Late spring · Weather & things to do
Piran in May
Piran warms up: highs climb to 71°F (22°C), from 63°F in April, with lows of 58°F (14°C) and about 3.5 in (89 mm) of rain.
At 84/100 for comfort (4th of 12), it's one of the best months to visit.
- Avg high
- 71°F (22°C)
- Avg low
- 58°F (14°C)
- Rain
- 3.5 in (89 mm)
- Humidity
- 73%
- Cloud cover
- 60%
- Daylight
- ~14 h 42 min
- Comfort score
- 84/100 · Great
What May feels like
Days are warm, averaging 71°F (22°C), easy weather for being outside from morning to evening.
Nights cool to an average low of 58°F (14°C).
Showers are part of the month, adding up to about 3.5 in (89 mm).
Plan around May
May is one of Piran's best months on the climate data.
- First warm month: highs reach 71°F, up from 63°F in April.
- Comfort holds steady from April (85 → 84/100).
- May sits inside the May – Sep window our Slovenia’s Alpine Lakes route recommends.
What to pack for May
- Light, breathable clothes71°F afternoons
- Sunscreen, sunglasses and a hatstrong sun this month
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost picks involve some walking
What to do in Piran in May
With conditions on your side, the picks below favor time outside.
Sečovlje Salina Nature Park
Working salt pans and wetland near Piran, with saltworks still harvested by hand.
Why now May scores 84/100 for comfort, good conditions for being outside.
Fritolin pri Cantini
Self-service seafood spot on Tartini Square for fried squid and sardines.
Why now Highs near 71°F and 3.5 in of monthly rain make this an easy outdoor pick.
Restaurant Pavel
Waterfront seafood restaurant on the Piran promenade.
Why now One to do outside while the weather is on your side.
Sergej Mašera Maritime Museum
Harbor-front museum on Piran's seafaring and salt-making history.
Church of St. George
Hilltop church with a bell tower over the town and the Gulf of Piran.
Nearby in May
- Ljubljana in May~58 mi · highs 69°F, 3.8 in rain · similar daytime temperatures, about as wet
- Lake Bled in May~64 mi · highs 68°F, 3.9 in rain · 2°C (3°F) cooler by day, about as wet
- Cortina d'Ampezzo in May~98 mi · highs 60°F, 4.3 in rain · 6°C (11°F) cooler by day, wetter
- Val Gardena in May~116 mi · highs 60°F, 4.3 in rain · 6°C (11°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~256 m to Piran's ~3 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Piran in May: quick answers
Is May a good time to visit Piran?
Yes. On the climate data it's one of the best months, scoring 84/100. Expect highs of 71°F (22°C) and 3.5 in (89 mm) of rain. May is inside the May – Sep window our Slovenia’s Alpine Lakes route recommends.
How hot is Piran in May?
Average highs are 71°F (22°C) and average lows 58°F (14°C), making it the 5th-warmest month by daytime highs.
Does it rain a lot in Piran in May?
Some: about 3.5 in (89 mm) of rain falls across May on average, the 5th-wettest month of the year. The annual total is about 40.4 in (1027 mm).
What should I pack for Piran in May?
Bring light, breathable clothes (71°F afternoons), sunscreen, sunglasses and a hat (strong sun this month), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most picks involve some walking).
Routes in season in May
- Slovenia’s Alpine Lakes May – Sep
Planning Piran in May?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.