Port Louis in Summer
In summer (December, January and February), Port Louis sees average daytime highs around 28°C and overnight lows near 24°C, with 454 mm of rain over about 61 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 21% of the time across summer, and the air most often feels oppressive.
Summer is Port Louis's weakest season of the year to visit on our travel score. Port Louis has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Port Louis's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 24°C
- Rainfall
- 454 mm
- 61 wet days
- Avg wind
- 17 km/h
- Travel score
- 4.7
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Port Louis in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Port Louis reaches about 28°C and drops to 24°C overnight. The warmest of the three months is January, the coolest December.
Port Louis weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 24° | 188 | 22.7 | 13.1 | 4.5 |
| Feb | 28° / 25° | 169 | 21.8 | 12.7 | 4.2 |
| Mar | 28° / 24° | 139 | 21.6 | 12.1 | 4.8 |
| Apr | 27° / 24° | 67 | 16.2 | 11.6 | 5.7 |
| May | 25° / 22° | 43 | 11.1 | 11.1 | 6.9 |
| Jun | 24° / 21° | 21 | 7.1 | 10.8 | 7.7 |
| Jul | 23° / 20° | 21 | 8.1 | 10.9 | 7.5 |
| Aug | 23° / 19° | 24 | 7.1 | 11.3 | 7.5 |
| Sep | 24° / 20° | 26 | 7.2 | 11.9 | 7.6 |
| Oct | 25° / 21° | 26 | 7.4 | 12.5 | 7.5 |
| Nov | 26° / 22° | 43 | 10.8 | 13 | 6.6 |
| Dec | 27° / 24° | 97 | 16.9 | 13.2 | 5.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 21% of the time across summer.
Chance of precipitation in Summer
Port Louis gets around 454 mm of rain over 61 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 17 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 06 min in early December to 12 h 30 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.8 kWh/m².
Hazard calendar for Port Louis
In summer, Port Louis overlaps its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.
Port Louis sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Port Louis's monsoon runs December–March, when most of the year's rain falls.
Is summer a good time to visit Port Louis?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Port Louis for sightseeing.
What to pack for Port Louis in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Port Louis sees daytime highs around 28°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 61 days see rain.
Sea temperature near Port Louis in Summer
The nearest coast averages about 27°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 km away) is warmest in February at about 28°C and coldest in August near 24°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 28 | 28 | 27 | 25 | 24 | 24 | 24 | 24 | 25 | 27 |
| Comfort | Warm | Tropical | Warm | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 28 | Warm |
| Apr | 28 | Warm |
| May | 27 | Warm |
| Jun | 25 | Warm |
| Jul | 24 | Warm |
| Aug | 24 | Refreshing |
| Sep | 24 | Refreshing |
| Oct | 24 | Warm |
| Nov | 25 | Warm |
| Dec | 27 | Warm |
UV index in Port Louis in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Port Louis peaks around January 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 7 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 16 | 15 | 13 | 10 | 8 | 7 | 7 | 9 | 11 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | Very high | High | High | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 7 | High |
| Aug | 9 | Very high |
| Sep | 11 | Extreme |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Port Louis?
Port Louis sits at 20.2°S, 57.5°E, 3 m above sea level, in Mauritius. The nearest listed city is Le Hochet, 4.0 km away.
Topography around Port Louis
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Port Louis.
Within 3 km, the terrain around Port Louis has significant variations in elevation — a maximum elevation change of 427 m around an average of 51 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 758 m; within 80 km, large variations in elevation — a maximum elevation change of 786 m.
The land around Port Louis is covered by artificial surfaces (37%) and trees (32%) within 3 km, water (35%) and trees (28%) within 16 km, and water (85%) within 80 km.
Mauritius travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E / G
- 230 V · 50 Hz
- Prices
- ≈ 39% of US
- price level, 2025
- GDP per capita
- $12,991
- 2025
- Happiness
- 5.9 / 10
- World Happiness, 2025
- Homicide rate
- 2.3
- per 100k, 2022
- Road deaths
- 12.2
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Port Louis (-20.1619°, 57.4989°, elevation 3 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.