May weather forecast
Rundu, Namibia

Rundu experiences its driest month in May, with rainfall almost disappearing, registering a meagre 1mm (0.04"). The month is marked by a deep plunge in temperatures and humidity levels, transitioning from April’s semi-arid climate to a full-blown arid climate. A qualifying feature of May is the significant increase in wind speed. Besides, the length of day and sunshine hours remain nearly constant, undergoing only minute changes. Despite these developments, May ushers in a comforting cool weather, ideal for travellers and locals alike.

Temperature

Rundu's average high-temperature in May is a still warm 27.7°C (81.9°F), indicating a subtle variation from April. Rundu documents a striking divergence from daytime highs, with an average nighttime temperature of 14.1°C (57.4°F) in May.

Heat index

The average heat index in May is calculated to be 27°C (80.6°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

The average relative humidity in May is 40%.

Rainfall

May is the last month it rains. During 0.9 rainfall days, in May, Rundu aggregates 1mm (0.04") of precipitation. Throughout the year, there are 89 rainfall days, and 324mm (12.76") of precipitation is accumulated.

Daylight

In May, the average length of the day is 11h and 17min.
On the first day of May, sunrise is at 06:54 and sunset at 18:21. On the last day of the month, sunrise is at 07:04 and sunset at 18:12 CAT.

Sunshine

In Rundu, the average sunshine in May is 9.9h.

UV index

The months with the lowest UV index are May through July, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.