Month-specific sea-surface temperature · Montenegro
Bay of Kotor Sea Temperature in May
20.0°C
68.0°F
In May, sea-surface temperature near Bay of Kotor has a historical monthly average of 20.0°C. This is not the reading for any particular holiday date.
Across 2022–2025, the lowest and highest yearly May monthly means were 19.4–20.8°C. These are not daily extremes.
Previous month
April · 16.6°C
Change into May: +3.4°C
Next month
June · 24.6°C
Change into next month: +4.6°C
Can you swim or snorkel in Bay of Kotor in May?
At 20.0°C our temperature-only guide describes the water as cool water. Comfort depends on your cold tolerance, immersion time and wind. A historical average cannot determine whether conditions are safe on any given day.
Do you need a wetsuit?
A 3 mm shorty or full wetsuit will make longer snorkels more comfortable.
Which beach should you choose?
Look for a beach sheltered from the actual forecast waves and wind on your visit. Exposure, currents and entry conditions vary even where water temperatures are similar. Follow local warnings.
The Bay of Kotor is a sheltered Adriatic bay. Its water can differ from the open coast, so use this page for the temperature trend and the forecast page for wind, waves and tide.
Check the current waves, wind and snorkeling forecast →
A live forecast does not predict a future May. Check again close to your trip.
Data source and limitations
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2022–2025. Marine model grid near 42.43, 18.68. Based on 3 yearly monthly means and 2232 recorded samples. Source methodology.
Modelled sea-surface temperatures do not establish underwater visibility, wildlife, calm currents or safe entry.