Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The shift into September is marked by a modest rise in the average high-temperature, moving from August's pleasant 22.8°C (73°F) to a moderately hot 26.3°C (79.3°F). The average low-temperature of 12°C (53.6°F) in September represents a significant drop from the daily high.Humidity
August and September, with an average relative humidity of 45%, are the least humid months in Harrismith, South Africa.Rainfall
In September, in Harrismith, the rain falls for 8.2 days. Throughout September, 15mm (0.59") of precipitation is accumulated. Throughout the year, in Harrismith, there are 149.6 rainfall days, and 523mm (20.59") of precipitation is accumulated.Daylight
In Harrismith, the average length of the day in September is 11h and 56min.On the first day of September in Harrismith, sunrise is at 06:16 and sunset at 17:49. On the last day of the month, sunrise is at 05:42 and sunset at 18:03 SAST.
Sunshine
The average sunshine in September in Harrismith is 8.4h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Harrismith?
What is the least humid month in Harrismith?
What is the average humidity in September in Harrismith?
How many days does it rain in September in Harrismith?
What is the average length of the day in September in Harrismith?
When are sunrise and sunset in September in Harrismith?
How long on average sun shines in September in Harrismith?
What is the UV index intensity in September in Harrismith?
Average temperature in September
Harrismith, South Africa
- Average high temperature in September: 26.3°C
The warmest month (with the highest average high temperature) is December (29.3°C).
The month with the lowest average high temperature is June (19.7°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is January (16°C).
The coldest month (with the lowest average low temperature) is July (6.2°C).
Average pressure in September
Harrismith, South Africa
- Average pressure in September: 1019.5mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is December (1014.9mbar).
Average wind speed in September
Harrismith, South Africa
- Average wind speed in September: 8.6km/h
The windiest months (with the highest average wind speed) are October and November (8.9km/h).
The calmest month (with the lowest average wind speed) is May (6km/h).
Average humidity in September
Harrismith, South Africa
- Average humidity in September: 45%
The month with the highest relative humidity is February (73%).
The months with the lowest relative humidity are August and September (45%).
Average rainfall in September
Harrismith, South Africa
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is January (99mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in September
Harrismith, South Africa
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is December (22.5 days).
The month with the least rainy days is June (2.8 days).
Average daylight in September /
Average sunshine in September
Harrismith, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is October (Average sunshine: 11h and 6min).
The month with the least sunshine is April (Average sunshine: 7h and 6min).
Average sunshine days in September
Harrismith, South Africa
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is December (4.1 days).
Average UV index in September
Harrismith, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in September
Harrismith, South Africa
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 36).
The months with the least cloud cover are June and July (Cloud cover 9).
Average visibility in September
Harrismith, South Africa
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January and February (8km).
