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September Weather in Grand Bois, Mauritius

Last updated: August 23, 2025

In September, the average temperature in Grand Bois, Mauritius is a pleasant 22°C (71°F), with a minimum of 18°C (65°F) and a maximum of 25°C (78°F). Expect about 33 mm (1.3 in) of precipitation spread over 12 days, and enjoy the comfortable average humidity of 78%. 🌦️

September Temperature in Grand Bois

In September in Grand Bois, the average temperature is 22°C (71°F). Maximums can reach 25°C (78°F), and minimums can be as low as 18°C (65°F). This pleasant climate makes Grand Bois an ideal destination for travelers seeking comfortable weather during their visit.

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

The chart illustrates September temperature patterns in Grand Bois, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand Bois, September typically has an average temperature of 22°C (71°F), with highs reaching up to 25°C (78°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979777572717071737578
Data source: Temperature data for Grand Bois 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 Bois

In Grand Bois in September, the total precipitation amounts to 33 mm (1.3 in) over the course of 12 days.

September Precipitation Trends in Grand Bois

The chart displays monthly precipitation patterns in Grand Bois, 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 Bois, September typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec15417617613469516343334262120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grand Bois

In Grand Bois in September humidity is 78%. With an average temperature of 22°C (71°F), this humidity feels like a warm, tropical embrace that can make even short walks feel sticky and intense, leaving travelers seeking shade and a refreshing drink to cool down.

September Average Humidity in Grand Bois

This chart illustrates the average monthly humidity levels in Grand Bois, 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 Bois is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%86%82%83%80%74%75%74%78%77%78%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grand Bois

In Grand Bois 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 Bois.

Maximum UV Index Levels in Grand Bois for September

The chart shows the monthly maximum UV Index (UVI) for Grand Bois 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 Bois typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161614129781011131415
Data source: Grand Bois 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 Bois Compares to Other Months

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

This table compares monthly weather conditions in Grand Bois, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)154 mm (6.0 inches)82%extreme
February Weather26°C (79°F)176 mm (6.9 inches)86%extreme
March Weather26°C (79°F)176 mm (6.9 inches)82%extreme
April Weather25°C (78°F)134 mm (5.3 inches)83%extreme
May Weather24°C (75°F)69 mm (2.7 inches)80%very high
June Weather22°C (72°F)51 mm (2.0 inches)74%high
July Weather21°C (71°F)63 mm (2.5 inches)75%very high
August Weather21°C (71°F)43 mm (1.7 inches)74%very high
September Weather22°C (71°F)33 mm (1.3 inches)78%extreme
October Weather23°C (73°F)42 mm (1.6 inches)77%extreme
November Weather24°C (75°F)62 mm (2.4 inches)78%extreme
December Weather26°C (78°F)120 mm (4.7 inches)81%extreme

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