Climate and monthly weather forecast
Grand Baie, Mauritius

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The climate of Grand Baie

In the heart of Mauritius, Grand Baie experiences an Am or a Tropical Monsoon climate according to the Köppen climate classification. Grand Baie witnesses a significant amount of rainfall during the year, even in the driest month. The temperature remains fairly stable with little fluctuation, making it a tropical paradise all year round.

The average high temperature ranges from 23.1°C (73.6°F) to 27.7°C (81.9°F), while the average low temperature varies from 22.1°C (71.8°F) to 27°C (80.6°F). Distinctly, Grand Baie does not experience drastic temperature drops or spikes throughout the year. The relative humidity remains somewhat constant, staying between 74% and 79% across the months. Rainfall varies noticeably, peaking at 140mm (5.51") in March and dropping down to mere 13mm (0.51") in September. Consequently, there's a notable wet and dry season, with the former usually lasting from January to May and latter from June till December.

The sea temperature closely follows the pattern of the air temperature, oscillating from 23.4°C (74.1°F) to 28.5°C (83.3°F). Days with bright sunshine range in number from 5.3 to 9.2 each month. Moreover, the UV Index usually remains constant at 6 or 7 indicating a high potential for skin damage from the sun's UV radiation.

The best time to visit Grand Baie

Undoubtedly, the best time to visit Grand Baie is during the dry season, which typically spans from June to December. During this time, the rainfall drops considerably, dwindling down to the lowest value of 13mm (0.51") in September. The sea temperature stays moderate, providing a pleasant condition for watersports enthusiasts. This period also introduces more sunshine days, making it an ideal time for sightseeing or lazing on the beaches. Furthermore, wind speeds are relatively high during these months, signifying good conditions for wind-related activities.

The worst time to visit Grand Baie

Visiting Grand Baie in the wet season, from January to May, is generally not recommended. This period experiences the highest rainfall, reaching its peak at 140mm (5.51") in March. Additionally, despite the fact that the city witnesses relatively high temperatures from 23.7°C (74.7°F) to 27.7°C (81.9°F) during these months, the increased humidity may make it feel uncomfortable. Consequently, potential for outdoor activities may be hampered by the frequent rain showers.

Spring weather in Grand Baie

In Grand Baie, the spring season - classically attributed to March, April, and May - experiences warm temperatures ranging from 23.7°C (74.7°F) to 27.6°C (81.7°F). Despite the fairly high temperatures, the city observes a high level of rainfall, specifically peaking at 140mm (5.51") in March. The humidity levels remain high adding a sense of warmth to the air. The sea temperature fluctuates between 24.3°C (75.7°F) and 28.5°C (83.3°F) which is inviting for swimming and water sports.

Summer weather in Grand Baie

Drawn out from June to August, the summer in Grand Baie introduces the dry season. The temperature variations remain slight, staying between 23.1°C (73.6°F) and 24.5°C (76.1°F), and rainfall is at its minimum during these months. The sea temperature slightly drops to remain between 23.4°C (74.1°F) to 25.1°C (77.2°F), offering a relieving dip during the warm summer days. Notably, the wind speeds increase to their yearly maximum, which may bring a cooling effect on the summer heat.

Autumn weather in Grand Baie

In the Autumn months of September to November, Grand Baie sees a gradual increase in temperatures and a minor rise in rainfall from 13mm (0.51") to 21mm (0.83"). Autumn evenings may feel a tad humid but the days offer ample sunlight for outdoor activities. However, the sea remains relatively cooler averaging from 23.4°C (74.1°F) to 25°C (77°F) during these months.

Winter weather in Grand Baie

Constituting December, January, and February, the winter period in Grand Baie is warm with the temperature oscillating between 23.1°C (73.6°F) and 27.7°C (81.9°F). This period greets the wet season with a considerable increase in rainfall from 54mm (2.13") to 78mm (3.07"). Despite the elevated levels of humidity and decreased sunshine hours, the sea temperature stays marginally warm, ranging between 26.7°C (80.1°F) to 28.3°C (82.9°F), providing opportunities for numerous water activities.

