September weather forecast
Herefords, Swaziland

September experiences an extended period of sunshine, combined with higher temperatures, hinting at the impending summer season. A considerable surge in rainfall to 11mm (0.43") signals the start of the wet season in Herefords, Swaziland. The wind also contributes to these weather shifts, maintaining an average speed of 8.5km/h (5.3mph) during the month. This means a transition into more tumultuous weather, leading to unpredictable patterns. Interestingly, as October approaches, higher temperatures and rainfall are expected.

Temperature

The advent of September brings an average high-temperature of a still moderately hot 27.5°C (81.5°F), exhibiting minor difference from the previous month. With a notable difference from peak temperatures, an average of 15.5°C (59.9°F) marks the nights in September.

Heat index

September's average heat index is evaluated at 28°C (82.4°F). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Understand that the heat index values take into account shaded locations and mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 56%.

Rainfall

In Herefords, Swaziland, during September, the rain falls for 7.3 days and regularly aggregates up to 11mm (0.43") of precipitation. In Herefords, during the entire year, the rain falls for 138.5 days and collects up to 488mm (19.21") of precipitation.

Daylight

The average length of the day in September is 11h and 57min.
On the first day of the month, sunrise is at 06:05 and sunset at 17:42. On the last day of September, sunrise is at 05:34 and sunset at 17:53 SAST.

Sunshine

In September, the average sunshine is 7.9h.

UV index

January through March, September through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 6 in September transforms into this advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.