Safety in Tenerife: what to know before you swim, climb or drive
Tenerife rarely hurts anyone in a spectacular way. The volcano does not erupt on the day of your holiday, and sharks are not the problem. What comes up again and again in the statistics is far more ordinary: a wave breaking where you were not expecting it, an afternoon of sun that felt mild, a trail closed for wind when you are already up there. None of those things announce themselves with a soundtrack.
This guide gathers what the official sources say, with the numbers in plain sight. Not to frighten anyone, but because almost everything that follows is solved by knowing it beforehand.
The sea is the serious chapter, and the figures say so plainly
In January 2026 the Real Federación Española de Salvamento y Socorrismo, the Spanish lifesaving federation, published its national report for the previous year: 472 people drowned in Spain in 2025. Of those, 75 in the Canary Islands, the second highest figure in the country, behind Andalusia alone. More than half of the deaths happened on a beach, and 220 of them in places with no lifeguard service.
This year's Canary figure points the same way. According to the Asociación para la Prevención de Accidentes Acuáticos de Canarias, which works with data from 1-1-2, the Guardia Civil and Salvamento Marítimo, there had been 39 deaths up to July 2026, 30% more than in the same period a year earlier. Tenerife tops the list with 15, and 63% of the accidents happened on a beach.
What these numbers have in common is not the raging sea of the photographs. It is the absence of supervision, and the habit of going in alone.
What each flag actually means
Red is not a recommendation. It means there is direct danger in at least one significant part of the beach, whether from currents, swell, animals or contamination, and that swimming is prohibited. The lifeguard can order you out of the water and, if you refuse, call the local police.
Very different figures circulate about the exact fine, and it is worth being honest here: the amount is set by each municipal by-law, so it changes from one town to the next. There is no single "Canary Islands fine". What does not change anywhere is the first part: with a red flag, you do not go in.
The Gobierno de Canarias adds two pieces of advice worth more than any penalty. On unmarked beaches with no lifeguard, do not swim alone, and ask local people or the surfers which parts of that beach are dangerous. Nobody will tell you better.
The Teide has two separate permits, and almost everybody confuses them
The first is for trail 10, Telesforo Bravo, the final stretch from La Rambleta up to the crater. That permit is requested on the TENERIFE ON platform, and it governs access between 9:00 and 17:00.
The second is more recent and far less well known: since 30 November 2024, walking up from the bottom on trails 7, 9, 23 and 28 also requires authorisation, in three time bands with limited places. They are two separate systems. Holding one does not give you the other.
Two figures worth keeping in mind: the penalty for breaching the rules is 600 euros, and if anyone has to come and find you, a rescue is charged at between 2,000 and 12,000 euros.
The detail that catches most people out up there: closures during an alert
When the Gobierno de Canarias declares a prealerta, a pre-alert, access for the general public is prohibited between 16:00 and 9:00. With an alerta or an alerta máxima, the trails close for all 24 hours. And here is the part that matters: the permit you already had does not count while the closure is in force. The park management can also close the trails without any declaration at all, for ice, snow or wind.
There is a distinction here that escapes almost every visitor. An AEMET aviso, the yellow, orange or red weather warning, and an alerta from the Gobierno de Canarias are not the same thing, and it is the second one that decides what closes. You can see a yellow warning and find the trails open, or the other way round.
And a new rule that almost nobody has read yet
Since 18 December 2025, the park's new management plan, the Plan Rector de Uso y Gestión, prohibits drinking alcohol anywhere in the Parque Nacional del Teide, outside the places authorised to sell and serve it. It is a recent rule: the previous plan, in force until that date, had nothing of the kind. That is why you will not find it in guidebooks or in blogs from a couple of years ago, and why even the national park website's own list of visitor rules has yet to include it.
It is worth understanding how far it reaches, because the idea going around is that the ban starts "above 2,000 metres", and that is not what the rule says. The limit is the park boundary, not an altitude. The edge of the park drops as low as 1,600 metres on the northern side, while in the south it does not begin until 2,050 or 2,250 metres. Put another way: you can be at 2,100 metres and be outside the park, or at 1,700 metres and be inside it. The altitude you happen to be standing at does not tell you whether the rule applies to you. The map does.
A breach is handled as a minor infringement under the Canary Islands natural spaces act, with a fine of 150 to 600 euros.
Beyond the park, there is another rule many people are unaware of, and it applies right across the Canaries: regional law does not permit drinking alcohol in public places, other than on terraces and at festivities regulated by municipal by-law. That includes roads and car parks, the ones inside the park among them.
The sun: the figure that surprises people is the winter one
Everybody knows it is fierce in summer. What almost nobody expects is January.
