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Port Louis weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Port Louis?
For a warm holiday, the best week has been 14–20 October (Weather Index 95). Favourable start dates for a 7-day trip run from 8 October to 22 October. December to March are warmest (28°C), August and October are driest and September to February have the most sun.
- Warmest
- December to March 28°C
- Coolest
- July 23°C
- Driest
- August and October 35% rain-day chance
- Wettest
- February 84% rain-day chance
- Sunniest
- September to February 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Port Louis
Port Louis historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 28.4 | 25.1 | 81.0 | 25.1 | 194.3 | 11.6 |
| February | 28.5 | 25.3 | 84.3 | 23.6 | 189.3 | 11.5 |
| March | 28.4 | 25.3 | 81.9 | 25.4 | 169.6 | 11.1 |
| April | 27.4 | 24.6 | 76.0 | 22.8 | 126.4 | 10.7 |
| May | 25.8 | 22.9 | 52.6 | 16.3 | 70.6 | 10.3 |
| June | 24.3 | 21.5 | 42.7 | 12.8 | 51.7 | 9.9 |
| July | 23.5 | 20.6 | 46.1 | 14.3 | 49.1 | 10.2 |
| August | 23.5 | 20.4 | 34.8 | 10.8 | 38.3 | 10.8 |
| September | 23.9 | 20.6 | 39.7 | 11.9 | 30.3 | 11.6 |
| October | 25.4 | 21.7 | 34.8 | 10.8 | 33.7 | 11.9 |
| November | 26.6 | 22.9 | 48.0 | 14.4 | 66.1 | 12.2 |
| December | 27.8 | 24.2 | 65.8 | 20.4 | 117.4 | 12.5 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.