Praia dos Alteirinhos
Praia dos Alteirinhos is an officially designated clothing-optional beach in Beja, Portugal. The sea is warmest in September at about 19°C (67°F) and coolest in February (15°C (59°F)). Average air temperatures peak in August at 23°C (74°F), and the best time to visit is June to September. EU monitoring rated the bathing water "Excellent" in 2025. There are 8 other naturist places within 50 km (31 mi), the closest being Praia da Meia Laranja (0.1 km (0.1 mi)).
Weather and water temperature at Praia dos Alteirinhos
Tap a month. Averages: air 2001–2025 (NASA POWER), sea 1991–2020 (NOAA OISST).
| Month | Air | Sea | Rain |
|---|---|---|---|
| January | 11°C | 16°C | 51 mm |
| February | 12°C | 15°C | 47 mm |
| March | 13°C | 15°C | 58 mm |
| April | 15°C | 16°C | 56 mm |
| May | 18°C | 17°C | 30 mm |
| June (best) | 21°C | 18°C | 8 mm |
| July (best) | 23°C | 19°C | 1 mm |
| August (best) | 23°C | 19°C | 4 mm |
| September (best) | 22°C | 19°C | 24 mm |
| October | 19°C | 19°C | 71 mm |
| November | 14°C | 18°C | 87 mm |
| December | 12°C | 16°C | 66 mm |
Not sure what the numbers mean? Here is how warm is warm enough to swim.
Visiting
- Website: almanaturista.pt
- Bathing water profile: ALTEIRINHOS
- Coordinates: 37.51739, -8.78976 · OpenStreetMap
- Local law: is public nudity legal in Portugal?
- 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 Praia dos Alteirinhos
- 1Praia da Meia Laranja nude beach · Beja · best June to SeptemberNaturist onlySea 19°C in August
- 2Praia das Adegas nude beach · Faro · best June to SeptemberOfficialSea 19°C in August
- 3Praia dos Nascedios nude beach · Beja · best July to SeptemberOfficialSea 19°C in August
- 4Praia de Vale Figueira nude beach · Faro · best July to SeptemberCustomarySea 20°C in August
- 5Praia do Saltinho nude beach · Beja · best July to SeptemberOfficialSea 19°C in August
- 6Praia Naturista da Ilha do Pessegueiro naturist park or area · Setúbal · best July to AugustClothing optional
- 7Praia da Bordeira nude beach · Faro · best July to SeptemberCustomarySea 20°C in August
- 8Praia naturista do Salto nude beach · Setúbal · best July to SeptemberOfficialSea 19°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 Praia dos Alteirinhos clothing optional?
Praia dos Alteirinhos is listed as "official clothing-optional area" according to Câmara Municipal de Odemira: nota de imprensa N.I. 51, 29/05/2026. Rules can change, and clothing-optional zones are often only part of a beach, so look for signs on arrival and follow local rules. You can check what applies in Portugal before you go.
When is the best time to visit Praia dos Alteirinhos?
Based on 2001–2025 climate averages (NASA POWER), the most comfortable months are June to September. July averages 23°C (73°F) and January 11°C (52°F).
How warm is the water at Praia dos Alteirinhos?
Long-term sea surface temperatures (NOAA OISST, 1991–2020) range from 15°C (59°F) to 19°C (67°F) in September. Water at the shore can be a few degrees different.
Is the water clean at Praia dos Alteirinhos?
The nearest EU-monitored bathing site (ALTEIRINHOS) was rated "Excellent" for the 2025 season under the EU Bathing Water Directive.
What other naturist places are near Praia dos Alteirinhos?
The closest are Praia da Meia Laranja (0.1 km (0.1 mi)), Praia das Adegas (8.7 km (5.4 mi)) and Praia dos Nascedios (31 km (19 mi)).
Sources
Status checked on 2026-10-31 against Câmara Municipal de Odemira: nota de imprensa N.I. 51, 29/05/2026 (official source); see how we verify. Data updated 2026-10-31. All data sources and licenses. © OpenStreetMap contributors.