January weather forecast
Mahajanga, Madagascar

January, like December, in Mahajanga, Madagascar, is a moderately hot summer month, with an average temperature ranging between min 25.2°C (77.4°F) and max 29.9°C (85.8°F).

Temperature

In January, the average high-temperature is relatively the same as in December - a moderately hot 29.9°C (85.8°F). In January, in Mahajanga, the average low-temperature is 25.2°C (77.4°F).

Heat index

In January, the average heat index is appraised at a torrid 37°C (98.6°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, wind, clothing, 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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

January and February, with an average relative humidity of 78%, are the most humid months.

Rainfall

January is the month with the most rainfall in Mahajanga. Rain falls for 27.6 days and accumulates 254mm (10") of precipitation.

Sea temperature

In January, the average sea temperature in Mahajanga is 29.2°C (84.6°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 January is 12h and 56min.
On the first day of January, sunrise is at 05:26 and sunset at 18:29. On the last day of the month, sunrise is at 05:44 and sunset at 18:31 EAT.

Sunshine

In January, the average sunshine in Mahajanga is 9.4h.

UV index

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in January interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.