Last updated: August 21, 2025
Experience the charming September weather in Grand Baie, Mauritius, where the average temperature hovers around 23°C (73°F). This month brings delightful conditions, featuring a maximum of 25°C (78°F) and a cozy minimum of 19°C (67°F). With 78% humidity, the air feels fresh and invigorating. Although precipitation is minimal, with only 17 mm (0.7 in) spread over 4 days, occasional showers add a refreshing touch to the tranquil atmosphere. September is the perfect time to enjoy the beautiful coastal scenery and vibrant culture of this stunning island paradise!
In September, Grand Baie, Mauritius, begins to transition into warmer temperatures, offering a refreshing shift from the cooler winter months. The average temperature settles at a comfortable 23°C (73°F), with daytime highs reaching up to 25°C (78°F). Nights become pleasantly crisp, with lows around 19°C (67°F). This month marks a gradual warming trend, as the island prepares for the balmy conditions of October and beyond. Overall, September provides a delightful balance of mild weather, making it an inviting time for visitors to enjoy the stunning scenery and outdoor activities that Grand Baie has to offer.
September in Grand Baie, Mauritius, marks a transition to drier conditions, as the region experiences its lowest monthly precipitation of the year with just 17 mm (0.7 in) of rain. This reduction is accompanied by only four days of rainfall, indicating a significant shift from the wet, humid months earlier in the year. Following a period of heavier rain in the earlier months, September offers a brief respite, paving the way for milder weather and clearer skies as the island transitions into the drier season. This trend of decreasing precipitation continues into October, where rainfall modestly increases again, yet it remains significantly below the wetter months of January through March.
In September, humidity in Grand Baie, Mauritius sits at a comfortable 78%, marking a transitional shift as the island moves from the cooler, drier months of winter into the warmer, more humid season. Following June and August, which boast lower humidity levels at 74%, September sees a gradual increase, indicating the approach of the year’s more humid periods. The humidity remains relatively stable throughout the months, but noticeable peaks occur during the summer months of January and February, when it reaches a high of 86%. This trend reflects the overall tropical climate of the region, where humidity levels are consistently high yet manageable, making September an ideal time for visitors to enjoy the beautiful beaches and vibrant local culture without the peak intensity of summer’s heat.
In September, the UV Index in Grand Baie, Mauritius reaches 11, categorized as extreme, with a burn time of just 10 minutes. This month marks a transition period as it departs from the peak summer months, yet the UV levels remain dangerously high, continuing a trend of intense sun exposure. The previous months showed a formidable UV Index, with values peaking at 17 in February and gradually descending through the cooler season. As we move into October, the UV Index rises again to 13, reaffirming that September offers little respite from the sun's strong rays. For visitors and residents alike, staying sun-safe is crucial. For more details, check out the Grand Baie UV Index.
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As September rolls into Grand Baie, Mauritius, the sun continues to shine brilliantly, delivering 330 hours of radiant daylight. This month reflects a slight dip from the peak of August's 327 hours, yet it maintains a splendid glow that invites locals and tourists alike to soak up the warmth. Remarkably, September stands as a precursor to the sun-drenched months ahead, with October promising a dramatic increase to 363 hours. The overall trend shows a gradual rise in sunlight hours as the year progresses, culminating in the vibrant energy of December with its impressive 392 hours. Whether you’re lounging on the beach or exploring the stunning coastal landscapes, September’s golden rays offer the perfect backdrop for unforgettable experiences in this tropical paradise.
As summer transitions into fall, September in Grand Baie, Mauritius offers a promising 65% chance of sunny weather, making it an appealing time for sun seekers. Following the peak sunny months of May and July, which boast chances of 69% and 66%, respectively, September continues this trend, ensuring plenty of bright days for beachgoers and outdoor enthusiasts. While the likelihood of sunshine dips slightly compared to the prior months, it remains relatively high, similar to October, reinforcing Grand Baie's reputation as a sunny getaway. As the year progresses, the chance of sun generally wanes by April, but September stands out as a favorable month to indulge in the tropical sunshine.
