Safety · Destination Guide
Atlantic diving and Riviera charm, with Lisbon and Sintra next door
Updated Dec 13, 2025 • 14 sources
The Lisbon Coast is an Atlantic environment: prioritize sea state, conservative planning, and surface signaling. Protected areas like Arrabida add rules designed to reduce impact, and Berlengas limits visitors to protect a sensitive reserve.
Portugal emergency number is 112. For non-emergency medical guidance, call SNS 24 (808 24 24 24). Lisbon has hyperbaric and dive medicine capability, including services connected to the Portuguese Navy and military health system. Your dive operator and insurer can coordinate referrals if needed.
Atlantic swell and surge
Swell is the main limiter. Even when it looks calm from shore, sets can surge through channels and make exits difficult. If in doubt, choose a sheltered bay or do a land day.
Rip currents near points and river influence
Sites near the Tagus mouth and exposed points can develop rips. Stay close to your plan, carry surface signaling, and follow local briefs.
Low visibility and entanglement risk
Expect fishing lines, nets, and reduced visibility at times. A cutting tool and good buddy spacing are sensible defaults.
Cold stress outside summer
Water near 14°C to 16°C can shorten dives and increase fatigue. Dress warm between dives and plan conservative profiles.
Do Not Do This
Avoid entering when atlantic swell and surge. Confirm local briefings before committing.
| Contact | Role | Phone | Availability |
|---|---|---|---|
| Emergency services | Police, ambulance, fire | 112 | 24/7 |
| SNS 24 Health Line | Non-emergency medical advice and triage | 808 24 24 24 | 24/7 |
| Emergency at sea (Portugal) | Maritime emergency contact | +351 214 401 919 | 24/7 |