Weather in Halkidiki in August

How August compares

August is the 1st warmest month of the year in Halkidiki and ranks 71st of 134 destinations we compare for August - see where else is hot in August. Within Greece it is 22nd of 44 (Greece in August). Against London's average high of 21.4°C in August, Halkidiki is 7.2°C warmer by day and 9.9°C warmer at night.

Daytime and night-time in August

The typical August day in Halkidiki peaks at 28.6°C, but that is an average: the warmest 10% of days reach 31.1°C or more. About 94% of days top 25°C and 1 in 4 pass 30°C. Nights average 23.4°C; one night in ten drops to 21.3°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 38.6°C (1993-08-26) and the coldest night 16.7°C (1995-08-30).

Rain in August

Some rain (4-8 rainy days): about 4 days with 1 mm or more, 32 mm in total. Year to year it varies a lot - the wettest August was 1991 with 95 mm, the driest 1998 with 2 mm. Humidity averages 65%.

Sea temperature in August

The sea averages 26.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.0°C to 27.5°C. This is the warmest the sea gets here all year.

Sunshine and daylight

Around 11.3 hours of sunshine a day (estimated from cloud cover), 13.6 hours of daylight: the sun rises about 06:38 and sets about 20:25 local time in mid-August. Average cloud cover is 17%.

Is August a good time to visit Halkidiki?

Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Halkidiki on our scoring are August, July, June; months averaging 25°C or more: Jun, Jul, Aug.

Expect heat that lasts into the evening

August is Halkidiki's warmest month, so choose it because you like heat, not because you hope for mild sightseeing weather. Days reach 25°C on 94% of occasions, while 25% reach 30°C. That makes shade and a slower pace around midday sensible, especially if you plan to spend much of the day outdoors. Loose clothing, sun protection and somewhere cool to sleep deserve priority when packing and choosing accommodation. The average night low of 23.4°C means evenings are warm rather than a reliable break from the heat. If warm bedrooms disturb your sleep, check the cooling arrangements before you book.

Warm water makes swimming a strong reason to go

The sea is a strong argument for an August trip: at an average of 26.7°C, it is comfortably in swimming territory rather than something to brace yourself for. The year-to-year range of 26°C to 28°C also points to reliably warm water. This suits travellers who want swimming to be a regular part of the holiday, although the sea may feel less cooling than you expect on a hot afternoon. With about 11.3 hours of sunshine within 13.6 hours of daylight, there is plenty of scope to shift outdoor time towards the morning or later afternoon rather than staying exposed through midday.

Mostly outdoor weather, with room for rain

Rain is a possibility rather than a reason to rule August out. About 4 rainy days means you should leave some flexibility in your plans, but it does not suggest a holiday built around wet-weather alternatives. Keep a light waterproof handy and avoid making every day depend on uninterrupted sunshine. Humidity averages 65%, so do not assume the warmth will always feel dry; breathable clothes are a practical choice. Overall, August suits travellers who put warm swimming and sunshine ahead of cooler walking weather. The main compromise is the persistent warmth, particularly overnight, rather than frequent rain forcing you indoors.