Fall in Port Louis, Mauritius, really brings a change in the air. You’ll notice warm days gradually giving way to cooler evenings, with drier, clearer skies making everything feel a bit more relaxed.
Daytime highs usually drop from the mid-80s °F to the upper 70s °F. Nights cool off to the upper 60s °F. This is honestly one of the best times to experience the city’s tropical vibe without worrying about those heavy summer downpours.
As fall moves along, rain becomes less frequent, clouds break up, and the air loses some of its humidity. You’ll see more sunshine, and the steady trade winds help keep things comfortable, especially by the water.
The sea stays nice and warm for swimming, but some breezy days might make the shoreline feel a little livelier.
That mix of gentle warmth, lower humidity, and longer sunny stretches sets a great backdrop for exploring Port Louis. Maybe you’re into wandering through busy markets or catching views along the coast—either way, fall’s reliable weather makes it easy to get out and enjoy what the city has to offer.
Overview of Port Louis Fall Climate
You’ll notice the weather shifting from the wet, hot summer toward something cooler and drier. Temperatures mellow out, skies open up, and rainfall drops off fast, so day-to-day life just feels easier.
Tropical Monsoon Climate Characteristics
Port Louis sits in a tropical monsoon climate (Am), which means warmth sticks around all year, but wet and dry spells are pretty distinct.
Summers bring the heavy rain, winters dry out, and fall lands right in the middle—warm but less humid.
Average yearly temps hover around 73–77°F (23–25°C). In fall, highs reach 79–85°F (26–29°C), and lows fall between 69–76°F (20–24°C). The sea holds steady at 78–82°F (25–28°C), so coastal breezes stay pleasant.
Rain shapes the climate here. Annual rainfall sits near 980 mm (39 in), but fall only adds a small chunk to that. By late May, the chance of a rainy day drops under 10%, which is a huge difference from early March when it rains almost a third of the time.
Humidity changes, too. Fall starts out muggy almost every day, but by the end, only about 60% of days feel that way. You’ll find it much easier to be outside than during the sticky summer.
Fall Weather Patterns and Trends
You’ll see a steady cooling trend during fall. Highs drop about 6°F, and lows fall nearly 7°F. Nights get more comfortable, and those really hot days become rare.
Clouds thin out fast. In March, skies stay overcast more than half the time. By May, clear or mostly clear days show up about 87% of the time. Sunshine hours go up, even though daylight itself shortens by about 90 minutes across the season.
Rainfall drops off dramatically. Early fall can see over 4 inches of rain a month, but by the end, that number falls below 0.5 inches. That’s a real sign the dry season is here.
Winds pick up a bit, averaging 15 mph from the east. These breezes cool things down and help clear the air, especially in the afternoons. With lower humidity, fall just feels more comfortable for being outside.
Average Fall Temperatures in Port Louis
Temperatures in Port Louis cool off slowly during fall. Days stay warm but not too hot, and nights feel much more pleasant compared to summer.
Daily Highs and Lows During Fall
Daily highs start around 85°F (29°C) at the beginning of fall and slide down to about 79°F (26°C) by the end. It’s rare for highs to dip below 76°F (24°C) or climb above 87°F (31°C).
Lows follow a similar path, dropping from 76°F (24°C) early in the season to near 69°F (21°C) later on. Nights feel cooler but never really cold, so you probably won’t need heavy clothes.
The hottest part of the year brings lows near 76°F (24°C) and highs close to 85°F (29°C). The coolest stretch has lows around 67°F (19°C) and highs about 76°F (24°C). Fall lands right in the sweet spot between those extremes.
This slow cooling means you get warm afternoons and fresher evenings, which makes fall a great season for spending time outdoors.
Temperature Fluctuations and Extremes
Temperature swings in Port Louis during fall stay pretty mild. Day-to-night changes usually sit within 8–10°F (4–6°C), so you won’t get any big shocks.
Extreme heat doesn’t really happen. Highs above 87°F (31°C) are rare, and lows below 65°F (18°C) almost never show up. The weather stays steady, so planning is simple.
Compared to other tropical spots, Port Louis has fewer big jumps or drops in temperature. The Indian Ocean helps keep things balanced, so both highs and lows stay in a comfortable range.
You can pack light clothes and not worry much about big temperature swings from day to night.
Rainfall and Humidity in the Fall Season
In fall, Port Louis shifts from wet summer weather to a much drier, less humid feel. Rain falls off quickly as the season moves forward, and humidity drops too—though it can still feel muggy at the start.
Monthly Rainfall Patterns
Rain drops off fast in fall compared to summer. Early in the season, you might see about 4 inches (100 mm) of rain in a typical 31-day stretch. By late fall, that average falls to less than 0.5 inches (10–12 mm).
Rainy days get less common, too. Early on, about 3 out of 10 days bring measurable rain. By late fall, the odds drop to about 1 in 14 days.
