May weather forecastDee Why, Australia
May
Weather in May
Sea temperature
In May, the average sea temperature in Dee Why, Australia, is 20.8°C (69.4°F).Note: Swimming in water of 20.8°C (69.4°F) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in May in Dee Why is 10h and 23min.On the first day of the month, sunrise is at 6:29 am and sunset at 5:14 pm. On the last day of May, sunrise is at 6:50 am and sunset at 4:54 pm AEST.
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Dee Why, Australia, the average seawater temperature in May is 20.8°C (69.4°F). For swimming, a surface water temperature of 20.8°C (69.4°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).
In May, the average day length in Dee Why, Australia, is 10h and 23min.
On the first day of May in Dee Why, sunrise is at 6:29 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:54 pm AEST.
Average sea temperature in May
Dee Why, Australia
- Average sea temperature in May: 20.8°C
The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).
Average daylight in May
Dee Why, Australia
- Average daylight in May: 10h and 24min
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).





