Climate and monthly weather forecast
Chalcis, Greece


The climate of Chalcis

Chalcis, Greece finds its climatic identity in the Köppen classification as a Mediterranean, hot summer region, designated as Csa. Bearing the imprint of the Aegean Sea, Chalcis experiences a warm, dry summer and a mild, rainy winter. Natural topographical features such as mountains and sea, contribute substantially to the microclimate of the area.

Month by month, the landscape of Chalcis shifts beneath the influence of climatic forces. The oscillation of temperature from the coldest month of January with 6.5°C (43.7°F) to a sweltering 32.6°C (90.7°F) in July lays testament to the classic Mediterranean climate prevalent in the region. The alternation of day length is quite evident, as the shortest daylight of 9.5 hours in December stretches to the maximum of 14.8 hours in June.

Depicting the maritime climate, the sea temperature portrays a steady incline from the 15.2°C (59.4°F) in March, escalating to a welcoming 26.3°C (79.3°F) in August, only to ebb back to the chill of December with 16.4°C (61.5°F). Piecing it all together, Chalcis carries the vestiges of a typical hot, dry summer and mild winter, coupled with a noticeable differentiation in nature’s clock across the months.

The best time to visit Chalcis

The period from late spring to early summer between May and June would be an ideal time for a visit to Chalcis. During this time frame, the average high temperatures tend to range from 25.3°C (77.5°F) to 29.8°C (85.6°F), offering a pleasingly warm weather perfect for outdoor activities. The daylight hours soar up to 14.3 hours and 14.8 hours, providing ample opportunities to explore the quaint city and its surroundings.

With the sea temperature escalating from a pleasant 18.3°C (64.9°F) in May to 22.7°C (72.9°F) in June, a delightful Mediterranean beach experience awaits visitors in Chalcis, along with a cavalcade of local festivals and cultural events that peak during this season.

The worst time to visit Chalcis

The winter months from December to February might not be the best time for a visit to Chalcis. The drop in temperature from 8.3°C (46.9°F) to 6.5°C (43.7°F) teamed with reduced daylight hours, from 9.5 hours to below 10 hours, limits outdoor activities. Moreover, the sea temperature sinks to its annual minimum of 14.9°C (58.8°F) to 16.4°C (61.5°F), making it less inviting for water-based recreational activities.

Spring weather in Chalci

Spring in Chalcis, spanning from March to May, bears the delicate transition from cool winter to warm summer. The temperatures display a noticeable rise from 8.4°C (47.1°F) to 15.4°C (59.7°F) on the lower end, and from 16°C (60.8°F) to 25.3°C (77.5°F) on the higher end. Daylight grew steadily from 12 hours in March to an impressive 14.3 hours by May. The sea temperature also experiences a revival from a mild 15.2°C (59.4°F) in March to a pleasant 18.3°C (64.9°F) in May, creating a conducive environment for marine leisure.

Summer weather in Chalcis

From June to August, Chalcis basks in hot Mediterranean summer with temperatures peaking from 20.1°C (68.2°F) to 22.5°C (72.5°F) at lowest, and from 29.8°C (85.6°F) to an intense 32.6°C (90.7°F) at its highest. The sunniest season boasts around 14.8 hours of daylight, and the sea temperature climbs to a balmy 26.3°C (79.3°F) by August, making it ideal for beach activities and water sports.

Autumn weather in Chalcis

Autumn in Chalcis from September to November sees a gradual fall in temperature, ranging from 19.2°C (66.6°F) to 11.4°C (52.5°F) at the lower end, and from 28.9°C (84°F) to 18.6°C (65.5°F) on the higher end. Daylight lessens gradually from 12.4 hours to 10.1 hours. The sea temperature steps down from 24.8°C (76.6°F) in September to a cooler 18.8°C (65.8°F) by November. This transition season offers a change in scenery and a slower pace of life.

Winter weather in Chalcis

Winter from December to February, sees temperatures dipping further from 8.3°C (46.9°F) to 6.5°C (43.7°F) at lowest, and from 14.7°C (58.5°F) to 12.9°C (55.2°F) at highest. With the shortest daylight hours of the year, at 9.5 hours in December to just slightly more at 10.8 hours in February, the days feel more succinct. The sea cools down too, from 16.4°C (61.5°F) to 14.9°C (58.8°F) over the winter months. This time of year offers a quieter, more serene side of Chalcis.

