Heraklion (Crete) weather in April

April in Heraklion: nice, dry, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Heraklion🇬🇷 Greece · Greece & Cyprus · Island83
  1. 70Jan
  2. 73Feb
  3. 77Mar
  4. 83Apr
  5. 86May
  6. 93Jun
  7. 94Jul
  8. 94Aug
  9. 95Sep
  10. 90Oct
  11. 82Nov
  12. 72Dec

#7 of 12 months in Heraklion · #463 of 1413 destinations to visit in April · comfort 83/100 (tier A)

Days
21°C
Nights
12°C
Wet days
5
Sun
11.5 h
Humidity
68%
Daylight
13 h
Heraklion, Greece
Photo: K · Pexels

Traveller notes on Heraklion in April

Other months in Heraklion

Regulars are specific this month splits cleanly - the first ten days still capable of the odd showery day and a cool sea, while shower-free days far outweigh the wet ones by mid-month, and late May can already turn genuinely hot with little to no rain chance left. Our row backs that mild-to-warm read sitting across that range, 24.1C over 15.8C nights, with 37.4mm of rain across 5.5 days and humidity at 63 percent. Regulars are consistent air quality and clarity feel notably fresh and clear early in the month, ideal for walking before the heat properly sets in. The sea sits at a cool 19.1C, still brisk early on but warming steadily as the month goes on. The record: 12.3 hours of sun, a 13 kph wind and AQI 49.
EarlyShoweryLateSettledIntoRealSummer · May · 1 month ago · Read more on Tripadvisor ↗
October on this island splits into two halves and the board is precise about where. Early October can still reach towards 30C on a good day; around the middle of the month the weather turns, usually a storm and a couple of days of heavy rain, after which it often comes back warm and dry. Our row averages 24.1C over 17.5C with 33.3mm across only 4.1 days, which is that pattern flattened into a month. On the sea they run warmer than our column - they say 26C, ours reads 23.8C - still swimming water either way, and they add that unheated pools now cool faster than the sea does. Their other advice is about where to stay: seasonal resorts start shutting through the second half of October, while a year-round town like this one keeps working. The record: humidity 76 percent, 9.9 hours of sun and AQI 40.
TheTownStaysOpenTheResortsDont · October · 1 month ago · Read more on Tripadvisor ↗
Heraklion-forum threads on June weather call it settled and warm to hot from the start of the month, getting hotter the further in you go - definitely beach weather, with days reckoned at 30C-plus on the warmer stretches. Evenings stay comfortable for most of the night, though it can drop into the high teens Celsius in the very early hours, and a light summer dress works fine except for the occasional cool evening when the wind picks up. The sea runs pleasantly warm by most accounts, though a few visitors find it a touch cool on first entering. Regulars call June one of the most pleasant months on the island specifically because it's less busy and less intensely hot than July or August. The record: 27.8C days feeling like 30C, 20.2C nights, just 16mm across 2.5 days, a 23.2C sea, 60 percent humidity and 13.2 hours of sun.
KnossosJuneRegular · June · 1 month ago · Read more on Tripadvisor ↗
August is Crete's hottest month and the forum's word for it is African: averages near 30C by day and 22 at night, but with plenty of days at 35 and some at 40, and nights that will not drop below 25. Our row for Heraklion gives 29.8C and 23.3C, reading as 32C. The thing that makes it liveable is the meltemi, which starts around the end of July and blows through August from the north - regulars say plainly that it takes the sting out of the heat. Heraklion is on the north coast, where that wind is strongest, and a few southern spots get it anyway through channelling. Their honest advice for August is to plan nothing: the beach, or the shade. May and September are the alternatives. The record: 1.4 precipitation days, 12.5 hours of sun and a 27.7C sea.
TheWindTakesTheSting · August · 1 month ago · Read more on Tripadvisor ↗

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Heraklion climate normals — April

Daytime high21°C / 69°F😎 nice
Nighttime low12°C / 54°F
Feels like (high)21°C / 70°F
Sea temperature17°C / 63°F🧊 bracing
Rainfall28 mm / 1.1 in☀️ dry
Rainy days5 days
Humidity68%💧 humid
Dew point11°C / 51°F
Sunshine11.5 h/day
Daylight13.1 h
Wind13 km/h / 8 mph
Air quality (US AQI)49🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Heraklion in April

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsOrthodox Easter, Coach and cruise season at Knossos, Easter holidays (Orthodox) in Greece(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Heraklion's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherHeraklion's weather peaks July–September.

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Best weatherFair weatherToughest weather

What's on in Heraklion in April

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Nature

    Spring on the Messara

    10 Mar – 10 May · usuallyWildflowers & blooms

    The plain south of the city and the climb up to the Lasithi plateau are green and flowering for two months, which is also when the archaeological sites are walkable at midday.

  • Holiday

    Orthodox Easter

    10–13 AprEaster & Holy WeekClosuresBook early

    Shops, museums and half the restaurants shut from Good Friday through Easter Monday while the villages roast lamb. Domestic flights and the Piraeus ferries fill first. Source ↗

  • Season

    Coach and cruise season at Knossos

    15 Apr – 31 OctCrowdedBook early

    The site takes the island's whole coach and cruise load between ten and two, on almost no shade. Being at the gate when it opens is the only version of Knossos worth having.

What's on around the world in April →

Nearby, and something's on

Within 300 km of Heraklion — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Heraklion?

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Heraklion in April — FAQ

Is April a good time to visit Heraklion?
April in Heraklion: nice, dry, with clean air — an excellent time to visit. It ranks #7 of 12 months for Heraklion on SeasonMap's comfort score (83/100).
What is the weather like in Heraklion in April?
In April, Heraklion averages a daily high of 20.6°C and a low of 12.4°C, with about 27.8 mm of rain over roughly 4.8 rainy days.
What is the air quality in Heraklion in April?
Heraklion has a mean US Air Quality Index of about 49 in April.

Within 300 km: Chania's Spring wildflowers and greens around 10 Mar – 10 May, and Santorini's Wildflowers on the slopes around 1 Mar – 15 Apr.