Town in Coastal-Karst, Slovenia
Piran weather by month and the best time to visit
When to go to Piran
May–June and September are warm, calm and less crowded; July–August is hot and packed. Winter is mild, quiet, with many closures.
Piran weather by month
Average daily high, rainfall and conditions.
- Jan7°68 mm
- Feb8°82 mm
- Mar12°72 mm
- Apr17°69 mm
- May21°89 mm
- Jun26°74 mm
- Jul28°60 mm
- Aug28°79 mm
- Sep24°112 mm
- Oct18°102 mm
- Nov13°123 mm
- Dec9°96 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 7°C45°F | 2°C36°F | 68 mm | 83% | Cold |
| February | 8°C47°F | 3°C37°F | 82 mm | 81% | Cold |
| March | 12°C54°F | 5°C42°F | 72 mm | 78% | Cool |
| April | 17°C63°F | 10°C49°F | 69 mm | 74% | Cool |
| May | 21°C71°F | 14°C57°F | 89 mm | 73% | Pleasant |
| June | 26°C78°F | 19°C65°F | 74 mm | 71% | Pleasant |
| July | 28°C83°F | 21°C69°F | 60 mm | 65% | Pleasant |
| August | 28°C83°F | 20°C69°F | 79 mm | 66% | Pleasant |
| September | 24°C74°F | 16°C61°F | 112 mm | 71% | Pleasant |
| October | 18°C65°F | 12°C54°F | 102 mm | 79% | Pleasant |
| November | 13°C56°F | 8°C47°F | 123 mm | 83% | Cool |
| December | 9°C48°F | 4°C39°F | 96 mm | 82% | Cold |
Best months across Slovenia
Quick answers
What is the best month to visit Piran?
May–Jun, Sep. May–June and September are warm, calm and less crowded; July–August is hot and packed. Winter is mild, quiet, with many closures.
When is the rainy season in Piran?
Rain peaks in November with about 123 mm. No month averages 150 mm or more.
What is the hottest month in Piran?
July, with average highs of 28°C (83°F).
How cold does Piran get?
The coolest nights are in January, averaging 2°C (36°F).
More about Piran
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Sources
- NASA POWER climatology (2001–2020)
- Portorož and Piran Tourism
- Slovenia.info (Slovenian Tourist Board)
- Arriva Slovenia
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 1.4°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.