Mauritius Mauritius Weather in September — Climate Guide
September in Mauritius is high
September is high for Mauritius.
September is widely considered one of Mauritius' top 2-3 travel months — peak dry season weather (50mm rain, 7 wet days, lowest of year), comfortable 25°C / 18°C temperatures, but with the European-holiday pricing pressure released as Northern-Hemisphere schools resume. The value sweet spot of the year. Whale shark sightings begin (Oct-Feb canonical season — occasional September luck).
Travel score
Driest month of year + post-Euro-holiday value + whale shark season starts
September Weather at a Glance
September averages 25°C / 77°F highs and 18°C / 64°F lows with 50mm precipitation over 7 wet days — the year's driest month. Humidity 75%. Sunshine 8h (climbing). Sea temperature 23°C. SE trade winds moderate. Day length grows to 12h around the equinox. Pattern: clear sunny dry days + comfortable breezy evenings.
September Travel Advice
September is widely considered the value sweet spot of the year. Same dry-winter weather as July-August but at 25-40% lower prices because European school holidays have ended. Best month for cost-conscious travelers who want peak weather. Whale shark sighting tours from Black River begin this month (Oct-Feb is the canonical season). Pack a cardigan for cool evenings.
September Pricing Trends
Best shoulder pricing: 5-star resorts $600-1,300/night, mid-range 4-star $250-550. Flights from major hubs $800-1,300. The best dry-season value all year.
Mauritius September Weather Stats
Avg High
25°C
Avg Low
18°C
Rainy Days
7
50mm total
Sunshine
8h
Daily avg
Humidity
75%
moderate
UV Index
10
Very high
Wind
17 km/h
Gusts 50
Sea Temp
23°C
swimming chilly
Crowds
Moderate
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
10 μg/m³
PM10
17 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
26°C
Nighttime
19°C
Humidity and wind affect how the actual temperature feels.
Wind
17 km/h
Max gust 50 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Driest month of year (50mm rain, 7 wet days)
- Most reliable dry weather
- Lower humidity (75%)
- Peak value (school in session)
- Whale shark + manta sightings begin (Oct-Feb)
- Outdoor sightseeing at peak
Cons
- Still cool nights (18°C)
- Sea temperature 23°C cooler swimming
- Day length 11.5h (shorter than wet-season)
- Some resort renovations during this shoulder period
September Events & Festivals
- European summer holidays end (drop in tourism)
- School holidays end Northern Hemisphere
- Tamarin surf season tail
- Whale-shark sighting season begins (Oct-Feb canonical)
Mauritius in September — Full Picture
September is widely considered one of Mauritius' top 2-3 travel months — peak dry season weather (50mm rain, 7 wet days, lowest of year), comfortable 25°C / 18°C temperatures, but with the European-holiday pricing pressure released as Northern-Hemisphere schools resume. The value sweet spot of the year. Whale shark sightings begin (Oct-Feb canonical season — occasional September luck).
What to Wear & What to Pack
Dry-spring start — cotton + linen daytime, light cardigan for evenings (still cool at 18°C). Swimwear, SPF 30+. UV climbing back as days lengthen. Long-sleeve cover for trade-wind evenings.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
28.7°C
21.7°C
10.7/mo
Summer (Jun·Jul·Aug)
24.7°C
18.3°C
8.3/mo
Autumn (Sep·Oct·Nov)
Current26.3°C
19.3°C
7.3/mo
Winter (Dec·Jan·Feb)
29.7°C
22.7°C
13/mo
Mauritius Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 30° | 23° | 14d·220mm | 7h | 82% | 11 | Busy | Peak | |
| 30° | 23° | 13d·230mm | 7h | 82% | 11 | Moderate | Shoulder | |
| 30° | 23° | 12d·200mm | 7h | 81% | 11 | Moderate | Shoulder | |
| 29° | 22° | 11d·120mm | 7h | 78% | 10 | Moderate | Shoulder | |
| May (Best) | 27° | 20° | 9d·80mm | 7h | 75% | 9 | Moderate | Shoulder |
| June (Best) | 25° | 19° | 8d·60mm | 7h | 75% | 8 | Moderate | Shoulder |
| 24° | 18° | 9d·65mm | 7h | 76% | 8 | Busy | Peak | |
| August (Best) | 25° | 18° | 8d·60mm | 7h | 76% | 9 | Busy | Peak |
| September (Best) | 25° | 18° | 7d·50mm | 8h | 75% | 10 | Moderate | Shoulder |
| October (Best) | 26° | 19° | 7d·50mm | 8h | 75% | 11 | Moderate | Shoulder |
| November (Best) | 28° | 21° | 8d·80mm | 8h | 78% | 12 | Moderate | Shoulder |
| 29° | 22° | 12d·180mm | 7h | 81% | 12 | Very busy | Peak |
View Other Months
Mauritius September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Mauritius?
Mauritius in September is high. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Mauritius in September?
Mauritius September averages a high of 25°C and a low of 18°C.
Does it rain much in Mauritius in September?
Mauritius September averages 50mm of rainfall over about 7 rainy days.
What should I wear in Mauritius in September?
Dry-spring start — cotton + linen daytime, light cardigan for evenings (still cool at 18°C). Swimwear, SPF 30+. UV climbing back as days lengthen. Long-sleeve cover for trade-wind evenings.
What time are sunrise and sunset in Mauritius in September?
Mauritius September sunrise is 06:10 and sunset is 18:15, with 12h 5min of daylight.
What's the air quality like in Mauritius in September?
Mauritius September air quality (AQI) averages 33, rated Good. PM2.5 averages 10μg/m³.
What activities are recommended in Mauritius in September?
In September, Mauritius is great for Outdoor sightseeing (Chamarel + Black River + 7-color earth), Hiking Le Morne + Black River Gorges + Tamarin Falls, Whale shark sighting tours (begins this month).
Is September peak season in Mauritius?
Mauritius September crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Mauritius
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.