January weather forecast
Mattru, Sierra Leone

January, like December, is a hot winter month in Mattru, Sierra Leone, with an average temperature fluctuating between 23.8°C (74.8°F) and 31.7°C (89.1°F).

Temperature

January's climate shows a minor adjustment in average high-temperatures to a still tropical 31.7°C (89.1°F) from December's 31.3°C (88.3°F). The average temperature during January nights dips to a moderately hot 23.8°C (74.8°F).

Heat index

January's heat index is estimated at a scorching 40°C (104°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

January and February, with an average relative humidity of 72%, are the least humid months.

Rainfall

In Mattru, Sierra Leone, in January, it is raining for 5.6 days, with typically 7mm (0.28") of accumulated precipitation. In Mattru, Sierra Leone, during the entire year, the rain falls for 238.8 days and collects up to 1773mm (69.8") of precipitation.

Daylight

In January, the average length of the day is 11h and 46min.
On the first day of the month, sunrise is at 07:00 and sunset at 18:43. On the last day of January, sunrise is at 07:07 and sunset at 18:56 GMT.

Sunshine

The month with the most sunshine is January, with an average of 9.5h of sunshine.

UV index

The months with the highest UV index in Mattru are January through June, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: In January, a regular UV index of 7 translates into these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. 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. Boost your sun resistance with garments that are densely woven yet spacious.