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Monthly climate in Grand Baie, Mauritius

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Grand Baie features a tropical monsoon climate (Am). Temperatures typically range between 22 °C (72 °F) and 27 °C (81 °F) through the year, but rarely can drop to 19 °C (67 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 838 mm (33.0 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually. Grand Baie enjoys an average of 4015 hours of sunshine throughout the year, and daylight varies from 10 hours 55 minutes to 13 hours 18 minutes per day.

Monthly average temperatures in Grand Baie, Mauritius

The warmest months in Grand Baie are January, February and March, with daily mean temperatures ranging from 27 to 27 °C (80 - 81 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 22 to 23 °C (72 - 73 °F) throughout the day. On average each year, Grand Baie experiences 211 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Grand Baie. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(86°F)		29°C
(85°F)		30°C
(86°F)		30°C
(85°F)		28°C
(82°F)		26°C
(79°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		26°C
(79°F)		28°C
(82°F)		29°C
(85°F)
Mean maximum29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		27°C
(81°F)		26°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		26°C
(78°F)		27°C
(81°F)		28°C
(83°F)
Average high28°C
(82°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		26°C
(79°F)		24°C
(76°F)		24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		25°C
(77°F)		26°C
(79°F)		27°C
(81°F)
Daily mean27°C
(80°F)		27°C
(80°F)		27°C
(81°F)		26°C
(79°F)		25°C
(77°F)		23°C
(74°F)		22°C
(73°F)		22°C
(72°F)		23°C
(73°F)		24°C
(75°F)		25°C
(77°F)		26°C
(79°F)
Average low26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		25°C
(77°F)		24°C
(75°F)		23°C
(73°F)		22°C
(71°F)		21°C
(71°F)		21°C
(71°F)		22°C
(73°F)		24°C
(75°F)		25°C
(77°F)
Mean minimum24°C
(76°F)		25°C
(77°F)		25°C
(77°F)		24°C
(75°F)		22°C
(73°F)		22°C
(71°F)		20°C
(69°F)		20°C
(69°F)		20°C
(69°F)		21°C
(70°F)		22°C
(72°F)		24°C
(75°F)
Minimum24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		23°C
(73°F)		21°C
(71°F)		21°C
(69°F)		20°C
(68°F)		20°C
(67°F)		19°C
(67°F)		20°C
(69°F)		20°C
(68°F)		23°C
(74°F)

Compare climate in Grand Baie with other places

Compare temperature, precipitation, sunshine, UV index in Grand Baie, Mauritius with other places around the world.

Monthly average precipitation in Grand Baie, Mauritius

Grand Baie usually has the most precipitation in January, February and March, with an average of 18 rainy days and 153 mm (6.0 inches) of precipitation per month. The driest months in Grand Baie are August, September and October. On average, 22 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Grand Baie. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)162 (6.4)147 (5.8)148 (5.8)97 (3.8)54 (2.1)32 (1.3)29 (1.1)23 (0.9)17 (0.7)27 (1.0)33 (1.3)68 (2.7)
Average precipitation days (≥ 1 mm)172019189776481016

Monthly sunshine hours in Grand Baie, Mauritius

The sunniest months in Grand Baie are October, November and December, when the sun shines an average of 12 hours 15 minutes a day. Least sunny months in Grand Baie: January, June and July receive an average of 9 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Grand Baie. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours304328345317323298313327330363371392
Mean daily daylight hours13h 10m12h 44m12h 10m11h 36m11h 8m10h 55m11h 2m11h 26m11h 58m12h 32m13h 3m13h 18m

Solar UV radiation in Grand Baie, Mauritius

Grand Baie experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 15 - 17, which corresponds to the Extreme category of sun exposure. May, June and July are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Grand Baie UV Index data.

Average daily maximum UV levels by month for Grand Baie. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)161714129781011131415