Vis Water Temperature
Updated Tue 14:53 (Europe/Zagreb)
Croatia · Forecast updated Sep 22, 2026, 14:53 UTC
Current Sea Temperature
25.0°C
77.0°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
0.4°C above
The typical September average is 24.6°C (76.3°F) from the historical baseline.
Recent trend
Cooling by 1.5°C
Seven-day average: 25.6°C, versus 27.1°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 Vis, typical monthly averages range from about 15.1°C (59.2°F) in February to 25.9°C (78.6°F) in August.
Over the past 30 days, the average sea temperature in Vis has been 27.2°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Vis, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 15.5–16.4°C | 15.9°C / 60.6°F |
| February | 14.8–15.3°C | 15.1°C / 59.2°F |
| March | 14.9–15.5°C | 15.1°C / 59.2°F |
| April | 15.6–16.4°C | 16.1°C / 61.0°F |
| May | 18.1–19.1°C | 18.6°C / 65.5°F |
| June | 22.9–23.2°C | 23.1°C / 73.6°F |
| July | 25.1–26.2°C | 25.7°C / 78.3°F |
| August | 25.1–26.7°C | 25.9°C / 78.6°F |
| September | 24.3–24.9°C | 24.6°C / 76.3°F |
| October | 20.5–23.0°C | 21.8°C / 71.2°F |
| November | 18.2–20.4°C | 19.5°C / 67.1°F |
| December | 16.8–17.4°C | 17.1°C / 62.8°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (43.04, 16.21). 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.
Vis in January
Typical January water temperature near Vis is 15.9°C (60.6°F), with yearly monthly means from 15.5–16.4°C.
Vis in February
Typical February water temperature near Vis is 15.1°C (59.2°F), with yearly monthly means from 14.8–15.3°C.
Vis in March
Typical March water temperature near Vis is 15.1°C (59.2°F), with yearly monthly means from 14.9–15.5°C.
Vis in April
Typical April water temperature near Vis is 16.1°C (61.0°F), with yearly monthly means from 15.6–16.4°C.
Vis in May
Typical May water temperature near Vis is 18.6°C (65.5°F), with yearly monthly means from 18.1–19.1°C.
Vis in June
Typical June water temperature near Vis is 23.1°C (73.6°F), with yearly monthly means from 22.9–23.2°C.
Vis in July
Typical July water temperature near Vis is 25.7°C (78.3°F), with yearly monthly means from 25.1–26.2°C.
Vis in August
Typical August water temperature near Vis is 25.9°C (78.6°F), with yearly monthly means from 25.1–26.7°C.
Vis in September
Typical September water temperature near Vis is 24.6°C (76.3°F), with yearly monthly means from 24.3–24.9°C.
Vis in October
Typical October water temperature near Vis is 21.8°C (71.2°F), with yearly monthly means from 20.5–23.0°C.
Vis in November
Typical November water temperature near Vis is 19.5°C (67.1°F), with yearly monthly means from 18.2–20.4°C.
Vis in December
Typical December water temperature near Vis is 17.1°C (62.8°F), with yearly monthly means from 16.8–17.4°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 | 21.1°C / 70.0°F | 24.0°C / 75.3°F | 28.1°C / 82.6°F |
| July | 24.8°C / 76.6°F | 26.6°C / 79.8°F | 28.7°C / 83.7°F |
| August | 26.2°C / 79.2°F | 27.9°C / 82.3°F | 29.0°C / 84.2°F |
| September | 24.2°C / 75.6°F | 26.7°C / 80.0°F | 28.4°C / 83.1°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 Vis
Remote Adriatic island with the Blue Cave nearby and exceptionally clear coves.
- Area
- Split-Dalmatia
Vis Water Temperature: Common Questions
What is the water temperature in Vis today?
The current sea surface temperature near Vis is 25.0°C (77.0°F). Over the last 30 days, the average has been 27.2°C.
When is the water warmest in Vis?
The water is typically warmest in August, at around 25.9°C (78.6°F) in the 2023–2025 historical baseline.
When is the water coldest in Vis?
The water is typically coldest in February, at around 15.1°C (59.2°F) in the same historical baseline. A wetsuit is usually recommended during this period.
Can you swim in Vis 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 Vis.
View Snorkel Forecast →