Rovinj Water Temperature
Updated Tue 14:53 (Europe/Zagreb)
Croatia · Forecast updated Sep 22, 2026, 14:53 UTC · refresh delayed
Current Sea Temperature
25.4°C
77.7°F
Warm water
Valid Sep 22, 2026, 14:53 (Europe/Zagreb). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
0.9°C above
The typical September average is 24.5°C (76.1°F) from the historical baseline.
Recent trend
Cooling by 1.0°C
Seven-day average: 25.8°C, versus 26.8°C in the prior seven days.
What to wear
Warm water
Most people are comfortable in swimwear or a light rash guard.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions or replace the snorkel forecast.
Typical Sea Temperature Over the Year
In the historical baseline for Rovinj, typical monthly averages range from about 12.0°C (53.6°F) in February to 26.5°C (79.7°F) in July.
Over the past 30 days, the average sea temperature in Rovinj has been 27.1°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Rovinj, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 11.8–13.5°C | 12.9°C / 55.2°F |
| February | 11.5–12.5°C | 12.0°C / 53.6°F |
| March | 11.6–13.1°C | 12.2°C / 54.0°F |
| April | 13.6–15.3°C | 14.3°C / 57.7°F |
| May | 17.2–18.5°C | 18.0°C / 64.4°F |
| June | 22.5–23.7°C | 23.2°C / 73.8°F |
| July | 26.0–27.2°C | 26.5°C / 79.7°F |
| August | 25.5–27.9°C | 26.5°C / 79.7°F |
| September | 24.1–24.9°C | 24.5°C / 76.1°F |
| October | 20.5–21.9°C | 21.0°C / 69.8°F |
| November | 17.4–18.2°C | 17.9°C / 64.2°F |
| December | 14.2–15.0°C | 14.6°C / 58.3°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (45.04, 13.63). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
Water temperature by month
Each month uses the 2023–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Rovinj in January
Typical January water temperature near Rovinj is 12.9°C (55.2°F), with yearly monthly means from 11.8–13.5°C.
Rovinj in February
Typical February water temperature near Rovinj is 12.0°C (53.6°F), with yearly monthly means from 11.5–12.5°C.
Rovinj in March
Typical March water temperature near Rovinj is 12.2°C (54.0°F), with yearly monthly means from 11.6–13.1°C.
Rovinj in April
Typical April water temperature near Rovinj is 14.3°C (57.7°F), with yearly monthly means from 13.6–15.3°C.
Rovinj in May
Typical May water temperature near Rovinj is 18.0°C (64.4°F), with yearly monthly means from 17.2–18.5°C.
Rovinj in June
Typical June water temperature near Rovinj is 23.2°C (73.8°F), with yearly monthly means from 22.5–23.7°C.
Rovinj in July
Typical July water temperature near Rovinj is 26.5°C (79.7°F), with yearly monthly means from 26.0–27.2°C.
Rovinj in August
Typical August water temperature near Rovinj is 26.5°C (79.7°F), with yearly monthly means from 25.5–27.9°C.
Rovinj in September
Typical September water temperature near Rovinj is 24.5°C (76.1°F), with yearly monthly means from 24.1–24.9°C.
Rovinj in October
Typical October water temperature near Rovinj is 21.0°C (69.8°F), with yearly monthly means from 20.5–21.9°C.
Rovinj in November
Typical November water temperature near Rovinj is 17.9°C (64.2°F), with yearly monthly means from 17.4–18.2°C.
Rovinj in December
Typical December water temperature near Rovinj is 14.6°C (58.3°F), with yearly monthly means from 14.2–15.0°C.
Forecast archive (growing)
These values come from hourly forecasts SnorkelForecast has stored. They cover only months with records and do not replace the historical baseline.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 21.5°C / 70.7°F | 24.4°C / 75.8°F | 28.0°C / 82.4°F |
| July | 24.7°C / 76.5°F | 26.7°C / 80.1°F | 28.9°C / 84.0°F |
| August | 27.2°C / 81.0°F | 28.2°C / 82.7°F | 29.3°C / 84.7°F |
| September | 24.6°C / 76.3°F | 26.6°C / 79.9°F | 28.2°C / 82.8°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2735 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Rovinj
Istrian town with rocky coves and clear northern Adriatic water.
- Area
- Istria
Rovinj Water Temperature: Common Questions
What is the water temperature in Rovinj today?
The current sea surface temperature near Rovinj is 25.4°C (77.7°F). Over the last 30 days, the average has been 27.1°C.
When is the water warmest in Rovinj?
The water is typically warmest in July, at around 26.5°C (79.7°F) in the 2023–2025 historical baseline.
When is the water coldest in Rovinj?
The water is typically coldest in February, at around 12.0°C (53.6°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Rovinj today?
At 25.4°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Rovinj.
View Snorkel Forecast →