Weather in January

The start of the year finds Chalcis under the cool grasp of winter. The chill in the air is not severe but there is a marked need for warmer attire. With the sea temperatures at 15.4°C (59.7°F), seaside activities seem less inviting. Weather in January »

Weather in February

February is the month when Chalcis experiences a slight rise in temperature, creating anticipation for the arrival of spring. Winter is still very much present, with the cold breezes ccontinuing to sweep over the city. There’s a little more daylight to enjoy, with the evenings drawing out slowly as the city moves closer to spring. Weather in February »

Weather in March

The arrival of March signifies the transition of Chalcis from the last vestiges of winter to the welcome onset of spring. The city begins to bloom under the influence of a kinder sun. Evenings are pleasant, often marked by picturesque sunsets, hinting at the balmy nights to come. Weather in March »

Weather in April

April in Chalcis is characterized by a definite shift in weather, heralding the promise of more hospitable outdoor conditions. The transformation of the city continues at full swing, with flower beds pulsating in radiant colors and the sea turning a deeper shade of blue. Weather in April »

Weather in May

Chalcis embraces the full bloom of spring in May, the city buzzing with renewed energy and vibrancy. Traces of winter's chill are long gone and what's left is a comfortable heat which is neither too hot not too cold. The duration of daylight extends to a generous 14.3 hours, signaling the ramp up to long, beautiful summer days. Weather in May »

Weather in June

June in Chalcis marks the highly anticipated advent of summer, with sun-soaked days and balmy evenings. The city is at its most vibrant, with numerous outdoor activities and events taking place across its expanse. It’s not just the temperatures that are at their annual high of 29.8°C (85.6°F), but the spirits of locals and tourists alike. Weather in June »

Weather in July

July is when summer in Chalcis is at its peak and the city pulses with the fervor of the season. The golden sun casts long shadows and the nights taste of the sea breeze. The heat is intense throughout the days with a peak temperature of 32.6°C (90.7°F), but the sea temperature offers a cool balance at 25.7°C (78.3°F). Weather in July »

Weather in August

August sees the climax of summer in Chalcis, with the city humming under the spell of the sun. With the sea temperature at its warmest 26.3°C (79.3°F), it is the favored destination for locals and tourists alike. While there is a slight dip in temperature from the previous month, it provides a welcome respite. Weather in August »

Weather in September

September signals a subtle change in the weather as Chalcis begins its transition from the heat of summer towards the cool of autumn. The city starts to mellow, the summer crowds dissolve, and there’s a tranquil beauty in the air. Weather in September »

Weather in October

October in Chalcis brings with it the noticeable arrival of autumn. The city begins to cool gradually, with the first hints of autumn colors appearing. Marked by the earlier arrival of sunset and the pleasant chill in the evening air, there's a clear shift in weather. Weather in October »

Weather in November

Come November, the autumn in Chalcis has firmly set in, its grip evident in the bare trees and the swirl of fallen leaves in the wind. There's a marked change in weather, with a perceptible reduction in daylight hours and temperatures falling to a much cooler range. Weather in November »

Weather in December

December ushers in the Chalcis winter, painting a quaint and charming picture. The month has a serene beauty as the city is wrapped up in a soft chill, signaling the arrival of the festive season. Chalcis sees cooler temperatures, with the sea also registering a considerable decrease in temperature. Weather in December »

Frequently asked questions

What month is the coldest in Chalcis?

Chalcis's coldest month, January, registers temperatures that range from a high of 12.9°C (55.2°F) to a low of 6.5°C (43.7°F).

What month is the sea coldest in Chalcis?

February is the month with the coldest seawater, with an average sea temperature of 14.9°C (58.8°F).

When are the longest days in Chalcis?

June has the longest days of the year in Chalcis, with an average of 14h and 48min of daylight.

What part of the year is the hottest in Chalcis?

Chalcis's July weather, marked by an average high temperature of 32.6°C (90.7°F) and an average low temperature of 22.5°C (72.5°F), is the warmest in the year.

What month is the sea warmest in Chalcis?

The month with the warmest seawater is August, with an average sea temperature of 26.3°C (79.3°F).

When is Daylight Saving Time (DST) in Chalcis?

On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, and the time zone changes from EEST to EET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 03:00, and the time zone reverts from EET to EEST.

What is the month with the shortest days in Chalcis?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

Average temperature
Chalcis, Greece

Average temperature - Chalcis, Greece

The warmest month (with the highest average high temperature) is July (32.6°C).
The month with the lowest average high temperature is January (12.9°C).

The month with the highest average low temperature is July (22.5°C).
The coldest month (with the lowest average low temperature) is January (6.5°C).


Average sea temperature
Chalcis, Greece

Average sea temperature - Chalcis, Greece

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (14.9°C).


Average daylight
Chalcis, Greece

Average daylight - Chalcis, Greece

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).


Chalcis, Greece

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