January weather forecast
Antalaha, Madagascar

January, the same as December, is a moderately hot summer month in Antalaha, Madagascar, with temperature in the range of an average low of 23.6°C (74.5°F) and an average high of 29.7°C (85.5°F).

Temperature

In January, the average high-temperature is almost the same as in December - a still warm 29.7°C (85.5°F). In Antalaha, in January, the average low-temperature is 23.6°C (74.5°F).

Heat index

The average heat index in January is evaluated at a sweltering 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. 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 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like differences in body mass, height, and shape, pregnancy, clothing, and activity influence one's weather impression. 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 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Antalaha, Madagascar, the average relative humidity in January is 81%.

Rainfall

The wettest months are January and March, with an average 132mm (5.2") of rainfall.

Sea temperature

In Antalaha, Madagascar, the average seawater temperature in January is 28.7°C (83.7°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In January, the average length of the day is 12h and 54min.
On the first day of the month, sunrise is at 05:12 and sunset at 18:12. On the last day of January, in Antalaha, sunrise is at 05:29 and sunset at 18:15 EAT.

Sunshine

In January, the average sunshine in Antalaha is 10.3h.

UV index

January through March, November and December, with an average maximum UV index of 7, are months with the highest UV index in Antalaha. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.