Winter in Grand Baie brings a gentle, comfortable shift from the hot season. Daytime highs usually hover in the mid-70s °F (about 24°C), and nights cool down into the upper 60s °F (around 20°C).
The weather feels mild, not cold, so you can enjoy the outdoors without sweating or worrying about heavy rain.
Rainfall drops off a lot in winter. July tends to be the driest month.
Skies get clearer, and humidity drops compared to the wetter season, making it much nicer for exploring the coast or just hanging out by the water.
Gentle breezes, especially in July and August, add to that refreshing vibe.
Winter brings shorter days compared to summer, but you still get plenty of sunshine.
You get a nice mix of warmth, light, and comfort, which makes it a great time for activities—beach days, boat trips, or just wandering the town at a slower pace.
Overview of Winter Weather in Grand Baie
Grand Baie’s winter comes with mild temperatures, less rain, and steady trade winds.
You’ll find comfortable conditions for being outside, with cooler nights and lower humidity than during the hot months.
Typical Winter Climate Patterns
In winter, Grand Baie usually sees daily highs around 75–77°F (24–25°C).
Lows dip to about 67–68°F (19–20°C), so evenings feel pleasant and you won’t need heavy clothes.
Rainfall stays low.
You’ll get around 0.3 inches (8 mm) of rain over a 31‑day stretch, and the odds of a wet day are slim.
Skies are mostly clear, with cloud cover sticking to about 10–12% of the season.
Humidity drops off quite a bit in winter.
At first, the air can feel a bit muggy, but by August, only about 25–30% of days feel humid at all.
That drier air really helps with walking, sightseeing, and beach time.
Winds keep things lively.
They average 16 mph (25 km/h) and peak in late July.
Breezes usually blow in from the east, which keeps things fresh and balances out the warm sun.
Comparison to Other Seasons
Winter looks different from the hot, rainy summer months.
In January and February, highs reach 85°F (29°C), and rain can be frequent, with some months getting more than 140 mm.
In winter, it’s cooler and drier, and storms are rare.
Daylight changes too.
June gives you about 10 hours 55 minutes of light, and by late August, days stretch to 11 hours 42 minutes.
That extra daylight in late winter feels pretty nice.
The sea cools a bit, dropping from 78°F (25°C) in June to 74°F (23°C) in August.
Still, the water stays warm enough for swimming or diving.
Compared to spring or autumn, winter really stands out for its steady dry weather, lower humidity, and reliable breezes.
You’ll get fewer rain interruptions, making it one of the best times to visit Mauritius if you want predictable weather.
Average Winter Temperatures
Winter in Grand Baie feels warm compared to a lot of other places, but you’ll notice the air is a bit cooler, especially at night.
Temperatures only shift a few degrees as the season goes on, so you get steady, comfortable days for being outside or relaxing by the sea.
Daytime and Nighttime Temperature Ranges
During June, July, and August, Grand Baie’s daytime temperatures usually fall between 23°C and 27°C (73°F to 81°F).
The heat isn’t harsh, and lower humidity helps the air feel pleasant.
At night, it cools just a bit—think 21°C to 23°C (70°F to 73°F).
That slight dip feels refreshing after a sunny day.
You probably won’t need heavy clothes, but a light sweater or long sleeves can come in handy in the evenings.
The small gap between day and night temps means the weather stays stable.
You can plan beach days, water sports, or evening walks without stressing about sudden changes.
Monthly Temperature Breakdown
Winter kicks off in June, with average highs near 24°C (75°F) and lows around 22°C (72°F).
The sea sits at about 25°C (77°F), so swimming still feels great.
July, the coolest month, brings daytime averages down a bit to 23°C (73°F), with nights at 21°C (70°F).
Winds pick up, so evenings can feel cooler than the numbers suggest.
In August, things start to warm up again.
Highs go back to about 24°C (75°F), and lows stay close to 22°C (72°F).
You get more sunshine, so there are more warm days for outdoor plans.
| Month | Average High | Average Low | Sea Temp |
|---|---|---|---|
| June | 24°C / 75°F | 22°C / 72°F | 25°C / 77°F |
| July | 23°C / 73°F | 21°C / 70°F | 24°C / 75°F |
| August | 24°C / 75°F | 22°C / 72°F | 24°C / 75°F |
Rainfall and Precipitation Patterns
Winter in Grand Baie brings much drier weather than summer.
You’ll see rain levels drop sharply, with shorter, lighter showers and just a handful of rainy days.
Average Rainfall Amounts
From June to September, Grand Baie barely gets much rain at all.
June averages about 32 mm (1.3 in), July about 29 mm (1.1 in), August around 23 mm (0.9 in), and September is the driest with only 17 mm (0.7 in).
That’s a far cry from the wettest months like January, when totals can top 160 mm (6.4 in).
Winter is really the driest time of year, so it’s easier to plan outdoor activities.
Rain usually comes as quick showers, not long storms.
Heavy downpours are rare, and the ground dries fast.
That makes winter a great time to explore the coast without getting rained out.
Rainy Days Frequency
You’ll notice fewer rainy days in winter.
June and July average about 7 rainy days each, August about 6, and September just 4.
In January, you might see rain on 17 or more days.
So, you’ll get more sunshine and longer dry stretches.
Even when it does rain, it’s usually light and over quickly.
Most days in winter stay dry, with only an occasional shower.
That’s perfect for beach trips, boat rides, and other outdoor plans without worrying much about the weather.
Sunshine and Daylight Hours
In winter, Grand Baie gets a mix of shorter days and a bit less sunshine compared to the rest of the year.
Daylight still lasts long enough for outdoor fun, but clouds and the odd shower can cut down on bright hours.
