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Greece weather in June: temperatures, sea and rain
In June Athens averages 21–30°C, with about 1 rain days. The sea around Athens and the islands is around 22–23°C. Warmest place in the table: Athens (up to 30°C). Thessaloniki: 18–30°C.
Temperatures, sea and rain in June
| Place | Temp (min–max) | Sea | Rain days | Rain (mm) |
|---|---|---|---|---|
| Athens | 21–30° | 22° | 1 | 5 |
| Thessaloniki | 18–30° | — | 3 | 20 |
| Crete (Heraklion) | 20–28° | 22° | 0 | 0 |
| Rhodes | 22–28° | 23° | 0 | 0 |
| Mykonos (Cyclades) | 21–27° | 22° | 1 | 5 |
| Santorini (Cyclades) | 21–28° | 22° | 1 | 5 |
Long-term averages in Celsius, from Climates to Travel (Athens, Thessaloniki and Heraklion: 1991–2020). “Rain days”: days in the month with precipitation. The source gives no sea temperature for Thessaloniki. These are averages, not a forecast: any year can bring heatwaves, cold spells or storms.
The sea in June: can you swim?
Yes. In June the sea is warm: 22–23°C on average around Athens, Crete, Rhodes and the Cyclades.
What's open and on in June
- Peak tourist season. In Mykonos the beach clubs are open from late June to mid-September. (SantoriniDave)
- The Athens Epidaurus Festival runs from May to October. At the ancient theatre of Epidaurus, performances are on Fridays and Saturdays in July and August. (Wikipedia)
Holidays and events
- 21 June 2027 · Whit Monday (Agiou Pnevmatos) Banks and public services closed. Most shops are usually open.
- 10 June 2027 – 11 June 2027 · ✡️ Shavuot (starts the evening of 10 June)
Greek holidays: full calendar · Jewish holidays: Hebcal – Jewish holidays 5787
What to pack in June
- Light, breathable clothes, a hat, sunglasses and sunscreen.
- A water bottle for sightseeing: ancient sites have little shade.
- Swimwear: the sea is around 22°C.
Plan your trip
Common questions
What is the weather like in Greece in June?
In June Athens averages 21–30°C, with about 1 rain days. The sea around Athens and the islands is around 22–23°C. Warmest place in the table: Athens (up to 30°C). Thessaloniki: 18–30°C.
Can you swim in the sea in Greece in June?
Yes. In June the sea is warm: 22–23°C on average around Athens, Crete, Rhodes and the Cyclades.
How many rain days are there in Greece in June?
Athens has about 1 rain days on average in June. Most rain days in the table: Thessaloniki (3).
Where is warmest in Greece in June?
By the averages in the table, Athens: up to 30°C by day. Coldest is Thessaloniki and the north: 18–30°C.
What should I pack for Greece in June?
Light, breathable clothes, a hat, sunglasses and sunscreen. A water bottle for sightseeing: ancient sites have little shade. Swimwear: the sea is around 22°C.
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Sources
Information checked on 4 October 2026. Dates and opening hours change, so check before you travel.
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