January weather forecast
Calai, Angola

January, like December, is another tropical summer month in Calai, Angola, with temperature in the range of an average low of 20.7°C (69.3°F) and an average high of 30.5°C (86.9°F).

Temperature

January ushers in an average high-temperature of a still tropical 30.5°C (86.9°F), aligning closely with the preceding month. Calai, during the nights of January, experiences an average temperature drop to a pleasant 20.7°C (69.3°F).

Heat index

In January, the average heat index is evaluated at a sweltering 35°C (95°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Understanding the heat index involves considering values for shaded locales with light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in January is 63%.

Rainfall

January is the month with the most rainfall. Rain falls for 14.8 days and accumulates 74mm (2.91") of precipitation.

Daylight

The average length of the day in January is 13h and 4min.
On the first day of the month, sunrise is at 05:08 and sunset at 18:19. On the last day of January, sunrise is at 05:27 and sunset at 18:21 WAT.

Sunshine

With an average of 9h of sunshine, January has the least sunshine of the year.

UV index

In Calai, the average daily maximum UV index in January is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the maximum UV index of 6 transforms into these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.