Dugi Otok Water Temperature
Updated Tue 14:55 (Europe/Zagreb)
Croatia · Forecast updated Sep 22, 2026, 14:55 UTC · refresh delayed
Current Sea Temperature
25.0°C
77.0°F
Warm water
Valid Sep 22, 2026, 14:55 (Europe/Zagreb). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.0°C above
The typical September average is 24.0°C (75.2°F) from the historical baseline.
Recent trend
Cooling by 1.2°C
Seven-day average: 25.6°C, versus 26.7°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 Dugi Otok, typical monthly averages range from about 14.3°C (57.7°F) in February to 26.1°C (79.0°F) in July.
Over the past 30 days, the average sea temperature in Dugi Otok has been 26.9°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Dugi Otok, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 14.3–15.3°C | 14.9°C / 58.8°F |
| February | 14.2–14.3°C | 14.3°C / 57.7°F |
| March | 14.1–14.7°C | 14.3°C / 57.7°F |
| April | 15.1–15.8°C | 15.5°C / 59.9°F |
| May | 17.7–18.7°C | 18.4°C / 65.1°F |
| June | 22.2–23.4°C | 22.9°C / 73.2°F |
| July | 25.8–26.5°C | 26.1°C / 79.0°F |
| August | 24.9–26.5°C | 25.8°C / 78.4°F |
| September | 23.5–24.4°C | 24.0°C / 75.2°F |
| October | 20.7–22.5°C | 21.6°C / 70.9°F |
| November | 18.0–20.0°C | 19.1°C / 66.4°F |
| December | 16.3–16.9°C | 16.6°C / 61.9°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (43.88, 15.04). 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.
Dugi Otok in January
Typical January water temperature near Dugi Otok is 14.9°C (58.8°F), with yearly monthly means from 14.3–15.3°C.
Dugi Otok in February
Typical February water temperature near Dugi Otok is 14.3°C (57.7°F), with yearly monthly means from 14.2–14.3°C.
Dugi Otok in March
Typical March water temperature near Dugi Otok is 14.3°C (57.7°F), with yearly monthly means from 14.1–14.7°C.
Dugi Otok in April
Typical April water temperature near Dugi Otok is 15.5°C (59.9°F), with yearly monthly means from 15.1–15.8°C.
Dugi Otok in May
Typical May water temperature near Dugi Otok is 18.4°C (65.1°F), with yearly monthly means from 17.7–18.7°C.
Dugi Otok in June
Typical June water temperature near Dugi Otok is 22.9°C (73.2°F), with yearly monthly means from 22.2–23.4°C.
Dugi Otok in July
Typical July water temperature near Dugi Otok is 26.1°C (79.0°F), with yearly monthly means from 25.8–26.5°C.
Dugi Otok in August
Typical August water temperature near Dugi Otok is 25.8°C (78.4°F), with yearly monthly means from 24.9–26.5°C.
Dugi Otok in September
Typical September water temperature near Dugi Otok is 24.0°C (75.2°F), with yearly monthly means from 23.5–24.4°C.
Dugi Otok in October
Typical October water temperature near Dugi Otok is 21.6°C (70.9°F), with yearly monthly means from 20.7–22.5°C.
Dugi Otok in November
Typical November water temperature near Dugi Otok is 19.1°C (66.4°F), with yearly monthly means from 18.0–20.0°C.
Dugi Otok in December
Typical December water temperature near Dugi Otok is 16.6°C (61.9°F), with yearly monthly means from 16.3–16.9°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 | 20.8°C / 69.4°F | 24.1°C / 75.4°F | 28.1°C / 82.6°F |
| July | 25.7°C / 78.3°F | 26.9°C / 80.4°F | 28.6°C / 83.5°F |
| August | 26.8°C / 80.2°F | 27.8°C / 82.0°F | 29.0°C / 84.2°F |
| September | 24.5°C / 76.1°F | 26.5°C / 79.6°F | 28.1°C / 82.6°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 Dugi Otok
Island beside Kornati park with Telašćica's cliffs and clear bays.
- Area
- Zadar
Dugi Otok Water Temperature: Common Questions
What is the water temperature in Dugi Otok today?
The current sea surface temperature near Dugi Otok is 25.0°C (77.0°F). Over the last 30 days, the average has been 26.9°C.
When is the water warmest in Dugi Otok?
The water is typically warmest in July, at around 26.1°C (79.0°F) in the 2023–2025 historical baseline.
When is the water coldest in Dugi Otok?
The water is typically coldest in February, at around 14.3°C (57.7°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Dugi Otok today?
At 25.0°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 Dugi Otok.
View Snorkel Forecast →