How warm is the sea in Istra?
The sea in Istra is currently 27°C.
Sea temperature is measured at the surface and updated hourly.
The sea in Istra is 27°C today, the weather is clear, 33°C.
Istra
Croatia
33°
Clear
Feels like 36°C
Last updated: 9 August 2026, 11:59
Outlook for the coming days
Today Istra can expect clear, with a high of around 33°. Over the coming days the weather stays similar, with temperatures between 23° and 38°. No significant rain is expected.
Sea and Beach
Sea temperature
27°
Waves
0.2 m
UV index
6
Hour by hour
Next 48 hours
- Now33°
- 12:0033°
- 13:0031°
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- 20:0029°
- 21:00
28° - 22:0027°
- 23:0026°
- 00:0026°
- 01:0026°
- 02:0026°
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- 06:0024°
- 07:0025°
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- 18:0031°
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- 20:0030°
- 21:0029°
- 22:00
28° - 23:0028°
- 00:0028°
- 01:0028°
- 02:0027°
- 03:0026°
- 04:0026°
- 05:0026°
- 06:0025°
- 07:0025°
- 08:0027°
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- 10:0033°
- 11:0036°
Daily forecast
- Today33°25°
- Tomorrow
33°24° - Tuesday
Веројатност за врнежи: 3%38°25° - Wednesday36°29°
- Thursday35°28°
- Friday35°24°
- Saturday35°23°
14 days
14 days
- Today33°25°
- Tomorrow33°24°
- TuesdayВеројатност за врнежи: 3%38°25°
- Wednesday36°29°
- Thursday35°28°
- Friday35°24°
- Saturday35°23°
- SundayВеројатност за врнежи: 12%33°22°
- MondayВеројатност за врнежи: 27%32°24°
- TuesdayВеројатност за врнежи: 49%32°26°
- Wednesday
Веројатност за врнежи: 34%31°23° - ThursdayВеројатност за врнежи: 22%29°22°
- FridayВеројатност за врнежи: 13%31°23°
- Saturday
Веројатност за врнежи: 24%31°23°
Tomorrow's weather
Tomorrow
10 August
Partly cloudy15 km/h
Weekend weather
Sunday
9 August
Clear15 km/h
Best Time to Visit
The best time to visit is from June to September. The sea is warmest in August (26.3°C).
| Month | Max | Min | Rain (days) | Sea |
|---|---|---|---|---|
| January | 10° | 5° | 9 | 13° |
| February | 11° | 6° | 10 | 12° |
| March | 13° | 8° | 9 | 13° |
| April | 17° | 11° | 9 | 15° |
| May | 21° | 15° | 12 | 18° |
| June | 26° | 20° | 7 | 22° |
| July | 29° | 22° | 6 | 26° |
| August | 29° | 23° | 6 | 26° |
| September | 24° | 18° | 10 | 24° |
| October | 20° | 14° | 11 | 20° |
| November | 15° | 10° | 13 | 18° |
| December | 12° | 7° | 11 | 15° |
About Istra
Istria is Croatia's largest peninsula, at the northwestern edge of the Adriatic, known for its Italian stamp, old coastal towns and the rocky greenery behind the shore. The peninsula combines Roman heritage in Pula, Venetian towns such as Rovinj and Poreč, and an interior known for truffles and vineyards. Its beaches are mostly rocky and pebbly, with clear sea. For Macedonian visitors Istria is more appealing for a longer excursion or a flight than for a classic driving holiday. Summers are warm and dry, with August sea temperatures of around 26°, and the season runs from June to mid-September.
What to See in Istra
- The Roman amphitheatre (Arena) in Pula
- The old town of Rovinj above the sea
- The Euphrasian Basilica in Poreč (UNESCO)
- The interior with truffles and vineyards
Frequently asked questions
When is the best time to visit Istra?
The best time to visit is from June to September. The sea is warmest in August (26.3°C).
Derived from the 2015–2024 climate averages.
Will it rain tomorrow in Istra?
Tomorrow in Istra expect partly cloudy, with a high of 33°C and a low of 24°C.
What will the weekend weather be like in Istra?
The weekend forecast for Istra: clear on Sunday (33°/25°).