September weather forecastSiphofaneni, Swaziland
September
Weather in September
Entering into spring, Siphofaneni sees improved weather conditions in September. With the rising temperature, the city experiences longer daylight hours and more sunshine. Gradually increasing cloudiness and rainfall offer much-needed respite from the preceding dry months. Mild wind speeds and consistently good visibility contribute to the pleasant weather conditions. A gradual increase in pressure indicates a shift in weather patterns.Temperature
Siphofaneni in September witnesses an average high-temperature of a still warm 25.9°C (78.6°F), indicating a slight variation from August's 23.8°C (74.8°F). The September nights bear witness to a significant drop from the daytime highs, settling at an average temperature of 13.6°C (56.5°F).Humidity
In Siphofaneni, the average relative humidity in September is 59%.Rainfall
In Siphofaneni, in September, during 8.7 rainfall days, 18mm (0.71") of precipitation is typically accumulated. Throughout the year, there are 156.8 rainfall days, and 549mm (21.61") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 56min.On the first day of September, sunrise is at 06:05 and sunset at 17:40. On the last day of the month, sunrise is at 05:33 and sunset at 17:53 SAST.
Sunshine
In September, the average sunshine is 7.9h.UV index
April through October, with an average maximum UV index of 5, are months with the lowest UV index. 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: An average maximum UV index of 5 in September leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siphofaneni, Swaziland
- Average high temperature in September: 25.9°C
The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (21.4°C).
- Average low temperature in September: 13.6°C
The month with the highest average low temperature is December (17.5°C).
The coldest month (with the lowest average low temperature) is July (9.3°C).
Average pressure in September
Siphofaneni, Swaziland
- Average pressure in September: 1019.2mbar
The month with the highest atmospheric pressure is July (1024.1mbar).
The month with the lowest atmospheric pressure is January (1014mbar).
Average wind speed in September
Siphofaneni, Swaziland
- Average wind speed in September: 8.2km/h
The windiest month (with the highest average wind speed) is September (8.2km/h).
The calmest month (with the lowest average wind speed) is March (6.1km/h).
Average humidity in September
Siphofaneni, Swaziland
- Average humidity in September: 59%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Siphofaneni, Swaziland
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is December (110mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in September
Siphofaneni, Swaziland
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is December (22.7 days).
The month with the least rainy days is June (3.6 days).
Average daylight in September /
Average sunshine in September
Siphofaneni, Swaziland
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is November (Average sunshine: 9h and 0min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).
Average sunshine days in September
Siphofaneni, Swaziland
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is June (25.4 days).
The month with the least sunshine days is December (5.3 days).
Average UV index in September
Siphofaneni, Swaziland
- Average UV index in September: 5
The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 5).
Average cloud cover in September
Siphofaneni, Swaziland
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 14).
Average visibility in September
Siphofaneni, Swaziland
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February and March (7km).
