Summer in Prague sounds idyllic—sunshine over the red rooftops, walks along the Vltava River, and ice cream by the Charles Bridge. But before you pack your swimsuit and flip-flops, let’s talk about what the Prague summer is really like—and how to make the most of it without melting, getting caught in a storm, or regretting your shoe choices.

Prague Weather: June to August

June marks the start of Prague’s proper summer season. Daytime highs usually sit around 25°C, while evenings can get surprisingly chilly. That means you’ll want to layer: think light jacket or shirt over a T-shirt in the morning, then peel it off as the day warms up.
Pro tip: if the forecast says it won’t rise above 20°C, maybe skip the sandals.

July turns up the heat—literally. It’s the month of heat waves, with temperatures sometimes exceeding 35°C. Walking through Prague can feel like opening the oven door. Dressing for this weather isn’t easy, but light, breathable clothes are your best friend. And yes, locals have seen plenty of brave tourists in swimsuits trying to survive the heat.

By August, temperatures start to ease again. The first half of the month is still hot, but things cool down towards September. As a rule of thumb, dress like it’s July for early August and like it’s June for the second half of the month.

The Sweet Side of Summer: Ice Cream

Let’s be honest: no Prague summer is complete without ice cream. Local favorites include Angelato and Crème de la Crème, both popular gelato chains in the city. And here’s a confession—some locals still swear by the soft-serve machines you find at fairs and parks. If you haven't tried it, I recommend stopping by Světozor in the passage near Wenceslas Square. Whatever your preference, cooling down with a scoop (or three) is a summer tradition here.

Tips for a Smooth Summer Holiday in Prague

1. Make Reservations Early

Summer is Prague’s busiest season—around 4.5 million visitors arrive in just three months. That means popular restaurants and experiences can book up fast. If there’s a place you must try, reserve a table a week or two ahead.

2. Expect Sudden Storms

Summer in Prague isn’t all sunshine. Thunderstorms can strike out of nowhere, and they’re not the gentle kind. When they hit, forget your umbrella—just find shelter. To stay one step ahead, try a weather radar app like MeteoRadar to track approaching rain clouds. It can buy you those precious 5–10 minutes to escape before the downpour begins.

3. Air Conditioning Is Not Guaranteed

Despite frequent heatwaves, air conditioning is still something of a luxury here. Many cafes, restaurants, and even museums don’t have it. Before booking your accommodation, double-check that your hotel or apartment has air conditioning. You’ll thank yourself later (trust us).

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4. Drinking Water in Prague Summers

Prague's tap water is perfectly safe to drink—it's some of Europe's cleanest, sourced from protected forests and regularly tested. Fill your reusable bottle at any public fountain (look for green "pitná voda" signs) or restaurant for free refills.
Carry a lightweight bottle, like a collapsible one for easy packing, and you'll stay refreshed without extra costs.

Warning: Not all public drinking fountains are clean, so consider refilling your bottle at a restaurant or café. As you can see in the photo above, some fountains are used as washbasins.

4. Take a Swim

No, the Czech Republic doesn’t have a seaside, but locals make up for it with rivers and lakes. Around Prague, outdoor swimming pools and reservoirs offer much-needed relief from the city's heat. One popular spot is Žluté lázně, located near Vyšehrad on the Vltava River. It’s not exactly the Riviera—and yes, it’s technically river water shared with swans and the occasional nutria—but it’s a great place to relax, play volleyball, or grab an ice cream.

If you can rent a car, day trips to lakes like Slapy or Lhota offer cleaner water and more natural scenery.

Luckily, the outdoor swimming pools make up for the lack of sea access, so take a look at the list below and find the closest one to you.

Outdoor swimming pools & nature-style spots in/near the city

Podolí Swimming Stadium (Plavecký stadion Podolí) – Large complex by the Vltava with 50 m indoor and outdoor pools, smaller outdoor pool, kids’ pool, sauna, and great city views. Gets very busy on the hot days, especially in the afternoon!
Petynka Outdoor Pool (Prague 6) – 50 m heated outdoor pool with a long slide and large sunbathing lawns, very popular in summer.
Divoká Šárka Swimming Pool (Prague 6) – Cold but scenic pools in a nature reserve valley, great for a “forest” feel while still in Prague. Warning: it takes a 15-minute walk through the park to get there.
Na Stírce / Stírka Pool (Kobylisy, Prague 8) – One of Prague’s oldest outdoor pools, with grassy areas and a family vibe.
Pražačka (Prague 3) – Sports & recreation area with an outdoor pool and city views, open late in summer.
Ládví Outdoor Pool (Prague 8) – Classic neighborhood lido with pool, lawns, and basic sports facilities.
Biotop Radotín – Natural “biotope” swimming pool with filtered lake‑style water, more natural feel, but still in Prague. Warning: it is quite remote.
Hostivař Reservoir (Hostivařská přehrada) – Lake with beaches in southeast Prague, popular for swimming, sunbathing, and sometimes nude beach areas.
Aquapalace Praha – Čestlice – Huge indoor/outdoor water park just outside Prague, lots of slides and wellness zone.
Swimming Pool Lhotka (Koupaliště Lhotka) – Natural biotope with clear, chemical‑free water, grassy beaches, and a kids’ area in Prague 4.

Why Summer in Prague Is Worth It

Even with the heat, the storms, and the (occasional) dead mouse sighting by the riverbank, Prague’s summer has its charm. The days are up to 15 hours of daylight, countless castles open their gates for the season, and the city buzzes with open-air concerts, beer gardens, and festivals.

Sure, many locals flee to cooler destinations—but for visitors, this is the time when Prague truly shines. Just come prepared, stay hydrated, and keep that weather app handy.

WRITTEN BY VALERY

Licensed Prague guide and co-creator of Real Prague Guides (50K+ YouTube subscribers). My company, 100 Spires City Tours, leads some of the highest-rated tours in Prague.

📷 Instagram: @realpragueguides

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🎫 Book a tour: tours-prague.eu

Disclaimer: This article reflects the personal opinions of the author and is not intended to discourage visitors to Prague from purchasing tickets to the attractions and tours mentioned above.

Surviving (and Enjoying) Summer in Prague: Weather, Tips & Local Secrets