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Grand Baie weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Grand Baie?
For a warm holiday, the best week has been 16–22 October (Weather Index 97). Favourable start dates for a 7-day trip run from 27 September to 30 November. January, February and March are warmest (28°C), September is driest and September to January have the most sun.
- Warmest
- January, February and March 28°C
- Coolest
- July and August 23°C
- Driest
- September 8% rain-day chance
- Wettest
- February 65% rain-day chance
- Sunniest
- September to January 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 Grand Baie
Grand Baie 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 | 27.6 | 25.6 | 55.8 | 17.3 | 158.5 | 11.6 |
| February | 27.8 | 25.8 | 64.6 | 18.1 | 135.5 | 11.5 |
| March | 27.8 | 25.8 | 55.2 | 17.1 | 118.9 | 11.0 |
| April | 27.1 | 25.1 | 44.3 | 13.3 | 84.4 | 10.7 |
| May | 25.7 | 23.7 | 22.9 | 7.1 | 34.0 | 10.4 |
| June | 24.2 | 22.3 | 16.3 | 4.9 | 24.8 | 10.0 |
| July | 23.4 | 21.4 | 11.3 | 3.5 | 16.7 | 10.3 |
| August | 23.3 | 21.2 | 11.6 | 3.6 | 13.7 | 10.9 |
| September | 23.6 | 21.4 | 8.0 | 2.4 | 8.3 | 11.6 |
| October | 24.6 | 22.4 | 14.8 | 4.6 | 15.6 | 11.9 |
| November | 25.8 | 23.6 | 27.3 | 8.2 | 28.2 | 12.2 |
| December | 27.0 | 24.8 | 42.3 | 13.1 | 63.6 | 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.