December weather forecast
Mahajanga, Madagascar

Weather in December

December, the first month of the summer in Mahajanga, is still a tropical month, with an average temperature ranging between min 25.8°C (78.4°F) and max 31.3°C (88.3°F).

Temperature

In Mahajanga, Madagascar, the average high-temperature in December is practically the same as in November - a still tropical 31.3°C (88.3°F). In Mahajanga, in December, the average low-temperature is 25.8°C (78.4°F).

Heat index

In December, the average heat index is appraised at a very hot 39°C (102.2°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like pregnancy, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In December, the average relative humidity in Mahajanga is 71%.

Rainfall

In Mahajanga, it is raining for 23.5 days, with typically 117mm (4.61") of accumulated precipitation. In Mahajanga, during the entire year, the rain falls for 161.5 days and collects up to 817mm (32.17") of precipitation.

Sea temperature

In Mahajanga, the average seawater temperature in December is 29.3°C (84.7°F).
Note: 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.

Daylight

December has the longest days of the year in Mahajanga, with an average of 13h and 2min of daylight.
On the first day of December, sunrise is at 05:13 and sunset at 18:13. On the last day of the month, sunrise is at 05:26 and sunset at 18:28 EAT.

Sunshine

The average sunshine in December is 11.2h.

UV index

January through May, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in December in Mahajanga?

In December, the average high-temperature is 31.3°C (88.3°F), and the average low-temperature is 25.8°C (78.4°F). in December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 39°C (102.2°F).

What is the average humidity in December in Mahajanga?

In December, the average relative humidity in Mahajanga is 71%.

How much does it rain in Mahajanga in December?

In December, the rain falls for 23.5 days. Throughout December, 117mm (4.61") of precipitation is accumulated.

How warm is the water in December in Mahajanga?

In Mahajanga, Madagascar, the average seawater temperature in December is 29.3°C (84.7°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.

When are the longest days in Mahajanga?

December has the longest days of the year, with an average of 13h and 2min of daylight.

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

The average day length in December is 13h and 2min.

When is the sunrise / sunset in December in Mahajanga?

In December, on the first day of the month, sunrise is at 05:13 and sunset at 18:13. On the last day of the month, sunrise is at 05:26 and sunset at 18:28 EAT.

How long on average sun shines in December in Mahajanga?

In Mahajanga, Madagascar, the average sunshine duration in December is 11.2h.

What are the months with the highest UV index in Mahajanga?

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

What is the UV index reading in December in Mahajanga?

In Mahajanga, the average daily maximum UV index in December is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Average temperature in December
Mahajanga, Madagascar

Average temperature in December - Mahajanga, Madagascar
  • Average high temperature in December: 31.3°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 December: 25.8°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 December
Mahajanga, Madagascar

Average pressure in December - Mahajanga, Madagascar
  • Average pressure in December: 1010.8mbar

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 December
Mahajanga, Madagascar

Average wind speed in December - Mahajanga, Madagascar
  • Average wind speed in December: 11.1km/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 December
Mahajanga, Madagascar

Average humidity in December - Mahajanga, Madagascar
  • Average humidity in December: 71%

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 December
Mahajanga, Madagascar

Average rainfall in December - Mahajanga, Madagascar
  • Average rainfall in December: 117mm

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 December
Mahajanga, Madagascar

Average rainfall days in December - Mahajanga, Madagascar
  • Average rainfall days in December: 23.5 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 December
Mahajanga, Madagascar

Average sea temperature in December - Mahajanga, Madagascar
  • Average sea temperature in December: 29.3°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 December /
Average sunshine in December
Mahajanga, Madagascar

Average daylight in December / Average sunshine in December - Mahajanga, Madagascar
  • Average daylight in December: 13h and 2min

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 December: 11h and 12min

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 December
Mahajanga, Madagascar

Average sunshine days in December - Mahajanga, Madagascar
  • Average sunshine days in December: 7.2 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 December
Mahajanga, Madagascar

Average UV index in December - Mahajanga, Madagascar
  • Average UV index in December: 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 December
Mahajanga, Madagascar

Average cloud cover in December - Mahajanga, Madagascar
  • Average cloud cover in December: 31

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 December
Mahajanga, Madagascar

Average visibility in December - Mahajanga, Madagascar
  • Average visibility in December: 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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