September weather forecastAntisiranana, Madagascar

Weather in September

September heralds the arrival of spring in Antsiranana with temperatures climbing back up to around 29.5°C (85.1°F). The amount of rainfall remains low and continues to support outdoor activities. The sea finds itself warming up in response to the increased sunlight. More daylight hours and a lower UV index present optimal conditions for sightseeing. The city begins to welcome travelers back in anticipation of the upcoming warmer months.

Temperature

September's climate in Antisiranana shows a minor adjustment in average high-temperatures to a still warm 29.5°C (85.1°F) from August's 28.7°C (83.7°F). During September nights, Antisiranana witnesses a consistent average temperature of 20°C (68°F).

Rainfall

September is the month with the least rainfall. Rain falls for 2 days and accumulates 9mm (0.35") of precipitation.

Sea temperature

The months with the coldest seawater are August and September, with an average sea temperature of 25°C (77°F).
Note: Swimming, diving, and other water-related activities in temperatures between 25°C (77°F) and 29°C (84.2°F) are considered highly enjoyable and satisfying for longer durations without uneasiness.

Daylight

In Antisiranana, Madagascar, the average length of the day in September is 12h and 2min.
On the first day of the month, sunrise is at 05:46 and sunset at 17:39. On the last day of September, sunrise is at 05:26 and sunset at 17:38 EAT.

Sunshine

In September, the average sunshine is 9.8h.

UV index

The months with the highest UV index are January through April, September through December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 12 in September, converts into the following recommendations:
Carry out all important precautions, unprotected skin could get burns in no time. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Heads up! UV intensity is amplified by reflections from water and sand.