Kassandra, Halkidiki weather by month
A monthly table of air and sea temperatures, sunshine and rain, and the best time to visit Kassandra.
- Swimming season: June to September, with the sea at about 22–25°C.
- July and August are hottest, up to about 33°C by day.
- September and June are best: a warm sea and fewer crowds.
For a warm sea without the August peak, plan your Kassandra holiday for June or September.
What is the weather like in Kassandra?
Kassandra is the western "finger" of the Halkidiki peninsula and the closest to Thessaloniki. It has a Mediterranean climate: hot, dry summers and cooler, wetter winters. The main swimming season runs from June to September, and in October the sea is still pleasant if you don't mind slightly cooler water.
Kassandra weather by month
The figures come from the tourism site visit-halkidiki.gr and cover Halkidiki as a whole; Kassandra, as part of Halkidiki, behaves similarly.
| Month | Air (°C) | Sea (°C) | Sun hours/day | Rain days |
|---|---|---|---|---|
| January | 9 | 12 | 4 | 9 |
| February | 9 | 11 | 5 | 9 |
| March | 13 | 15 | 6 | 8 |
| April | 18 | 16 | 7 | 7 |
| May | 23 | 18 | 9 | 5 |
| June | 27 | 22 | 12 | 2 |
| July | 31 | 24 | 12 | 1 |
| August | 33 | 25 | 11 | 4 |
| September | 26 | 24 | 8 | 4 |
| October | 20 | 22 | 7 | 6 |
| November | 14 | 19 | 6 | 9 |
| December | 10 | 15 | 5 | 12 |
*Source: visit-halkidiki.gr. The site labels the air figure "average temperature", but the values look mostly like daytime temperatures; nights are cooler.*
When is the best time to visit Kassandra?
- June: warm (about 27°C), 12 hours of sun a day and a sea of about 22°C. Less crowded than July and August.
- July and August: peak season. The hottest air (31–33°C) and warmest sea (24–25°C). Beaches and villages are full and prices are higher.
- September: probably the best month: the sea is still about 24°C, the air is milder (about 26°C) and there are fewer people.
- May and October: good for walks and a quiet break. The sea is cooler, about 18–22°C, and some hotels open or close for the season.
- November to March: cooler and wetter; most beach hotels are closed.
When can you swim in Kassandra?
According to the table, the sea reaches 22°C in June and stays around 22–25°C until October. In May it is about 18°C, rather cool for those used to the eastern Mediterranean.
Seasonal tips
- Summer: bring a hat and sunscreen, and choose beaches with shade or umbrellas at midday.
- Autumn: check the hotel is open, especially from mid-October.
- Live forecast: see our weather page and the Halkidiki page.
More in our complete Halkidiki guide, Halkidiki beaches guide, where to stay in Halkidiki and Halkidiki with kids.
FAQ
What is the weather in Kassandra in August? Very hot: around 33°C by day, a sea of about 25°C and almost no rain.
When is the sea warmest in Kassandra? In July and August, around 24–25°C. In September it is still about 24°C.
Can you visit Kassandra in October? Yes, especially early in the month. The air is about 20°C and the sea about 22°C, but some hotels are already closing for the season.
When is the best time to go to Kassandra? September and June: a warm sea, pleasant weather and fewer crowds than July and August.
