Postojna, Slovenia Weather

  1. Postojna, Slovenia Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Postojna over the next 12 hours
  7. Temperature and possibility of rain in Postojna in the coming days
  8. Rainfall in Postojna in the coming days
  9. Postojna Weather Summary
  10. Weather averages by month
  11. Postojna's weather
  12. Frequently asked questions
  13. Comments
Postojna, Weather
(Photo by Neven Krcmarek on Unsplash)

Current conditions

Updated:
5°C
41.0°F
°C °F

Condition: Overcast

Pressure: 944 hPa

Feel like: 2 °C

Temperature: 5°C

Cloud: 99%

Humidity: 88%

Wind: NNE - 14 km/h

Visibility: 12.02 km

Weather forecast

Sat
06 Dec
3°C / 9°C
Overcast
Sun
07 Dec
2°C / 11°C
Overcast
Mon
08 Dec
3°C / 11°C
Overcast
Tue
09 Dec
4°C / 10°C
Overcast
Wed
10 Dec
3°C / 9°C
Overcast
Hourly forecast today:
12:00 PM
3° / 5°
3° / 5°
Overcast
88% 38 km/h
13:00 PM
3° / 5°
3° / 5°
Overcast
87% 39 km/h
14:00 PM
3° / 5°
3° / 5°
Overcast
87% 39 km/h
15:00 PM
3° / 5°
3° / 5°
Overcast
88% 38 km/h
16:00 PM
3° / 5°
3° / 5°
Overcast
87% 39 km/h
17:00 PM
3° / 5°
3° / 5°
Overcast
85% 41 km/h
18:00 PM
3° / 6°
3° / 6°
Overcast
85% 43 km/h
19:00 PM
3° / 5°
3° / 5°
Overcast
87% 45 km/h
20:00 PM
4° / 5°
4° / 5°
Overcast
90% 46 km/h
21:00 PM
4° / 5°
4° / 5°
Overcast
89% 46 km/h
22:00 PM
3° / 6°
3° / 6°
Partly Cloudy
85% 46 km/h

30 Day Averages and Extremes

  • Average high 6.23°C
  • Average low 1.0°C
  • Hottest day 11°C (07 December 2025)
  • Coldest day -3°C (22 November 2025)
  • Average humidity 82.83%
  • Days with precipitation 22 days
  • Highest precipitation 92 mm (24 November 2025)

Yesterday's Data

  • Max: 6°C
  • Min: 1°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Postojna over the next 12 hours

Temperature and possibility of rain in Postojna in the coming days

Rainfall in Postojna in the coming days

Postojna Climate Summary

Postojna features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.56ºC (52.81ºF), which is about -0.24% lower than the national average for Slovenia. Annually, the city experiences approximately 209.87 millimeters (8.26 inches) of rainfall, spread across 192.55 rainy days, accounting for 52.75% of the year.

Longitude 45.7749704
Latitude 14.2133245
Yearly high temperature 14.88ºC (58.78ºF)
Yearly low temperature 5.34ºC (41.61ºF)
Hottest month June 23.85ºC (74.93ºF)
Coldest month December -0.72ºC (30.7ºF)
Yearly precip 209.87mm (8.26in)
Days with rainfall 192.55 days (52.75%)
Driest month April (76.22%)
Wettest month November (87.91%)

Weather averages by month

Month High / Low (°C) Rain
January 4.13° / -2.21° 13.18 days
February 4.86° / -2.23° 14.64 days
March 9.58° / 1.04° 14.55 days
April 14.96° / 4.61° 15.18 days
May 18.43° / 7.06° 22.45 days
June 23.85° / 10.93° 20.0 days
July 26.01° / 12.95° 21.0 days
August 26.31° / 13.36° 15.55 days
September 20.42° / 9.91° 15.27 days
October 14.87° / 6.17° 13.36 days
November 9.68° / 3.18° 14.55 days
December 5.5° / -0.72° 12.82 days

Postojna's weather

Frequently asked questions

1. What is the hottest month in Postojna?

June has the highest average monthly temperature (daily mean of 23.85ºC) and December are the coolest (daily mean of -0.72ºC).

2. What should I wear in Postojna today?

For today's cold weather in Postojna, with temperatures ranging from 4ºC to 7ºC (39.2ºF to 44.6ºF), you should wear:
- Layered clothing (such as a thermal shirt under a sweater)
- Hat and gloves, particularly for early mornings or evenings
- Closed-toe shoes or boots
- Wool or thermal socks

Temperature

Early
1°C / 2°C
Morning
2°C / 4°C
Afternoon
3°C / 5°C
Evening
4°C / 5°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 455
  • CO 195
  • NH3 0
  • NO2 2
  • O3 52
  • PM10 13
  • PM25 12
  • SO2 6
  • CH4 1,448

Sunrise / Sunset

06:29
15:18