Naravoslovna plaža
Naravoslovna plaža is a beach that is customarily clothing optional in Koper, Slovenia. The sea is warmest in August at about 25°C (78°F) and coolest in February (10°C (49°F)). Average air temperatures peak in July at 23°C (74°F), and the best time to visit is June to August. EU monitoring rated the bathing water "Excellent" in 2025. There are 8 other naturist places within 50 km (31 mi), the closest being Divja plaža Punta (1 km (0.6 mi)).
Weather and water temperature at Naravoslovna plaža
Tap a month. Averages: air 2001–2025 (NASA POWER), sea 1991–2020 (NOAA OISST).
| Month | Air | Sea | Rain |
|---|---|---|---|
| January | 4°C | 11°C | 68 mm |
| February | 4°C | 10°C | 82 mm |
| March | 8°C | 10°C | 72 mm |
| April | 12°C | 13°C | 69 mm |
| May | 16°C | 18°C | 89 mm |
| June (best) | 21°C | 23°C | 74 mm |
| July (best) | 23°C | 25°C | 60 mm |
| August (best) | 23°C | 25°C | 79 mm |
| September | 18°C | 23°C | 112 mm |
| October | 14°C | 19°C | 102 mm |
| November | 9°C | 16°C | 123 mm |
| December | 5°C | 13°C | 96 mm |
Not sure what the numbers mean? Here is how warm is warm enough to swim.
Visiting
- Bathing water profile: NARAVNO KOPALIŠČE RKS MZL DEBELI RTIČ
- Coordinates: 45.58401, 13.71480 · OpenStreetMap
- Local law: is public nudity legal in Slovenia?
- Before you go, read our nude beach etiquette guide.
- First time? Read our guide to your first time at a nude beach.
Naturist places near Naravoslovna plaža
- 1Divja plaža Punta nude beach · Koper · best June to AugustCustomarySea 25°C in August
- 2Bele Skale nude beach · Izola · best June to AugustToleratedSea 25°C in August
- 3Plaža Strunjan nude beach · Piran · best June to AugustCustomarySea 25°C in August
- 4FKK Kanegra nude beach · Istria · best June to AugustClothing optionalSea 25°C in August
- 5Camping Kanegra FKK naturist campground · IstriaClothing optional
- 6Liburnia FKK nude beach · Trieste · best June to AugustClothing optionalSea 25°C in August
- 7Costa dei Barbari nude beach · Trieste · best July to AugustClothing optionalSea 25°C in August
- 8Rt Špic nude beach · Istria · best June to AugustClothing optionalSea 26°C in August
Status labels: Official · Naturist only · Clothing optional · Tolerated · Customary · Listed · Prohibited · Closed. Statuses come from open data and are not yet verified in person.
Frequently asked questions
Is Naravoslovna plaža clothing optional?
Naravoslovna plaža is listed as "customarily clothing optional" according to OpenStreetMap (nudism=customary). Rules can change, and clothing-optional zones are often only part of a beach, so look for signs on arrival and follow local rules. NudistMap has not yet verified this status in person. You can check what applies in Slovenia before you go.
When is the best time to visit Naravoslovna plaža?
Based on 2001–2025 climate averages (NASA POWER), the most comfortable months are June to August. July averages 23°C (74°F) and January 4°C (38°F).
How warm is the water at Naravoslovna plaža?
Long-term sea surface temperatures (NOAA OISST, 1991–2020) range from 10°C (49°F) to 25°C (78°F) in August. Water at the shore can be a few degrees different.
Is the water clean at Naravoslovna plaža?
The nearest EU-monitored bathing site (NARAVNO KOPALIŠČE RKS MZL DEBELI RTIČ) was rated "Excellent" for the 2025 season under the EU Bathing Water Directive.
What other naturist places are near Naravoslovna plaža?
The closest are Divja plaža Punta (1 km (0.6 mi)), Bele Skale (8.7 km (5.4 mi)) and Plaža Strunjan (10 km (6.4 mi)).
Sources
Status from OpenStreetMap (nudism=customary). Not yet verified against an official source; local rules may have changed. Data updated 2026-10-31. All data sources and licenses. © OpenStreetMap contributors.