Rockley Beach — Sea temperature now
Wide central south-coast beach.
Very warm water with a light chop and a light breeze — great swimming conditions.
Location
Rockley Beach on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Monthly sea temperature averages
Typical year-round water temperature, based on regional climatology.
Best time to swim in Rockley Beach
The sea in Rockley Beach peaks in June, when the water averages around 28°C.
The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.
On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
The coldest month is typically January at around 26°C, when cold-water swimmers dominate the coast.
Rockley Beach sea temperature history
Long-term climatology for Rockley Beach shows an annual mean sea temperature of 27°C, ranging from 26°C in winter to 28°C at the summer peak.
The seasonal swing is roughly 2°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Rockley Beach, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Rockley Beach sea temperature: frequently asked questions
What is the warmest month to swim in Rockley Beach?
June is the warmest month in Rockley Beach, when the sea averages about 28°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Rockley Beach?
The coldest month in Rockley Beach is typically January, when the water averages around 26°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Rockley Beach without a wetsuit?
The main swimming season in Rockley Beach runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Rockley Beach?
Rockley Beach stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.
What is the average sea temperature in Rockley Beach?
The long-term annual mean sea temperature in Rockley Beach is about 27°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Rockley Beach?
The live reading at the top of this page shows the current sea temperature in Rockley Beach, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec
| Month | Sea | Comfort |
|---|---|---|
| Jan | 26°C | Hot |
| Feb | 26°C | Hot |
| Mar | 26°C | Hot |
| Apr | 27°C | Hot |
| May | 27°C | Hot |
| Jun ⭐ | 28°C | Hot |
| Jul | 28°C | Hot |
| Aug | 28°C | Hot |
| Sep | 28°C | Hot |
| Oct | 28°C | Hot |
| Nov | 28°C | Hot |
| Dec | 27°C | Hot |