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What Is the Weather Like in Therasia in July?

Avg High: 28°C / 83°F

Avg Low: 23°C / 74°F

Sea Temp: 24°C / 75°F

Rain Days: 0

Rainfall: 0 mm

Daylight: 14h 25m

Swimming: Yes

Season: Peak

Key Facts

Worth Going?

Yes – peak beach season, book early

Weather in Therasia in July

Expect hot, almost completely dry weather in Therasia in July, the height of summer. Expect highs of about 28°C / 83°F and overnight lows near 23°C / 74°F. Nights stay warm, so air-conditioning helps. Rainfall is close to zero. In the water, expect around 24°C / 75°F, warm enough for long swims. Therasia is Santorini's quiet sister, sitting on the western edge of the same volcanic caldera. Summer weather here is shaped by the meltemi, a dry northerly wind that keeps the heat bearable but can make exposed beaches choppy. You get about 14½ hours of daylight a day, leaving long, light evenings. Bring loose, light clothing, a wide-brimmed hat, strong sunscreen and sunglasses. When the wind picks up, a light windproof layer is handy for evenings by the water. Evenings are the best time to be out, when the heat fades and the light softens. Get out early and late, and save the hottest hours of the afternoon for the water.

Swimming in Therasia in July

The sea in Therasia averages around 24°C / 75°F in July, warm enough to stay in for as long as you like. The sea hasn't fully warmed up yet, as August is usually the warmest month, but conditions are already very good. On windy days, choose a beach sheltered from the north, where the water stays calmer. Arrive early to get space on the busiest beaches.

Crowds & Prices in Therasia in July

Even at its busiest in July, Therasia stays small-scale, though rooms and ferry seats sell out. Prices for rooms, car hire and ferries are at their yearly high. Staying slightly outside the main town usually means better value and more space. Early mornings and late afternoons are the quietest times at popular sights. Book early, as the best-value rooms go first.

What's Open in Therasia in July

In July, ferries from Santorini to Therasia run often, with extra fast boats in the peak season. Everything is open, from hotels and tavernas to beach bars and boat trips. Shops in tourist areas often stay open into the evening. Boat trips and excursions run regularly, weather permitting. Opening hours are long, with many tavernas serving until late. Plan ahead for public holidays, when many businesses close.

Festivals & Holidays in Therasia in July

Saint days such as Prophet Elias on 20 July bring feasts to chapels across the country, often on hilltops. July is the start of the panigyri season, when villages celebrate their saints' days with music, dancing and long tables of food, often late into the night. In Therasia, as across Greece, these traditions are very much alive. Look out for posters announcing local feasts and concerts, often only a few days ahead.

Is July a Good Time to Visit Therasia?

Yes, July is worth it for sun, swimming and a lively summer buzz in Therasia. Expect highs of around 28°C / 83°F, lows near 23°C / 74°F and almost no rain. The trade-off is crowds and peak prices, so book early and plan around the busiest spots. If you'd rather have the same warm sea with more space, June, September or October would be a better choice.

Frequently Asked Questions

What time does the sun set in Therasia in July?

Through July, sunset in Therasia moves from around 8:40 pm to around 8:25 pm in Greek local time, as the evenings get shorter. In mid-July, expect it at around 8:35 pm. The long evenings leave plenty of daylight after the heat of the day.

How hot does Therasia get in July?

July is one of the two hottest months, with long, sunny days and almost no rain. The meltemi wind often takes the edge off the heat, but on calm days the midday sun is fierce, and heatwaves can bring a few days of extreme heat. Plan sightseeing for the morning or evening, and drink plenty of water.

Can I take a day trip to Therasia in July?

Yes. Local boats from Santorini and many caldera boat tours stop at Therasia in July. It's a glimpse of how Santorini looked before mass tourism.

Do I need a car on Therasia in July?

No. Therasia is small enough to explore on foot, and the distances between the harbor, village and beaches are short. In July, some beaches may also be served by small boats or a seasonal minibus, and it's worth bringing a hat for the walks.

Is July or August better for visiting Therasia?

July is usually slightly better. Both months are hot, busy and expensive, but August is the absolute peak, especially around the 15 August holiday, when Greek families travel and ferries and rooms sell out. If you must go in August, book everything early.

Loving Therasia?

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Therasia Weather by Month

Sunshine, rain and sea temperatures for January, plus travel tips.

Weather, sea temperature and travel tips for February.

What to expect in March: weather, crowds and what's open.

Is April a good time to go? See the weather and what's open.

Temperatures, swimming and what's on in May.

Planning a trip in June? Here's the weather and what to know.

Sunshine, rain and sea temperatures for July, plus travel tips.

Weather, sea temperature and travel tips for August.

What to expect in September: weather, crowds and what's open.

Is October a good time to go? See the weather and what's open.

Temperatures, swimming and what's on in November.

Planning a trip in December? Here's the weather and what to know.

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