Average Daily Sunshine
Winter brings about 9 to 10 hours of sunshine per day in Grand Baie.
That’s a little less than the peak months—October through December can see over 12 hours.
Clouds show up more often in December through February, limiting direct sun.
Still, you’ll get enough clear periods for beach time, sightseeing, or water sports.
Here’s a quick look at sunshine hours:
| Month | Avg. Sunshine Hours per Day |
|---|---|
| December | 9.5 hours |
| January | 9.2 hours |
| February | 9.3 hours |
You might get the occasional overcast sky, but you can still plan most outdoor activities without too much trouble.
Winter Daylight Duration
Daylight in winter ranges from about 11 to 13 hours, depending on the month.
December has the longest days at just over 13 hours, while February drops closer to 12.
That steady daylight gives you plenty of time each day to get out and explore, even if clouds cut into the actual sunshine.
Unlike places far from the equator, day length here doesn’t swing wildly.
Consistent daylight makes it easy to plan trips, boat rides, or hikes without worrying about early darkness.
Evening activities work out well too, since sunset usually happens late enough for outdoor dining or a stroll before night falls.
Humidity and Comfort Levels
Winter in Grand Baie brings steady warmth with a noticeable, but not overwhelming, humidity.
The air doesn’t feel as heavy as in the wet season, but moisture still shapes how comfortable you’ll feel outside, especially if you’re in the sun or by the water.
Humidity Trends in Winter
Winter runs from June through August in Grand Baie.
During this stretch, relative humidity usually sits between 74% and 78%—a bit lower than in the wet months, but still higher than in a lot of other places.
Mornings often feel cooler and less humid, while afternoons bring a slight uptick in moisture.
Unlike the peak wet season from January to March, winter humidity doesn’t usually come with heavy rain, so the air feels less oppressive.
Stable temperatures—around 23°C to 25°C (73°F to 77°F)—paired with moderate humidity make the season pretty tolerable for most visitors.
Even though it’s a bit moist, steady breezes from the Indian Ocean help keep things comfortable.
Effect on Outdoor Activities
Humidity in winter affects how you plan your days in Grand Baie.
Walking tours, cycling, or checking out local markets feel a lot more pleasant than in the sticky wet season, since the air is drier and rain is rare.
Water activities like snorkeling or sailing are great too, with sea temps holding around 23°C to 25°C (74°F to 77°F).
Humidity doesn’t get in the way much, though you might feel warm after a while in the sun.
If you’re sensitive to moisture, early mornings and evenings are your best bet for outdoor plans.
Midday can feel warmer, thanks to the combo of humidity and strong UV, so light clothes and staying hydrated are smart moves.
Unique Weather Events and Considerations
Winter in Grand Baie is cooler and less humid than summer, but it still brings its own weather quirks that can affect your plans.
You’ll want to watch out for strong seasonal winds and the occasional cloudy spell, plus the rare but memorable weather events that sometimes pop up along the coast.
Windy and Cloudy Days
From late May through September, trade winds pick up along Mauritius’s northern coast.
In July, average wind speeds can reach 17–18 mph, making it the windiest time of year.
These breezes keep things comfortable, but they can make the sea choppy, which sometimes affects swimming, sailing, or diving.
Cloud cover changes too.
August and September are some of the clearest months, with skies clear or mostly clear about 89% of the time.
You’ll get long stretches of sunshine, though a few cloudy moments still happen.
If you’re planning water activities, check the local forecast for wind conditions.
Strong gusts can make boat trips rough and sometimes limit snorkeling visibility.
On the flip side, steady winds are perfect for kite surfing and windsurfing—both are really popular here in winter.
Rare Weather Phenomena
You’ll never see snow or frost in Grand Baie, thanks to its tropical climate. Still, a few rare weather events pop up now and then.
Short-lived tropical disturbances or the outer edge of a cyclone sometimes affect the area, even during winter. Direct hits almost never happen, but heavy rain and rough seas can show up out of nowhere.
Sometimes, strong winds push sea spray inland, leaving a salty film on cars and buildings near the water. You might catch sudden, brief showers too, but they usually end as quickly as they start.
If you’re staying close to the shore or planning something outdoors, it’s smart to keep an eye on the forecast.
Travel Tips for Winter in Grand Baie
Winter here means warm days, mild humidity, and less rain than the rest of the year. You’ll get comfortable days for being outside, with evenings that can feel a bit cooler, especially near the ocean.
Best Activities for Winter Conditions
Go for water sports like snorkeling, diving, or sailing—sea temperatures stick around 26–28°C (79–82°F). The water feels warm enough for long swims, and visibility is usually good for checking out the reefs.
Winds pick up in winter, which is great news if you love windsurfing or kite surfing. If you’re after something calmer, boat trips to nearby islands like Île aux Cerfs or Île aux Benitiers are a good bet, and they’re not as busy this time of year.
On land, winter works well for hiking in Black River Gorges National Park. The air feels cooler, so walking the trails is more comfortable. Outdoor markets and seaside dining get a lot more pleasant without all that sticky humidity.
Evenings sometimes turn breezy, so you might just want to grab dinner at a beachfront spot or wander along the marina.
Packing Recommendations
Pack light, breathable clothes like cotton shirts and shorts for the day. The sun gets pretty intense all year, so toss in sunscreen, sunglasses, and a wide-brim hat to stay protected.
For evenings, grab a light sweater or jacket—the wind can make things a bit chilly. Even though it doesn’t rain much, a thin rain jacket comes in handy since those quick showers still pop up.
Bringing reef-safe sunscreen and water shoes makes sense if you’re planning on water activities. If hiking or wandering inland sounds good, you’ll want comfy walking shoes.
A small travel adapter helps keep your devices charged, and insect repellent is a smart pick for nights by the water.