# Marmaris water temperature Sea temperature at Marmaris is 27.8 °C (82.0 °F). - Location: Marmaris, Turkey - Timezone: Europe/Istanbul - Source: Open-Meteo marine forecast (snapshot) - Generated at: 2026-09-22T14:19:43.521505+03:00 - Forecast page: https://snorkelforecast.com/turkey/marmaris/ - HTML sea temperature: https://snorkelforecast.com/turkey/marmaris/sea-temperature/ - Temperature is not a safety rating or snorkel score. - Guidance: Warm water - What to wear: Most people are comfortable in swimwear or a light rash guard. ## Monthly baseline - January: 19.5 °C (67.1 °F) - February: 18.1 °C (64.6 °F) - March: 17.9 °C (64.2 °F) - April: 18.5 °C (65.3 °F) - May: 20.3 °C (68.5 °F) - June: 24.7 °C (76.5 °F) - July: 27.7 °C (81.9 °F) - August: 28.6 °C (83.5 °F) - September: 27.4 °C (81.3 °F) - October: 25.3 °C (77.5 °F) - November: 23.3 °C (73.9 °F) - December: 20.9 °C (69.6 °F)