Spring in Port Louis, Mauritius brings steady warmth, shifting skies, and a gradual rise in humidity that shapes how you experience the season.
Daytime highs usually climb from the upper 70s to low 80s Fahrenheit, and nights stay mild in the upper 60s to low 70s.
This balance of comfortable temperatures and increasing daylight makes spring a great time to explore the city and coastline.
As the season moves along, rainfall gradually increases, but showers stay light compared to the heavy summer months.
Winds ease up from their winter strength, though breezes from the east still bring a refreshing feel along the waterfront.
The air grows more humid, and by late spring, you’ll probably notice a shift toward muggy conditions, especially during the day.
The ocean warms up as spring goes on, making water activities more pleasant.
With more sunshine, longer days, and rising sea temperatures, Port Louis offers comfort and subtle seasonal changes that set the stage for both outdoor adventures and relaxed coastal living.
Spring Climate Overview in Port Louis
Spring in Port Louis brings warmer days, rising humidity, and longer daylight hours.
You’ll notice a steady shift from the drier winter season toward the wetter summer months, with more cloud cover, higher sea temperatures, and a greater chance of rain.
General Climate Classification
Port Louis has a tropical monsoon climate.
Temperatures stay warm year-round with little seasonal variation, but rainfall patterns shift between wetter and drier months.
During spring, daily highs usually range from 76°F to 83°F (24°C to 28°C).
Lows rise from 67°F to 73°F (19°C to 23°C).
Nights stay mild, and frost or cold weather never shows up here.
Humidity increases quickly as the season moves forward.
At the start of spring, muggy conditions are less common, but by late November, you’ll feel sticky air most days.
The Indian Ocean plays a major role, keeping the climate moderate but humid.
This climate makes Port Louis comfortable for outdoor activities, though you’ll want to prepare for more heat and moisture as summer approaches.
Typical Spring Weather Patterns
Spring in Port Louis is known for increasing cloud cover.
Early in the season, skies stay mostly clear, but by late spring, cloudiness becomes common.
The chance of overcast conditions rises from about 10% in early September to around 37% in late November.
Rainfall also picks up.
At the start of spring, average rainfall sits at about 0.3 inches per month, but by the end, it climbs closer to 0.9 inches.
Showers are usually brief, though they become more frequent as the wet season nears.
Winds shift slightly but blow mostly from the east.
Average wind speeds ease from about 16 mph in early spring to 13 mph near the end of the season.
This reduction makes things feel less breezy compared to the windier winter months.
Sea temperatures rise steadily, warming from 74°F to 78°F (23°C to 26°C).
Spring is a great time for swimming, diving, or boating.
Comparison to Other Seasons
Compared to winter, spring feels warmer, more humid, and less windy.
Winter days often stay near 72°F to 76°F, with drier air and clearer skies.
By spring, you’ll notice both higher temperatures and longer daylight, which stretches from about 11 hours 40 minutes to over 13 hours.
Spring also serves as a transition into the wet summer season.
Summer in Port Louis is hotter, with daily highs often at 85°F (29°C) and much higher rainfall.
Humidity peaks, and rain showers or storms become frequent.
In contrast, autumn tends to mirror spring but in reverse.
Temperatures slowly cool, winds strengthen, and rainfall decreases as the region moves back toward the drier winter months.
Spring is one of the most balanced times in Port Louis, offering warmth without the heavy rains of summer or the stronger winds of winter.
Average Daytime and Nighttime Temperatures
Spring in Port Louis brings a gradual warming trend with mild nights and comfortable days.
You’ll notice differences between early and late spring, with temperatures rising steadily as the season moves along.
Monthly Temperature Trends
During early spring, average daytime highs sit around 76°F (24°C).
By late spring, these highs climb to about 83°F (28°C).
Nighttime lows follow a similar pattern, increasing from 67°F (19°C) to 73°F (23°C).
The shift is gradual, so you don’t feel sudden changes from week to week.
You’ll notice slightly warmer afternoons and less cool evenings as summer approaches.
This warming trend makes spring a comfortable season for outdoor activities.
The temperatures stay moderate compared to the hotter months, which often reach the upper 80s.
