Updated Tue 15:27 (Europe/Zagreb)
Croatia · Forecast updated Sep 22, 2026, 15:27 UTC
Current Sea Temperature
26.2°C
79.2°F
Warm water
Valid Sep 22, 2026, 15:27 (Europe/Zagreb). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.1°C above
The typical September average is 25.1°C (77.2°F) from the historical baseline.
Recent trend
Cooling by 0.9°C
Seven-day average: 26.8°C, versus 27.8°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.
In the historical baseline for Dubrovnik, typical monthly averages range from about 14.8°C (58.6°F) in February to 26.6°C (79.9°F) in August.
Over the past 30 days, the average sea temperature in Dubrovnik has been 28.0°C.
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Dubrovnik, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 15.6–16.1°C | 15.8°C / 60.4°F |
| February | 14.4–15.2°C | 14.8°C / 58.6°F |
| March | 14.6–15.7°C | 15.2°C / 59.4°F |
| April | 15.7–17.4°C | 16.5°C / 61.7°F |
| May | 18.8–19.9°C | 19.4°C / 66.9°F |
| June | 23.3–24.7°C | 24.0°C / 75.2°F |
| July | 25.6–27.2°C | 26.5°C / 79.7°F |
| August | 25.9–27.5°C | 26.6°C / 79.9°F |
| September | 24.5–25.7°C | 25.1°C / 77.2°F |
| October | 20.3–23.3°C | 21.9°C / 71.4°F |
| November | 18.8–20.7°C | 19.4°C / 66.9°F |
| December | 17.1–17.4°C | 17.3°C / 63.1°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (42.63, 18.13). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
Each month uses the 2023–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Typical January water temperature near Dubrovnik is 15.8°C (60.4°F), with yearly monthly means from 15.6–16.1°C.
Typical February water temperature near Dubrovnik is 14.8°C (58.6°F), with yearly monthly means from 14.4–15.2°C.
Typical March water temperature near Dubrovnik is 15.2°C (59.4°F), with yearly monthly means from 14.6–15.7°C.
Typical April water temperature near Dubrovnik is 16.5°C (61.7°F), with yearly monthly means from 15.7–17.4°C.
Typical May water temperature near Dubrovnik is 19.4°C (66.9°F), with yearly monthly means from 18.8–19.9°C.
Typical June water temperature near Dubrovnik is 24.0°C (75.2°F), with yearly monthly means from 23.3–24.7°C.
Typical July water temperature near Dubrovnik is 26.5°C (79.7°F), with yearly monthly means from 25.6–27.2°C.
Typical August water temperature near Dubrovnik is 26.6°C (79.9°F), with yearly monthly means from 25.9–27.5°C.
Typical September water temperature near Dubrovnik is 25.1°C (77.2°F), with yearly monthly means from 24.5–25.7°C.
Typical October water temperature near Dubrovnik is 21.9°C (71.4°F), with yearly monthly means from 20.3–23.3°C.
Typical November water temperature near Dubrovnik is 19.4°C (66.9°F), with yearly monthly means from 18.8–20.7°C.
Typical December water temperature near Dubrovnik is 17.3°C (63.1°F), with yearly monthly means from 17.1–17.4°C.
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 |
|---|---|---|---|
| January | 15.0°C / 59.0°F | 15.8°C / 60.5°F | 16.5°C / 61.7°F |
| February | 14.9°C / 58.8°F | 15.1°C / 59.2°F | 15.4°C / 59.7°F |
| March | 14.1°C / 57.4°F | 14.7°C / 58.5°F | 15.2°C / 59.4°F |
| April | 14.7°C / 58.5°F | 16.2°C / 61.2°F | 18.1°C / 64.6°F |
| May | 17.0°C / 62.6°F | 18.9°C / 66.0°F | 22.0°C / 71.6°F |
| June | 21.0°C / 69.8°F | 24.2°C / 75.6°F | 28.0°C / 82.4°F |
| July | 23.7°C / 74.7°F | 26.1°C / 79.0°F | 28.4°C / 83.1°F |
| August | 26.1°C / 79.0°F | 27.8°C / 82.0°F | 29.5°C / 85.1°F |
| September | 24.2°C / 75.6°F | 26.5°C / 79.6°F | 29.4°C / 84.9°F |
| October | 19.0°C / 66.2°F | 20.3°C / 68.5°F | 24.2°C / 75.6°F |
| November | 18.2°C / 64.8°F | 18.8°C / 65.9°F | 19.5°C / 67.1°F |
| December | 16.1°C / 61.0°F | 17.2°C / 63.0°F | 18.5°C / 65.3°F |
Profile calculated from 9049 hourly forecast records across 13 monthly periods. This is a growing archive, not a long-term climate normal.
Historic Adriatic coastal city
The current sea surface temperature near Dubrovnik is 26.2°C (79.2°F). Over the last 30 days, the average has been 28.0°C.
The water is typically warmest in August, at around 26.6°C (79.9°F) in the 2023–2025 historical baseline.
The water is typically coldest in February, at around 14.8°C (58.6°F) in the same historical baseline. A wetsuit is usually recommended during this period.
At 26.2°C, the water is usually comfortable for swimming and snorkeling.
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