As September arrives in Grand Baie, Mauritius, the daylight duration settles at 11 hours, aligning with the steady trend of the previous several months. The island enjoys a balance of light, transitioning from the slightly shorter days of winter to the longer stretches of daylight that follow. With daylight peaking at 13 hours in December and January, the progression towards the warmer months begins to be felt. The consistency in daylight hours throughout the year underscores the tropical allure of Mauritius, inviting both locals and travelers to revel in the island's sun-kissed beauty. As the days begin to lengthen again in October, anticipation builds for the vibrant warmth of the coming summer months.
As September unfolds in Grand Baie, Mauritius, the gentle embrace of the September wind brings a notable shift in the atmosphere, with an average wind speed of 7.6 m/s (17 mph). This refreshing breeze is part of a broader trend observed in the region; following the mid-year peak in July, the wind speeds tend to moderate slightly, yet September maintains an invigorating pace, falling just shy of July's strong gusts. With the summer months behind, the winds of September hint at a transition, striking a balance that invites outdoor adventures while still allowing for tranquil moments by the shore. This blend of energy and calm perfectly captures the essence of September's charm in this tropical paradise.
Weather in Grand Baie varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Grand Baie, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinctly different weather patterns. In September, temperatures range from a mild minimum of 19°C (67°F) to a comfortable maximum of 25°C (78°F), with an average of 23°C (73°F). Precipitation is relatively low, at just 17 mm (0.7 in) over 4 days, and the humidity hovers around 78%. In contrast, January is hotter and wetter, with temperatures starting at a minimum of 24°C (75°F) and reaching up to 30°C (86°F), averaging 27°C (80°F). This month sees significantly higher precipitation at 162 mm (6.4 in) over 17 days, coupled with slighty higher humidity at 82%. For more specific details about the weather in January, check Grand Baie weather in January.
When comparing the weather in September and February, it's clear that February tends to be warmer and considerably wetter. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 25°C (78°F), with an average of 23°C (73°F) and relatively low precipitation of 17 mm (0.7 in) over just 4 days. In contrast, February boasts a higher temperature range, with a minimum of 24°C (76°F) and a maximum of 29°C (85°F), averaging 27°C (80°F). However, it also sees significant rainfall, with 147 mm (5.8 in) spread across 20 days. Furthermore, February's humidity is slightly higher at 86%, compared to September's 78%. For more detailed insights, you can visit Grand Baie weather in February.
When comparing the weather in September and March, September offers a more temperate experience with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 25°C (78°F). This month sees less precipitation, totaling just 17 mm (0.7 in) over approximately 4 days, making it a relatively dry period with a humidity level of 78%. In contrast, March presents a warmer climate, with temperatures varying from a minimum of 24°C (76°F) to a maximum of 30°C (86°F). March also experiences significantly higher rainfall, accumulating 148 mm (5.8 in) over about 19 days, accompanying a humidity level of 82%. For more details on March's climate, you can visit Grand Baie weather in March.
When comparing the weather in September and April, we see distinct differences. September offers more moderate temperatures, with a minimum of 19°C (67°F) and an average of 23°C (73°F), while April tends to be warmer, featuring a minimum of 23°C (73°F) and an average of 26°C (79°F). Additionally, April experiences significantly higher precipitation with 97 mm (3.8 in) over 18 days compared to September's 17 mm (0.7 in) across just 4 days. Humidity levels are also slightly elevated in April at 83%, compared to September's 78%. For more detailed information, you can visit Grand Baie weather in April.
In comparing the weather between September and May, we can observe some distinct differences. September generally experiences milder temperatures, with an average of 23°C (73°F) and a maximum of 25°C (78°F), while May is warmer, with average temperatures reaching 25°C (77°F) and highs of 28°C (82°F). Regarding precipitation, September is drier, receiving only 17 mm (0.7 in) over about 4 days, in contrast to May's wet conditions, which see 54 mm (2.1 in) spread over 9 days. Furthermore, humidity levels remain relatively similar, with September at 78% and May slightly higher at 80%. For a closer look at May's weather, you can check out Grand Baie weather in May.
