Oia weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Poor
Best time to visit: June – September
What is the weather like in Oia in April?
In April, Oia is mild: daytime highs average 17 °C, and nights cool down to about 14 °C. The sea averages 17.0 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 9 hours a day. Rain is rare: about 3 days bring 14 mm in total. It is often windy, with gusts of around 32 km/h. All in all, April is not an ideal month for a holiday in Oia.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 13 h 5 min06:46 – 19:51
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 32 km/haverage daily peakAll months
- Cloud cover
- 34 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %93 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in April
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Windproof jacket
Oia in April: quick answers
Is Oia hot in April?
No. In April, Oia is mild: daytime highs average 17 °C and nights drop to about 14 °C.
Can you swim in Oia in April?
Only if you don't mind cold water: in April the sea averages just 17.0 °C. Comfortable swimming is possible from June to October.
Does it rain much in Oia in April?
Rain is rare: about 3 days bring 14 mm in total.
Oia month by month
The whole year in OiaAll destinations: GreeceSantorini weather in AprilWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences