Piran weather in October

October in Piran: nice, rainy, with clean air — a great time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Piran🇸🇮 Slovenia · Adriatic Coast · Beach71
  1. 47Jan
  2. 53Feb
  3. 66Mar
  4. 73Apr
  5. 76May
  6. 88Jun
  7. 93Jul
  8. 90Aug
  9. 82Sep
  10. 71Oct
  11. 55Nov
  12. 49Dec

#7 of 12 months in Piran · #851 of 1413 destinations to visit in October · comfort 71/100 (tier B)

Days
20°C
Nights
16°C
Wet days
11
Sun
8 h
Humidity
76%
Daylight
11 h
Piran, Slovenia
Photo: Magic K · Pexels

Traveller notes on Piran in October

Notes from nearby Venice (97 km away)

Piran doesn't have its own notes for October yet — these are about Venice, close enough to share the season.

Venice's forum calls October generally kind — average highs around 19°C, often light-jacket weather with a chance of morning mist off the lagoon, cooling further and greyer by month's end. Regulars flag evenings as too cool for outdoor dining by mid-month, and note the city is never quiet but is noticeably calmer than mid-summer.
Tripadvisor community · October · 1 month ago · about Venice · Read more on Tripadvisor ↗

Other months in Piran

Piran's forum agrees the sea keeps this stretch of coast milder than inland Slovenia in January, though a windy day can still feel properly cold even with the sun out. On a clear day, several posters mentioned you can see all the way to the snow-capped Julian Alps and Dolomites from town, which is worth timing a visit around. Not every restaurant stays open through winter, and most people treat Piran as a half-day stop rather than an overnight, but light snow on the roads inland is possible once or twice a month, so build in some flexibility.
SlovenianCoastRegular · January · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Piran's summer as sunny and hot with a cooling sea breeze, part of what they call a submediterranean climate - more stable and predictable than the continental weather found inland in places like Bled. A shower or thunderstorm is always possible, but posters are clear that sustained multi-day rain is unlikely, with conditions bouncing back to sun quickly after a storm passes. July counts as peak season alongside August, so warm, mostly sunny days come paired with the year's biggest crowds.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Piran's card on the map.

Piran climate normals — October

Daytime high20°C / 68°F😎 nice
Nighttime low16°C / 60°F
Feels like (high)20°C / 68°F
Sea temperature22°C / 71°F🌊 fresh
Rainfall137 mm / 5.4 in🌧 rainy
Rainy days11 days
Humidity76%💦 very humid
Dew point11°C / 52°F
Sunshine8 h/day
Daylight10.9 h
Wind16 km/h / 10 mph
Air quality (US AQI)46🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Piran in October

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.

Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Piran'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).

Fair weatherPiran's weather peaks June–August, best around July.

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Best weatherFair weatherToughest weather

Nearby, and something's on

Within 300 km of Piran — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Piran?

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Piran in October — FAQ

Is October a good time to visit Piran?
October in Piran: nice, rainy, with clean air — a great time to visit. It ranks #7 of 12 months for Piran on SeasonMap's comfort score (71/100).
What is the weather like in Piran in October?
In October, Piran averages a daily high of 20.2°C and a low of 15.6°C, with about 137.4 mm of rain over roughly 10.6 rainy days.
What is the air quality in Piran in October?
Piran has a mean US Air Quality Index of about 46 in October.

Within 300 km: Ljubljana's Open Kitchen food market around 15 Mar – 31 Oct, and Venice's Biennale on 9 May – 22 Nov.