Monthly climate guide
Antananarivo weather in September
Expect warm weather in Antananarivo in September: afternoons reach about 21°C (70°F), while nights drop to around 10°C (50°F). Around 43 mm of rain falls over the month (fairly dry), and skies are a mix of sun and cloud. Daytime highs are 2°C warmer than August and 2°C cooler than October.
What stands out in September
- Rain is well below Antananarivo's usual level (around 80% less).
- It's one of the drier stretches of the year in Antananarivo.
- Skies are at their clearest this time of year.
- Just 370 km apart, but Antananarivo runs about 12°C cooler than Morondava this month.
It's usually the driest month of the year.
Avg high
21°C
70°F
Avg low
10°C
50°F
Rainfall
43 mm
fairly dry
Humidity
82%
relative
Sky
37%
cloud · a mix of sun and cloud
Antananarivo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 24°C / 74°F | 16°C / 60°F | 467 mm | 87% | 79% |
| February | 23°C / 74°F | 16°C / 60°F | 413 mm | 88% | 78% |
| March | 23°C / 73°F | 15°C / 59°F | 338 mm | 89% | 70% |
| April | 22°C / 72°F | 14°C / 57°F | 212 mm | 88% | 53% |
| May | 20°C / 69°F | 12°C / 53°F | 86 mm | 88% | 41% |
| June | 18°C / 65°F | 10°C / 50°F | 94 mm | 89% | 40% |
| July | 18°C / 64°F | 9°C / 48°F | 86 mm | 87% | 40% |
| August | 19°C / 66°F | 9°C / 49°F | 51 mm | 85% | 37% |
| September | 21°C / 70°F | 10°C / 50°F | 43 mm | 82% | 37% |
| October | 24°C / 75°F | 13°C / 55°F | 102 mm | 79% | 49% |
| November | 25°C / 76°F | 14°C / 58°F | 246 mm | 80% | 62% |
| December | 25°C / 76°F | 15°C / 60°F | 381 mm | 83% | 70% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
- Sunglasses
Is September a good time to visit Antananarivo?
Compare the months in the chart above to find your ideal window.
Best time to visit Antananarivo →Other Madagascar cities in September
Cite or embed this data
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Antananarivo weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/madagascar/antananarivo/september
<a href="https://weathercompare.eu/weather/madagascar/antananarivo/september">Antananarivo weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/madagascar/antananarivo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Antananarivo weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/madagascar/antananarivo/september">Antananarivo weather in September</a> – WeatherCompare</p>
Antananarivo in September: quick answers
Is September a good time to visit Antananarivo?
Yes. September is one of the best months for Antananarivo, with highs around 21°C and about 43 mm of rain.
How warm is Antananarivo in September?
Average highs are about 21°C (70°F) and average lows about 10°C (50°F), based on 10 years of daily data.
Does it rain a lot in Antananarivo in September?
Antananarivo typically gets around 43 mm of rain in September — fairly dry. It's usually the driest month of the year.
Figures are long-term averages for the area around Antananarivo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.