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Contents
- The climate of Port Louis
- The best time to visit Port Louis
- The worst time to visit Port Louis
- Spring weather in Port Louis
- Summer weather in Port Louis
- Autumn weather in Port Louis
- Winter weather in Port Louis
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The city of Port Louis in Mauritius
The climate of Port Louis
Situated on the Indian Ocean, Port Louis, the capital city of Mauritius, experiences the Tropical monsoon climate, classified as Am according to Köppen climate classification. This classification corresponds to a weather pattern characterized by hot, humid conditions with sizeable rainfall throughout the year.
The average high temperature in Port Louis ranges from 23.5°C (74.3°F) to 28.6°C (83.5°F), while the town's low-average temperature fluctuates from 21.3°C (70.3°F) to 26°C (78.8°F). Noticeably, Port Louis experiences very little thermal fluctuation that ensures consistent weather conditions, keeping the city warm throughout the year.
Rainfall in Port Louis varies greatly, with the highest observed in February at 97mm (3.82") which gradually decreases reaching a minimum of 8mm (0.31") in September, the driest month, representing the monsoon influence coupled with localized weather conditions. Furthermore, relative humidity stays around 73% to 78%, ensuring a constant sweaty weather pattern.
Port Louis sees the highest wind speed in July, reaching up to 23.6km/h (14.7mph) with gusts that can go up to 32km/h (19.9mph). The lowest wind speeds hover around a moderate 17.1km/h (10.6mph) in November. The city maintains a constant air pressure throughout the year, with a moderate minimum pressure of 1011.1mb in February, rising to a slight peak value of 1021mb in August.
The average high temperature in Port Louis ranges from 23.5°C (74.3°F) to 28.6°C (83.5°F), while the town's low-average temperature fluctuates from 21.3°C (70.3°F) to 26°C (78.8°F). Noticeably, Port Louis experiences very little thermal fluctuation that ensures consistent weather conditions, keeping the city warm throughout the year.
Rainfall in Port Louis varies greatly, with the highest observed in February at 97mm (3.82") which gradually decreases reaching a minimum of 8mm (0.31") in September, the driest month, representing the monsoon influence coupled with localized weather conditions. Furthermore, relative humidity stays around 73% to 78%, ensuring a constant sweaty weather pattern.
Port Louis sees the highest wind speed in July, reaching up to 23.6km/h (14.7mph) with gusts that can go up to 32km/h (19.9mph). The lowest wind speeds hover around a moderate 17.1km/h (10.6mph) in November. The city maintains a constant air pressure throughout the year, with a moderate minimum pressure of 1011.1mb in February, rising to a slight peak value of 1021mb in August.
The best time to visit Port Louis
Contrary to the prevalent precipitation and humidity, Port Louis boasts a freezing period between May and November, which many find appealing. In this period, rainfall hits its yearly low, clocking in at a mild 14mm (0.55") in October. Consequently, this period also features the longest sunshine duration, with the longest day in the year occurring in December offering 13.3 hours of light. The sea temperature also remains inviting, floating around 23.7°C (74.7°F) to 25.1°C (77.2°F), perfect for beach activities and marine exploration.
The worst time to visit Port Louis
Due to the relentless precipitation and humidity, the period from January to March can prove challenging for visitors. February records the maximum rainfall of 97mm (3.82"), accompanied by high temperatures peaking at 28.6°C (83.5°F). The discomfort factor is furthered by high wind speed, reaching its yearly maximum of 18.8km/h (11.7mph) in March.
Spring weather in Port Louis
Spring treads a middle ground in Port Louis from September to November. The city experiences moderate rainfall, with the lowest precipitation observed in September at 8mm (0.31"), gradually increasing to 25mm (0.98") in November. The average high temperatures remain consistent, ranging from 23.7°C (74.7°F) to 27.6°C (81.7°F), while the relative humidity remains steady at 73% to 75%.
Summer weather in Port Louis
The start of the year ushers in summer, which extends from December to February. The tropical monsoon climate comes to the forefront during this time, with higher temperatures reaching up to 28.6°C (83.5°F). Rainfall also sees a sharp rise, touching its peak at 97mm (3.82") in February. However, the sea temperature remains inviting throughout this period at around 27.4°C (81.3°F) to 28.5°C (83.3°F).
Autumn weather in Port Louis
March, April, and May form the autumn period in Port Louis, serving as a transition period from high rainfall to a drier season. The rainfall ranges from 79mm (3.11") in March to a significantly lower 21mm (0.83") in May. Days become shorter, and temperatures also lower with highs from 27.5°C (81.5°F) to 25.8°C (78.4°F) while sea temperatures remain fairly warm from 27.7°C (81.9°F) to 26.8°C (80.2°F).
Winter weather in Port Louis
Despite the tropical monsoon climate, Port Louis undergoes a distinctly cooler period from June to August, often regarded as winter. This season witnesses lower average temperatures from 24.5°C (76.1°F) to 23.5°C (74.3°F) and less rainfall, with the minimum recorded at 16mm (0.63") in July. Notably, July also records the highest wind speeds at 23.2km/h (14.4mph), adding to the cooler ambiance.