Did you know? According to AEMET's monthly report for January 2026, the maximum UV index that month at the Izaña observatory in Tenerife was 7.2. On the Spanish mainland the highest was 3.2, in Málaga, and the average of the mainland maximums came to 2.7. In the depths of winter, the mountains of Tenerife measured more than twice the sunniest city on the mainland.
The Dirección General de Salud Pública of the Gobierno de Canarias sums it up like this: the Canaries are the region of Spain with the highest ultraviolet radiation all year round. Its advice is factor 30 or above, staying out of the sun between 11:00 and 17:00, clothing that covers, a wide-brimmed hat and certified sunglasses, and protection on cloudy days as well, because thin cloud lets most of the radiation through.
Two factors multiply the effect without your noticing. Altitude, which according to the official sources increases radiation by between 6% and 13% for every thousand metres. And reflection, because dry sand sends back around 15% and sea foam close to 25%. Half a metre underwater, 40% of the surface radiation still reaches you.
Wind and ground swell: why there are big waves in good weather
The trade winds blow from the north-east at average speeds of 20 to 35 km/h and, in summer, on more than 90% of days. The north coast, on the windward side, gets an almost constant swell that rarely goes above three metres. So far, so predictable.
What throws people is the ground swell: waves generated by depressions in the north Atlantic, sometimes over ten metres where they form, which take between two and three and a half days to arrive, travelling thousands of kilometres on the way. They turn up under a clear sky with no local wind. Which is why a perfect day can have dangerous waves at the water's edge.
The official advice from Protección Civil de Canarias for episodes of wind and coastal phenomena is specific: keep away from the coast, do not stand at the end of breakwaters or piers, and do not take risks photographing yourself near where the waves break. If you see waves bigger than usual, do not stay down by the shoreline.
One technical note that hardly anyone knows: weather warnings are issued by zone, not for particular geographical features. A specific viewpoint is never going to have a warning of its own.
If something happens: 1-1-2
It is free, it works from any phone, and there is no dialling code to remember. There are in-house operators in Spanish, English, German, French and Italian, and a telephone interpreting service for many more languages.
The most useful thing to know: the AML system locates your call automatically, to within metres. You do not have to install anything or do anything special. There is also the App 112 Canarias, which lets you raise the alarm without speaking, sending your position, photographs and video, which helps when you cannot talk.
When you call, the first thing they need is what has happened and where. With that they can already send help, even if they carry on asking you questions. And if you called by mistake, call back to cancel it.
On the road: cyclists and pedestrians
Overtaking a cyclist means leaving at least 1.5 metres, using part of the adjacent or oncoming lane, and changing lane completely if the road has more than one in each direction. It is not a recommendation: it is a serious offence, 200 euros and 6 points.
If you are walking along a road outside a built-up area, the general rule is to keep to the left, facing the traffic. And between dusk and dawn, or in poor visibility, you must wear a reflective item visible at 150 metres.
Three links before you set off
- Forecast UV index for the Canaries: aemet.es, ultraviolet radiation section
- Weather warnings in force: aemet.es, warnings for the Canary Islands
- Gobierno de Canarias alerts, which are the ones that decide closures: gobiernodecanarias.org/emergencias/alertas
If you are putting a route together, you will get good use out of our guides to The Best Beaches in Tenerife and The best viewpoints of Tenerife: the island seen from above, and the general overview in What to See in Tenerife: The Essential Sights.
Sources
1. Real Federación Española de Salvamento y Socorrismo, National Drowning Report 2025, published 05/01/2026.
2. Asociación para la Prevención de Accidentes Acuáticos de Canarias, figures up to July 2026.
3. Cabildo de Tenerife, new regulation on access to the Teide on foot, in force since 30/11/2024.
4. AEMET, Monthly summary of ultraviolet radiation and the ozone layer, January 2026 (06/02/2026) and July 2025 (21/08/2025).
5. Gobierno de Canarias, Dirección General de Salud Pública, recommendations on ultraviolet radiation, 20/02/2025.
6. AEMET, Technical Note 25, catalogue of adverse weather phenomena, 2018.
7. AEMET, Plan Meteoalerta, version 9 (10/01/2025) and threshold annex (31/05/2022).
8. Gobierno de Canarias, Dirección General de Seguridad y Emergencias, advice to the public: winds, coastal phenomena and bathing.
9. 1-1-2 Canarias, service information and App 112 Canarias manual.
10. Real Decreto Legislativo 6/2015, Ley sobre Tráfico, article 35.4, and Reglamento General de Circulación, articles 122 and 123.
11. Decreto 182/2025, of 1 December, Plan Rector de Uso y Gestión del Parque Nacional del Teide, BOC no. 240 of 03/12/2025, regulatory annex 6.2.1.z.
12. Ley 4/2017 del Suelo y de los Espacios Naturales Protegidos de Canarias, article 392.3.f, and Ley 9/1998 on drug dependency, article 20.4.g.
