).
- Rainfall: Approximately 20mm (0.8 inches).
- Humidity: Around 73%.
- Sea Temperature: Approximately 23°C (73.4°F).
- Sunshine: Averages 8 hours per day.
- UV Index: Moderate, with an average maximum UV index of 6.
Le Morne (South)
- Temperature: Average highs around 23°C (73°F) and lows near 17°C (63°F).
- Rainfall: September sees about 60 mm (2.4 inches) of rainfall over 6 days.
- Humidity: Relative humidity averages 69%.
- Sunshine: Typically 6.5 hours of sunshine daily.
- Sea Temperature: Around 23°C (73°F).
Belle Mare (Eastcoast):
- Temperature: Average high: 23.2°C (73.8°F), Average low: 21.6°C (70.9°F)
- Rainfall: Total precipitation: Approximately 14mm (0.55 inches). Number of rainfall days: Around 11.8 days
- Humidity: Approximately 74%
- Sea Temperature: Approximately 23°C (73.4°F)
- Sunshine: Average of 9.1 hours of sunshine per day
- UV Index: Average daily maximum UV index: 6 (High)
While specific year-to-year variations exist, these patterns provide a general overview of September weather across Mauritius’s regions over the past decade.
September
Location | Avg. High Temp (°C/°F) | Avg. Low Temp (°C/°F) | Avg. Rainfall (mm) | Avg. Sea Temp (°C/°F) |
---|---|---|---|---|
Flic en Flac | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
Tamarin | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
Grand Baie | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
Le Morne | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
Belle Mare | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
Blue Bay | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
Trou aux Biches | 24 / 75 | 19 / 66 | 51 | 24 / 75 |
For Comparison | ||||
London | 19 / 66 | 11 / 52 | 51 | – |
New York | 24 / 75 | 15 / 59 | 99 | 23 / 73 |
Paris | 20 / 68 | 11 / 52 | 51 | – |
Sydney | 19 / 66 | 10 / 50 | 67 | 19 / 66 |
Have a nice day everyone! Don’t forget to participate in the game! Before you book a flight or accommodation, let me know and we will discuss how you can do it. Details here: