December weather forecast
Mombasa, Kenya

December graces Mombasa with an increase in rainfall arriving at 46mm (1.81") from the 26mm (1.02") observed in November, wrapping up the year on a wet note. City streets liven up with holiday vibes under the shadowy cloud cover. Though December carries more rainfall, days remain comfortably warm allowing for the city's pulsating life to thrive. Comparatively, December records more rainfall and slightly lower temperatures relative to January. The year's finale sees a continuity in the prevalent weather conditions extending into the following year.

Temperature

The transition into December in Mombasa marks the average high-temperature at a still hot 30.8°C (87.4°F), differing minimally from November's 30.2°C (86.4°F). Throughout December, Mombasa records an average temperature of 24.5°C (76.1°F) at night.

Heat index

The heat index in December is estimated at a very hot 39°C (102.2°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The months with the highest humidity are January, May, September through December, with an average relative humidity of 77%.

Rainfall

In Mombasa, in December, it is raining for 21.2 days, with typically 46mm (1.81") of accumulated precipitation. In Mombasa, during the entire year, the rain falls for 167.2 days and collects up to 312mm (12.28") of precipitation.

Sea temperature

In Mombasa, in December, the average water temperature is 28.5°C (83.3°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

December has the longest days of the year, with an average of 12h and 24min of daylight.
On the first day of December in Mombasa, Kenya, sunrise is at 06:00 and sunset at 18:20. On the last day of the month, sunrise is at 06:13 and sunset at 18:35 EAT.

Sunshine

In Mombasa, the average sunshine in December is 9.1h.

UV index

The months with the highest UV index in Mombasa 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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take caution! The UV rays from the Sun gain strength from sand and water reflections.