Mykonos vs Santorini: which is sunnier?
🇬🇷 Greece vs 🇬🇷 Greece · 116 km apart · long-term climate normals (NASA POWER, 2001–2020)
Santorini is the sunnier overall: about 3,012 hours of sunshine a year to Mykonos's 2,897. Santorini has the higher Sunshine Score in 7 of 12 months; the other 5 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Mykonos | Santorini | |
|---|---|---|
| Sunshine hours / year | 2,897 | 3,012 |
| Sunniest month | July (96/100) | June (96/100) |
| Nov–Feb average score | 44/100 | 55/100 |
| Jun–Aug average score | 95/100 | 96/100 |
| Rain / year | 523 mm | 488 mm |
| Warmest sea | 26°C / 79°F | 26°C / 79°F |
| Peak midday UV | 9 (very high) | 10 (very high) |
Mykonos vs Santorini month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Mykonos | Santorini | Mykonos | Santorini | Mykonos | Santorini | Mykonos | Santorini | |
| January | 32 | 40 | 13° | 14° | 100 | 96 | 16° | 18° |
| February | 34 | 48 | 13° | 15° | 84 | 81 | 16° | 17° |
| March | 51 | 59 | 15° | 16° | 48 | 44 | 16° | 17° |
| April | 61 | 69 | 16° | 17° | 29 | 26 | 17° | 18° |
| May | 85 | 93 | 19° | 21° | 21 | 19 | 19° | 19° |
| June | 94 | 96 | 23° | 25° | 9 | 5 | 22° | 23° |
| July | 96 | 96 | 24° | 27° | 3 | 2 | 25° | 25° |
| August | 96 | 96 | 25° | 27° | 2 | 2 | 26° | 26° |
| September | 92 | 94 | 23° | 25° | 20 | 18 | 25° | 25° |
| October | 88 | 89 | 20° | 22° | 46 | 44 | 23° | 23° |
| November | 63 | 78 | 17° | 19° | 68 | 64 | 20° | 21° |
| December | 46 | 54 | 15° | 16° | 93 | 87 | 17° | 19° |
The sunnier month by month: Jan Santorini · Feb Santorini · Mar Santorini · Apr Santorini · May Santorini · Jun even · Jul even · Aug even · Sep even · Oct even · Nov Santorini · Dec Santorini.
When to pick which
- November–February: Santorini (average score 55/100 vs 44). Daytime highs are similar (15°C vs 16°C). See the winter sun ranking.
- March–May: Santorini (average score 74/100 vs 66). Daytime highs are similar (17°C vs 18°C).
- June–August: too close to call — Mykonos averages 95/100, Santorini 96/100. Santorini is the warmer, around 26°C daytime highs vs 24°C.
- September–October: too close to call — Mykonos averages 90/100, Santorini 92/100. Santorini is the warmer, around 24°C daytime highs vs 22°C.
Sea temperature
Both seas peak at 26°C / 79°F. Swimmable water (21°C+): Mykonos about 5 months a year, Santorini about 6 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Mykonos weather by month · Santorini weather by month · Best time to visit Greece.
More comparisons: Mykonos vs Athens · Mykonos vs Chaniá · Mykonos vs Samos · Santorini vs Heraklion · Santorini vs Chaniá · Santorini vs Kos · all head-to-heads