Weather in January

One can expect the weather in January to bear some resemblance to its neighboring months in Grand Baie, Mauritius. It boasts high temperatures, with the lowest temperature at 26.6°C (79.9°F), while reaching up to 27.1°C (80.8°F). Weather in January »

Weather in February

February in Grand Baie, Mauritius, holds an atmospheric similarity to January, with a slight rise in temperature. The heat and unquestionably significant humidity pose a quintessential feature of the February climate. Sea temperatures rise to 28.3°C (82.9°F), making it an ideal period for a variety of water sports and beach activities. Weather in February »

Weather in March

In March, weather conditions in Grand Baie, Mauritius, continue in the same tropical vein as the preceding two months. The high temperature records of 27.6°C (81.7°F) and the lowest at 26.9°C (80.4°F) affirm the continuation of the heat. Weather in March »

Weather in April

April sees a smaller reduction in the high temperatures compared to March in Grand Baie, Mauritius, standing at a high of 27.1°C (80.8°F) and a low of 26.4°C (79.5°F). Despite the mild decrease in temperature, April may still feel quite warm due to sustained humidity levels. Weather in April »

Weather in May

Quite unlike its predecessor, May brings about a noticeable drop in temperatures in Grand Baie, Mauritius. Officials recorded temperatures sliding from 24.9°C (76.8°F) to 25.8°C (78.4°F), indicating the onset of a cooler period. Weather in May »

Weather in June

The weather in June, in Grand Baie, Mauritius, deviates further from the warmer months of the year. With sea temperatures hitting a mild low of 25.1°C (77.2°F), seawater can feel pleasantly refreshing. Despite the shortened daylight, the duration of sunshine remains the same as May, a characteristic element of the June weather. Weather in June »

Weather in July

The weather transformation continues into July in Grand Baie, Mauritius. The decrease in temperature is felt in the range from 22.8°C (73°F) to 23.7°C (74.7°F), adding a slight chill to the climate. A sustained wind speed accompanies the weather shifts, providing a break from the earlier tropical heat and humidity. Weather in July »

Weather in August

August in Grand Baie, Mauritius, witnesses almost similar weather conditions to July. The sea temperature registers a mild low of 23.7°C (74.7°F), ensuring cozy sea bathing experiences for inhabitants and visitors. Sparse rain showers may still be seen, yet a considerable decline in rainfall generally means drier weather. Weather in August »

Weather in September

In September, the weather in Grand Baie, Mauritius, initiates a slow return to warmer conditions. Temperatures average between 22.4°C (72.3°F) and 23°C (73.4°F), indicating a nominal rise against August. Sunshine durations see a welcome increase, paving the way for sunbathing and other outdoor activities. Weather in September »

Weather in October

Weather conditions in October in Grand Baie, Mauritius, show a proximate likeness to September. The steady recovery in temperature is characterized by a range from 23.3°C (73.9°F) to 23.7°C (74.7°F). An increase in sunshine duration invites locals and tourists alike to adventurous outdoor activities. Weather in October »

Weather in November

November in Grand Baie Mauritius, ushers in a burgeoning return of the tropical climate. Sea temperatures begin to approach a cozy 25°C (77°F), perfect for both marine and beach activities. The additional hours of sunshine are perfect for those who prefer to bask in the sun's warmth. Weather in November »

Weather in December

December marks the return of warm tropical weather in Grand Baie, Mauritius. The month experiences temperatures fluctuating from 25.5°C (77.9°F) to 26.3°C (79.3°F), ushering in a distinctly pleasant climate. Daylight and sunshine hours see a slight increase, perfect for exploring the region's various attractions. Weather in December »
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Frequently asked questions

How many days does it rain in Grand Baie?

Throughout the year, in Grand Baie, Mauritius, there are 214.5 rainfall days, and 564mm (22.2") of precipitation is accumulated.

What is the month with the highest UV index in Grand Baie?

The months with the highest UV index in Grand Baie, Mauritius, are January through April, November and December, with an average maximum UV index of 7.

What is the hottest time of year in Grand Baie?

February, with its high-temperature average of 27.7°C (81.9°F) and a low-temperature average of 27°C (80.6°F), is the warmest month.

What is the rainiest month in Grand Baie?

The month with the most rainfall in Grand Baie, Mauritius, is March, when the rain falls for 21.9 days and typically aggregates up to 140mm (5.51") of precipitation.

What month is the sea warmest in Grand Baie?

