September weather forecastForster, Australia
September
Weather in September
The first month of the spring, September, is a pleasant month in Forster, Australia, with temperature in the range of an average high of 21.4°C (70.5°F) and an average low of 11.8°C (53.2°F).Temperature
Forster's transition into September sees a mild rise in the average high-temperature, edging from a comfortable 18.4°C (65.1°F) in August to an agreeable 21.4°C (70.5°F). In the month of September, the average low-temperature in Forster usually rests at a fresh 11.8°C (53.2°F).Humidity
With an average relative humidity of 68%, September is the least humid month.Rainfall
September is the month with the least rainfall in Forster. Rain falls for 9.4 days and accumulates 27mm (1.06") of precipitation.Sea temperature
In September, the average sea temperature in Forster is 20.1°C (68.2°F).Note: For swimming, a surface water temperature of 20.1°C (68.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
Daylight
The average length of the day in September in Forster is 11h and 53min.On the first day of September, sunrise is at 6:06 am and sunset at 5:33 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 5:51 pm AEST.
Sunshine
In September, the average sunshine is 8.7h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during September leads to these advisories:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Forster, Australia
- Average high temperature in September: 21.4°C
The warmest month (with the highest average high temperature) is January (28.3°C).
The month with the lowest average high temperature is July (16.8°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is January (19.3°C).
The coldest month (with the lowest average low temperature) is July (8.9°C).
Average pressure in September
Forster, Australia
- Average pressure in September: 1017.5mbar
The months with the highest atmospheric pressure are June and July (1020.7mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Forster, Australia
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is December (11.2km/h).
The calmest month (with the lowest average wind speed) is April (8.9km/h).
Average humidity in September
Forster, Australia
- Average humidity in September: 68%
The months with the highest relative humidity are March and June (80%).
The month with the lowest relative humidity is September (68%).
Average rainfall in September
Forster, Australia
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is March (96mm).
The driest month (with the least rainfall) is September (27mm).
Average rainfall days in September
Forster, Australia
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (8.3 days).
Average sea temperature in September
Forster, Australia
- Average sea temperature in September: 20.1°C
The best month for swimming (with the highest average sea temperature) is February (25.3°C).
The coldest month (with the lowest average sea temperature) is July (19.7°C).
Average daylight in September /
Average sunshine in September
Forster, 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 42min
The month with the most sunshine is November (Average sunshine: 9h and 30min).
The month with the least sunshine is June (Average sunshine: 5h and 42min).
Average sunshine days in September
Forster, Australia
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is August (21.3 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Forster, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February 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
Forster, Australia
- Average cloud cover in September: 25
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Forster, Australia
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, October, November and December (9km).





