Greece
Skiathos in September: weather, sea & travel advice
This month's data profile
Sea conditions lead
Skiathos in September is climatically well suited to family holidays, city breaks, beach holidays and active holidays and hiking. The average daily high is around 25 °C, and the sea is about 25 °C. With about 6 rainy days it is dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
93/100 · #1
Warmth
#4
Dryness
#5
Sun
#6
Sea warmth
#3
Published best categories: Overall, Beach, City break, Family
Skiathos · SeptemberPhoto: Shi Annan · CC BY-SA 4.0Climate facts
- Average high
- 25 °C
- Average low
- 22 °C
- Sea
- 25 °C
- Rainy days (est.)
- 6 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 67 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 28 | 25 | 3 | 17 | 8.2 | 64 | 3.7 | 26 | 91 |
| September (selected) | 25 | 22 | 6 | 40 | 6.1 | 67 | 3.7 | 25 | 93 |
| October | 21 | 18 | 7 | 59 | 4.0 | 73 | 4.1 | 22 | 79 |
How do the previous and next months compare?
Baseline: September (93/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | -2 | +2.9 °C | +2.9 °C | -2.6 | -23.3 mm | +2.1 h | -2.6 % | -0.1 m/s | +1.8 °C |
| October | -14 | -3.9 °C | -3.9 °C | +1.1 | +18.8 mm | -2.1 h | +6.6 % | +0.4 m/s | -3 °C |
All twelve months in context
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Frequently asked questions
How warm is Skiathos in September?
The average daily high is around 25 °C, with an average daily low of about 22 °C.
Can you swim in Skiathos in September?
The sea is about 25 °C (warm).
Does it rain a lot in Skiathos in September?
The curated estimate is about 6 rainy days per month, not a directly measured long-term average. Total precipitation averages around 40 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Skiathos?
By the climate score, June, July, August and September are the strongest months for Skiathos. For a beach trip: June, July, August and September. September is one of them.