Weather in Therasia in August
Expect hot, almost completely dry weather in Therasia in August, the height of summer. Daytime highs average around 28°C / 82°F, and nights drop to about 23°C / 74°F. Nights stay warm, so air-conditioning helps. Rainfall is close to zero. Sea temperatures average around 24°C / 75°F, warm enough for long swims. The meltemi, the northerly wind of the Aegean, blows on many days and takes the edge off the heat, though it can also whip up dust and rough seas. Therasia is Santorini's quiet sister, sitting on the western edge of the same volcanic caldera. You get about 13½ 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. Get out early and late, and save the hottest hours of the afternoon for the water.
Swimming in Therasia in August
Swimming is excellent in Therasia in August, with the sea averaging around 24°C / 76°F. The water is at its warmest of the year now, after warming steadily through July. The summer wind can churn up exposed beaches, so check which way it's blowing before you pick one. Many coves are rocky or pebbly, so water shoes are useful. Popular beaches fill up by late morning, so arrive early.
Crowds & Prices in Therasia in August
August is the busiest time on Therasia, but busy here is relative: the beaches are lively and rooms are full, yet it never feels like the big resort islands. Accommodation is at its most expensive, and the best rooms go early. Around 15 August, when Greek families travel, ferries and rooms sell out. Weekdays are calmer than weekends at the most popular spots. Book accommodation and ferries months ahead.
What's Open in Therasia in August
In August, 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 August
15 August, the Dormition of the Virgin Mary, is the biggest summer holiday, with church services and village festivals everywhere. Many Greeks return to their home villages in August, and panigyria, village feasts with live music and dancing, run late into the night. Locals in Therasia mark these dates in the traditional way, and visitors are welcome to join in. Look out for posters announcing local feasts and concerts, often only a few days ahead.
Is August a Good Time to Visit Therasia?
Yes, August is worth it for sun, swimming and a lively summer buzz in Therasia. In numbers: highs of about 28°C / 82°F, lows of 23°C / 74°F and almost no rain in a typical August. 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 August?
In early August, the sun sets in Therasia at around 8:25 pm. By mid-month it's around 8:10 pm, and by the end of August around 7:50 pm. All times are Greek local time. The long evenings leave plenty of daylight after the heat of the day.
Is it windy in Therasia in August?
Often, yes. August is the height of the meltemi, a strong, dry northerly wind that blows across the Aegean on many summer days, sometimes for several days in a row. It keeps the heat bearable, but it can make exposed beaches rough and delay fast ferries and small boats. South-facing beaches are usually more sheltered.
Can I take a day trip to Therasia in August?
Yes. Local boats from Santorini and many caldera boat tours stop at Therasia in August. It's a glimpse of how Santorini looked before mass tourism.
Do I need a car on Therasia in August?
No. Therasia is small enough to explore on foot, and the distances between the harbor, village and beaches are short. In August, some beaches may also be served by small boats or a seasonal minibus, and it's worth bringing a hat for the walks.
Is August or September better for visiting Therasia?
September, for most travelers. The sea is still warm, the crowds thin out after the first week or two and prices drop, while most businesses stay open. August is the choice only if you want the island at its busiest and liveliest.
Therasia Weather by Month
