September weather forecast
Mauritius

September in Mauritius marks the beginning of the spring season. The weather starts to transition from the cooler and dryer winter months, with a gradual increase in temperatures and a slight rise in rainfall levels. The onset of spring, combined with still manageable humidity levels, makes the month comfortable and pleasant.

In comparison to August, temperatures in September begin to increase as the island transitions from winter to spring. However, this rise is gradual, and the climate remains relatively warm and comfortable.

Rainfall in September sees a slight increase compared to the preceding winter months but remains generally low, contributing to the overall dry conditions on the island. Despite the increase in rainfall, the island continues to enjoy ample hours of sunshine, keeping the weather pleasant and suitable for a variety of outdoor activities.

Regionally, the weather conditions remain consistent with previous months. Port Louis, on the leeward side of the island, maintains its dry conditions. Higher-altitude areas like Plaine Champagne, however, continue to receive more rainfall, even with the slight increase in precipitation across the island.

The southeast trade winds, which had weakened over the winter months, begin to strengthen slightly in September, yet average wind speeds stay in the range of 20.9km/h (13mph) to 29km/h (18mph). The increase in wind strength is gradual and does not significantly impact the overall calm weather conditions.

Humidity levels in September remain relatively low, but a slight increase can be noticed as the month progresses. Nevertheless, the humidity levels, along with the rising temperatures, contribute to a comfortable climate that remains pleasant for visitors.

Seawater temperatures in September stay warm, averaging between 22.2°C (72°F) and 27.2°C (81°F), which continues to support swimming and other water activities. Therefore, September, with its moderate temperatures, low rainfall, and manageable humidity levels, offers a favourable environment for both land-based and water activities.

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• Port Louis - September »
  August and September, with an average sea temperature of 23.7°C (74.7°F), are months with the coldest seawater in Port Louis, Mauritius. August and September, with an average sea temperature of 23.7°C (74.7°F), are months with the coldest seawater in Port Louis.
• Curepipe - September »
  The month with the least rainfall in Curepipe is September, when the rain falls for 13.1 days and typically collects 12mm (0.47") of precipitation. August and September, with an average relative humidity of 73%, are the least humid months in Curepipe.
• Quatre Bornes - September »
  With September's arrival, Quatre Bornes notes an average high-temperature of a still moderately hot 23.7°C (74.7°F), closely following the trend of the preceding month. In Quatre Bornes, in September, during 13.1 rainfall days, 12mm (0.47") of precipitation is typically accumulated.
• Mahebourg - September »
  With an average sea temperature of 23.4°C (74.1°F), September is the month with the coldest seawater in Mahebourg, Mauritius. The month with the least rainfall in Mahebourg is September, when the rain falls for 12.8 days and typically collects 14mm (0.55") of precipitation.
• Saint Pierre - September »
  The months with the lowest humidity in Saint Pierre are August and September, with an average relative humidity of 73%. The arrival of September in Saint Pierre, Mauritius, records an average high-temperature of a still warm 23.7°C (74.7°F), closely related to the 23.5°C (74.3°F) observed in August.
• Le Hochet - September »
  August and September, with an average relative humidity of 73%, are the least humid months in Le Hochet. September's arrival in Le Hochet brings an average high-temperature of a still moderately hot 23.7°C (74.7°F), slightly deviating from August's 23.5°C (74.3°F).
• Goodlands - September »
  September in Goodlands observes an interesting shift in weather patterns, with rainfall nearly halved from 17mm (0.67") in August to 8mm (0.31"), the lowest in the year. August and September, with an average relative humidity of 73%, are the least humid months in Goodlands, Mauritius.
• Triolet - September »
  August and September, with an average relative humidity of 73%, are the least humid months in Triolet. In Triolet, during September, the rain falls for 10 days and regularly aggregates up to 8mm (0.31") of precipitation.
• Souillac - September »
  September is the month with the coldest seawater in Souillac, with an average sea temperature of 23.3°C (73.9°F). In Souillac the average seawater temperature in September is 23.3°C (73.9°F).
• Tamarin - September »
  The months with the coldest seawater in Tamarin are August and September, with an average sea temperature of 23.7°C (74.7°F). The months with the lowest humidity in Tamarin are August and September, with an average relative humidity of 73%.
• Plaine Magnien - September »
  The month with the least rainfall in Plaine Magnien is September, when the rain falls for 12.8 days and typically collects 14mm (0.55") of precipitation. The months with the lowest humidity in Plaine Magnien are July through September, with an average relative humidity of 74%.