# Dugi Otok water temperature Sea temperature at Dugi Otok is 24.8 °C (76.6 °F). - Location: Dugi Otok, Croatia - Timezone: Europe/Zagreb - Source: Open-Meteo marine forecast (snapshot) - Generated at: 2026-09-22T16:55:26.391733+02:00 - Forecast page: https://snorkelforecast.com/croatia/dugi-otok/ - HTML sea temperature: https://snorkelforecast.com/croatia/dugi-otok/sea-temperature/ - Temperature is not a safety rating or snorkel score. - Guidance: Mild water - What to wear: A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit. ## Monthly baseline - January: 14.9 °C (58.8 °F) - February: 14.3 °C (57.7 °F) - March: 14.3 °C (57.7 °F) - April: 15.5 °C (59.9 °F) - May: 18.4 °C (65.1 °F) - June: 22.9 °C (73.2 °F) - July: 26.1 °C (79.0 °F) - August: 25.8 °C (78.4 °F) - September: 24.0 °C (75.2 °F) - October: 21.6 °C (70.9 °F) - November: 19.1 °C (66.4 °F) - December: 16.6 °C (61.9 °F)