SkiathosPhoto: Shi Annan · CC BY-SA 4.0Greece · Europe
Best time to visit Skiathos
Skiathos is known for over 60 sandy beaches, above all pine-backed Koukounaries. Summers are warm and dry with a swim-warm sea, and the island is greener than the Cyclades. May to September is best.
Climate decision
Best travel months for Skiathos
Joint highest scores
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Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
October · Monthly precipitation
115.3 mm/month
1991–2025: 58.9 mm/month
+56.4 mm/month · higher
December · Mean daily maximum
15 °C
1991–2025: 13.4 °C
+1.6 °C · higher
April · Wet days
8 days/month
1991–2025: 6.4 days/month
+1.6 days/month · higher
August · Sea temperature
27.2 °C
1991–2025: 26.3 °C
+0.9 °C · higher
July: 41/155 days at or above 30 °C; highest single value 39.9 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Coast and sea
Skiathos: the swimming season follows two curves
Average daily highs vary by 15.6 °C through the year, while the sea varies by 12.3 °C. Air and water temperature should therefore be considered separately.
The practical difference
The month with the highest daytime temperature and the month with the warmest sea need not define the same travel window. Rain and sunshine help resolve the trade-off.
Warmest sea
August · 26.3 °C
Highest average daily high
July and August · 27.5 °C
Fewest rainy days
July · 2.5
Most sunshine
June · 9.2 h
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| January | 12 | 9 | 10 | 65 | 2.2 | 78 | 4.9 | 14 | 37 |
| February | 12 | 9 | 9 | 59 | 3.2 | 77 | 4.8 | 14 | 41 |
| March | 14 | 10 | 9 | 58 | 4.8 | 74 | 4.3 | 14 | 47 |
| April | 17 | 13 | 6 | 36 | 6.6 | 73 | 3.4 | 15 | 61 |
| May | 21 | 17 | 6 | 25 | 8.0 | 70 | 3.0 | 19 | 79 |
| June | 25 | 22 | 4 | 23 | 9.2 | 65 | 2.9 | 23 | 93 |
| July | 27 | 24 | 2 | 17 | 9.2 | 63 | 3.3 | 25 | 92 |
| August | 28 | 25 | 3 | 17 | 8.2 | 64 | 3.7 | 26 | 91 |
| September | 25 | 22 | 6 | 40 | 6.1 | 67 | 3.7 | 25 | 93 |
| October | 21 | 18 | 7 | 59 | 4.0 | 73 | 4.1 | 22 | 79 |
| November | 17 | 14 | 9 | 61 | 2.5 | 77 | 4.3 | 18 | 57 |
| December | 13 | 11 | 10 | 78 | 1.9 | 78 | 4.8 | 16 | 40 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
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Where to stay in Skiathos
Compare available stays, prices and cancellation terms for Skiathos on Booking.com.
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The number is the overall climate score, not a similarity score.
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Frequently asked questions
When is the best time to visit Skiathos?
The strongest climate months are June, July, August, September. Values are historical averages, not a forecast.
Which month has the highest average daily maximum temperature in Skiathos?
Average daily maximum temperatures in Skiathos are practically tied in July and August at around 28 °C.
When is the sea warmest at Skiathos?
In August, at around 26 °C.