Most showers don’t last long and usually pop up in the afternoon. Rain hits hardest in March, but by May, it’s rare. If you’re visiting, you’ll have a much better shot at dry days later in the season.
| Month | Avg. Rainfall | Chance of Wet Day |
|---|---|---|
| March | ~4.1 in (104 mm) | ~31% |
| April | ~2.0 in (50 mm) | ~18% |
| May | ~0.4 in (10 mm) | ~7% |
Humidity Levels and Seasonal Changes
Humidity drops more slowly than rain, but you’ll notice a difference. At the start of fall, nearly every day feels muggy or humid with dew points at 70°F (21°C) or even higher.
As weeks go by, muggy days get less frequent. By late May, only about 60% of days feel humid, so it’s a lot more comfortable. Evenings can still feel a little damp, thanks to the sea.
You’ll still get warm, moist air in March and April, especially during the day. But with less rain and a small drop in humidity, May stands out as a nice month for outdoor plans in Port Louis.
Sunshine, Cloud Cover, and Daylight Hours
During fall, skies in Port Louis clear up a lot. Overcast days become less common, and daylight hours drop, so you’ll want to keep an eye on sunset if you’re planning activities.
Partly Cloudy and Clear Days in Fall
Cloud cover clears out fast in fall. In early March, skies are overcast or mostly cloudy more than half the time. By late May, just about 13% of days stay cloudy—most are clear or partly cloudy.
The clearest stretch usually falls in late May, with clear, mostly clear, or partly cloudy skies nearly nine out of ten days. Late fall is pretty much the sunniest time for sightseeing or hitting the beach.
Plan for a real change in sky conditions from March to May. You’ll go from lots of cloudy days to mostly sunny weather, and that really changes the whole feel of the city and coast.
Daylight Duration and Seasonal Sun Patterns
Daylight hours shrink steadily during fall. Early March gives you about 12 hours and 29 minutes of daylight. By late May, you get around 11 hours. That’s almost 1.5 hours less daylight over the season.
Sunrise gets later, moving from 6:07 AM in early March to about 6:37 AM by late May. Sunset also comes earlier, from 6:36 PM to 5:37 PM.
Evenings start to feel shorter as fall goes on. If you want to fit in outdoor plans, you might need to adjust for those earlier sunsets and cooler evenings.
Wind and Sea Conditions During Fall
In fall, Port Louis gets steady trade winds and moderate sea conditions. Winds hit their peak strength, but the Indian Ocean stays warm enough for swimming and water sports.
Wind Speeds and Directional Trends
From June through September, winds really pick up in Port Louis. By fall, speeds often average 15–17 mph, with July and August being the windiest. September calms down a bit but still feels breezy compared to other times of the year.
The main winds come from the southeast trade winds, blowing in steady and reliable. These breezes cool off the coast, especially in the afternoons.
If you’re into sailing or windsurfing, these winds make things a lot more interesting. They might feel brisk on cooler evenings, though, so packing a light layer isn’t a bad idea.
For beach days, the wind helps cut the humidity, making the air feel nicer than during the sticky summer.
Sea Temperatures and Beach Appeal
The Indian Ocean around Port Louis stays warm all fall, with average sea temps between 75°F and 77°F (24°C to 25°C). Swimming, snorkeling, and diving all feel great in these conditions.
Those steady winds and warm water combine for excellent kite surfing and windsurfing, especially at the more exposed beaches. If you want calmer water, head for the protected lagoons.
With fewer rainy days in fall, the water gets clearer, so coral reef trips and boat rides are more appealing.
If you like quieter beaches, September is a nice choice—it balances warm seas, less rain, and slightly gentler winds compared to the middle of winter.
Travel Tips for Visiting Port Louis in Fall
Port Louis in fall keeps things mild, with highs around 24–26°C (75–79°F) and lower humidity than summer. Rain is lighter than earlier in the year, so you can get outside comfortably, though the occasional shower can still pop up.
Best Activities for Fall Weather
Fall is a great time to check out the Central Market in Port Louis. You can wander through stalls of spices, textiles, and fresh produce without sweating through the intense summer heat.
Cooler air makes walking tours of the Caudan Waterfront and the city’s colonial buildings a lot more enjoyable.
Day trips to places like Le Pouce Mountain are easier, too. Trails aren’t as muddy as they are in the wet season, and the temperatures make hiking less of a struggle.
If you’re into culture, the Blue Penny Museum or the Aapravasi Ghat UNESCO site are worth a visit, and you won’t be roasting outside.
Boat trips to nearby islands or dolphin-watching tours also get more popular in fall. The sea is calmer than during cyclone season, and clearer water means better snorkeling or diving—so you get a great look at the reefs and marine life.
Packing and Preparation Advice
Pack lightweight clothing like t-shirts, shorts, and other breathable fabrics. Toss in a light jacket or a sweater too, just in case the evenings get chilly.
Don’t forget a compact umbrella or rain jacket—short showers can pop up, especially around September.
If you want to wander through markets or maybe hike up some nearby hills, grab some comfortable walking shoes.
For any outdoor plans, you’ll need sunscreen, sunglasses, and a hat because the sun doesn’t really let up, even when it’s cooler.
Thinking about water activities? Bring reef-safe sunscreen and some quick-dry clothes.
A small backpack makes it easy to keep essentials like bottled water and snacks close while you roam around Port Louis.
Honestly, having a mix of light layers and a bit of rain protection just makes sense for the city’s unpredictable fall weather.