Riu Senia
Riu Senia is a clothing-optional beach in Castellón, Spain. The sea is warmest in August at about 26°C (79°F) and coolest in February (13°C (55°F)). Average air temperatures peak in August at 25°C (78°F), and the best time to visit is June to September. There are 8 other naturist places within 50 km (31 mi), the closest being Platja del Trabucador (20 km (13 mi)).
Weather and water temperature at Riu Senia
Tap a month. Averages: air 2001–2025 (NASA POWER), sea 1991–2020 (NOAA OISST).
| Month | Air | Sea | Rain |
|---|---|---|---|
| January | 11°C | 14°C | 35 mm |
| February | 11°C | 13°C | 27 mm |
| March | 13°C | 14°C | 37 mm |
| April | 15°C | 15°C | 45 mm |
| May | 18°C | 18°C | 48 mm |
| June (best) | 22°C | 22°C | 19 mm |
| July (best) | 25°C | 25°C | 17 mm |
| August (best) | 25°C | 26°C | 36 mm |
| September (best) | 23°C | 25°C | 63 mm |
| October | 20°C | 22°C | 62 mm |
| November | 15°C | 18°C | 56 mm |
| December | 12°C | 15°C | 30 mm |
Not sure what the numbers mean? Here is how warm is warm enough to swim.
Visiting
- Coordinates: 40.52211, 0.51424 · OpenStreetMap
- Local law: is public nudity legal in Spain?
- 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 Riu Senia
- 1Platja del Trabucador nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 2platja dels Eucaliptus nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 3Platja del Serrallo nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 4Platja del Serrallo nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 5Platja de l'Alfacada nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 6Platja de la Bassa de l'Arena nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 7Platja de la Marquesa nude beach · Tarragona · best June to SeptemberClothing optionalSea 26°C in August
- 8Punta del Fangar nude beach · Tarragona · best June to SeptemberClothing 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 Riu Senia clothing optional?
Riu Senia is listed as "clothing optional" according to OpenStreetMap (nudism=allowed). 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 Spain before you go.
When is the best time to visit Riu Senia?
Based on 2001–2025 climate averages (NASA POWER), the most comfortable months are June to September. July averages 25°C (77°F) and January 11°C (52°F).
How warm is the water at Riu Senia?
Long-term sea surface temperatures (NOAA OISST, 1991–2020) range from 13°C (55°F) to 26°C (79°F) in August. Water at the shore can be a few degrees different.
What other naturist places are near Riu Senia?
The closest are Platja del Trabucador (20 km (13 mi)), platja dels Eucaliptus (27 km (17 mi)) and Platja del Serrallo (29 km (18 mi)).
Sources
Status from OpenStreetMap (nudism=allowed). Not yet verified against an official source; local rules may have changed. Data updated 2026-10-31. Wikidata Q28121607 · All data sources and licenses. © OpenStreetMap contributors.