Halkidiki weather by month

When to go to Halkidiki

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August. December is the wettest month (79 mm, about 9 rainy days) and June the driest (29 mm). The sea is warmest in August at 26.7°C and coolest in February at 13.5°C.

Getting there

A direct flight from London Gatwick to Thessaloniki Macedonia International Airport (SKG, 41 km from Néa Moudhaniá) takes roughly 3 h 30 min - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Athens.

Records and extremes, 1991-2020

The hottest day recorded in Halkidiki between 1991 and 2020 reached 41.4°C on 25 July 2007; the coldest fell to -7.7°C on 8 February 2006. In August one day in ten tops 31.1°C and about 25% of days pass 30°C; in January one night in ten drops to 1.8°C or below. The wettest single month of the period was December 2002 with 239 mm, against a December average of 79 mm.

Winter and spring: cool starts, warmer days by May

December to February is better suited to travellers who do not need beach weather. Daytime averages sit at 10°C in January and 11°C in December and February, with chilly evenings making a warm layer essential. Rain can interrupt outdoor plans, so pack a waterproof rather than relying on an umbrella alone. March brings a modest lift to 13°C but still averages 9 rain days; it is not yet a dependable warm-weather choice. April feels milder at 16°C, though the sea remains cold at 15°C. May is the turning point for comfortable days outside, averaging 21°C by day and 16°C at night. Its 19°C sea may suit a brisk dip, but travellers who want leisurely swims will probably prefer to wait until summer.

Summer: the strongest choice for swimming and sunshine

June offers warm days without quite reaching the heat of July and August. Its 26°C daytime average and 23°C sea make it a good choice if swimming matters but you prefer slightly cooler conditions on land. July rises to 28°C and has the longest sunshine average at 12 hours a day. August is hottest, with days around 29°C and sea temperatures of 27°C. Plan more active time for mornings and leave room for shade at midday. Nights average 23°C in July and August, so light clothing remains useful after dark. Rain is less frequent than in the cooler seasons, but summer is not completely dry.

Autumn: warm water lingers as the days cool

September is a good compromise for travellers who want warm water and gentler daytime heat: both air and sea average 24°C. Nights remain mild at 20°C, although rain becomes more frequent than in August. October can still work for a weather-flexible break, with daytime averages of 20°C and a sea temperature of 21°C. The catch is less sunshine and 8 rain days, so avoid building every day around the beach. By November, the daytime average falls to 15°C and nights to 11°C. Bring layers and a waterproof, and treat any swimming as optional rather than the reason to travel. For warmth-led holidays, September is the stronger autumn choice.