When comparing the weather in September and June, both months present mild temperatures, with September featuring a minimum of 19°C (67°F) and a maximum of 25°C (78°F), while June has slightly warmer averages, with a minimum of 21°C (69°F) and a maximum of 26°C (79°F). Precipitation tends to be more frequent in June, with 32 mm (1.3 in) falling over 7 days, compared to September’s 17 mm (0.7 in) over just 4 days. Additionally, September experiences higher humidity at 78%, compared to 74% in June. For a more detailed insight into June weather, check out Grand Baie weather in June.
When comparing the weather in September to that of July, we notice some subtle differences. September typically features slightly lower temperatures, with a minimum of 19°C (67°F) and an average of 23°C (73°F), while July has a minimum temperature of 20°C (68°F) and a similar average of 22°C (73°F). Both months share a maximum temperature of 25°C (78°F). However, September is notably drier, receiving just 17 mm (0.7 in) of precipitation over 4 days, compared to July, which experiences more rainfall at 29 mm (1.1 in) over 7 days. Humidity levels are relatively similar, with September at 78% and July at 75%. For more details on July weather, please visit Grand Baie weather in July.
In comparing the weather of September to August, September presents slightly cooler temperatures with a minimum of 19°C (67°F) and an average of 23°C (73°F), while August starts with a minimum of 20°C (67°F) and an average of 22°C (72°F). The maximum temperature remains consistent at 25°C (78°F) for both months. However, September experiences less precipitation, totaling 17 mm (0.7 in) over 4 days, compared to August's 23 mm (0.9 in) over 6 days. Humidity is also marginally higher in September at 78%, compared to August's 74%. For a more detailed view of the weather in August, you can refer to Grand Baie weather in August.
September and October display subtle yet notable differences in weather patterns. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 25°C (78°F), with an average of 23°C (73°F), accompanied by 17 mm (0.7 in) of precipitation over 4 days and humidity hovering around 78%. In contrast, October sees a slight increase in warmth, with minimum temperatures at 20°C (69°F) and maximums reaching 26°C (79°F), while the average is 24°C (75°F). However, October experiences more rainfall, totaling 27 mm (1.0 in) across 8 days, and humidity remains comparable at 77%. For more detailed climate information, check out Grand Baie weather in October.
September and November both showcase warm temperatures, but November tends to be a bit hotter, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 28°C (82°F). In contrast, September's temperatures are slightly cooler, with averages between 19°C (67°F) and 25°C (78°F). Additionally, November experiences more precipitation, with about 33 mm (1.3 in) across 10 days, compared to September's 17 mm (0.7 in) over just 4 days. Both months maintain a humidity level of 78%, making them relatively similar in terms of moisture in the air. For a detailed look at November weather, you can check Grand Baie weather in November.
In comparison to September, December experiences noticeably warmer temperatures, with minimum averages rising from 19°C (67°F) to 23°C (74°F) and maximum averages increasing from 25°C (78°F) to 29°C (85°F). Additionally, December sees a significant uptick in precipitation, with 68 mm (2.7 in) over 16 days, compared to just 17 mm (0.7 in) across 4 days in September. Humidity remains relatively high in both months, slightly increasing from 78% in September to 81% in December. For more detailed insights into December's weather, you can check Grand Baie weather in December.
As September unfolds in Grand Baie, the weather begins to shift, offering a delightful respite from the colder months. With temperatures averaging around 23°C (73°F), the warmth is palpable, but it remains markedly cooler than the sweltering summer months ahead. Humidity hovers at a comfortable 78%, creating a pleasant atmosphere for outdoor activities. Although the occasional rainfall graces the island, with just 17 mm over about four days, it adds to the lush beauty of the region rather than dampening spirits. This month serves as a perfect transition into the more vibrant and humid months to come. For a deeper dive into the climatic patterns of the area, visit Grand Baie Climate.