December weather forecast
Manaratsandry, Madagascar

December, the first month of the summer in Manaratsandry, is also a hot month, with temperature in the range of an average high of 31.3°C (88.3°F) and an average low of 25.8°C (78.4°F).

Temperature

The commencement of December records an average high-temperature of a still tropical 31.3°C (88.3°F), barely varying from November's 31.7°C (89.1°F). In December, the average low-temperature in Manaratsandry records at a moderately hot 25.8°C (78.4°F) during the nights.

Heat index

For December, the heat index is calculated to be a torrid 39°C (102.2°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Manaratsandry, Madagascar, during December, the rain falls for 23.5 days and regularly aggregates up to 117mm (4.61") of precipitation. In Manaratsandry, Madagascar, during the entire year, the rain falls for 161.5 days and collects up to 817mm (32.17") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 6min of daylight.
On the first day of the month, sunrise is at 05:12 and sunset at 18:13. On the last day of December, in Manaratsandry, sunrise is at 05:24 and sunset at 18:29 EAT.

Sunshine

In December, the average sunshine in Manaratsandry 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 Manaratsandry. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 7 in December leads to these recommendations:
Ward off overexposure. Defence against solar harm is crucial. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.