What is the hottest month in Santorini?

July and August tie for the hottest months, both averaging 29 degrees C (85 degrees F). August typically feels slightly hotter because the Meltemi wind can be less consistent, and accumulated summer heat raises sea and land temperatures to their annual peak.

Does it rain in Santorini in summer?

Virtually never. From June through September, Santorini averages fewer than 1-2 rain days total across those four months combined. You can leave the umbrella at home if visiting between May and October.

Is Santorini too windy in July?

The Meltemi wind is a real factor in Santorini weather during July and August, with gusts reaching 50+ km/h on strong days. It can delay boat trips and make exposed areas uncomfortable. However, many visitors appreciate the wind for keeping temperatures bearable. South-facing beaches are sheltered, and the wind usually calms by evening.

When is the sea warm enough to swim in Santorini?

The comfortable swimming season runs from June through October, with Santorini sea temperature ranging from 22-25 degrees C. September often has the best swimming conditions: warm water (24 degrees C), fewer crowds at beaches, and the Meltemi has subsided. May and November are borderline at around 19 degrees C.

What is the best month to visit Santorini for the first time?

For [first-time visitors](/discover/first-time-santorini-tips), September or May offers the ideal introduction: warm Santorini weather, manageable crowds, everything open, and prices below peak summer. September edges ahead slightly thanks to warmer seas and softer light. Read our full [best time to visit Santorini guide](/discover/best-time-to-visit-santorini) for a deeper comparison.

What should I pack for Santorini in October?

Light layers are key. Santorini weather in October still hits 23 degrees C during the day, so t-shirts and light trousers work fine. Bring a jacket for evenings and a rain layer just in case. Comfortable walking shoes are a must for cobblestone streets. Don't forget swimwear - the sea is still 22 degrees C. See our [3-day Santorini itinerary](/discover/santorini-itinerary-3-days) for a packing-friendly trip plan. --- This guide is part of our [Ultimate Santorini Travel Guide](/discover/santorini

Rocky caldera cliffs of Santorini under dramatic clouds with the Aegean Sea below

Travel Guide

Santorini Weather: Month-by-Month Climate Guide

Last updated: March 2026

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Santorini Weather: Month-by-Month Climate Guide | Aroma Suites