September weather forecastCowes, Australia
September
Weather in September
The first month of the spring, September, is still a refreshing month in Cowes, Australia, with an average temperature fluctuating between 9.4°C (48.9°F) and 15.4°C (59.7°F).Temperature
The transition into September notes an average high-temperature of a still moderate 15.4°C (59.7°F), revealing a mild distinction from the 13.4°C (56.1°F) in August. In Cowes, an average nighttime temperature of 9.4°C (48.9°F) is expected during September.Humidity
The average relative humidity in September is 74%.Rainfall
In Cowes, Australia, in September, during 17.3 rainfall days, 52mm (2.05") of precipitation is typically accumulated. In Cowes, during the entire year, the rain falls for 177.5 days and collects up to 562mm (22.13") of precipitation.Sea temperature
In September, the average sea temperature is 13.8°C (56.8°F).Note: Swimming in 13.8°C (56.8°F) at temperatures under 10°C (50°F) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 13°C (55.4°F) feels frosty.
Daylight
The average length of the day in September in Cowes is 11h and 50min.On the first day of the month, sunrise is at 6:40 am and sunset at 5:57 pm. On the last day of September, in Cowes, sunrise is at 5:55 am and sunset at 6:22 pm AEST.
Sunshine
In September, the average sunshine in Cowes is 7.2h.UV index
In Cowes, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 4 in September translates into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cowes, Australia
- Average high temperature in September: 15.4°C
The warmest months (with the highest average high temperature) are January and February (23.4°C).
The month with the lowest average high temperature is July (13°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is February (16.2°C).
The coldest months (with the lowest average low temperature) are July and August (8.6°C).
Average pressure in September
Cowes, Australia
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.6mbar).
Average wind speed in September
Cowes, Australia
- Average wind speed in September: 17.1km/h
The windiest months (with the highest average wind speed) are July and August (18.6km/h).
The calmest months (with the lowest average wind speed) are January, March and December (14km/h).
Average humidity in September
Cowes, Australia
- Average humidity in September: 74%
The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is January (68%).
Average rainfall in September
Cowes, Australia
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is May (59mm).
The driest month (with the least rainfall) is March (34mm).
Average rainfall days in September
Cowes, Australia
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is January (10.1 days).
Average sea temperature in September
Cowes, Australia
- Average sea temperature in September: 13.8°C
The best month for swimming (with the highest average sea temperature) is February (18.7°C).
The coldest month (with the lowest average sea temperature) is August (13.7°C).
Average daylight in September /
Average sunshine in September
Cowes, Australia
- Average daylight in September: 11h and 48min
The month with the longest days is December (Average daylight: 14h and 48min).
The month with the shortest days is June (Average daylight: 9h and 30min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is May (Average sunshine: 6h and 24min).
Average sunshine days in September
Cowes, Australia
- Average sunshine days in September: 9.9 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is August (9.4 days).
Average UV index in September
Cowes, Australia
- Average UV index in September: 4
The month with the highest UV index is December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 3).
Average cloud cover in September
Cowes, Australia
- Average cloud cover in September: 44
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in September
Cowes, 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).
