Madagascar
Nosy Be in September: weather, sea & travel advice
This month's data profile
Sea conditions lead
Nosy Be in September is climatically well suited to beach holidays, family holidays, city breaks and active holidays and hiking. The average daily high is around 28 °C, and the sea is about 27 °C. With about 3 rainy days it is very dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
89/100 · #3
Warmth
#9
Dryness
#3
Sun
#3
Sea warmth
#11
Published best categories: Overall, Beach, City break, Active, Family
Nosy Be · SeptemberPhoto: Thomas Fuhrmann · CC BY-SA 4.0Climate facts
- Average high
- 28 °C
- Average low
- 23 °C
- Sea
- 27 °C
- Rainy days (est.)
- 3 rainy days (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 69 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 27 | 23 | 2 | 9 | 7.2 | 69 | 1.5 | 27 | 91 |
| September (selected) | 28 | 23 | 3 | 12 | 8.2 | 69 | 1.5 | 27 | 89 |
| October | 29 | 24 | 6 | 23 | 8.6 | 71 | 1.6 | 28 | 83 |
How do the previous and next months compare?
Baseline: September (89/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | +2 | -0.8 °C | -0.5 °C | -0.4 | -3.6 mm | -1 h | -0.6 % | -0.1 m/s | -0.3 °C |
| October | -6 | +0.9 °C | +1 °C | +3.3 | +10.3 mm | +0.4 h | +1.8 % | +0.1 m/s | +0.8 °C |
All twelve months in context
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Where to stay in Nosy Be
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Frequently asked questions
How warm is Nosy Be in September?
The average daily high is around 28 °C, with an average daily low of about 23 °C.
Can you swim in Nosy Be in September?
The sea is about 27 °C (warm).
Does it rain a lot in Nosy Be in September?
The curated estimate is about 3 rainy days per month, not a directly measured long-term average. Total precipitation averages around 12 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Nosy Be?
By the climate score, June, July, August and September are the strongest months for Nosy Be. For a beach trip: June, July, August and September. September is one of them.