Croatia
Istria · Adriatic Sea

Hawaii Beach Water Temperature & Swim Forecast

Sheltered pine-backed Istrian swim bay.

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Sea temperature now
Source: Open-Meteo Marine
Air temperature
Wave height
Wind
UV index

Location

Hawaii 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.

Wetsuit recommendation

Check live temperature

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Surf & watersports
Once the live reading appears we'll calculate the ideal wetsuit thickness for this beach.

Recommendation tuned for Hawaii Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.

Hawaii Beach swimming conditions summary

Water temperature
Water feels
Swimmable today
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Swim conditions score
Wetsuit needed
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Air temperature
Waves
Wind
UV index
Warmest months to swim
June, July, August

Live water temperature is loading — refresh in a moment for a precise recommendation. Live marine data updated hourly from Open-Meteo Marine.

Frequently asked questions

Can I swim at Hawaii Beach right now?

Live data is loading. Use the 7-day forecast above to plan your swim — conditions above 22°C are comfortable for most swimmers.

What will the sea temperature be at Hawaii Beach next week?

Based on long-term August averages and the latest marine model, expect the sea around Hawaii Beach to sit close to 26.0°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 Hawaii Beach?

June – July – August are typically the warmest months to swim at Hawaii Beach, with sea temperatures at their seasonal peak.

Quick answer

Can I swim at Hawaii Beach today?

Live data is loading. In summer, this beach typically offers comfortable swimming conditions.

Key takeaways
  • • Located in Istria, 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.

12°C26°C· Current month outlined· “Best” = within 2°C of the annual peak

Best time to swim in Hawaii Beach

The sea in Hawaii 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.

Hawaii Beach sea temperature history

Long-term climatology for Hawaii 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 Hawaii 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.

Jan
13°C
Feb
12°C
Mar
13°C
Apr
15°C
May
19°C
Jun
23°C
Jul
25°C
Aug
26°C
Sep
23°C
Oct
20°C
Nov
17°C
Dec
14°C

Hawaii Beach sea temperature: frequently asked questions

What is the warmest month to swim in Hawaii Beach?

August is the warmest month in Hawaii Beach, when the sea averages about 26°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Hawaii Beach?

The coldest month in Hawaii Beach is typically February, when the water averages around 12°C. Cold-water swimmers and surfers dominate this period.

When can you swim in Hawaii Beach without a wetsuit?

The main swimming season in Hawaii 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 Hawaii Beach?

Outside peak summer the water in Hawaii 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 Hawaii Beach?

The long-term annual mean sea temperature in Hawaii Beach is about 18°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Hawaii Beach?

The live reading at the top of this page shows the current sea temperature in Hawaii 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

MonthSeaComfort
Jan13°CCold
Feb12°CCold
Mar13°CCold
Apr15°CBracing
May19°CPleasant
Jun23°CWarm
Jul25°CWarm
Aug26°CHot
Sep23°CWarm
Oct20°CPleasant
Nov17°CBracing
Dec14°CBracing

Nearby beaches

The closest coastline, with live water temperatures.