Korčula Water Temperature
Updated Tue 14:55 (Europe/Zagreb)
Croatia · Forecast updated Sep 22, 2026, 14:55 UTC
Current Sea Temperature
25.8°C
78.4°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
0.8°C above
The typical September average is 25.0°C (77.0°F) from the historical baseline.
Recent trend
Cooling by 0.8°C
Seven-day average: 26.6°C, versus 27.4°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 Korčula, typical monthly averages range from about 15.0°C (59.0°F) in March to 26.1°C (79.0°F) in August.
Over the past 30 days, the average sea temperature in Korčula has been 27.7°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Korčula, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 15.1–16.4°C | 15.7°C / 60.3°F |
| February | 14.7–15.5°C | 15.1°C / 59.2°F |
| March | 14.6–15.4°C | 15.0°C / 59.0°F |
| April | 15.3–16.9°C | 16.1°C / 61.0°F |
| May | 18.5–19.4°C | 19.0°C / 66.2°F |
| June | 23.0–24.0°C | 23.5°C / 74.3°F |
| July | 25.0–26.4°C | 25.8°C / 78.4°F |
| August | 25.4–26.6°C | 26.1°C / 79.0°F |
| September | 24.5–25.7°C | 25.0°C / 77.0°F |
| October | 20.8–23.1°C | 22.1°C / 71.8°F |
| November | 18.5–20.6°C | 19.6°C / 67.3°F |
| December | 16.7–17.4°C | 17.1°C / 62.8°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (42.96, 17.13). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
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.
Korčula in January
Typical January water temperature near Korčula is 15.7°C (60.3°F), with yearly monthly means from 15.1–16.4°C.
Korčula in February
Typical February water temperature near Korčula is 15.1°C (59.2°F), with yearly monthly means from 14.7–15.5°C.
Korčula in March
Typical March water temperature near Korčula is 15.0°C (59.0°F), with yearly monthly means from 14.6–15.4°C.
Korčula in April
Typical April water temperature near Korčula is 16.1°C (61.0°F), with yearly monthly means from 15.3–16.9°C.
Korčula in May
Typical May water temperature near Korčula is 19.0°C (66.2°F), with yearly monthly means from 18.5–19.4°C.
Korčula in June
Typical June water temperature near Korčula is 23.5°C (74.3°F), with yearly monthly means from 23.0–24.0°C.
Korčula in July
Typical July water temperature near Korčula is 25.8°C (78.4°F), with yearly monthly means from 25.0–26.4°C.
Korčula in August
Typical August water temperature near Korčula is 26.1°C (79.0°F), with yearly monthly means from 25.4–26.6°C.
Korčula in September
Typical September water temperature near Korčula is 25.0°C (77.0°F), with yearly monthly means from 24.5–25.7°C.
Korčula in October
Typical October water temperature near Korčula is 22.1°C (71.8°F), with yearly monthly means from 20.8–23.1°C.
Korčula in November
Typical November water temperature near Korčula is 19.6°C (67.3°F), with yearly monthly means from 18.5–20.6°C.
Korčula in December
Typical December water temperature near Korčula is 17.1°C (62.8°F), with yearly monthly means from 16.7–17.4°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 | 21.4°C / 70.5°F | 24.3°C / 75.8°F | 27.8°C / 82.0°F |
| July | 24.8°C / 76.6°F | 26.3°C / 79.3°F | 28.3°C / 82.9°F |
| August | 25.9°C / 78.6°F | 27.6°C / 81.7°F | 29.1°C / 84.4°F |
| September | 25.1°C / 77.2°F | 27.2°C / 80.9°F | 29.0°C / 84.2°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 Korčula
Wooded Adriatic island with pebbly coves and clear, calm water.
- Area
- Dubrovnik-Neretva
Korčula Water Temperature: Common Questions
What is the water temperature in Korčula today?
The current sea surface temperature near Korčula is 25.8°C (78.4°F). Over the last 30 days, the average has been 27.7°C.
When is the water warmest in Korčula?
The water is typically warmest in August, at around 26.1°C (79.0°F) in the 2023–2025 historical baseline.
When is the water coldest in Korčula?
The water is typically coldest in March, at around 15.0°C (59.0°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Korčula today?
At 25.8°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 Korčula.
View Snorkel Forecast →