Month-specific sea-surface temperature · Greece

Rhodes Sea Temperature in April

18.3°C

64.9°F

In April, sea-surface temperature near Rhodes has a historical monthly average of 18.3°C. This is not the reading for any particular holiday date.

Across 2022–2025, the lowest and highest yearly April monthly means were 17.5–19.5°C. These are not daily extremes.

Previous month

March · 17.6°C

Change into April: +0.7°C

Next month

May · 20.3°C

Change into next month: +2.0°C

Can you swim or snorkel in Rhodes in April?

At 18.3°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.

Rhodes is in the Dodecanese. Anthony Quinn Bay and other rocky coves can feel different from open coast even when the island water temperature is similar. Check the beach forecast for wind and waves; temperature is not a snorkel-safety score.

Check the current waves, wind and snorkeling forecast →

A live forecast does not predict a future April. Check again close to your trip.

Rhodes Sea Temperature: All 12 Months

Choose a month for available historical evidence, month comparisons and swim guidance. Missing history is clearly marked and never presented as a long-term normal.

January 19.4°C February 18.1°C March 17.6°C April 18.3°C May 20.3°C June 24.6°C July 27.7°C August 28.7°C September 27.6°C October 25.6°C November 23.2°C December 20.7°C

Data source and limitations

Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2022–2025. Marine model grid near 36.17, 28.00. Based on 3 yearly monthly means and 2160 recorded samples. Source methodology.

Modelled sea-surface temperatures do not establish underwater visibility, wildlife, calm currents or safe entry.