Weather in January
January introduces the year in Port Louis, Mauritius with stable and warm conditions. Average sea temperatures peak at 27.4°C (81.3°F), making beach trips particularly appealing in this month. Compared to the upcoming February, the days are longer in January and the solar exposure marginally higher. Weather in January »
Weather in February
As Port Louis trails into February, the temperatures remain consistently high, yet slightly cooler than those in January. The city experiences a dip in daylight hours in February, rendering the days slightly shorter. Despite this, beachgoers can still relish warm ocean temperatures. Weather in February »
Weather in March
March sees a continuance of warm weather conditions in Port Louis, Mauritius. Amidst decreasing average high temperatures from 28.6°C (83.5°F) to 28.3°C (82.9°F), March still offers plenty of beach time with persistently warm sea temperatures. Weather in March »
Weather in April
In April, Port Louis transitions into a marginally cooler gateway, veering away from the high temperatures experienced in March. With warmer sea temperatures in April than in the upcoming May, April remains a prime period for marine tourism. Weather in April »
Weather in May
May marks the onset of milder weather with a noticeable drop in both land and sea temperatures in Port Louis. Daylight hours start to shrink in preparation for winter, with fewer sunshine hours than in April. This diminishes the intensity of the usually harsh sun rays, providing more comfortable conditions for sightseeing. Weather in May »
Weather in June
June graces Port Louis, Mauritius with cooler temperatures and even lesser daylight than May. Notwithstanding the seasonal transition, sea temperatures persistently stand at a comfortable 25.3°C (77.5°F), inviting for water sports. Weather in June »
Weather in July
July in Port Louis showcases balmy climatic conditions with temperatures averaging between 23.6°C (74.5°F) and 21.4°C (70.5°F). This makes it one of the coolest months in the city, providing a refreshing break from the habitual tropical heat. Weather in July »
Weather in August
August brings similar patterns to July in Port Louis, though marginally warmer. The conditions, both on land and sea, create a soothing and tranquil environment. A slight increase in rainfall can be observed, yet these rains are generally short-lived and scattered. Weather in August »
Weather in September
September heralds a metamorphosis with gradual surge in temperatures, setting the pace for the upcoming summer in Port Louis. Modest daylight hours set against longer sunshine durations create ideal sightseeing conditions. September registers the least rainfall of the year, with an average of just 8mm (0.31"). Weather in September »
Weather in October
October marks the definitive transition into summer in Port Louis, Mauritius with escalating temperatures and extended daylight. Sea temperatures start becoming warmer, making water-based activities increasingly appealing. Compared to September, there's an increase in rainfall but it remains substantially scattered and short-lived. Weather in October »
Weather in November
November in Port Louis is markedly warmer with both day and night temperatures witnessing a noticeable increase. Well into the summer season now, November experiences a sharp increase in temperatures compared to the preceding October. Weather in November »
Weather in December
Concluding the year in Port Louis, December brings an upsurge in temperatures, further intensifying the summer vibe. With 13.3 hours of daylight, December offers the longest daylight period of the year. The ocean remains warm and inviting with an average temperature of 26.8°C (80.2°F). Weather in December »
Updated: Feb 7, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the most humid month in Port Louis?
January through March, with an average relative humidity of 78%, are most humid months.
What is the wettest month in Port Louis?
The month with the most rainfall is January, when the rain falls for 18.9 days and typically aggregates up to 97mm (3.82") of precipitation.
How much does it rain in Port Louis?
Throughout the year, in Port Louis, there are 177.1 rainfall days, and 480mm (18.9") of precipitation is accumulated.
When is the highest UV index in Port Louis?
The months with the highest UV index in Port Louis are January through April and December, with an average maximum UV index of 7.
What time of the year is the hottest in Port Louis?
Temperature records mark February as the warmest month, with highs averaging 28.6°C (83.5°F) and lows at 26°C (78.8°F).
What month is the sea warmest in Port Louis?
With an average sea temperature of 28.5°C (83.3°F), March is the month with the warmest seawater in Port Louis, Mauritius.
What are the months with the lowest UV index in Port Louis?
May through November, with an average maximum UV index of 6, are months with the lowest UV index.
What is the month with the shortest days in Port Louis?
With an average of 10h and 54min of daylight, June has the shortest days of the year in Port Louis, Mauritius.
What is the month with the least sunshine in Port Louis?
The month with the least sunshine in Port Louis is July, with an average of 6.3h of sunshine.
What month is the coldest in Port Louis?
In Port Louis, August is the coldest month, with temperatures averaging a high of 23.5°C (74.3°F) and a low of 21.3°C (70.3°F).
What is the least humid month in Port Louis?
The months with the lowest humidity are August and September, with an average relative humidity of 73%.
When is the sea coldest in Port Louis?
August and September, with an average sea temperature of 23.7°C (74.7°F), are months with the coldest seawater in Port Louis, Mauritius.
What is the driest month in Port Louis?
