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September Weather in Grand Sable, Mauritius

Last updated: August 23, 2025

In September, the average temperature in Grand Sable, Mauritius hovers around 21°C (71°F), creating a pleasant climate for outdoor activities. Expect a comfortable range, with minimum temperatures dipping to 18°C (65°F) and maximums reaching 25°C (78°F). However, be prepared for 40 mm (1.6 in) of precipitation spread over 14 days, which contributes to an average humidity level of 80%. Dress accordingly to fully enjoy this delightful weather!

September Temperature in Grand Sable

In September in Grand Sable, the average temperature is 21°C (71°F), with maximums reaching 25°C (78°F) and minimums dipping to 18°C (65°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in Grand Sable: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Grand Sable, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand Sable, September typically has an average temperature of 21°C (71°F), with highs reaching up to 25°C (78°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979777472707071737578
Data source: Temperature data for Grand Sable generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Grand Sable

In Grand Sable in September, the precipitation amount is 40 mm (1.6 in) over a span of 14 days.

September Precipitation Trends in Grand Sable

The chart displays monthly precipitation patterns in Grand Sable, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Grand Sable, September typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec17419620113878606749404771132
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grand Sable

In Grand Sable in September humidity is 80%. With an average temperature of 21°C (71°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities feel more exhausting and requiring frequent breaks to stay hydrated.

September Average Humidity in Grand Sable

This chart illustrates the average monthly humidity levels in Grand Sable, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Grand Sable is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%86%82%84%80%76%77%76%80%79%81%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grand Sable

In Grand Sable in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Grand Sable.

Maximum UV Index Levels in Grand Sable for September

The chart shows the monthly maximum UV Index (UVI) for Grand Sable in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Grand Sable typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161614129781011131415
Data source: Grand Sable September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Grand Sable Compares to Other Months

Weather in Grand Sable varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Grand Sable, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Grand Sable, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)174 mm (6.8 inches)82%extreme
February Weather26°C (79°F)196 mm (7.7 inches)86%extreme
March Weather26°C (79°F)201 mm (7.9 inches)82%extreme
April Weather25°C (77°F)138 mm (5.4 inches)83%extreme
May Weather23°C (75°F)78 mm (3.1 inches)80%very high
June Weather22°C (72°F)60 mm (2.3 inches)76%high
July Weather21°C (71°F)67 mm (2.6 inches)77%very high
August Weather21°C (70°F)48 mm (1.9 inches)76%very high
September Weather21°C (71°F)40 mm (1.6 inches)80%extreme
October Weather23°C (73°F)47 mm (1.8 inches)79%extreme
November Weather24°C (75°F)71 mm (2.8 inches)81%extreme
December Weather25°C (78°F)132 mm (5.2 inches)82%extreme

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