January weather forecast
Nelspruit, South Africa

January in Nelspruit, South Africa commences with temperatures reaching a high of 27.5°C (81.5°F) and dropping to lows of around 17.3°C (63.1°F). The shift from December introduces slightly cooler days and nights, while still retaining humidity levels above 75%. Rainfall is heavy with rainfall measuring 89mm (3.5"). The city experiences an average of 20.4 rainy days, a stark contrast to the less frequent rain expected in February. Exceptional wind speeds during January can reach around 9.1km/h (5.7mph), ensuring a breezy start to the New Year.

Temperature

In January, the average high-temperature in Nelspruit registers at a still moderately hot 27.5°C (81.5°F), nearly identical to December's 28°C (82.4°F). In Nelspruit, the average low-temperature during the month of January is a comfortable 17.3°C (63.1°F).

Heat index

The heat index in January is evaluated at a hot 31°C (87.8°F). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 79%.

Rainfall

January is the month with the most rainfall in Nelspruit. Rain falls for 20.4 days and accumulates 89mm (3.5") of precipitation.

Daylight

In January, the average length of the day in Nelspruit is 13h and 31min.
On the first day of January, sunrise is at 05:08 and sunset at 18:50. On the last day of the month, sunrise is at 05:30 and sunset at 18:47 SAST.

Sunshine

In January, the average sunshine is 8.8h.

UV index

January, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 6 during January morphs into the following directions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.