Places / Santorini
UV index at Santorini, Greece
Check another placeLoading today’s UV…
- Low 0 to 2
- Moderate 3 to 5
- High 6 to 7
- Very high 8 to 10
- Extreme 11+
Hour-by-hour numbers
| Time | UV index | Level |
|---|
The next few days
Each day’s UV curve and peak, drawn on the same scale so you can compare. The forecast reaches roughly four days ahead.
What to do today
About Santorini
Santorini sits in the Aegean Sea at about 36° north. Its whitewashed towns of Fira and Oia and the volcanic caldera draw visitors for long days of walking, boat trips and beach time, most of it with little natural shade.
Whitewash, water and your real UV
The forecast above measures UV from the sky. Santorini’s bright white buildings and pale stone streets reflect noticeably more UV than ordinary pavement, and the sea adds further reflection on catamaran and sunset-cruise trips. The combination makes shaded café tables and narrow alleyways feel deceptively cooler than the UV dose you’re actually getting.
When UV is strongest here
UV peaks from June through August, when the Aegean sun is high and skies are reliably clear. Spring and early autumn still reach moderate to high levels on sunny days, especially at midday on open clifftop paths.
On caldera walks and boat trips
The cliffside walk between Fira and Oia has almost no shade, and popular red and black sand beaches sit under direct sun most of the day. Catamaran tours around the caldera add hours of open-water exposure.
Sun protection tips for Santorini
- Walk the Fira-to-Oia caldera path early morning or late afternoon, both for cooler temperatures and lower UV.
- Reapply sunscreen after time in whitewashed alleys — the glare undersells how much UV you’re getting.
- Bring a cover-up and wide-brim hat for catamaran and sunset-cruise excursions.
- Wear sunglasses with UV protection; the white buildings and pale stone add significant glare.
Similar places
Related guides
- What Is the UV Index? A Plain-English Guide to the Scale
- What to Wear Hiking for Sun Protection: A Practical Guide
UV forecasts are model estimates for the area and can differ from what you experience on the ground. This is general information about sun safety and isn’t medical advice. Last updated September 22, 2026.