Butterfly Valley Beach — Sea temperature now
Cliff-hidden cove reached by boat.
Warm water with a light chop and a light breeze — great swimming conditions.
Location
Butterfly Valley 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 Butterfly Valley Beach
The sea in Butterfly Valley Beach peaks in August, when the water averages around 27°C.
The main swimming season runs from May – November, when surface temperatures stay comfortable for extended sessions.
On average, 7 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like April and December are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 18°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically January at around 16°C, when cold-water swimmers dominate the coast.
Butterfly Valley Beach sea temperature history
Long-term climatology for Butterfly Valley Beach shows an annual mean sea temperature of 21°C, ranging from 16°C in winter to 27°C at the summer peak.
The seasonal swing is roughly 11°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 Butterfly Valley 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.
Butterfly Valley Beach sea temperature: frequently asked questions
What is the warmest month to swim in Butterfly Valley Beach?
August is the warmest month in Butterfly Valley Beach, when the sea averages about 27°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Butterfly Valley Beach?
The coldest month in Butterfly Valley Beach is typically January, when the water averages around 16°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Butterfly Valley Beach without a wetsuit?
The main swimming season in Butterfly Valley Beach runs from May – November — about 7 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 Butterfly Valley Beach?
Outside peak summer the water in Butterfly Valley Beach drops toward 18°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Butterfly Valley Beach?
The long-term annual mean sea temperature in Butterfly Valley Beach is about 21°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Butterfly Valley Beach?
The live reading at the top of this page shows the current sea temperature in Butterfly Valley 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: May – Jun – Jul – Aug – Sep – Oct – Nov
| Month | Sea | Comfort |
|---|---|---|
| Jan | 16°C | Bracing |
| Feb | 16°C | Bracing |
| Mar | 16°C | Bracing |
| Apr | 17°C | Bracing |
| May | 20°C | Pleasant |
| Jun | 24°C | Warm |
| Jul | 26°C | Hot |
| Aug ⭐ | 27°C | Hot |
| Sep | 26°C | Hot |
| Oct | 23°C | Warm |
| Nov | 20°C | Pleasant |
| Dec | 18°C | Pleasant |