Postojna Weather in July
Postojna in July averages 26°C (79°F) during the day and 15°C (59°F) at night. This is part of the summer season, and quite a bit of rainfall is expected this month.
Rainfall in Postojna in July
Analyzing past climate data, one can expect approximately 14 days of rain, averaging 120 mm (4.7 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Postojna in July
Expect highs of 26°C (79°F) in Postojna in July, with nights dropping to around 15°C (59°F). July is part of summer. This kind of day-to-night contrast is typical for this time of year. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.
Sunshine in Postojna in July
With approximately 290 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Postojna's climate page.
Postojna Temperature in July
Min Temperature
15°C (59°F)
Max Temperature
26°C (79°F)
Chance of Rain
47%
Precipitation
120 mm (4.7 in)
Rainy days
14 days
Humidity
63% *
Sunshine
290 hours *
Percentage Sunshine
63% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Postojna typically stay consistent throughout July, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows around 16°C (61°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Postojna in July
Browse day-by-day weather records for Postojna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Postojna historical weather extremes in July
Based on weather observations in Postojna between 1976 and 2025, these are the recorded extremes during July.
- The warmest day in July was on July 23, 1994, with a maximum of 38°C (100°F).
- Postojna experienced its chilliest July day on July 10, 2014, reaching only 14°C (57°F).
- Nighttime temperatures dropped to 6°C (43°F) on July 17, 2000, marking the coldest July night on record.
Best Places in Slovenia in July
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in July →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Postojna in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Postojna in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Postojna's climate page.
Temperature Rainfall Sunshine Humidity
See the full Postojna climate overview or explore weather in Slovenia.
