Sea temperature - Greece: month by month

Average sea temperature each month - a rough guide to when it's worth going. Current month highlighted.

MonthAverageWarmest
January 17.4°C Kos 19.3°C
February 16.6°C Kos 18.1°C
March 16.6°C Kos 17.7°C
April 17.4°C Rhodes 18.3°C
May 19.5°C Rhodes 20.1°C
June 23.8°C Halkidiki 24.5°C
July 26.3°C Halkidiki 27.4°C
August 26.9°C Rhodes 28.1°C
September 25.9°C Rhodes 27.0°C
October 23.5°C Rhodes 24.8°C
November 21.2°C Rhodes 22.7°C
December 18.8°C Rhodes 20.6°C

Frequently asked questions

In which month is the sea warmest?

Warmest: August, about 26.9°C on average.

When is the sea coldest?

Coldest: February, about 16.6°C on average.

What is the sea temperature in summer?

In summer (June-August) about 25.7°C on average.

In which months is the sea warmest?

The sea usually exceeds 24°C from July to September.

Sea temperature - Greece, January

Average (January): about 17.4°C. Warmest: Kos (19.3°C).

Sea temperature - Greece, February

Average (February): about 16.6°C. Warmest: Kos (18.1°C).

Sea temperature - Greece, March

Average (March): about 16.6°C. Warmest: Kos (17.7°C).

Sea temperature - Greece, April

Average (April): about 17.4°C. Warmest: Rhodes (18.3°C).

Sea temperature - Greece, May

Average (May): about 19.5°C. Warmest: Rhodes (20.1°C).

Sea temperature - Greece, June

Average (June): about 23.8°C. Warmest: Halkidiki (24.5°C).

Sea temperature - Greece, July

Average (July): about 26.3°C. Warmest: Halkidiki (27.4°C).

Sea temperature - Greece, August

Average (August): about 26.9°C. Warmest: Rhodes (28.1°C).

Sea temperature - Greece, September

Average (September): about 25.9°C. Warmest: Rhodes (27.0°C).

Sea temperature - Greece, October

Average (October): about 23.5°C. Warmest: Rhodes (24.8°C).

Sea temperature - Greece, November

Average (November): about 21.2°C. Warmest: Rhodes (22.7°C).

Sea temperature - Greece, December

Average (December): about 18.8°C. Warmest: Rhodes (20.6°C).