Weather in Skiathos in June

How June compares

June is the 4th warmest month of the year in Skiathos and ranks 117th of 134 destinations we compare for June - see where else is hot in June. Within Greece it is 40th of 44 (Greece in June). Against London's average high of 19.6°C in June, Skiathos is 4.0°C warmer by day and 10.4°C warmer at night.

Daytime and night-time in June

The typical June day in Skiathos peaks at 23.6°C, but that is an average: the warmest 10% of days reach 26.0°C or more. Roughly 1 in 4 days top 25°C and 1 in 167 pass 30°C. Nights average 21.7°C; one night in ten drops to 19.2°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest June day here reached 33.0°C (2007-06-27) and the coldest night 15.6°C (1997-06-01).

Rain in June

Dry (3 rainy days or fewer): about 2 days with 1 mm or more, 13 mm in total. Year to year it varies a lot - the wettest June was 2018 with 104 mm, the driest 1998 with 0 mm. Humidity averages 76%.

Sea temperature in June

The sea averages 22.8°C - warm enough to swim (22°c+). Depending on the year it ranges from 21.9°C to 23.9°C. For the warmest sea here, come in August (26.3°C).

Sunshine and daylight

Around 11.7 hours of sunshine a day (estimated from cloud cover), 14.7 hours of daylight: the sun rises about 05:59 and sets about 20:54 local time in mid-June. Average cloud cover is 21%.

Is June a good time to visit Skiathos?

Yes - it is one of the better months: warm days, little rain and long sunny days. The best months for Skiathos on our scoring are July, August, June; months averaging 25°C or more: Jul, Aug.

Warm days without frequent extreme heat

Expect comfortable warmth rather than consistently hot afternoons. Days reach 25°C about 24% of the time, while 30°C is reached on just 1% of days. That suits travellers who want to spend time outdoors without planning everything around avoiding the heat, although shade is still sensible at midday. Nights average around 22°C, so evenings are generally warm enough for light clothing. Pack a light layer as well: the colder nights can fall to around 19°C or below. June is a reasonable compromise if you like summer warmth but would rather not depend on air conditioning for comfort throughout the day.

Sea swimming and long sunny days

The sea averages 22.8°C, putting June firmly in swimming territory rather than making a dip something to endure. The year-to-year range of 22°C to 24°C means it can feel fresher or warmer depending on the year, so do not expect bath-like water. There is plenty of time to fit swimming around other outdoor plans, with about 11.7 hours of sunshine out of 14.7 hours of daylight. Take sun cream, sunglasses and something to cover your shoulders. The long sunny stretch makes shade breaks useful even when the air temperature feels moderate, particularly if you are spending much of the day beside the water.

Low rain risk, but pack for some variation

Rain is unlikely to dominate a June holiday, with about 2 rainy days across the month. You can reasonably make outdoor plans without treating wet weather as the main constraint, but that average is not a promise of an entirely dry stay. A compact waterproof is a sensible precaution rather than the focus of your packing. Humidity averages 76%, so the air may feel more humid than the temperature alone suggests; loose, breathable clothing is a practical choice. Keep plans flexible enough to move a swim or an outdoor meal if rain arrives, rather than expecting every day to follow the same pattern.