Slovenia · May
Low seasonSlovenia · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 5° (41°)-3– (27–)12 (54) | 7° (45°)-1– (30–)15 (59) | 12° (54°)3– (37–)21 (70) | 17° (63°)7– (45–)25 (77) | 21° (70°)12– (54–)29 (84) | 26° (79°)17– (63–)33 (91) | 28° (82°)19– (66–)34 (93) | 28° (82°)19– (66–)34 (93) | 22° (72°)13– (55–)30 (86) | 17° (63°)8– (46–)23 (73) | 10° (50°)2– (36–)18 (64) | 5° (41°)-2– (28–)13 (55) |
Ø night, range from coldest to warmest nightØ nightrange | -3° (27°)-10– (14–)5 (41) | -1° (30°)-9– (16–)5 (41) | 1° (34°)-6– (21–)8 (46) | 5° (41°)-2– (28–)12 (54) | 10° (50°)4– (39–)15 (59) | 14° (57°)9– (48–)19 (66) | 16° (61°)10– (50–)20 (68) | 15° (59°)8– (46–)20 (68) | 11° (52°)4– (39–)17 (63) | 7° (45°)-1– (30–)14 (57) | 3° (37°)-4– (25–)10 (50) | -1° (30°)-8– (18–)5 (41) |
☀️Sunshine | 2h UV 2 | 3h UV 3 | 6h UV 5 | 7h UV 7 | 7h UV 7 | 8h UV 8 | 8h UV 8 | 8h UV 7 | 6h UV 6 | 4h UV 4 | 2h UV 2 | 2h UV 2 |
🌧Rain Days | 6d70mm (2.8") | 7d84mm (3.3") | 6d81mm (3.2") | 7d89mm (3.5") | 9d122mm (4.8") | 8d104mm (4.1") | 8d110mm (4.3") | 7d127mm (5.0") | 8d176mm (6.9") | 6d107mm (4.2") | 8d121mm (4.8") | 7d105mm (4.1") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Still off-season — flights and hotels significantly cheaper than in June.
May in Slovenia offers acceptable conditions — but it's not among the top travel months. Those looking for ideal weather should visit in June and July.
Daytime highs average 21°C (70°F), cooling to 10°C (50°F) at night (daily average: 16°C (61°F)). Peaks reach around 29°C (84°F), the coldest nights around 4°C (39°F). The sun shines an average of 7 hours per day; there are 9 rain days with 122 mm (4.8 in) total.
A jacket for cool evenings should not be left behind. Sightseeing and excursions can be enjoyed comfortably at this time of year.
Spring brings blossom, strong greens and cool mornings. In the Julian Alps snow lies for a long time above 1,500 metres (4,921 ft), while in Ljubljana people already sit outdoors. Showers become frequent in May — which is when the waterfalls carry the most water.
Packing list for Slovenia in May
- Long-sleeved shirts and light trousers
- Light jacket
- Jumper or fleece
- Sunscreen
- Sunglasses
- Light umbrella or rain poncho
- Travel first-aid kit
Frequently Asked Questions
- Is May a good time to visit Slovenia?
- May is not an optimal month for Slovenia (Score: 52/100), but it is manageable. For better conditions, consider June and July.
- How warm is it in Slovenia in May?
- In May, Slovenia sees daily highs of 21°C (70°F). Nights cool to 10°C (50°F), with a daily average of 16°C (61°F). Peaks reach around 29°C (84°F), the coldest nights around 4°C (39°F).
- How much rain falls in Slovenia in May?
- In May, Slovenia receives an average of 122 mm (4.8 in) of rain over 9 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Slovenia get in May?
- Slovenia averages 7 sunshine hours per day in May — above the annual average.
