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 advent of September observes an average high-temperature of a still refreshing 18.8°C (65.8°F), nearly identical to August's 16.4°C (61.5°F). Gwynneville cools down to an average low-temperature of 11.8°C (53.2°F) throughout the month of September.Humidity
In September, the average relative humidity in Gwynneville is 69%.Rainfall
September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 33mm (1.3") of precipitation.Sea temperature
The month with the coldest seawater in Gwynneville is September, with an average sea temperature of 18.4°C (65.1°F).Note: Swimming in 18.4°C (65.1°F) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Gwynneville, the average length of the day in September is 11h and 53min.On the first day of the month, sunrise is at 6:14 am and sunset at 5:38 pm. On the last day of September, sunrise is at 5:34 am and sunset at 5:58 pm AEST.
Sunshine
In September, the average sunshine is 8.6h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index in Gwynneville, Australia. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Exercise prevention - Warding off sunburn is urged. When the Sun is at its strongest around midday, find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What are the temperatures in Gwynneville in September?
What is the average humidity in September in Gwynneville?
What is the driest month in Gwynneville?
How many days does it rain in September in Gwynneville?
What month is the sea coldest in Gwynneville?
How cold is the water in September in Gwynneville?
What is the average length of the day in September in Gwynneville?
What time are sunrise and sunset in September in Gwynneville?
How many hours of sunshine does Gwynneville have in September?
What are the months with the lowest UV index in Gwynneville?
How high is the UV index in September in Gwynneville?
Average temperature in September
Gwynneville, Australia
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is January (25.7°C).
The month with the lowest average high temperature is July (15.7°C).
- Average low temperature in September: 11.8°C
The months with the highest average low temperature are January and February (19°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).
Average pressure in September
Gwynneville, Australia
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is June (1020.8mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Gwynneville, Australia
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is August (16.2km/h).
The calmest month (with the lowest average wind speed) is April (13.9km/h).
Average humidity in September
Gwynneville, Australia
- Average humidity in September: 69%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Gwynneville, Australia
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is February (97mm).
The driest month (with the least rainfall) is September (33mm).
Average rainfall days in September
Gwynneville, Australia
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (9.5 days).
Average sea temperature in September
Gwynneville, Australia
- Average sea temperature in September: 18.4°C
The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.4°C).
Average daylight in September /
Average sunshine in September
Gwynneville, Australia
- 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 4min
The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).
Average sunshine days in September
Gwynneville, Australia
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is August (19.5 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in September
Gwynneville, Australia
- Average UV index in September: 4
The months with the highest UV index are January and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in September
Gwynneville, Australia
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Gwynneville, Australia
- 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).
Gwynneville, Australia
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