London\u2019s hardiest swimmers normally take to the waters all year round. But for more fair weather outdoor swimming \u2013 there are decently-priced places for refreshing dips all over the city. From heated lidos to rooftop pools, and wild(ish) swimming, here are eight of London\u2019s best outdoor swimming pools. Top tip: Most of the pools listed can be booked via the Better UK app and slots book up fast, especially when the temperatures get above 20\u00b0C. 1. London Fields Lido, Hackney Outdoor swimming can be a chilly affair, but London Fields Lido hits the jackpot by being heated to a very clement 25\u00b0C all year round, with a 50\u00a0metre long pool. Normal opening hours are 6:30\u00a0am to 9\u00a0pm, and it\u2019s floodlit too for late sessions. It\u2019s also one of London\u2019s best known and busiest outdoor pools and slots fill up quickly. But there are proposals to expand the facilities for the first time since 1932, so there should be plenty of space for swimmers of all levels. Costs: (non-members) 2. Oasis Swimming Pool, Covent Garden Rooftop pools in London are usually reserved for members' clubs, bougie hotels, and expensive private residences. But there is one public rooftop pool in London, and it\u2019s slap bang in central London, just a stone\u2019s throw from Theatreland, and close to Covent Garden, Holborn, and Tottenham Court Road Stations. It\u2019s the only heated pool in central London too, with water at a very agreeable 27\u00b0C, and there is a small sun terrace too. Costs: (non member) 3. Brockwell Lido, Herne Hill This South London swimming spot has a 50\u00a0metre outdoor pool. It\u2019s unheated, but still pretty popular for wetsuit-clad winter swimmers. Temperature aside, it\u2019s a rather lovely spot for a swim, with art deco architecture, a cute caf\u00e9, and nearby Brockwell Park. It\u2019s lane swimming only, so it's a better option for more serious swimming sessions, rather than a relaxed dip. Costs: (non-member) 4. Tooting Bec Lido Tooting Bec Lido is closed for refurbishment, reopening date is to be confirmed. One of the other major lidos in South London is Tooting Bec Lido, which is a whopping 91 metres long. It\u2019s actually the largest fresh water swimming pool in the UK\u2014fresh being the operative word as yep, you guessed it, it\u2019s unheated. Unlike some of the other lidos listed, it\u2019s not available to the general public all year round. It\u2019s open from late March to late September, although winter swimming is available to members. 5. Hampstead Ponds, Hampstead Heath For those who want to dip a cautious toe into wild swimming, the three swimming ponds on Hampstead Heath are a great place to start. The surroundings are stunning, and you\u2019ll see fantastic birdlife, like swooping herons as you swim. It\u2019s also got changing facilities and lifeguards as well as life buoys, so you don\u2019t need to be a super-strong swimmer to go. The waters are bracing, but incredibly refreshing and the ponds are separated by women, men, or mixed. The ponds are usually open year-round, and it\u2019s another popular spot for those brave enough to take to the waters in winter. Some sessions will need to be pre-booked, check websites for each pond for details. Costs: Note: Summer opening times differ depending on the time of year. See below for more information on individual swimming areas at Hampstead Heath: 6. Beckenham Place Park Swimming Lake London\u2019s first purpose-built swimming opened in 2021, although there had been a lake on the site centuries ago before it was filled in. Now, it\u2019s been restored for the benefit of swimming enthusiasts across the borough of Lewisham. The park is also the borough\u2019s largest green space, so it\u2019s perfect for a post-swim stroll or a picnic. It\u2019s not somewhere to go for a spontaneous swim though, you have to book a 1 hr slot online in advance. Costs: Adult: ( for non Lewisham residents), book here. 7. Charlton Lido A little further afield than some the better-known south London pools, Charlton Lido is an Olympic-sized (50 m) fully heated swimming pool with two sun terraces and a caf\u00e9. It had a huge refurbishment and was reopened in 2013, and you\u2019ll also find pretty decent gym facilities as well as open-air group cycle classes on the site. Costs: (non-member) 8. London Royal Docks For open-water swimming with city views, head to the London Royal Docks near Canning Town. Run by Love Open Water, it\u2019s suitable for serious swim training or more leisurely swims. There are lane markers for anyone wanting to use the docks for competitive training: 400 metres \u2013 the distance used in the Super Sprint triathlons, 750 metres \u2013 set for Sprint distance triathlons and 1500 metres \u2013 which is used for Olympic Triathlons. Casual swimmers of all levels are also welcome, and if you\u2019re new to open-water swimming, there is a separate area, plus safety tagging for each swimmer and lessons available for anyone wanting to build up their confidence. Swims have to be booked in advance in 55 minute time slots, and during the winter swimmers have to complete a cold water induction before taking to the very cold water. Although it\u2019s ultra-modern and organised, be advised that there are limited changing and bag storage facilities on site (as per swimming at the Hampstead Ponds or other open-water swimming sites). Costs: For cool down options beyond London swimming pools, check out our seaside day trips guide.