Supetar Beach Water Temperature & Swim Forecast
Brac family beach.
Pleasant water with a light chop and a light breeze — great swimming conditions.
Model estimate · modelled, not a buoy measurement. How accurate is this?
Location
Supetar 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.
Rash vest or swimsuit
At 22.5°C most swimmers and surfers are comfortable in a swimsuit or thin rash top.
Recommendation tuned for Supetar Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Supetar Beach swimming conditions summary
- Water temperature
- 22.5°C
- Water feels
- Pleasant
- Swimmable today
- Yes — comfortable for most swimmers
- Swim conditions score
- 85/100 · Excellent
- Wetsuit needed
- Rash vest or swimsuit
- Air temperature
- —
- Waves
- —
- Wind
- —
- UV index
- —
- Average sea temperature (September)
- 23.0 °C
- Warmest months to swim
- June, July, August
At 22.5°C most swimmers and surfers are comfortable in a swimsuit or thin rash top. Model estimate. Water, wave, wind and UV values are Open-Meteo marine/weather model estimates, refreshed hourly — not buoy measurements.
Frequently asked questions
Can I swim at Supetar Beach right now?
The sea at Supetar Beach is currently 22.5°C — great swimming conditions. Most swimmers will find the water comfortable when it's above 22°C; below 18°C feels fresh and a wetsuit is recommended.
What will the sea temperature be at Supetar Beach next week?
Based on long-term September averages and the latest marine model, expect the sea around Supetar Beach to sit close to 20.9°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.
When is the best month to swim at Supetar Beach?
June – July – August are typically the warmest months to swim at Supetar Beach, with sea temperatures at their seasonal peak.
Do I need a wetsuit at Supetar Beach?
With water currently at 22.5°C: above 22°C no wetsuit needed; 18–22°C a shorty is comfortable for long swims; 14–18°C a 3/2mm full suit; below 14°C a 4/3mm or thicker.
Can I swim at Supetar Beach today?
The sea is currently 22.5°C — excellent swimming conditions. Most swimmers will find it pleasant.
- • Located in Brac, Croatia (Adriatic Sea).
- • Family friendly with calm, accessible water.
- • Live data refreshed hourly from Open-Meteo Marine.
Monthly sea temperature averages
Tap any month to see what to expect — based on regional climatology.
Best time to swim in Supetar Beach
The sea in Supetar Beach peaks in August, when the water averages around 26°C.
The main swimming season runs from June – October, when surface temperatures stay comfortable for extended sessions.
On average, 5 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like May and November are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 15°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically February at around 12°C, when cold-water swimmers dominate the coast.
Supetar Beach sea temperature history
Long-term climatology for Supetar Beach shows an annual mean sea temperature of 18°C, ranging from 12°C in winter to 26°C at the summer peak.
The seasonal swing is roughly 14°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 Supetar 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.
Supetar Beach sea temperature: frequently asked questions
What is the warmest month to swim in Supetar Beach?
August is the warmest month in Supetar Beach, when the sea averages about 26°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Supetar Beach?
The coldest month in Supetar Beach is typically February, when the water averages around 12°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Supetar Beach without a wetsuit?
The main swimming season in Supetar Beach runs from June – October — about 5 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 Supetar Beach?
Outside peak summer the water in Supetar Beach drops toward 15°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 Supetar Beach?
The long-term annual mean sea temperature in Supetar Beach is about 18°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Supetar Beach?
The live reading at the top of this page shows the current sea temperature in Supetar 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: Jun – Jul – Aug – Sep – Oct
| Month | Sea | Comfort |
|---|---|---|
| Jan | 13°C | Cold |
| Feb | 12°C | Cold |
| Mar | 13°C | Cold |
| Apr | 15°C | Bracing |
| May | 19°C | Pleasant |
| Jun | 23°C | Warm |
| Jul | 25°C | Warm |
| Aug ⭐ | 26°C | Hot |
| Sep | 23°C | Warm |
| Oct | 20°C | Pleasant |
| Nov | 17°C | Bracing |
| Dec | 14°C | Bracing |
Nearby beaches
The closest coastline, with live water temperatures.