The month with the least rainfall in Port Louis is September, when the rain falls for 10 days and typically collects 8mm (0.31") of precipitation.
What month has the most sunshine in Port Louis?
October has the most sunshine of the year in Port Louis, Mauritius, with an average of 10.4h of sunshine.
When are the longest days in Port Louis?
The month with the longest days is December, with an average of 13h and 18min of daylight.
Is there Daylight Saving Time (DST) in Port Louis?
Port Louis, Mauritius, does not utilize Daylight Saving Time (DST). +04 timezone is used over the entire year.
Average temperature
Port Louis, Mauritius
The warmest month (with the highest average high temperature) is February (83.5°F).
The month with the lowest average high temperature is August (74.3°F).
The month with the highest average low temperature is February (78.8°F).
The coldest month (with the lowest average low temperature) is August (70.3°F).
Average pressure
Port Louis, Mauritius
- Average pressure in January:
29.87"Hg - Average pressure in February:
29.86"Hg - Average pressure in March:
29.89"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.1"Hg
- Average pressure in July:
30.13"Hg - Average pressure in August:
30.15"Hg - Average pressure in September:
30.14"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
29.99"Hg - Average pressure in December:
29.92"Hg
The month with the highest atmospheric pressure is August (30.15"Hg).
The month with the lowest atmospheric pressure is February (29.86"Hg).
Average wind speed
Port Louis, Mauritius
- Average wind speed in January:
11.3mph - Average wind speed in February:
10.8mph - Average wind speed in March:
11.7mph - Average wind speed in April:
12.4mph - Average wind speed in May:
12.2mph - Average wind speed in June:
14.5mph
- Average wind speed in July:
14.4mph - Average wind speed in August:
14.7mph - Average wind speed in September:
13.7mph - Average wind speed in October:
12.2mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.9mph
The windiest month (with the highest average wind speed) is August (14.7mph).
The calmest month (with the lowest average wind speed) is November (10.6mph).
Average humidity
Port Louis, Mauritius
The months with the highest relative humidity are January, February and March (78%).
The months with the lowest relative humidity are August and September (73%).
Average rainfall
Port Louis, Mauritius
- Average rainfall in January:
3.82" - Average rainfall in February:
3.62" - Average rainfall in March:
3.11" - Average rainfall in April:
1.61" - Average rainfall in May:
0.83" - Average rainfall in June:
0.79"
- Average rainfall in July:
0.63" - Average rainfall in August:
0.67" - Average rainfall in September:
0.31" - Average rainfall in October:
0.55" - Average rainfall in November:
0.98" - Average rainfall in December:
1.97"
The wettest month (with the highest rainfall) is January (3.82").
The driest month (with the least rainfall) is September (0.31").
Average rainfall days
Port Louis, Mauritius
- Average rainfall days in January:
18.9 days - Average rainfall days in February:
19.7 days - Average rainfall days in March:
20.8 days - Average rainfall days in April:
17.5 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
10 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is March (20.8 days).
The months with the least rainy days are October and November (9.5 days).
Average sea temperature
Port Louis, Mauritius
The best month for swimming (with the highest average sea temperature) is March (83.2°F).
The coldest month (with the lowest average sea temperature) is September (74.5°F).
Average daylight / Average sunshine
Port Louis, Mauritius
- Average daylight in January:
13h and 1min - Average daylight in February:
12h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
11h and 4min - Average daylight in May:
11h and 1min - Average daylight in June:
10h and 5min
- Average daylight in July:
11h and 0min - Average daylight in August:
11h and 2min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 4min - Average daylight in November:
13h and 1min - Average daylight in December:
13h and 2min
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).
- Average sunshine in January:
9h and 4min - Average sunshine in February:
8h and 4min - Average sunshine in March:
8h and 0min - Average sunshine in April:
7h and 1min - Average sunshine in May:
6h and 4min - Average sunshine in June:
6h and 2min
- Average sunshine in July:
6h and 2min - Average sunshine in August:
6h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
10h and 2min - Average sunshine in November:
10h and 1min - Average sunshine in December:
10h and 2min
The month with the most sunshine is October (Average sunshine: 10h and 24min).
The month with the least sunshine is July (Average sunshine: 6h and 18min).
Average sunshine days
Port Louis, Mauritius
- Average sunshine days in January:
8.9 days - Average sunshine days in February:
5.2 days - Average sunshine days in March:
7.3 days - Average sunshine days in April:
8.3 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
7.1 days - Average sunshine days in August:
10.1 days - Average sunshine days in September:
13.1 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
15.9 days - Average sunshine days in December:
13.1 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is February (5.2 days).
Average UV index
Port Louis, Mauritius
The months with the highest UV index are January, February, March, April and December (UV index 7).
The months with the lowest UV index are May, June, July, August, September, October and November (UV index 6).
Average cloud cover
Port Louis, Mauritius
The months with the most cloud cover are January and March (Cloud cover 44).
The month with the least cloud cover is May (Cloud cover 35).
Average visibility
Port Louis, Mauritius
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Port Louis, Mauritius
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