Santorini weather in April 2026

Expect daytime maximum temperatures of 19°C in Santorini, Greece in April based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 19°C maximum daytime temperature in April in Santorini (Thira)19
    19°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in April in Santorini (Thira)5
    5 days with some rainfall
  • 12°C minimum night-time temperature in April in Santorini (Thira)12
    12°C min night temperature
  • 13 hours of daylight per day in April in Santorini (Thira)13
    13 hours of daylight per day
  • No heat & humidity in April in Santorini (Thira)0
    No heat & humidity
  • 28 mm monthly rainfall in April in Santorini (Thira)28
    28 mm of monthly rainfall
  • UV (maximum) index 7 (High) in April in Santorini (Thira)7
    7 (High) UV index
  • 16°C sea temperature in April in Santorini (Thira)16
    16°C sea temperature

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The April weather guide for Santorini (Thira) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Santorini destinations

Below are average maximum temperatures at popular countries, regions and places in Santorini in April. Select a holiday destination to see more weather parameters.

All Santorini destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Santorini in April?

Daytime temperatures usually reach 19°C in Thira, Santorini in April, falling to 12°C at night.

How sunny is it in Santorini in April?

There are normally 8 hours of bright sunshine each day in Thira, Santorini in April - that's 62% of daylight hours.

How warm is the sea around Santorini in April?

The average sea temperature around Thira, Santorini in April is 16°C.

Does it rain in Santorini in April?

There are usually 5 days with some rain in Thira, Santorini in April and the average monthly rainfall is 28mm.

Santorini April sunrise & sunset times

Browse the sunrise and sunset times for Santorini in April 2026. Select a month to view Santorini sunrise and sunset times for the next 12 months. The Santorini sunrise and sunset times shown below are for Thira.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st April 2026 06:05 18:40
Wednesday, 15th April 2026 05:45 18:52
Thursday, 30th April 2026 05:26 19:05

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