Climate averages 1991–2020
Vacoas weather
in September.
A warm, fairly dry month: the 9th warmest and the joint 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Vacoas: daytime highs average 23.3°C and nights cool to about 17.8°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 26 mm of rain on roughly 7 days, which makes September a fairly dry month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average September day.
The nearest other city in this atlas is Port Louis (15 km away). In September its highs average 25.4°C, 2.1°C warmer than Vacoas, with 26 mm of rain.
Among the 2 cities listed in Mauritius, Vacoas ranks 2nd of 2 for the warmest September highs and joint 1st of 2 for the driest September (rainfall, lowest first). The mean September high of those 2 cities is 24.4°C; Vacoas is 1.1°C cooler than that mean.
From September to October, average highs rise by 1.5°C to 24.8°C, and monthly rainfall stays at 26 mm.
The annual picture
September 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
Vacoas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.7°C23.1°C | 23.1°C | 188 | 22.7 | 13.213 h |
| February | 27.6°C23.3°C | 23.3°C | 170 | 22.1 | 12.813 h |
| March | 27.3°C22.9°C | 22.9°C | 139 | 21.6 | 12.212 h |
| April | 26.5°C22.0°C | 22.0°C | 67 | 16.2 | 11.612 h |
| May | 24.8°C20.3°C | 20.3°C | 43 | 11.1 | 11.211 h |
| June | 23.1°C18.6°C | 18.6°C | 21 | 7.1 | 10.911 h |
| July | 22.2°C17.7°C | 17.7°C | 21 | 8.1 | 11.011 h |
| August | 22.3°C17.5°C | 17.5°C | 24 | 7.1 | 11.411 h |
| September, selected | 23.3°C17.8°C | 17.8°C | 26 | 7.2 | 12.012 h |
| October | 24.8°C18.9°C | 18.9°C | 26 | 7.4 | 12.513 h |
| November | 26.3°C20.4°C | 20.4°C | 43 | 10.8 | 13.113 h |
| December | 27.5°C22.1°C | 22.1°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
September in nearby cities
- Port Louis in SeptemberMauritius · 15 kmHigh 25.4°C · Low 20.4°C · 26 mm rain
- Saint-Denis in SeptemberReunion · 221 kmHigh 24.3°C · Low 19.8°C · 36 mm rain
- Saint-Pierre in SeptemberReunion · 238 kmHigh 25.5°C · Low 19.6°C · 45 mm rain
- Saint-Paul in SeptemberReunion · 243 kmHigh 24.3°C · Low 19.3°C · 26 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 Vacoas) is explained once on the Vacoas year overview and on the Sources, method and limits page.
Port Louis lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.