Climate averages 1991–2020
Port Louis weather
in December.
A hot, wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Port Louis: daytime highs average 29.3°C and nights cool to about 24.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 97 mm of rain on roughly 17 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 19 min on an average December day.
The nearest other city in this atlas is Vacoas (15 km away). In December its highs average 27.5°C, 1.8°C cooler than Port Louis, with 97 mm of rain.
Among the 2 cities listed in Mauritius, Port Louis ranks 1st of 2 for the warmest December highs and joint 1st of 2 for the driest December (rainfall, lowest first). The mean December high of those 2 cities is 28.4°C; Port Louis is 0.9°C warmer than that mean.
From December to January, average highs rise by 0.3°C to 29.5°C, and monthly rainfall rises from 97 mm to 188 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Port Louis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C25.4°C | 25.4°C | 188 | 22.7 | 13.213 h |
| February | 29.5°C25.6°C | 25.6°C | 170 | 22.1 | 12.813 h |
| March | 29.2°C25.3°C | 25.3°C | 139 | 21.6 | 12.212 h |
| April | 28.5°C24.4°C | 24.4°C | 67 | 16.2 | 11.612 h |
| May | 26.9°C22.8°C | 22.8°C | 43 | 11.1 | 11.211 h |
| June | 25.3°C21.2°C | 21.2°C | 21 | 7.1 | 10.911 h |
| July | 24.5°C20.3°C | 20.3°C | 21 | 8.1 | 11.011 h |
| August | 24.6°C20.1°C | 20.1°C | 24 | 7.1 | 11.411 h |
| September | 25.4°C20.4°C | 20.4°C | 26 | 7.2 | 12.012 h |
| October | 26.8°C21.5°C | 21.5°C | 26 | 7.4 | 12.513 h |
| November | 28.1°C22.9°C | 22.9°C | 43 | 10.8 | 13.113 h |
| December, selected | 29.3°C24.5°C | 24.5°C | 97 | 16.9 | 13.313 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Vacoas in DecemberMauritius · 15 kmHigh 27.5°C · Low 22.1°C · 97 mm rain
- Saint-Denis in DecemberReunion · 228 kmHigh 27.5°C · Low 24.0°C · 138 mm rain
- Saint-Pierre in DecemberReunion · 248 kmHigh 29.2°C · Low 24.3°C · 174 mm rain
- Saint-Paul in DecemberReunion · 250 kmHigh 27.5°C · Low 23.6°C · 93 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Port Louis) is explained once on the Port Louis year overview and on the Sources, method and limits page.
Vacoas lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.