Is September a good month to visit Greece?

Yes — peak season. Hot, dry, lively. Sea around 26°C — locals stay in for hours.

Can you swim in Greece in September?

Sea temperature averages 26.2°C — most visitors swim comfortably. Sea around 26°C — locals stay in for hours.

About 6 mm on the 1991-2020 baseline — dry.

Manageable — September is shoulder season in Greece. Most venues open without the high-summer queues. Sweet spot for many travellers.

Greece · September 2026

Peak heat in Greece — September averages a 28.8°C high. Almost no rain. Sea 26.2°C — bath-warm.

Avg high

28.8°C

Avg low

19°C

Rainfall

5.8 mm

Dry

Sun

0 h/day

Sea temp

26.2°C

Bath-warm

Light, breathable, sun-blocking. Linen shirts, swimwear under everything, hat and good sunglasses. Evenings rarely need more than a t-shirt.

Year-round spots plus seasonal venues whose own season covers September. Tap through for the editorial detail page.

Is September a good month to visit Greece?: Yes — peak season. Hot, dry, lively. Sea around 26°C — locals stay in for hours.
Can you swim in Greece in September?: Sea temperature averages 26.2°C — most visitors swim comfortably. Sea around 26°C — locals stay in for hours.
What's the average rainfall in Greece in September?: About 6 mm on the 1991-2020 baseline — dry.
Is September crowded in Greece?: Manageable — September is shoulder season in Greece. Most venues open without the high-summer queues. Sweet spot for many travellers.