September weather forecastJannali, Australia
September
Weather in September
The first month of the spring, September, is a pleasant month in Jannali, Australia, with an average temperature ranging between max 20.3°C (68.5°F) and min 12.6°C (54.7°F).Temperature
Jannali observes an average high-temperature of an agreeable 20.3°C (68.5°F) in September, barely different from 17.7°C (63.9°F) in August. An average temperature of 12.6°C (54.7°F) is recorded during the nights in September.Humidity
In September, the average relative humidity is 66%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.4 days and typically collects 17mm (0.67") of precipitation.Sea temperature
The month with the coldest seawater in Jannali is September, with an average sea temperature of 18.4°C (65.1°F).Note: For most individuals, swimming in 18.4°C (65.1°F) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 21°C (69.8°F).
Daylight
The average length of the day in September in Jannali is 11h and 53min.On the first day of the month, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of September, in Jannali, Australia, sunrise is at 5:33 am and sunset at 5:57 pm AEST.
Sunshine
The average sunshine in September in Jannali is 8.8h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index in Jannali. A UV Index estimate of 3 to 5 represents a medium health hazard 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:
Ensure safety - Sun damage prevention is strongly urged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jannali, Australia
- Average high temperature in September: 20.3°C
The warmest month (with the highest average high temperature) is January (26.9°C).
The month with the lowest average high temperature is July (16.6°C).
- Average low temperature in September: 12.6°C
The months with the highest average low temperature are January and February (20.1°C).
The coldest month (with the lowest average low temperature) is July (10.1°C).
Average pressure in September
Jannali, Australia
- Average pressure in September: 1017.1mbar
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
Jannali, Australia
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is August (15.8km/h).
The calmest month (with the lowest average wind speed) is April (13.5km/h).
Average humidity in September
Jannali, Australia
- Average humidity in September: 66%
The month with the highest relative humidity is February (75%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Jannali, Australia
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is March (43mm).
The driest month (with the least rainfall) is September (17mm).
Average rainfall days in September
Jannali, Australia
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (9.2 days).
Average sea temperature in September
Jannali, 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
Jannali, 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 48min
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
Jannali, Australia
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (17.6 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in September
Jannali, 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
Jannali, Australia
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Jannali, 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).
