December weather forecast
Yinsu, Namibia

December, the first month of the summer in Yinsu, is still a tropical month, with an average temperature fluctuating between 31.2°C (88.2°F) and 21.2°C (70.2°F).

Temperature

The arrival of December coincides with an average high-temperature of a still hot 31.2°C (88.2°F), indicating a minimal shift from November's 33.3°C (91.9°F). Throughout the month of December, the average temperature dips to an agreeable 21.2°C (70.2°F) at night.

Heat index

The heat index value for December is calculated to be a fiery hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Yinsu, the average relative humidity in December is 60%.

Rainfall

In December, the rain falls for 18.6 days. Throughout December, 69mm (2.72") of precipitation is accumulated. Throughout the year, there are 89 rainfall days, and 324mm (12.76") of precipitation is accumulated.

Daylight

With an average of 13h and 12min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 06:01 and sunset at 19:08. On the last day of the month, sunrise is at 06:13 and sunset at 19:24 CAT.

Sunshine

In December, the average sunshine is 10.2h.

UV index

The months with the highest UV index are September, October and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 7 translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.