Mild in Apr
22°C average high
avg high · 12° at night
25°C+ on 1 in 10 days
Greece
Santorini weather in April
Is it warm? Not really. April in Santorini is cool: afternoons average 20°C and nights 14°C. Most days (80%) peak between 18°C and 22°C.
Cool · average high
20°C
25°C or more on almost no days; 20°C or more on about four in ten days.
- Average low14°overnight
- Sea17°average, 2022–2025
- Rainy days215 mm in the month
- SkySome cloud33% cloud · 52% clear days
How warm it really gets
Every April afternoon from 2011–2025: 450 days. Most (80%) peaked between 18° and 22°.
April, year by year
The average April high in each year. The warmest, 2024, averaged 21°C; the coolest, 2011, 19°C.
Compared with home
Average April highs. Expect rain on about 2 days (15 mm in a typical month).
- Santorini20°
- London15°
- Glasgow13°
- Cork13°
- Manchester13°
- Dublin13°
- Belfast13°
Warmer in April, not much further
Flying times are estimates from Dublin; Santorini is about 4h 15m.
Mild in Apr
21°C average high
avg high · 13° at night
25°C+ on 2 in 10 days
Mild in Apr
21°C average high
avg high · 13° at night
25°C+ on 1 in 10 days
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Santorini airport. Sea: Copernicus ERA5, 2022–2025. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology