Port Louis, Mauritius Climate & Monthly Averages
Port Louis has a tropical wet-and-dry climate. January is the hottest month, averaging 85° by day; July is the coldest at 77°.
Rain, not cold, divides the year in Port Louis
Temperature barely moves in Port Louis - 5°C between the average January and the average July. Rainfall does the work instead: 9.2 inches (233 mm) in January against 22 mm (0.9 in) in September.
The wet-and-dry rhythm at a glance
January is the warm end of the year, averaging 85°F (30°C) by day and 76°F (25°C) overnight. July sits at the other end of the year: 77°F (25°C) by day, 68°F (20°C) at night. Four of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is June through September.
Between the average January and the average July lie 5°C, a narrower spread than about 86% of the cities we track. December is the brightest month at 12.3 hours of sun a day, against an annual average of 11.0 - sunnier than 95% of the 3496 cities in our dataset. The wettest month is January (9.2 inches (233 mm) across 24 days) and the driest September.
Days and nights are about 5°C apart on average - narrower than all but 5% of the 3496 cities in our dataset. The gridded 2015-2024 daily record for this location tops out at 92°F (33°C) and bottoms at 59°F (15°C) - decade extremes, not all-time station records.
More climate facts for Port Louis
- Hottest month: January - highs near 85°F (30°C)
- Coldest month: July - highs near 77°F (25°C)
- Decade extremes (2015-2024): 92°F (33°C) high · 59°F (15°C) low
- Wettest month: January (24 rainy days) · Sunniest: December (12.3 h sun/day)
- Climate type: tropical wet-and-dry
- Annual swing: 5°C between the average warmest and coolest month · day to night: 5°C
- Average humidity: 76%
Choosing the right part of the year in Port Louis
Choose dates by rain, not just temperature
The best time to visit Port Louis is generally May to October, when humidity and rainfall are at their lowest, which is what actually varies here. Daytime temperatures in that window sit near 79°F (26°C), with rain on about 8 days a month. For the same question asked the other way round, see where else is warm in May.
What the humidity changes
Pack for Port Louis with light clothing for the warm months, proper waterproofs rather than an umbrella - wet days are the norm here and moisture-wicking fabrics for the humidity. Even in January, lows of 76°F (25°C) make an extra layer worth the space.
Warm all year: the monthly rain pattern
Each card shows the average high and low. The bar places that month between Port Louis's coldest night and warmest afternoon.
January
- Rain
- 24 days
- Sunshine
- 11.0 h
- Daylight
- 13.2 h
February
- Rain
- 21 days
- Sunshine
- 11.4 h
- Daylight
- 12.8 h
March
- Rain
- 21 days
- Sunshine
- 10.7 h
- Daylight
- 12.3 h
April
- Rain
- 17 days
- Sunshine
- 10.6 h
- Daylight
- 11.7 h
May
- Rain
- 10 days
- Sunshine
- 10.2 h
- Daylight
- 11.2 h
June
- Rain
- 7 days
- Sunshine
- 9.9 h
- Daylight
- 10.9 h
July
- Rain
- 8 days
- Sunshine
- 10.2 h
- Daylight
- 11.0 h
August
- Rain
- 8 days
- Sunshine
- 10.8 h
- Daylight
- 11.4 h
September
- Rain
- 7 days
- Sunshine
- 11.5 h
- Daylight
- 12.0 h
October
- Rain
- 10 days
- Sunshine
- 11.6 h
- Daylight
- 12.6 h
November
- Rain
- 13 days
- Sunshine
- 11.9 h
- Daylight
- 13.1 h
December
- Rain
- 18 days
- Sunshine
- 12.3 h
- Daylight
- 13.3 h
Looking for warmer alternatives? Browse warm places by month, or compare Port Louis's coolest part of the year: July, August, June.
Monthly temperature and rain table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 85° | 76° | 24 | 9.2 in | 11.0 h/day | 13.2 h | 76% | 80% |
| February | 85° | 76° | 21 | 6.1 in | 11.4 h/day | 12.8 h | 75% | 81% |
| March | 85° | 76° | 21 | 5.5 in | 10.7 h/day | 12.3 h | 67% | 81% |
| April | 84° | 75° | 17 | 3.2 in | 10.6 h/day | 11.7 h | 58% | 80% |
| May | 81° | 72° | 10 | 1.9 in | 10.2 h/day | 11.2 h | 34% | 76% |
| June | 78° | 69° | 7 | 1.0 in | 9.9 h/day | 10.9 h | 23% | 74% |
| July | 77° | 68° | 8 | 1.1 in | 10.2 h/day | 11.0 h | 27% | 73% |
| August | 78° | 68° | 8 | 1.2 in | 10.8 h/day | 11.4 h | 26% | 72% |
| September | 79° | 68° | 7 | 0.9 in | 11.5 h/day | 12.0 h | 24% | 70% |
| October | 82° | 70° | 10 | 1.9 in | 11.6 h/day | 12.6 h | 33% | 72% |
| November | 84° | 72° | 13 | 2.0 in | 11.9 h/day | 13.1 h | 43% | 73% |
| December | 85° | 75° | 18 | 4.1 in | 12.3 h/day | 13.3 h | 59% | 75% |
How Port Louis compares for rain and warmth
- Port Louis sits close to the middle of our dataset on most measures: 76°F (25°C) as an annual average, 38.1 inches (967 mm) of precipitation and 11.0 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.
How the calendar changes in warm-weather Port Louis
September through November
September through November in Port Louis sits firmly in the heat, with daytime highs averaging 82°F (28°C) and nights around 70°F (21°C); rain falls on around 30 of the 90 days. Daylight is generous - around 11.7 hours of sun a day.
December through February
December through February in Port Louis sits firmly in the heat, with daytime highs averaging 85°F (30°C) and nights around 76°F (24°C); rain falls on around 63 of the 90 days. Daylight is generous - around 11.6 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
March through May
Through March through May, Port Louis is hot: 83°F (28°C) by day, 75°F (24°C) after dark, and rain falls on around 49 of the 90 days. Daylight is generous - around 10.5 hours of sun a day.
June through August
June through August in Port Louis brings comfortable warmth, with daytime highs averaging 78°F (25°C) and nights around 68°F (20°C); expect showers on roughly 23 days across the season. Daylight is generous - around 10.3 hours of sun a day.
Questions about heat and rain in Port Louis
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How much does the weather change through the year in Port Louis?
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Port Louis temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.