Water-rich fruit and vegetables – think cucumber, celery, tomatoes, watermelon – act like edible electrolytes. They cool you down and replenish the minerals your body loses through sweat.
Here are five of the best hydrating recipes to revive you on the hottest days of the year.
Watermelon and Tomato Gazpacho
Ottolenghi
Gazpacho is one of the most delicious ways to get water, potassium and freshness into an overheated body. And this is gazpacho with a difference. Instead of the usual all-tomato base, Yotam Ottolenghi folds in watermelon - which sounds rather eccentric until you taste it. The tomato and watermelon blend is both cooling, hydrating and unexpectedly moreish. That sweet-savoury balance will make you wonder why everyone isn’t doing it. People call it medicinal for a reason. Served icy cold straight from the fridge, with a drizzle of oil and a handful of torn basil, it does just what you need on a heatwave.
Grilled Pineapple and Halloumi Salad with Pink Pickled Onions
Thomasina Miers
Tropical fruit and salty cheese is a brilliantly refreshing and satisfying combo in hot weather. In this recipe, Thomasina Miers pairs pineapple and halloumi with black beans, pink pickled onions, coriander, mint and a citrus-bright dressing. Seeing as pineapple is about 85% water, it’s one of the most hydrating fruits around – and when it’s charred lightly on the bbq, it becomes deliciously caramelised. Halloumi, meanwhile, brings the salty hit your body genuinely needs in a heatwave, replacing the minerals you lose the moment you step outside.
Viral Spiral Cucumber Salad
Delish
TikTok has plenty to answer for, but it did give us the ‘entire cucumber’ salad. This spiral-version looks tricky to achieve but is surprisingly straightforward once you’ve done it once. Cucumbers are 96% water so a good heatwave staple. Toss the spirals in a sweet-spicy harissa dressing (dial the heat up or down with honey as you like), then shower with feta and dill. It’s the kind of dish you’ll want to eat straight from the bowl.
Crunchy Mediterranean-Style Celery Salad
The Mediterranean Dish
Celery is basically edible hydration. It’s 95% water and full of the natural electrolytes you lose when your body sweats. Tossed with a lemony Greek yoghurt dressing, fresh herbs and toasted almonds, it becomes a cooling, crunchy 10-minute meal. On hot days when slaving over an oven feels unthinkable, this low-carb alternative to potato or pasta salads is a winner.
Vietnamese Summer Rolls
Stylist
Essentially a hand-held noodle salad, summer rolls are the definition of cool eating. Hydrating, crunchy and totally customisable, they’re built for those unbearably hot days. The trick is to prep every filling ingredient before you even think about touching the delicate rice paper. Once the wrapper is dipped in water, you have seconds before it turns from pliable to sticky chaos. Tightly roll water-rich vegetables such as cucumber, bean sprouts and lettuce with cold vermicelli noodles in the paper, keeping everything as crisp and chilled as possible. Serve with a lime-spiked dipping sauce and eat immediately for maximum crunch – and maximum relief.
By Annabel Jack
August 2026
FAQs
What foods keep you hydrated in a heatwave?
What foods keep you hydrated in a heatwave?
The most hydrating foods are those with naturally high water content such as cucumber, watermelon, celery, tomatoes and citrus fruits. These ingredients help replenish minerals lost through sweat. Different countries rely on their own cooling staples: Spain has gazpacho, Japan turns to cold somen noodles, Vietnam uses fresh herbs and raw vegetables in summer rolls, and Mexico leans on lime-heavy salads and agua fresca fruits. Look for recipes that combine water-rich produce, natural salts and cooling herbs.
What are the best global heatwave dishes to try at home?
Cultures in consistently hot climates have perfected cooling cuisine. Some of the most effective dishes include Spanish gazpacho and salmorejo, Thai green papaya salad, Japanese hiyashi chuka (chilled ramen), Middle Eastern fattoush and Vietnamese summer rolls. These dishes all rely on raw produce, citrus, herbs, minimal cooking and high water content.
How can you tell if you’re dehydrated during a heatwave?
Common signs of dehydration include headaches, dizziness, muscle cramps, fatigue, dry mouth and a sudden drop in appetite. In hotter countries such as India or the UAE, people are taught to watch for heat stress markers like craving salt, irritability, dark urine and difficulty cooling down after rest. Hydration requires both water and electrolytes, which is why many heatwave recipes include tomatoes, citrus, yoghurt, herbs and lightly salted ingredients.
What are the biggest heatwave food trends right now?
Current trends include no-cook meals such as ceviche and cold bowls, electrolyte-focused recipes using potassium-rich fruits and natural salts, frozen savoury dishes like tomato sorbet and cucumber granita, viral cooling vegetables such as spiral cucumbers and shaved melon, and herb-heavy plates inspired by Middle Eastern and Southeast Asian cooking. All reflect the same principle: eat light, eat raw, eat hydrating.
