May is a popular month to ask about Hillarys Beach because conditions can shift week to week along this coast. Expect the water near 20.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Indian Ocean.
Hillarys Beach sea temperature in May — averages 20.0°C
The sea at Hillarys Beach in Australia averages 20.0°C during May, based on long-run climatology for the Indian Ocean. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · May
20.0°C
warm · Good
Live water now
…
Recommended wetsuit
Shorty 2mm
At 20.0°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Monthly comparison
Yes — comfortable for most swimmers · Hillarys Beach
Can you swim at Hillarys Beach in June? — 19.0°C water19.0°CCan you swim at Hillarys Beach in July? — 18.0°C water18.0°CCan you swim at Hillarys Beach in August? — 18.0°C water18.0°CCan you swim at Hillarys Beach in September? — 19.0°C water19.0°CCan you swim at Hillarys Beach in October? — 20.0°C water20.0°CCan you swim at Hillarys Beach in November? — 21.0°C water21.0°C
Frequently asked questions
What is the average sea temperature at Hillarys Beach in May?
Hillarys Beach averages 20.0°C in May, based on long-run climatology for the Indian Ocean.
Is the sea warm enough to swim at Hillarys Beach in May?
Yes, most swimmers find 20.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Hillarys Beach in May?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.