Temperature Ranges in Spring
You’ll rarely see temperatures drop below 63°F (17°C) at night or rise above 85°F (29°C) during the day in spring.
This narrow range means the climate feels stable and predictable.
Daytime highs usually stay within a 7°F band, while nighttime lows vary by about 6°F across the season.
These small shifts give a sense of consistency, which is nice if you prefer steady weather.
The mix of warm days and mild nights makes it easy to plan both daytime sightseeing and evening dining outdoors without big temperature swings.
Spring vs Annual Temperature Averages
When you compare spring to the rest of the year in Port Louis, you’ll see how balanced the season is.
The annual range typically runs from 67°F (19°C) to 85°F (29°C), and spring fits neatly within that span.
In summer, daytime highs often push toward the upper end of the scale.
Winter months sit closer to the lower end.
Spring falls right in between, offering a middle ground.
Because the climate in Port Louis stays warm year-round, spring doesn’t bring extreme contrasts.
It provides a steady rise in warmth that prepares you for the hotter and more humid summer season.
Rainfall and Rainy Days During Spring
During spring in Port Louis, rainfall levels drop compared to the wettest months, but you can still expect some showers.
The season is marked by lighter precipitation, moderate humidity, and a balance between sunny and cloudy days.
Monthly Precipitation Totals
Spring in Port Louis spans September, October, and November.
These months receive relatively low rainfall compared to the earlier wet season.
On average, September gets around 34 mm, October about 49 mm, and November slightly higher, but still under 100 mm.
This range makes spring one of the drier periods of the year.
Rain usually comes in brief showers rather than long, heavy downpours.
You’ll see that total monthly rainfall is less than half of what falls in peak wet months like January or February.
Here’s a simple breakdown:
| Month | Average Rainfall (mm) |
|---|---|
| September | ~34 mm |
| October | ~49 mm |
| November | ~70–90 mm |
These totals give you a good idea of what to expect if you’re planning outdoor activities.
Frequency of Rainy Days
Even though rainfall amounts are lower in spring, you should still expect some rainy days.
September averages about 10–12 days with measurable rain.
October sees a slight increase, with around 12–14 rainy days.
By November, the number rises again, reaching close to 15 days.
While showers are more frequent than you might expect, they’re generally lighter and shorter.
You can often enjoy long stretches of dry weather between showers.
For planning, rainy days in spring are spread out rather than concentrated, so you’re less likely to face continuous rain.
This makes it easier to schedule sightseeing, beach visits, or hiking without major disruptions.
Spring Rainfall Compared to Wettest and Driest Months
When you compare spring to January, the wettest month in Port Louis, spring rainfall is much lower.
January alone can bring nearly 189 mm of rain over about 17 days, which is several times higher than September or October.
July is among the driest months, with only 28 mm of rain spread over about 15 days.
Spring sits between these two extremes, offering a balance of light showers and comfortable dry spells.
This balance makes spring a favorable time to visit.
You avoid the heavy rains of the cyclone season while also experiencing more predictable conditions than in the heart of the dry season.
For travelers, this means fewer weather-related interruptions and a better chance of enjoying outdoor activities.
Relative Humidity and Comfort Levels
Spring in Port Louis brings steady warmth with only small swings in temperature, but air moisture plays a key role in how comfortable you feel.
Humidity levels stay fairly high, which can affect outdoor activities, sightseeing, and even how you plan your day.
Average Spring Humidity
During spring, relative humidity in Port Louis generally ranges between 73% and 75%.
The air often feels moist, though not as heavy as in the peak rainy months.
Mornings tend to feel more humid, while afternoons may feel slightly drier due to stronger sunlight and wind.
Even with the seasonal drop in rainfall, the air rarely feels crisp or dry.
The combination of warm temperatures and steady humidity makes light clothing and regular hydration important.
If you’re sensitive to muggy conditions, you may still find the spring months more comfortable than summer, when humidity combines with higher heat.
Most hotels and restaurants use fans or air conditioning to balance the moisture in the air.
Outdoors, shaded areas and breezy coastal spots help reduce the sticky feeling that comes with elevated humidity.
Humidity Variation Month by Month
Humidity doesn’t change drastically between September, October, and November, but small shifts influence how you experience the weather.
