December weather forecast
Stone Town, Tanzania

December in Stone Town is characterized by a significant increase in precipitation bringing in the town's second rainy season. The town records a rise in rainfall from 106mm (4.17") in November to a substantial 114mm (4.49") in December. This climb in rainfall is closely followed by a further increase in rainfall days, which remains high until the turn of the new year. December’s higher rainfall and cloud cover is characteristic of Stone Town's second rainy season, contrasting with the preceding months. Despite the high rainfall and increased cloud cover, the temperature remains warm and pleasant, making December a comfortable month to experience Stone Town's climate.

Temperature

The arrival of December is marked by an average high-temperature of a still moderately hot 29.4°C (84.9°F), bearing a close resemblance to November. Stone Town, in December, logs an average low-temperature of 26.8°C (80.2°F), a subtle step down from daytime readings.

Heat index

The heat index value for December is estimated at a torrid 35°C (95°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. 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 'apparent temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in December is 77%.

Rainfall

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

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year in Stone Town.
On the first day of December, sunrise is at 05:58 and sunset at 18:26. On the last day of the month, sunrise is at 06:12 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 estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 7 suggests this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.