# La Jolla Cove water temperature Sea temperature at La Jolla Cove is 23.5 °C (74.3 °F). - Location: La Jolla Cove, USA - Timezone: America/New_York - Source: Open-Meteo marine forecast (snapshot) - Generated at: 2026-09-24T03:13:11.288107-04:00 - Forecast page: https://snorkelforecast.com/usa/la-jolla-cove/ - HTML sea temperature: https://snorkelforecast.com/usa/la-jolla-cove/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: 15.0 °C (59.0 °F) - February: 14.7 °C (58.5 °F) - March: 15.0 °C (59.0 °F) - April: 15.8 °C (60.4 °F) - May: 17.7 °C (63.9 °F) - June: 19.2 °C (66.6 °F) - July: 21.2 °C (70.2 °F) - August: 21.7 °C (71.1 °F) - September: 21.4 °C (70.5 °F) - October: 18.9 °C (66.0 °F) - November: 17.4 °C (63.3 °F) - December: 16.5 °C (61.7 °F)