December weather forecast
Stone Town, Tanzania

December, the first month of the summer in Stone Town, is still a warm month, with an average temperature varying between 29.4°C (84.9°F) and 26.8°C (80.2°F).

Temperature

In Stone Town, the average high-temperature in December is practically the same as in November - a still moderately hot 29.4°C (84.9°F). The average low-temperature, in Stone Town, is 26.8°C (80.2°F).

Heat index

The average heat index in December is appraised at a very hot 35°C (95°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. Exposure to direct sunshine can increase heat index values 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', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, metabolic differences, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in December is 77%.

Rainfall

In Stone Town, during 26.2 rainfall days, 114mm (4.49") of precipitation is typically accumulated. Throughout the year, there are 255.1 rainfall days, and 1172mm (46.14") of precipitation is accumulated.

Daylight

The month with the longest days in Stone Town is December, with an average of 12h and 29min of daylight.
On the first day of the month, sunrise is at 05:58 and sunset at 18:25. On the last day of December, in Stone Town, sunrise is at 06:11 and sunset at 18:40 EAT.

Sunshine

In Stone Town, the average sunshine in December is 9.2h.

UV index

The months with the highest UV index in Stone Town are January through March, October through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.