September weather forecastTwo Rocks, Australia
September
Weather in September
September, the first month of the spring in Two Rocks, is still a refreshing month, with an average temperature varying between 18.5°C (65.3°F) and 11.2°C (52.2°F).Temperature
As Two Rocks welcomes September, the average high-temperature stabilizes at a still enjoyable 18.5°C (65.3°F), showing little deviation from August's 17.7°C (63.9°F). Nighttime temperatures in September average to a fresh 11.2°C (52.2°F) in Two Rocks.Humidity
In September, the average relative humidity in Two Rocks is 71%.Rainfall
In September, the rain falls for 13.2 days. Throughout September, 34mm (1.34") of precipitation is accumulated. In Two Rocks, during the entire year, the rain falls for 115.1 days and collects up to 386mm (15.2") of precipitation.Sea temperature
In Two Rocks, in September, the average water temperature is 19.3°C (66.7°F).Note: A surface water temperature of 19.3°C (66.7°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
In September, the average length of the day is 11h and 54min.On the first day of September, sunrise is at 6:33 am and sunset at 6:01 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 6:18 pm AWST.
Sunshine
In Two Rocks, the average sunshine in September is 8.3h.UV index
In Two Rocks, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Adopt protective measures - It is advised to guard against sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Two Rocks, Australia
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are January and February (28.8°C).
The month with the lowest average high temperature is July (17.2°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is February (19.8°C).
The coldest months (with the lowest average low temperature) are August and September (11.2°C).
Average pressure in September
Two Rocks, Australia
- Average pressure in September: 1019.1mbar
The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is January (1011.2mbar).
Average wind speed in September
Two Rocks, Australia
- Average wind speed in September: 15.5km/h
The windiest month (with the highest average wind speed) is January (17.3km/h).
The calmest month (with the lowest average wind speed) is April (14.1km/h).
Average humidity in September
Two Rocks, Australia
- Average humidity in September: 71%
The months with the highest relative humidity are July and August (73%).
The month with the lowest relative humidity is January (56%).
Average rainfall in September
Two Rocks, Australia
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is June (69mm).
The driest months (with the least rainfall) are March and December (11mm).
Average rainfall days in September
Two Rocks, Australia
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (5.2 days).
Average sea temperature in September
Two Rocks, Australia
- Average sea temperature in September: 19.3°C
The best month for swimming (with the highest average sea temperature) is March (23.7°C).
The coldest month (with the lowest average sea temperature) is October (19.1°C).
Average daylight in September /
Average sunshine in September
Two Rocks, Australia
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is January (Average sunshine: 11h and 36min).
The month with the least sunshine is July (Average sunshine: 5h and 54min).
Average sunshine days in September
Two Rocks, Australia
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in September
Two Rocks, Australia
- Average UV index in September: 5
The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 4).
Average cloud cover in September
Two Rocks, Australia
- Average cloud cover in September: 31
The month with the most cloud cover is July (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in September
Two Rocks, 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).
