September weather forecast
Mahajanga, Madagascar

Weather in September

September, the first month of the spring in Mahajanga, is a tropical month, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 30.9°C (87.6°F).
The ideal sea water temperature of 26.3°C (79.3°F) and only 3.9 rainfall days, with 3mm (0.12") of accumulated rainfall, makes September the best time for swimming and other water activities.

Temperature

In September, the average high-temperature is almost the same as in August - a tropical 30.9°C (87.6°F). In September, in Mahajanga, the average low-temperature is 21.5°C (70.7°F).

Heat index

In September, the average heat index is calculated to be a tropical 34.2°C (93.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, metabolic differences, wind, and differences in body mass, height, and shape affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

August and September, with an average relative humidity of 58%, are the least humid months in Mahajanga.

Rainfall

In September, in Mahajanga, the rain falls for 3.9 days. Throughout September, 3mm (0.12") of precipitation is accumulated. Throughout the year, in Mahajanga, there are 161.5 rainfall days, and 817mm (32.17") of precipitation is accumulated.

Sea temperature

In Mahajanga, Madagascar, the average seawater temperature in September is 26.3°C (79.3°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Mahajanga, Madagascar, the average length of the day in September is 12h and 1min.
On the first day of the month, sunrise is at 06:00 and sunset at 17:48. On the last day of September, in Mahajanga, sunrise is at 05:37 and sunset at 17:51 EAT.

Sunshine

In September, the average sunshine is 9.8h.

UV index

January through May, August through December, with an average maximum UV index of 7, are months with the highest UV index in Mahajanga, Madagascar. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in September in Mahajanga?

The average high-temperature, in September, in Mahajanga, Madagascar, is 30.9°C (87.6°F), while the average low-temperature is 21.5°C (70.7°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 34.2°C (93.6°F).

What are the least humid months in Mahajanga?

The months with the lowest humidity are August and September, with an average relative humidity of 58%.

What is the average humidity in September in Mahajanga?

In September, the average relative humidity in Mahajanga is 58%.

How much does it rain in Mahajanga in September?

In Mahajanga, during September, the rain falls for 3.9 days and regularly aggregates up to 3mm (0.12") of precipitation.

What is the sea water temperature in September in Mahajanga?

In Mahajanga, Madagascar, in September, the average water temperature is 26.3°C (79.3°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Mahajanga?

In September, the average day length is 12h and 1min.

What time are sunrise and sunset in September in Mahajanga?

In September, on the first day of the month, sunrise is at 06:00 and sunset at 17:48. On the last day of the month, in Mahajanga, Madagascar, sunrise is at 05:37 and sunset at 17:51 EAT.

How many hours of sunshine does Mahajanga have in September?

In September, the average sunshine duration is 9.8h.

When is the highest UV index in Mahajanga?

The months with the highest UV index in Mahajanga, Madagascar, are January through May, August through December, with an average maximum UV index of 7.

How high is the UV index in September in Mahajanga?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Average temperature in September
Mahajanga, Madagascar

Average temperature in September - Mahajanga, Madagascar
  • Average high temperature in September: 30.9°C

The warmest month (with the highest average high temperature) is November (31.7°C).
The month with the lowest average high temperature is July (28.8°C).

  • Average low temperature in September: 21.5°C

The month with the highest average low temperature is December (25.8°C).
The coldest month (with the lowest average low temperature) is July (20.3°C).

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Average pressure in September
Mahajanga, Madagascar

Average pressure in September - Mahajanga, Madagascar
  • Average pressure in September: 1016.1mbar

The month with the highest atmospheric pressure is July (1017.3mbar).
The month with the lowest atmospheric pressure is February (1009.9mbar).

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Average wind speed in September
Mahajanga, Madagascar

Average wind speed in September - Mahajanga, Madagascar
  • Average wind speed in September: 14.3km/h

The windiest month (with the highest average wind speed) is July (14.6km/h).
The calmest month (with the lowest average wind speed) is March (10.2km/h).

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Average humidity in September
Mahajanga, Madagascar

Average humidity in September - Mahajanga, Madagascar
  • Average humidity in September: 58%

The months with the highest relative humidity are January and February (78%).
The months with the lowest relative humidity are August and September (58%).

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Average rainfall in September
Mahajanga, Madagascar

Average rainfall in September - Mahajanga, Madagascar
  • Average rainfall in September: 3mm

The wettest month (with the highest rainfall) is January (254mm).
The driest month (with the least rainfall) is July (2mm).

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Average rainfall days in September
Mahajanga, Madagascar

Average rainfall days in September - Mahajanga, Madagascar
  • Average rainfall days in September: 3.9 days

The month with the highest number of rainy days is January (27.6 days).
The month with the least rainy days is July (1.8 days).

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Average sea temperature in September
Mahajanga, Madagascar

Average sea temperature in September - Mahajanga, Madagascar
  • Average sea temperature in September: 26.3°C

The best month for swimming (with the highest average sea temperature) is February (29.7°C).
The coldest month (with the lowest average sea temperature) is August (25.8°C).

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Average daylight in September /
Average sunshine in September
Mahajanga, Madagascar

Average daylight in September / Average sunshine in September - Mahajanga, Madagascar
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 13h and 2min).
The month with the shortest days is June (Average daylight: 11h and 13min).

  • Average sunshine in September: 9h and 48min

The month with the most sunshine is November (Average sunshine: 11h and 18min).
The months with the least sunshine are April and August (Average sunshine: 7h and 30min).

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Average sunshine days in September
Mahajanga, Madagascar

Average sunshine days in September - Mahajanga, Madagascar
  • Average sunshine days in September: 25.3 days

The month with the most sunshine days is July (28.8 days).
The month with the least sunshine days is January (3.3 days).

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Average UV index in September
Mahajanga, Madagascar

Average UV index in September - Mahajanga, Madagascar
  • Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 7).
The months with the lowest UV index are June and July (UV index 6).

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Average cloud cover in September
Mahajanga, Madagascar

Average cloud cover in September - Mahajanga, Madagascar
  • Average cloud cover in September: 12

The month with the most cloud cover is January (Cloud cover 45).
The months with the least cloud cover are August and September (Cloud cover 12).

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Average visibility in September
Mahajanga, Madagascar

Average visibility in September - Mahajanga, Madagascar
  • Average visibility in September: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).

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