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
East London's average high-temperature in September is a still agreeable 21.2°C (70.2°F), indicating a subtle variation from August. During the nights in September, East London experiences a consistent average temperature of 15.2°C (59.4°F).Humidity
In September, the average relative humidity in East London is 69%.Rainfall
In East London, in September, it is raining for 10 days, with typically 18mm (0.71") of accumulated precipitation. Throughout the year, in East London, there are 140.9 rainfall days, and 352mm (13.86") of precipitation is accumulated.Sea temperature
In East London, in September, the average water temperature is 21.3°C (70.3°F).Note: The majority of people do not enjoy swimming in 21.3°C (70.3°F). The difficulty in controlling breathing escalates as the temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 11h and 54min.On the first day of the month, sunrise is at 06:25 and sunset at 17:51. On the last day of September, in East London, sunrise is at 05:46 and sunset at 18:10 SAST.
Sunshine
The average sunshine in September in East London is 7.5h.UV index
March, May through November, 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 medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 5 during September translates into the following guidance:
Ensure safety - Sun damage prevention is strongly urged. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be alert! The reflection of water and sand augments UV radiation intensity.
Frequently asked questions
What are September temperatures in East London?
What is the average humidity in September in East London?
How many days does it rain in September in East London?
What is the sea temperature in September in East London?
What is the average length of the day in September in East London?
What time are sunrise and sunset in September in East London?
How long on average sun shines in September in East London?
When is the lowest UV index in East London?
What is the UV index reading in September in East London?
Average temperature in September
East London, South Africa
- Average high temperature in September: 21.2°C
The warmest month (with the highest average high temperature) is February (25.7°C).
The month with the lowest average high temperature is July (20.8°C).
- Average low temperature in September: 15.2°C
The month with the highest average low temperature is February (20.3°C).
The coldest month (with the lowest average low temperature) is July (14.2°C).
Average pressure in September
East London, South Africa
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is July (1022.5mbar).
The month with the lowest atmospheric pressure is January (1013.8mbar).
Average wind speed in September
East London, South Africa
- Average wind speed in September: 20.5km/h
The windiest month (with the highest average wind speed) is October (20.7km/h).
The calmest month (with the lowest average wind speed) is May (16.8km/h).
Average humidity in September
East London, South Africa
- Average humidity in September: 69%
The months with the highest relative humidity are January and December (78%).
The month with the lowest relative humidity is June (58%).
Average rainfall in September
East London, South Africa
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is February (44mm).
The driest month (with the least rainfall) is May (14mm).
Average rainfall days in September
East London, South Africa
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is December (15.9 days).
The month with the least rainy days is June (6.3 days).
Average sea temperature in September
East London, South Africa
- Average sea temperature in September: 21.3°C
The best month for swimming (with the highest average sea temperature) is March (25.5°C).
The coldest month (with the lowest average sea temperature) is August (20.4°C).
Average daylight in September /
Average sunshine in September
East London, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is November (Average sunshine: 8h and 42min).
The month with the least sunshine is April (Average sunshine: 6h and 18min).
Average sunshine days in September
East London, South Africa
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is June (21.8 days).
The month with the least sunshine days is December (12.5 days).
Average UV index in September
East London, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, February, April and December (UV index 6).
The months with the lowest UV index are March, May, June, July, August, September, October and November (UV index 5).
Average cloud cover in September
East London, South Africa
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
East London, 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).
East London, South Africa
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