September weather forecastBonnet Bay, Australia
September
Weather in September
The first month of the spring, September, is a pleasant month in Bonnet Bay, Australia, with an average temperature varying between 10.6°C (51.1°F) and 21.5°C (70.7°F).Temperature
September introduces a marginal temperature uplift, with average high-temperatures adjusting from August's refreshing 18.3°C (64.9°F) to an agreeable 21.5°C (70.7°F). An average low-temperature of 10.6°C (51.1°F) is recorded during the nights in September.Humidity
September is the least humid month in Bonnet Bay, with an average relative humidity of 65%.Rainfall
May and September are months with the least rain in Bonnet Bay when the rain falls for 8.2 days and typically aggregates up to 26mm (1.02") of rain.Sea temperature
The month with the coldest seawater in Bonnet Bay is September, with an average sea temperature of 18.4°C (65.1°F).Note: In water with a temperature of 18.4°C (65.1°F), most individuals do not find swimming enjoyable. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), breathing control becomes more difficult.
Daylight
In September, the average length of the day in Bonnet Bay is 11h and 53min.On the first day of September, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 5:57 pm AEST.
Sunshine
In Bonnet Bay, the average sunshine in September is 8.6h.UV index
The months with the lowest UV index in Bonnet Bay are May through September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The Sun's radiation is especially intense around midday; try to stay in shade during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bonnet Bay, Australia
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is June (16.8°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (8°C).
Average pressure in September
Bonnet Bay, Australia
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Bonnet Bay, Australia
- Average wind speed in September: 10.2km/h
The windiest months (with the highest average wind speed) are January, September and December (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.8km/h).
Average humidity in September
Bonnet Bay, Australia
- Average humidity in September: 65%
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is September (65%).
Average rainfall in September
Bonnet Bay, Australia
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is February (83mm).
The driest months (with the least rainfall) are May and September (26mm).
Average rainfall days in September
Bonnet Bay, Australia
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is February (15.8 days).
The month with the least rainy days is August (7.3 days).
Average sea temperature in September
Bonnet Bay, Australia
- Average sea temperature in September: 18.4°C
The best month for swimming (with the highest average sea temperature) is February (23.8°C).
The coldest month (with the lowest average sea temperature) is September (18.4°C).
Average daylight in September /
Average sunshine in September
Bonnet Bay, Australia
- Average daylight in September: 11h and 54min
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 36min
The month with the most sunshine is November (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in September
Bonnet Bay, Australia
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is August (22.7 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Bonnet Bay, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February, November 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
Bonnet Bay, Australia
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Bonnet Bay, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