- September: Around 73%, paired with the lowest rainfall of the year. The air feels less oppressive, and evenings are more pleasant.
- October: Slight rise toward 74%. Rain showers become more common, adding brief periods of dampness.
- November: About 75%. Higher temperatures and more frequent rain make the air feel heavier compared to early spring.
These gradual changes mean that September often feels the most comfortable, while November leans closer to the humid summer pattern.
If you prefer drier conditions, early spring is the best choice for outdoor sightseeing and walking tours.
Wind Speed Patterns in Spring
Spring in Port Louis brings steady breezes that shape how comfortable the season feels.
You’ll notice gentle winds most days, but the strength and consistency shift slightly from one month to the next.
These changes matter for outdoor plans, sailing, and even how humid the air feels.
Average Wind Speed by Month
During spring, the average wind speed in Port Louis stays moderate.
In March, winds often reach about 16 mph, making it one of the breezier months of the year.
April tends to ease slightly, with speeds closer to 14–15 mph, while May usually records around 13–14 mph.
This pattern shows a gradual calming as the season moves forward.
The difference between early and late spring is noticeable if you spend time outdoors.
Stronger winds in March can make evenings feel cooler despite warm temperatures.
By May, the lighter winds allow the air to feel more humid and still.
Sailors and beach visitors often prefer the earlier part of spring when the breeze is more reliable.
If you enjoy calmer conditions, the second half of the season offers gentler airflow that makes walking or dining outside more comfortable.
Comparison to Other Times of Year
When you compare spring to other seasons, the wind feels moderate rather than extreme.
The windiest months in Port Louis are usually June and August, averaging close to 19–20 mph.
These stronger gusts can make winter and early summer more challenging for outdoor leisure.
In contrast, November often brings the calmest winds at around 13–14 mph, which is lighter than most of spring.
Spring sits in the middle range, offering a balance between breezy and calm conditions.
For travelers, this balance is useful.
You avoid the strongest gusts of the cooler months while still enjoying enough wind to keep the air from feeling stagnant.
Spring is a practical choice for outdoor activities that benefit from steady but not overpowering breezes.
Additional Weather Factors in Spring
You’ll notice steady changes in daylight, sea warmth, and comfort levels during spring in Port Louis. These shifts really shape how much time you’ll want to spend outside, what kinds of activities are appealing, and honestly, when it feels best to visit.
Sunshine Hours and Day Length
In Port Louis, daylight gets longer as spring moves along. Early in the season, you see about 11 hours and 43 minutes of daylight, but by the end, it’s closer to 13 hours and 15 minutes.
That means more time to wander beaches, check out local markets, or just soak up the city’s culture.
Sunrise comes earlier, starting around 6:18 AM in early September and shifting to about 5:21 AM by late November. Sunset stretches later too, moving from 6:01 PM to 6:36 PM.
These changes offer well-balanced daylight, not too short or too long—nothing like those wild swings you get in higher latitudes.
You’ll usually get reliable sunshine. Even though cloud cover rises from about 10% to 37%, most days still bring plenty of clear skies.
It’s honestly a great time for sightseeing or grabbing a meal outdoors.
Sea Temperature Trends
The Indian Ocean around Port Louis warms up bit by bit in spring. Average surface water temperatures start at about 74°F (23°C) in early September and climb to around 78°F (26°C) by late November.
Swimming and snorkeling start off refreshing, then feel warmer and more inviting as the months go by.
Since the sea almost never drops below 72°F, you can jump in any time of year. But those warmer late-spring days? They’re especially nice for diving, with clearer water and more marine life hanging out by the reefs.
Best Times to Visit Based on Weather
If you want mild weather with less humidity, go for early spring. Temperatures feel comfortable, and muggy days don’t show up as often.
In September, you usually get clearer skies before the clouds start rolling in.
By mid to late spring, humidity really jumps up, and muggy conditions start to take over. Rainfall picks up too, but showers stay short and pretty light—definitely not as heavy as in the wettest months.
Thinking about beach trips or water sports? October to November brings warmer seas and more daylight, which sounds pretty perfect.
If you care more about dry air and cooler nights, then September feels like the best bet.