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
The average high-temperature during September registers at a still pleasant 22.7°C (72.9°F), maintaining a close resemblance to the previous month. In September, Salt Rock records an average nighttime temperature of 15.7°C (60.3°F).Humidity
In September, the average relative humidity in Salt Rock is 73%.Rainfall
In Salt Rock, South Africa, during September, the rain falls for 14.1 days and regularly aggregates up to 34mm (1.34") of precipitation. In Salt Rock, South Africa, during the entire year, the rain falls for 182.6 days and collects up to 597mm (23.5") of precipitation.Sea temperature
In September, the average sea temperature is 22.1°C (71.8°F).Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 22.1°C (71.8°F) might be tempting. It is interesting to note that Olympians compete in 25°C (77°F) to 28°C (82.4°F) water temperatures.
Daylight
In September, the average length of the day is 11h and 55min.On the first day of the month, sunrise is at 06:09 and sunset at 17:40. On the last day of September, in Salt Rock, sunrise is at 05:34 and sunset at 17:55 SAST.
Sunshine
The average sunshine in September in Salt Rock, South Africa, is 6.9h.UV index
The average daily maximum UV index in September in Salt Rock is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health 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:
Be vigilant - Preventing sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Salt Rock in September?
What is the average humidity in September in Salt Rock?
How many days does it rain in September in Salt Rock?
What is the sea temperature in September in Salt Rock?
What is the average length of the day in September in Salt Rock?
When is the sunrise / sunset in September in Salt Rock?
How long on average sun shines in September in Salt Rock?
What is the UV index reading in September in Salt Rock?
Average temperature in September
Salt Rock, South Africa
- Average high temperature in September: 22.7°C
The warmest month (with the highest average high temperature) is February (26.5°C).
The month with the lowest average high temperature is July (21.3°C).
- Average low temperature in September: 15.7°C
The month with the highest average low temperature is February (20.2°C).
The coldest month (with the lowest average low temperature) is July (13.6°C).
Average pressure in September
Salt Rock, South Africa
- Average pressure in September: 1018.9mbar
The month with the highest atmospheric pressure is July (1023.1mbar).
The month with the lowest atmospheric pressure is January (1014.2mbar).
Average wind speed in September
Salt Rock, South Africa
- Average wind speed in September: 13.6km/h
The windiest month (with the highest average wind speed) is October (14.5km/h).
The calmest month (with the lowest average wind speed) is May (11km/h).
Average humidity in September
Salt Rock, South Africa
- Average humidity in September: 73%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is June (64%).
Average rainfall in September
Salt Rock, South Africa
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is June (11mm).
Average rainfall days in September
Salt Rock, South Africa
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is December (23.4 days).
The month with the least rainy days is June (6.5 days).
Average sea temperature in September
Salt Rock, South Africa
- Average sea temperature in September: 22.1°C
The best months for swimming (with the highest average sea temperature) are February and March (26.1°C).
The coldest month (with the lowest average sea temperature) is August (21.3°C).
Average daylight in September /
Average sunshine in September
Salt Rock, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is February (Average sunshine: 8h and 30min).
The month with the least sunshine is April (Average sunshine: 5h and 54min).
Average sunshine days in September
Salt Rock, South Africa
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is June (21.6 days).
The month with the least sunshine days is December (5.4 days).
Average UV index in September
Salt Rock, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, February, March and December (UV index 6).
The month with the lowest UV index is October (UV index 4).
Average cloud cover in September
Salt Rock, South Africa
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Salt Rock, South Africa
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
Salt Rock, South Africa
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