# Koh Kradan water temperature Sea temperature at Koh Kradan is 30.5 °C (86.9 °F). - Location: Koh Kradan, Thailand - Timezone: Asia/Bangkok - Source: Open-Meteo marine forecast (snapshot) - Generated at: 2026-09-22T18:56:38.068364+07:00 - Forecast page: https://snorkelforecast.com/thailand/koh-kradan/ - HTML sea temperature: https://snorkelforecast.com/thailand/koh-kradan/sea-temperature/ - Temperature is not a safety rating or snorkel score. - Guidance: Very warm water - What to wear: Swimwear is usually enough; a rash guard adds sun protection. ## Monthly baseline - January: 28.9 °C (84.0 °F) - February: 29.2 °C (84.6 °F) - March: 30.0 °C (86.0 °F) - April: 31.0 °C (87.8 °F) - May: 31.2 °C (88.2 °F) - June: 30.7 °C (87.3 °F) - July: 30.5 °C (86.9 °F) - August: 30.5 °C (86.9 °F) - September: 29.9 °C (85.8 °F) - October: 30.0 °C (86.0 °F) - November: 29.7 °C (85.5 °F) - December: 29.2 °C (84.6 °F)