Weather in Slovenia in September

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temperature
Temp

15° C

average

rain
Rain

65 mm

per month

sun
Sun

52 %

chance

humidity
Humidity

84 %

average

Weather in Slovenia in September

In September, Slovenia experiences mild and pleasant weather, making it an ideal time for outdoor exploration. Travellers can expect comfortable temperatures, moderate rainfall, and ample sunshine throughout the month. Humidity is usually manageable, contributing to an enjoyable outdoor experience. This month is particularly suitable for engaging in outdoor activities and enjoying the beauty of Slovenia’s landscapes.

September Climate Overview

  • Average Temperature: 12°C to 23°C
  • Rainfall: 100mm
  • Sunshine Hours: 7 hours per day
  • Humidity: 75%
  • Wind Speed: 8 km/h

What to Expect in September

Daytime Conditions

During the day, temperatures typically range from a comfortable 18°C to 23°C. With a fair amount of sunshine and moderate humidity, the weather feels warm but not overwhelming. Ideal for sightseeing and spending time outdoors.

Rainfall Patterns

Rainfall in September is moderate, with occasional showers that are usually not prolonged. These showers can be refreshing and often do not disrupt travel plans, though carrying an umbrella is advisable.

Evening Conditions

Evenings in Slovenia during September cool down to around 12°C to 17°C. There might be a gentle breeze, and humidity drops slightly, making it comfortable for evening activities and strolls.

Best Activities in Slovenia in September

  • Outdoor Activities: September is excellent for hiking in places like Triglav National Park or exploring the Soča Valley and its breathtaking views.
  • Seasonal Highlights: This month marks the grape harvest season, ideal for experiencing local vineyards and wine tasting tours.
  • Water-based or Nature-based Activities: The mild weather supports boating or kayaking on Slovenia’s lakes and rivers.

What to Pack for September

  • Appropriate clothing for daytime and evening temperatures
  • Protection from sun or rain (hat, sunscreen, umbrella, etc.)
  • Footwear suitable for local terrain (e.g., walking, hiking, city streets)
  • Reusable water bottle

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