September · Madagascar
Best time to visit Nosy Be in September Weather, crowds & prices
Weather in Nosy Be in September
Average temperature 25°C, 34 mm of rain, about 30 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.7/10
Ranked #5 of 12 months
- Avg temp
- 25°C
- Rainfall
- 34 mm
- Humidity
- 73%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Nosy Be scores 9.7/10 for beach and coastal travel - an above-average month (#5 of 12). Expect around 25°C, 34 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Perfume-island beaches and snorkel days peak in the dry June-September stretch.
September ranks 5th of 12 for Nosy Be — one of the best windows
With 25°C (78°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
With around 34 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 11.9 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Nosy Be at 9.7/10 (5th of 12), just behind October at 9.9/10.
Pack light clothing, swimwear and real sun protection.
Budget for peak pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Nosy Be in September?
- In September, Nosy Be averages 25°C, 34 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 9.7/10.
- Is September a good time to visit Nosy Be?
- September earns a 9.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Nosy Be in September?
- Expect about 34 mm of rain in September. Average humidity is 73% and there are about 30 days with 6+ hours of sunshine.
Curated in Nosy Be
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Nosy Be, Madagascar. Live activities and tours from GetYourGuide, matched to this destination.