SeasonMapHalkidiki (Chalkidiki) weather in September
Greece
September in Halkidiki: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Halkidiki · #80 of 1383 destinations to visit in September · comfort 93/100 (tier S)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Halkidiki in September
Other months in Halkidiki
Halkidiki's forum calls August reliably hot, sometimes well into the 30s°C, with sunny conditions close to guaranteed and air conditioning strongly recommended for accommodation. Regulars flag it as the busiest, noisiest month locally, and note that while the odd unlucky stretch of cloud and thunderstorms can turn up, it's genuinely the exception rather than the rule for August here.
Add your own note from Halkidiki's card on the map.
Halkidiki climate normals — September
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Feels like (high) | 26°C / 79°F | |
| Sea temperature | 25°C / 76°F | 🙂 pleasant |
| Rainfall | 34 mm / 1.3 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 67% | 💧 humid |
| Dew point | 16°C / 60°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 12.4 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Halkidiki in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Greece, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Halkidiki's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherHalkidiki's weather peaks July–September, best around August.
Best weatherFair weatherToughest weather
What's on in Halkidiki in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Mount Athos permits
1 Jan – 31 DecBook earlyClosuresThe monastic peninsula admits a small fixed number of men a day on a permit arranged months ahead, and no women at all. Everyone else sees it from a boat out of Ouranoupoli. Source ↗
- Season
Sea warm enough to swim
1 Jun – 15 Oct · usuallyThree sheltered peninsulas mean the water warms early and there is always a lee shore. Sithonia's coves hold their heat longest into October.
- Hazard
Wildfire season
15 Jun – 30 SepSmoke seasonThe pine forest that runs down to the beaches is what makes this coast and what burns on it. Fire-service risk maps go red on windy days and access roads close with them. Source ↗
Nearby, and something's on
Within 300 km of Halkidiki — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Halkidiki?
Halkidiki in September — FAQ
- Is September a good time to visit Halkidiki?
- September in Halkidiki: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Halkidiki on SeasonMap's comfort score (93/100).
- What is the weather like in Halkidiki in September?
- In September, Halkidiki averages a daily high of 24.2°C and a low of 20.7°C, with about 34 mm of rain over roughly 5.1 rainy days.
- What is the air quality in Halkidiki in September?
- Halkidiki has a mean US Air Quality Index of about 47 in September.
Other months in Halkidiki
Compare Halkidiki in September
Warmer or cooler than Halkidiki in September
Similar destinations in Southern Europe — September
Within 300 km: Skiathos' Sea warm enough to swim around 10 Jun – 5 Oct, and Athens' Sea warm enough to swim around 1 Jun – 31 Oct.