Slovenia weather in May
Slovenia in May averages 16°C (61°F), 114 mm of rain and 7.6 hours of sun a day.
Of the twelve months in Slovenia, May is the fifth warmest, the sixth driest and the fourth sunniest.

- Average temp
- 16°C (61°F)
11–22°C · 51–71°F
- Rainfall
- 114 mm
Showers likely
- Sunshine
- 7.6 h
hours per day
What is Slovenia like in May?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Slovenia in May?
A light rain jacket
About 114 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 11°C (51°F).
May compared with April and June
May in Slovenia is 4.5°C warmer than April and 18 mm wetter than it, which averages 12°C (53°F).
May in Slovenia is 3.8°C cooler than June and 12 mm drier than it, which averages 20°C (68°F).
Daylight in Slovenia in May
On 15 May the sun is up for 14 hours 59 minutes in Slovenia, rising about 05:27 and setting about 20:26 local time.
May ends 1 hour 8 minutes longer than it begins, so the last week of the month is a different length of day from the first.
That is 46 minutes short of June, the longest-lit month here.
Travel guides for Slovenia
What to read before you book.
Slovenia weather by month
TemperatureRainfall
How May compares with the rest of the year
May is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 1°C / 34°F | 67 mm |
| February | 3°C / 37°F | 85 mm |
| March | 7°C / 45°F | 82 mm |
| April | 12°C / 53°F | 96 mm |
| May | 16°C / 61°F | 114 mm |
| June | 20°C / 68°F | 126 mm |
| July | 22°C / 72°F | 121 mm |
| August | 22°C / 71°F | 124 mm |
| September | 17°C / 62°F | 159 mm |
| October | 12°C / 54°F | 150 mm |
| November | 7°C / 44°F | 138 mm |
| December | 2°C / 35°F | 105 mm |
Similar weather in May
Other destinations whose May averages sit close to this one.
Check another month
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FAQs about Slovenia in May
May climate averages for Slovenia, 1991–2020.
Slovenia averages 16°C (61°F) in May, ranging from about 11°C (51°F) at night to 22°C (71°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 114 mm falls across May, enough to need a light jacket but not enough to reshape a trip.
No. May averages 16°C (61°F) against 20°C (68°F) in June — 3.8°C cooler.
May is 4.5°C warmer than April, and 18 mm wetter.
Yes. May falls inside the most comfortable stretch of the year here, April to September, on temperature and rainfall together.
About 7.6 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what May is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 14 hours 59 minutes of daylight in mid-May, against 15 hours 45 minutes in June and 8 hours 39 minutes in December.
On 15 May, sunrise is about 05:27 and sunset about 20:26 local time. Both shift across the month — the month ends 1 hour 8 minutes longer than it starts.


