Thessaloniki vs Skiathos: which is sunnier?
🇬🇷 Greece vs 🇬🇷 Greece · 156 km apart · long-term climate normals (NASA POWER, 2001–2020)
Thessaloniki and Skiathos are virtually tied for annual sunshine — about 2,531 vs 2,524 hours a year. Skiathos has the higher Sunshine Score in 7 of 12 months, Thessaloniki in 1 (4 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Thessaloniki | Skiathos | |
|---|---|---|
| Sunshine hours / year | 2,531 | 2,524 |
| Sunniest month | June (87/100) | August (91/100) |
| Nov–Feb average score | 30/100 | 41/100 |
| Jun–Aug average score | 76/100 | 90/100 |
| Rain / year | 516 mm | 554 mm |
| Warmest sea | 31°C / 88°F | 27°C / 81°F |
| Peak midday UV | 8 (very high) | 9 (very high) |
Thessaloniki vs Skiathos month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Thessaloniki | Skiathos | Thessaloniki | Skiathos | Thessaloniki | Skiathos | Thessaloniki | Skiathos | |
| January | 14 | 27 | 10° | 12° | 47 | 67 | 10° | 16° |
| February | 29 | 35 | 12° | 13° | 38 | 58 | 10° | 15° |
| March | 50 | 48 | 15° | 15° | 48 | 60 | 13° | 15° |
| April | 86 | 66 | 20° | 17° | 40 | 34 | 18° | 17° |
| May | 85 | 89 | 26° | 22° | 46 | 26 | 21° | 18° |
| June | 87 | 88 | 31° | 26° | 38 | 29 | 27° | 24° |
| July | 71 | 90 | 34° | 28° | 29 | 20 | 31° | 27° |
| August | 71 | 91 | 34° | 28° | 24 | 16 | 30° | 27° |
| September | 85 | 86 | 28° | 25° | 47 | 43 | 28° | 25° |
| October | 84 | 84 | 22° | 21° | 51 | 52 | 22° | 23° |
| November | 57 | 62 | 16° | 17° | 44 | 61 | 17° | 19° |
| December | 21 | 39 | 11° | 14° | 64 | 88 | 12° | 17° |
The sunnier month by month: Jan Skiathos · Feb Skiathos · Mar even · Apr Thessaloniki · May Skiathos · Jun even · Jul Skiathos · Aug Skiathos · Sep even · Oct even · Nov Skiathos · Dec Skiathos.
When to pick which
- November–February: Skiathos (average score 41/100 vs 30). Skiathos is the warmer, around 14°C daytime highs vs 12°C. See the winter sun ranking.
- March–May: Thessaloniki (average score 74/100 vs 68). Thessaloniki is the warmer, around 20°C daytime highs vs 18°C.
- June–August: Skiathos (average score 90/100 vs 76). Thessaloniki is the warmer, around 33°C daytime highs vs 27°C.
- September–October: too close to call — Thessaloniki averages 85/100, Skiathos 85/100. Thessaloniki is the warmer, around 25°C daytime highs vs 23°C.
Sea temperature
Thessaloniki's sea gets warmer: 31°C / 88°F at its peak vs 27°C. Swimmable water (21°C+): Thessaloniki about 6 months a year, Skiathos about 5 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Thessaloniki weather by month · Skiathos weather by month · Best time to visit Greece.
More comparisons: Thessaloniki vs Skopje · Thessaloniki vs Ohrid · Skiathos vs Athens · Skiathos vs Patras · all head-to-heads