Postojna, Municipality of Postojna Climate
Slovenia
Pop. 9,605 Elev. 548 m / 1,798 ft
TZ: Europe/Ljubljana (UTC+2) ·
Postojna has mild summers with average highs of 79°F (26°C) in June, and cold winters averaging 31°F (-1°C) in February. Rain falls on about 83 days per year (62.1 in / 1579 mm total), with snow on 3 days and 21 in (540 mm) of annual accumulation. The city averages 112 sunny days per year and around 55 thunderstorm days. Ocean water temperatures reach 81°F (27°C) in summer.
| Temperature | 26°C (79°F) high | -1°C (31°F) low |
| Feels like | -3°C (26°F) low | |
| Rain | 83 days | 1579 mm (62.1 in) /yr |
| Snow | 3 days | 540 mm (21.3 in) /yr |
| Sky | 112 sunny | 55 stormy |
| Wind | 0.8 m/s (1.9 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: May, Jun, Aug
Sky & Air by Month
Cloud cover (%)
73
Jan 68
Feb 59
Mar 56
Apr 59
May 36
Jun 56
Jul 46
Aug 63
Sep 57
Oct 67
Nov 72
Dec Humidity (%)
83
Jan 79
Feb 71
Mar 67
Apr 72
May 62
Jun 72
Jul 72
Aug 83
Sep 82
Oct 84
Nov 88
Dec Weather Days by Month
Water Temperatures
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Nearby
Commercial airport 53 km Ljubljana Jože Pučnik Airport (LJU)
Ski resort 45 km Stari Vrh
National park 47 km Nacionalni park Risnjak
Mountain peak
(1,694 m) 27 km Mali Snežnik
Hospital 0 km Zdravstveni dom
Hiking trail 0 km 148 ~ Pot kurirjev in vezistov NOV Slovenije
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 6°C 42°F | 1°C 33°F | 132 mm 5.2 in | 64 mm2.5 in | 5 |
| February | 5°C 41°F | -1°C 31°F | 59 mm 2.3 in | 157 mm6.2 in | 7 |
| March | 11°C 52°F | 3°C 38°F | 247 mm 9.7 in | 0 mm0.0 in | 10 |
| April | 15°C 60°F | 6°C 43°F | 99 mm 3.9 in | 0 mm0.0 in | 12 |
| May | 17°C 63°F | 8°C 46°F | 167 mm 6.6 in | — | 8 |
| June | 26°C 79°F | 15°C 58°F | 18 mm 0.7 in | — | 19 |
| July | 24°C 75°F | 14°C 57°F | 240 mm 9.4 in | — | 8 |
| August | 24°C 76°F | 14°C 57°F | 125 mm 4.9 in | — | 14 |
| September | 20°C 68°F | 12°C 53°F | 183 mm 7.2 in | — | 6 |
| October | 14°C 57°F | 5°C 42°F | 140 mm 5.5 in | — | 10 |
| November | 9°C 48°F | 3°C 37°F | 148 mm 5.8 in | 192 mm7.6 in | 7 |
| December | 6°C 43°F | 1°C 34°F | 21 mm 0.8 in | 126 mm5.0 in | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 5 | 2 |
| February | 7 | 0 |
| March | 10 | 9 |
| April | 12 | 5 |
| May | 8 | 5 |
| June | 19 | 1 |
| July | 8 | 11 |
| August | 14 | 6 |
| September | 6 | 9 |
| October | 10 | 3 |
| November | 7 | 4 |
| December | 6 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 10°C 51°F | 1°C 34°F |
| February | 10°C 50°F | 2°C 35°F |
| March | 12°C 54°F | 6°C 42°F |
| April | 17°C 62°F | 11°C 51°F |
| May | 21°C 70°F | 15°C 58°F |
| June | 27°C 80°F | 21°C 70°F |
| July | 27°C 81°F | 22°C 72°F |
| August | 26°C 78°F | 21°C 70°F |
| September | 25°C 76°F | 19°C 66°F |
| October | 21°C 71°F | 11°C 52°F |
| November | 17°C 62°F | 8°C 46°F |
| December | 13°C 56°F | 3°C 37°F |