Weather in Mauritius in September

September climate overview

Daytime highs across Mauritius in September run from 24.2°C (Belle Mare) to 25.7°C (Flic en Flac). In Flic en Flac about 75% of September days reach 25°C. Nights average 20.0°C; the coldest 10% of nights in Belle Mare fall to 19°C or below.

Rainfall in September

Expect around 7 rainy days (1 mm or more) in September, with Flic en Flac the driest (3 days) and Belle Mare the wettest (12 days). The wettest September at Flic en Flac between 1991 and 2020 was 2008 with 209 mm; the driest was 2000 with 1 mm.

Sea temperature

The sea averages 23.6°C around Mauritius in September - warmest at Flic en Flac (23.7°C). That is comfortable for swimming.

Sunshine and daylight

Around 7.3 hours of sunshine a day on average, out of 11.9 hours of daylight (sunshine estimated from cloud cover).

September against the rest of the year in Mauritius

September is the 9th warmest month of the twelve in Mauritius. It is 0.8°C warmer than August and 1.3°C warmer in October. The hottest month here is January (29°C) and the coolest July (24°C).

Which part of Mauritius in September?

• Most sunshine: Flic en Flac, 7.9 h a day.
• Driest: Flic en Flac, about 3 rainy days.
• Warmest sea: Flic en Flac, 24°C.
• Hottest: Flic en Flac, 26°C by day.
• Coolest (better for walking and cities): Belle Mare, 24°C.

What to pack for Mauritius in September

Based on the averages: summer clothes for the day; a light waterproof for the odd shower; swimwear - the sea is 24°C.

Similar weather elsewhere in September

Within 1.5°C of Mauritius's September daytime average: Algarve (26°C, sea 21°C), Bodrum (26°C, sea 24°C), Madrid (26°C), Bermuda (26°C, sea 27°C), La Gomera (26°C, sea 24°C). See the full ranking for September.

Flic en Flac is the warmer, drier choice

For a holiday built around swimming and spending time outside, Flic en Flac is the stronger September option. Its daytime average is 26°C, compared with 24°C in Belle Mare, and the rainfall contrast matters more than that modest temperature difference. Flic en Flac averages 3 rainy days, while Belle Mare averages 12, so the latter calls for more flexibility with outdoor plans. Belle Mare still suits travellers who prefer slightly cooler days and do not mind working around rain. Both have a sea temperature of 24°C and nights averaging 20°C, so choosing Belle Mare does not mean colder water or cooler evenings.

Expect warm days and milder evenings

Across Mauritius, September averages 25°C by day and 20°C at night. Pack light clothes for daytime, with a light layer if you tend to feel cool when sitting outside in the evening. Average sunshine of 7.3 hours gives September a useful balance for beach time and other outdoor plans, though it does not promise clear skies throughout your stay. Keep sun protection handy and take a break from direct sun around midday if needed. With 7 rainy days on average, it makes sense to bring a light waterproof and leave some room to rearrange plans rather than relying on uninterrupted dry weather.