With an average sea temperature of 28.5°C (83.3°F), March is the month with the warmest seawater.

What are the months with the lowest UV index in Grand Baie?

The months with the lowest UV index in Grand Baie are May through October, with an average maximum UV index of 6.

What is the month with the shortest days in Grand Baie?

With an average of 10h and 54min of daylight, June has the shortest days of the year.

What is the month with the least sunshine in Grand Baie?

The month with the least sunshine in Grand Baie is July, with an average of 6.1h of sunshine.

What is the least humid month in Grand Baie?

With an average relative humidity of 74%, August is the least humid month in Grand Baie, Mauritius.

What is the coldest time of year in Grand Baie?

Temperature records in Grand Baie mark September as the coldest month, with highs averaging 23°C (73.4°F) and lows at 22.4°C (72.3°F).

What is the driest month in Grand Baie?

The month with the least rainfall in Grand Baie is September, when the rain falls for 17 days and typically collects 13mm (0.51") of precipitation.

What is the month with the coldest sea water in Grand Baie?

With an average sea temperature of 23.4°C (74.1°F), September is the month with the coldest seawater.

What are the most humid months in Grand Baie?

The months with the highest humidity in Grand Baie are November and December, with an average relative humidity of 79%.

When are the longest days in Grand Baie?

With an average of 13h and 18min of daylight, December has the longest days of the year in Grand Baie.

Is there Daylight Saving Time (DST) in Grand Baie?

Grand Baie does not observe Daylight Saving Time (DST). +04 timezone is used over the entire year.

What month has the most sunshine in Grand Baie?

The month with the most sunshine is December, with an average of 9.8h of sunshine.

Average temperature
Grand Baie, Mauritius

Average temperature - Grand Baie, Mauritius

The warmest month (with the highest average high temperature) is February (27.7°C).
The month with the lowest average high temperature is September (23°C).

The month with the highest average low temperature is February (27°C).
The coldest month (with the lowest average low temperature) is August (22.1°C).

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Average pressure
Grand Baie, Mauritius

Average pressure - Grand Baie, Mauritius

The month with the highest atmospheric pressure is August (1020.2mbar).
The month with the lowest atmospheric pressure is February (1011mbar).

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Average wind speed
Grand Baie, Mauritius

Average wind speed - Grand Baie, Mauritius

The windiest month (with the highest average wind speed) is August (33.2km/h).
The calmest month (with the lowest average wind speed) is February (24km/h).

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Average humidity
Grand Baie, Mauritius

Average humidity - Grand Baie, Mauritius

The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is August (74%).

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Average rainfall
Grand Baie, Mauritius

Average rainfall - Grand Baie, Mauritius

The wettest month (with the highest rainfall) is March (140mm).
The driest month (with the least rainfall) is September (13mm).

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Average rainfall days
Grand Baie, Mauritius

Average rainfall days - Grand Baie, Mauritius

The month with the highest number of rainy days is March (21.9 days).
The month with the least rainy days is November (11.6 days).

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Average sea temperature
Grand Baie, Mauritius

Average sea temperature - Grand Baie, Mauritius

The best month for swimming (with the highest average sea temperature) is March (28.5°C).
The coldest month (with the lowest average sea temperature) is September (23.4°C).

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Average daylight / Average sunshine
Grand Baie, Mauritius

Average daylight / Average sunshine - Grand Baie, Mauritius

The month with the longest days is December (Average daylight: 13h and 18min).
The month with the shortest days is June (Average daylight: 10h and 54min).

The month with the most sunshine is December (Average sunshine: 9h and 48min).
The month with the least sunshine is July (Average sunshine: 6h and 6min).

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Average sunshine days
Grand Baie, Mauritius

Average sunshine days - Grand Baie, Mauritius

The month with the most sunshine days is November (9.2 days).
The month with the least sunshine days is February (4.4 days).

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Average UV index
Grand Baie, Mauritius

Average UV index - Grand Baie, Mauritius

The months with the highest UV index are January, February, March, April, November and December (UV index 7).
The months with the lowest UV index are May, June, July, August, September and October (UV index 6).

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Average visibility
Grand Baie, Mauritius

Average visibility - Grand Baie, Mauritius

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Grand Baie, Mauritius

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