January weather forecast
Stone Town, Tanzania

The weather in Stone Town, Tanzania, typically begins the year reliably warm, similar to December's tropical temperatures. A high of 29.4°C (84.9°F) precedes slightly cooler nights marked by a low of 27°C (80.6°F), characteristic of the town's moderate tropical climate. Predominantly, the winds blow steadily and significantly, affecting the feel of the temperature. Compared to the upcoming February, January is marked by slightly heavier winds and a higher percentage of cloud cover. Despite the heat, the weather remains pleasant and welcoming for outdoor activities, especially given the relatively clear skies created by the moderate cloud cover.

Temperature

On stepping into January, Stone Town registers an average high-temperature of a still moderately hot 29.4°C (84.9°F), paralleling the temperature of the previous month. Stone Town's nocturnal average in January closely mirrors its daytime temperatures, settling at a still warm 27°C (80.6°F).

Heat index

January's mean heat index is estimated at a fiery hot 35°C (95°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. 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 highly important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

January, April, May and November, with an average relative humidity of 78%, are the most humid months in Stone Town.

Rainfall

In Stone Town, in January, during 16.6 rainfall days, 56mm (2.2") of precipitation is typically accumulated. In Stone Town, Tanzania, during the entire year, the rain falls for 255.1 days and collects up to 1172mm (46.14") of precipitation.

Daylight

The average length of the day in January in Stone Town, Tanzania, is 12h and 26min.
On the first day of January in Stone Town, sunrise is at 06:12 and sunset at 18:40. On the last day of the month, sunrise is at 06:25 and sunset at 18:47 EAT.

Sunshine

In January, the average sunshine in Stone Town is 8.5h.

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: A typical high UV index of 7 in January suggests the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.