Greece Santorini Weather in April — Climate Guide
April in Santorini is very-high
April is very-high for Santorini.
Hotels fully reopen + Orthodox Easter (one of Greece's biggest holidays — book early).
Travel score
Santorini April Weather Stats
Avg High
18°C
Avg Low
12°C
Rainy Days
6
30mm total
Sunshine
8h
Daily avg
Humidity
65%
moderate
UV Index
5
Moderate
Wind
11 km/h
Gusts 30
Sea Temp
16°C
swimming possible (chilly)
Crowds
Busy
At attractions
April Sunrise & Sunset
Air Quality
PM2.5
13 μg/m³
PM10
22 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
18°C
Nighttime
12°C
Humidity and wind affect how the actual temperature feels.
Wind
11 km/h
Max gust 30 km/h
Activities Recommended for April
April Travel Pros & Cons
Pros
- 18/12°C ideal
- Hotels fully open
- Wildflower hillsides
- Long daylight
Cons
- Orthodox Easter premium 2x
- Crowds rising
April Events & Festivals
- Orthodox Easter (varies April-May)
- Hotels fully reopen
- Sun + Aegean clear
Santorini in April — Full Picture
Hotels fully reopen + Orthodox Easter (one of Greece's biggest holidays — book early).
What to Wear & What to Pack
Spring perfect. Tee + light jacket for evening.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current18.7°C
12.7°C
5.7/mo
Summer (Jun·Jul·Aug)
28.3°C
21.3°C
0.3/mo
Autumn (Sep·Oct·Nov)
21.7°C
16°C
5/mo
Winter (Dec·Jan·Feb)
14.3°C
9.7°C
10.7/mo
Santorini Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 14° | 9° | 11d·75mm | 4h | 73% | 1 | Quiet | Low season | |
| 14° | 9° | 10d·65mm | 5h | 71% | 2 | Quiet | Low season | |
| 15° | 10° | 8d·55mm | 6h | 70% | 3 | Quiet | Shoulder | |
| April (Best) | 18° | 12° | 6d·30mm | 8h | 65% | 5 | Busy | Peak |
| May (Best) | 23° | 16° | 3d·15mm | 10h | 60% | 7 | Very busy | Peak |
| June (Best) | 27° | 20° | 1d·5mm | 12h | 55% | 9 | Very busy | Peak |
| 29° | 22° | 0d·0mm | 13h | 50% | 10 | Very busy | Peak | |
| 29° | 22° | 0d·0mm | 12h | 52% | 9 | Very busy | Peak | |
| September (Best) | 25° | 19° | 2d·15mm | 10h | 60% | 7 | Very busy | Peak |
| October (Best) | 22° | 16° | 5d·50mm | 7h | 65% | 4 | Busy | Shoulder |
| 18° | 13° | 8d·65mm | 5h | 70% | 3 | Quiet | Shoulder | |
| 15° | 11° | 11d·75mm | 4h | 73% | 2 | Quiet | Low season |
View Other Months
Santorini April Hotel Picks
Frequently Asked Questions
Is April a good time to visit Santorini?
Santorini in April is very-high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Santorini in April?
Santorini April averages a high of 18°C and a low of 12°C.
Does it rain much in Santorini in April?
Santorini April averages 30mm of rainfall over about 6 rainy days.
What should I wear in Santorini in April?
Spring perfect. Tee + light jacket for evening.
What time are sunrise and sunset in Santorini in April?
Santorini April sunrise is 06:45 and sunset is 19:30, with 13h of daylight.
What's the air quality like in Santorini in April?
Santorini April air quality (AQI) averages 40, rated Good. PM2.5 averages 13μg/m³.
What activities are recommended in Santorini in April?
In April, Santorini is great for Oia sunset (less crowded), Akrotiri, Caldera cruise.
Is April peak season in Santorini?
Santorini April crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Santorini
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.