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 sea temperature 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
Weather in September
Temperature
A minor adjustment in Wilderness's average high-temperature is noted with the start of September, touching a still refreshing 18.5°C (65.3°F) from August's 18°C (64.4°F). Wilderness experiences an average low-temperature reading of 11.5°C (52.7°F) throughout September.Humidity
In September, the average relative humidity in Wilderness is 72%.Rainfall
In Wilderness, South Africa, in September, during 9.3 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, there are 128.6 rainfall days, and 309mm (12.17") of precipitation is accumulated.Sea temperature
In September, the average sea temperature is 16.8°C (62.2°F).Note: Most people find swimming in 16.8°C (62.2°F) unenjoyable. As the water temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes harder.
Daylight
The average length of the day in September in Wilderness is 11h and 53min.On the first day of the month, sunrise is at 06:47 and sunset at 18:11. On the last day of September, in Wilderness, sunrise is at 06:07 and sunset at 18:31 SAST.
Sunshine
In Wilderness, the average sunshine in September is 8h.UV index
The months with the lowest UV index in Wilderness, South Africa, are May through July and September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the UV index of 4 transforms into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What are the temperatures in Wilderness in September?
What is the average humidity in September in Wilderness?
How many days does it rain in September in Wilderness?
How cold is the water in September in Wilderness?
What is the average length of the day in September in Wilderness?
When is the sunrise / sunset in September in Wilderness?
How long on average sun shines in September in Wilderness?
When is the lowest UV index in Wilderness?
What is the UV index reading in September in Wilderness?
Average temperature in September
Wilderness, South Africa
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is February (24.8°C).
The month with the lowest average high temperature is July (17.8°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is January (17.8°C).
The coldest month (with the lowest average low temperature) is August (10.8°C).
Average pressure in September
Wilderness, South Africa
- Average pressure in September: 1018.9mbar
The month with the highest atmospheric pressure is July (1022mbar).
The months with the lowest atmospheric pressure are January and February (1013.7mbar).
Average wind speed in September
Wilderness, South Africa
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is June (13.7km/h).
The calmest month (with the lowest average wind speed) is May (11km/h).
Average humidity in September
Wilderness, South Africa
- Average humidity in September: 72%
The months with the highest relative humidity are February and March (75%).
The month with the lowest relative humidity is June (64%).
Average rainfall in September
Wilderness, South Africa
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is August (31mm).
The driest month (with the least rainfall) is December (16mm).
Average rainfall days in September
Wilderness, South Africa
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is May (7.3 days).
Average sea temperature in September
Wilderness, South Africa
- Average sea temperature in September: 16.8°C
The best month for swimming (with the highest average sea temperature) is January (20.6°C).
The coldest month (with the lowest average sea temperature) is August (16.3°C).
Average daylight in September /
Average sunshine in September
Wilderness, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is January (Average sunshine: 9h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 24min).
Average sunshine days in September
Wilderness, South Africa
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is May (21.7 days).
The month with the least sunshine days is December (14.6 days).
Average UV index in September
Wilderness, South Africa
- Average UV index in September: 4
The month with the highest UV index is December (UV index 6).
The months with the lowest UV index are May, June, July and September (UV index 4).
Average cloud cover in September
Wilderness, South Africa
- Average cloud cover in September: 32
The month with the most cloud cover is October (Cloud cover 38).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in September
Wilderness, South Africa
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Wilderness, South Africa
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