Porto tumbles down in terraces to the mouth of the Douro, facing the port wine lodges of Vila Nova de Gaia. The climate is wetter and cooler than in Lisbon, and an unheated pool only really comes into its own in high summer. Indoor spa pools and heated pools with river views let you swim in any season. I've selected 18 places, all rated at least 8/10; the top-rated is Mansion LA - Porto - heated pool (4.98/5).
Each city has its own selection, with a page for each type of accommodation.
Places are ranked from highest to lowest rated. The yellow bubble shows the advertised water temperature, when it's known.
18 places shown
The pool. Heated private saltwater infinity pool, billed as usable year-round.
The pool comes up in 20 guest reviews.
Guide's tip. Get confirmation that heating is included in the price for your dates.
The pool. Private pool, which can be heated for an extra €30 a night.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Heating costs extra and must be requested at least two days before arrival.
The pool. Shared outdoor pool, covered and heated by a heat pump from October to April.
The pool comes up in 72 guest reviews. The host warns that heating can't be guaranteed in extreme cold or in the event of a breakdown.
Guide's tip. No swimming in the evening: enjoy the pool during the day.
The pool. Indoor pool, outdoor pool and children's pool.
The pool category scores 9/10 on Kayak; guests talk of a relaxing outdoor pool, without mentioning the temperature.
Guide's tip. Heating of the outdoor pool isn't stated: in winter, plan on the indoor pool.
The pool. Small indoor infinity pool in the spa.
Some guests mention the small indoor infinity pool, without saying anything about the water temperature.
Guide's tip. The pool is small: it's a place to relax, not to swim lengths.
The pool. Indoor pool in the wellness centre.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The hotel is on the coast, about 20 km from the centre of Porto: plan on the train or a car.
The pool. Indoor pool at the spa, with sauna.
Travellers praise the spa. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Pool access is by reservation; fixed time slots for children aged 7 to 16.
The pool. Indoor pool in the spa.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. An out-of-town hotel, handy if you're driving; central Porto is about 15 minutes away.
The pool. Indoor pool, mentioned in Expedia's FAQ.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask about the water temperature and the indoor pool's opening hours before you book.
The pool. Heated indoor infinity-edge pool in the spa, with views of the Douro and the old town. Outdoor infinity pool open from April to October.
According to Kayak's summary, guests really like the pool; a few were bothered by a noisy group. No reviews mention the water temperature.
Guide's tip. From October to April, only the spa's indoor pool is open: that's the heated one.
The pool. Indoor pool in the spa, according to Orbitz.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask about the water temperature and the indoor pool's opening hours before you book.
The pool. Indoor pool, according to Orbitz.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask about the water temperature and the indoor pool's opening hours before you book.
The pool. Indoor pool, mentioned by Expedia and Orbitz.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask about the water temperature and the indoor pool's opening hours before you book.
The pool. Heated indoor pool at the spa, with floor-to-ceiling windows, open 10:00 to 20:00. Sauna, hammam.
Mr & Mrs Smith describes a heated indoor pool. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The pool is off-limits to under-16s.
The pool. Two indoor pools in the basement, with a hot tub at the spa.
The hot tub. Hot tub at the spa.
Reviews are mixed: some enjoy the pool and jacuzzi, others find the area dated and uninviting. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. There may be a charge for the spa (around €20 according to one traveller): ask which pool is included.
The pool. Heated outdoor rooftop pool.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Get the rooftop's opening period confirmed: an open-air pool may close in winter.
The pool. Indoor pool open 10:00 to 19:00.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Access costs extra (€15 per person per day) and the pool is closed from 18 August to 30 September 2026: check before booking.
The pool. Indoor pool, hammam and outdoor pool.
Travellers find the indoor pool very pleasant. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The hotel is out of the centre: you'll need a car to get into Porto.
These places don't have a confirmed heated pool, but they do have a hot tub: the water is hot all year round. A good way to relax in the warm.
These places were suggested to us directly by their owners. The heated pool is declared by them; they don't yet have enough guest reviews to join the selection.
In my selection, the top-rated is Mansion LA - Porto - heated pool (Villa for rent · Airbnb), with 4.98/5 (47 reviews · Airbnb). Next come Private House in Pedras POOL & SPA (4.86/5) and 733 Pool House (4.82/5).
Yes at Mansion LA - Porto - heated pool: the pool is advertised as heated all year round. At 733 Pool House, heating is seasonal (heated october to april). Pestana Palácio do Freixo, PortoBay Flores and Hotel Solverde Spa & Wellness Center have an indoor pool, sheltered from the wind. Either way, ask for the heating dates before you book.
None of the places selected in Porto gives a precise temperature. Ask the property before booking, especially out of season.
Yes: Porto Palácio Hotel by The Editory also has a hot tub in addition to the heated pool.
Yes, 2 villas and holiday homes are selected: Mansion LA - Porto - heated pool and Private House in Pedras POOL & SPA. Heating is sometimes charged extra: check the listing.
The word "heated" on a booking page isn't enough. Every place must have a rating of at least 8/10 (or 4/5) and carries one of these four levels.
Guests mention the heated water in their reviews, with the season when they say so.
A journalist or guide who stayed there describes the heated pool.
The hotel or the platform says so, but I haven't yet found a review that confirms it.
Heating isn't specified, but the water is sheltered from the wind and cold air. Ask for the temperature before you book.
I left these out because guests report water colder than advertised, or because no heating or indoor pool is mentioned.
| Place | What the sources say | Rating | Reason |
|---|---|---|---|
| Penthouse - Porto Pool Spot C | Shared pool open all year round, but the listing states it is not heated | 4,93/5 | Pool not heated |
| Golden Tulip Porto Gaia Hotel | Indoor pool at the spa, in Vila Nova de Gaia. | 7,4/10 | Rating below 8/10 |
| Private Heated Swimming Pool (PortoHouse, Campanhã) | House advertised with a heated pool and jacuzzi. | 10/10 | Only 2 reviews: no rating established yet |
