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Weather & Climate in Ilirska Bistrica, Slovenia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ilirska Bistrica experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 33°F in January while summers reach 65°F in July. The area gets 225 sunny days per year, above the national average. Annual precipitation totals 61.3 inches (wetter than the 38-inch national average). The area receives 13.9 inches of snow annually. The city sits at an elevation of 1,371 feet.
Temperature
33°F Jan (1°C)
65°F Jul (18°C)
| Annual Average | 48.6°F |
| 10% below US avg | |
| January Average | 33°F (1°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 225 days/yr |
Geography
| Elevation | 1,371 ft (418 m) |
| Area | 185.3 sq mi (480.0 km²) |
| Population Density | 25/sq mi |
| Coordinates | 45.5676°N, 14.2457°W |
| Timezone | Europe/Ljubljana |
Precipitation & Snow
Air Quality
Earthquake History
1,077 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Apr 12, 1998 | 5 km E of Kobarid, Slovenia | M5.6 | 88 km | 10 km |
| Mar 22, 2020 | 5 km E of Gornja Bistra, Croatia | M5.3 | 139 km | 10 km |
| Jul 12, 2004 | 7 km NE of Kobarid, Slovenia | M5.2 | 94 km | 8 km |
| Mar 13, 1998 | 4 km NW of Ilirska Bistrica, Slovenia | M5.2 | 5 km | 10 km |
| May 29, 1993 | 1 km SE of ?rnomelj, Slovenia | M5.1 | 75 km | 15 km |
| Feb 5, 2007 | 11 km ESE of Novi Vinodolski, Croatia | M4.9 | 74 km | 10 km |
| May 22, 1995 | 6 km NNW of Ilirska Bistrica, Slovenia | M4.9 | 6 km | 27 km |
| Sep 3, 1990 | 1 km ENE of Donja Bistra, Croatia | M4.8 | 132 km | 20 km |
| Feb 16, 2023 | 3 km W of Baška, Croatia | M4.7 | 76 km | 10 km |
| Feb 14, 2002 | 4 km SSW of Moggio di Sotto, Italy | M4.7 | 122 km | 10 km |
| Nov 11, 1990 | 5 km ENE of Cerkno, Slovenia | M4.7 | 65 km | 22 km |
| Jun 2, 2002 | 6 km SSE of Pivka, Slovenia | M4.6 | 7 km | 10 km |
| Jan 17, 2003 | 4 km SSE of Punat, Croatia | M4.6 | 73 km | 10 km |
| May 6, 1998 | 6 km NNW of Tolmin, Slovenia | M4.6 | 85 km | 10 km |
| Mar 22, 2020 | 6 km E of Gornja Bistra, Croatia | M4.6 | 140 km | 10 km |
| Apr 22, 2014 | 7 km SE of Pivka, Slovenia | M4.5 | 7 km | 5 km |
| May 28, 1998 | 3 km WSW of Osoppo, Italy | M4.5 | 120 km | 10 km |
| Oct 5, 1991 | 0 km W of Nimis, Italy | M4.5 | 104 km | 10 km |
| May 13, 1999 | 2 km NW of Clodig, Italy | M4.4 | 85 km | 10 km |
| Jan 30, 2015 | 4 km W of Moggio di Sotto, Italy | M4.4 | 127 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 4.3 in | Coldest |
| February | 35°F (2°C) | 3.7 in | Driest |
| March | 39°F (4°C) | 4.5 in | |
| April | 45°F (7°C) | 5.0 in | |
| May | 54°F (12°C) | 4.6 in | |
| June | 60°F (16°C) | 5.7 in | |
| July | 65°F (18°C) | 3.9 in | |
| August | 66°F (19°C) | 4.7 in | Warmest |
| September | 59°F (15°C) | 5.4 in | |
| October | 51°F (11°C) | 6.5 in | |
| November | 42°F (6°C) | 7.1 in | Wettest |
| December | 35°F (2°C) | 5.9 in |
Ilirska Bistrica has a seasonal temperature swing of 33°F / from 33°F in January to 66°F in August. Total annual precipitation is 61.4 inches, with November being the wettest month (7.1") and February the driest (3.7").