What’s the Weather Like in Greece? Climate Overview by Month & Region 

Greece has one of the most welcoming climates in Europe – bright summers, mild springs and autumns, and gentle coastal winters. Knowing the weather month by month helps you choose between peak sunshine, quiet off-season travel, or the shoulder months that balance both. With thousands of islands and a varied mainland, each region shifts season at its own pace.

Southern regions, especially Crete and the Dodecanese, warm earlier and stay mild for longer. This makes the weather Crete region Greece particularly appealing for those who prefer warm springs and extended autumns. Meanwhile, destinations like Athens, the Peloponnese and parts of the Cyclades like Santorini follow a steady Mediterranean pattern that suits Greece holiday packages across much of the year. 

Greece Weather by Month: Average Temperatures

Figures are Athens-region averages, rounded from long-term climate records. Southern islands like Crete and Rhodes run warmer and stay mild longer; the northern mainland runs cooler with sharper seasons.

Month	Avg High	Avg Low	Sea Temp	Rainy Days	Good for
January	13°C	7°C	16°C	13	Museums, city breaks
February	14°C	7°C	15°C	11	Quiet sightseeing
March	16°C	8°C	15°C	11	Walking, early spring
April	20°C	12°C	16°C	8	Sightseeing, wildflowers
May	25°C	16°C	19°C	6	Beaches, best value
June	30°C	20°C	23°C	3	Swimming, island hopping
July	33°C	23°C	25°C	2	Peak beach, peak crowds
August	33°C	23°C	26°C	1	Warmest sea, busiest
September	28°C	19°C	25°C	4	Warm sea, fewer crowds
October	23°C	16°C	22°C	7	Culture, late beaches
November	18°C	12°C	20°C	9	Off-season, low prices
December	14°C	9°C	18°C	12	Christmas, quiet travel

Athens-region long-term averages. Conditions vary by year and region – check the Hellenic National Meteorological Service for official climate data.

What Is the Weather Like in Greece in Spring (April–May)?

Greece in spring runs 20°C in April and 25°C in May, with sea temperatures reaching about 19°C by late May – enough for early-season swimming. As spring arrives, Greece awakens gracefully. During April – a period often searched as weather in Greece in April – daytime highs in Athens reach around 20–22 °C, making sightseeing and coastal strolls pleasant. 

Temperatures go up even more in May and it is common to find temperatures in the 23-26°C in Athens, Crete and most of the Aegean islands. The Greece weather May is perfect to those who want sunshine and not the heat as experienced during the summer months. Temperatures of the sea start rising as well, particularly in the areas of Crete, also providing early season swimming with calm beaches and fewer people. Late spring is one of the best-value windows for Greece holidays. 

What Is the Weather Like in Greece in Summer (June–August)?

Greek summers reach 30–33°C on the coast and hotter inland, with sea temperatures peaking at 26°C in August – the warmest and busiest time of year. Greek summer is characterised by the heat, clear sky and still sea. Islands enjoy the invigorating breezes, more particularly those of the Aegean, and make them most comfortable even on the hottest common afternoons. 

Ideal for swimming, sailing and long beach days. Summer is peak season across the islands, offering postcard-perfect conditions for island hopping, water sports and vibrant coastal evenings — and if you’re weighing up all inclusive holidays, July and August are when resort demand runs highest.

What Is the Weather Like in Greece in Autumn (September–October)?

Greece in autumn holds 28°C in September and 23°C in October, with the sea still warm at 22–25°C and noticeably thinner crowds. One season that is largely accepted to be of the most balanced weather in Greece in September. In Greece, the weather in September resembles that of early summer, and the weather is approximately 24-28°C and warm waters caused by August. It is easier to navigate it takes the form of ferries, beaches and towns are lively and not congested. 

In October there is a gentle warmth. The Greece weather October is also generally between 20-24°C during the day, which is again conducive to cultural tours and sightseeing leisure visits and beach visits in late season to Crete after understanding the weather Crete region Greece. Even though there is some slow increase in the rainfall, the climate is generally pleasant. A lot of travellers who like cheaper prices and mild climate prefer to visit Greece during autumn that is included in the list of relaxing Greece holiday packages that make them feel in summer. September and October also open up more of the mainland and islands than peak summer comfortably allows – our guide to the best places to visit in Greece covers where to go once the crowds thin out.

What Is the Weather Like in Greece in Winter (November–March)?

Greek winters stay mild on southern coasts – Crete typically sits at 14–17°C mid-winter – while northern and inland regions drop close to freezing with mountain snow. The sun also shines and this makes it appropriate in off season walking holidays, food excursion and travelling locally. Crete stays the most reliable winter base, with mild coastal weather year-round – see the best places to visit in Crete for where that mild winter is actually worth spending it.

Other regions closer to the North and to the interior cool more, with almost freezing conditions. Snow covers the mountainous areas making the scenery totally different. Winter is not the time to go to the beach; it is the time to go to museums when there is no one and when exploration of culture by hindsight and silent attractions is more appropriate. 

How Does Weather Vary by Region in Greece?

These regional climate patterns follow data from the Hellenic National Meteorological Service.

• Southern Islands & Crete: Warmest year-round, earliest springs, longest summers. 
• Cyclades & Aegean Islands: Breezy summers, mild winters and comfortable autumns. 
• Mainland South (Athens, Peloponnese): Hot summers, gentle winters, reliable sunshine.
• Northern Mainland: Hotter summers, cooler winters and more seasonal contrast. 

These differences enable travellers to find the place to the taste – beach (or warm) or adventurous treks or trips during low season. 

Choosing the Best Time to Visit Greece

Greece works year-round, but the sweet spots are clear. May and September give you summer warmth without summer crowds or prices. July and August deliver the hottest seas and the busiest beaches. Winter suits anyone who wants museums without queues and mild coastal walks.

Pick the month that matches the trip you actually want, and Greece rarely disappoints.

If your dates are flexible, the shoulder months are where last minute holidays to Greece get interesting – May and late September deliver summer warmth at off-peak prices.

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