December weather forecast
Mahajanga, Madagascar

December marks the end of the year with a significant increase in rainfall, reaching 117mm (4.61"). On comparison, it draws a stark contrast with November's conditions, moving the city into a far wetter state. Despite this, Mahajanga remains a destination of interest, with the high temperature and rise in sea temperatures complementing the wet atmosphere. It is a season of reinvigoration for the wildlife and vegetation, painting the city in stunning shades of green as the year comes to a close.

Temperature

December's arrival brings an average high-temperature of a still tropical 31.3°C (88.3°F), slightly deviating from November's 31.7°C (89.1°F). An average nighttime temperature of 25.8°C (78.4°F) is observed during December.

Heat index

Throughout December, the heat index is evaluated at a torrid 39°C (102.2°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in December in Mahajanga is 71%.

Rainfall

In Mahajanga, in December, 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 December, the average sea temperature is 29.3°C (84.7°F).
Note: Water temperature ranging between 25°C (77°F) and 29°C (84.2°F) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

The month with the longest days in Mahajanga is December, with an average of 13h and 0min of daylight.
On the first day of the month, sunrise is at 05:14 and sunset at 18:13. On the last day of December, sunrise is at 05:26 and sunset at 18:29 EAT.

Sunshine

In December, the average sunshine 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 in Mahajanga. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 7 in December, converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be wary! Reflections from sand and water make UV radiation more intense.