What to Eat When It’s Hot: Foods That Can Help You Stay Cool and Hydrated

When temperatures soar, many of us focus on staying cool by reaching for fans, cold drinks and shady spots. But what we eat can make a surprising difference to how we feel during a heatwave too.

If you’ve ever found yourself feeling sluggish after a heavy lunch on a scorching day, there’s a good reason for it. Hot weather places additional demands on the body, increasing fluid loss through sweat and often reducing appetite at the same time. Choosing foods that are naturally hydrating can help you stay more comfortable when the mercury climbs.

So, what should be on your plate during a heatwave, and what might be better saved for cooler days?

Water-Rich Foods That Help You Stay Refreshed

One of the easiest ways to increase your fluid intake isn’t through a bottle of water alone. Many fruits and vegetables are packed with water and can contribute to hydration throughout the day.

Watermelon

A summer favourite for good reason, watermelon is made up of more than 90% water. Sweet, refreshing and easy to eat when you’re not feeling particularly hungry, it’s an ideal snack during hot weather.

Cucumber

Few foods are as cooling as cucumber. Whether sliced into salads, added to sandwiches or enjoyed as a simple snack, its high water content makes it a natural choice during a heatwave.

Melon

From honeydew to cantaloupe, melon varieties are packed with water and offer a naturally sweet alternative to sugary snacks.

Citrus Fruits

Oranges, grapefruits and other citrus fruits provide hydration alongside vitamin C and other nutrients. Served chilled, they can be particularly refreshing on hot afternoons.

Tomatoes

Tomatoes are often overlooked as a hydrating food, but their high water content makes them a useful addition to summer meals. Add them to salads, wraps or enjoy them as a quick snack.

Grapes

A bowl of chilled grapes can be one of the most refreshing snacks during hot weather. Try freezing them for an even cooler treat.

Celery

Crunchy, light and packed with water, celery is easy to add to lunches and grazing platters when the temperature rises.

Light Meals Often Feel Better Than Heavy Ones

Heatwaves can make large meals feel less appealing. Many people naturally gravitate towards lighter foods that are easier to digest.

Simple combinations such as apple slices with cottage cheese or fresh pineapple with a protein-rich snack can provide energy without leaving you feeling overly full.

Cold pasta salads, grilled chicken, fresh fruit platters and yoghurt-based breakfasts can also feel more manageable than hot, heavy meals when the weather is at its warmest.

The Foods That Can Feel Harder to Handle in Hot Weather

While there’s no need to ban any particular food, some choices may leave you feeling less comfortable when temperatures climb.

Fried and Greasy Foods

Burgers, fried chicken, greasy takeaways and heavily fried foods can take longer to digest. During hot weather, many people find these meals leave them feeling sluggish and uncomfortable.

Rich Curries and Heavy Dishes

Spicy and rich meals may increase feelings of warmth for some people, particularly when eaten during the hottest part of the day.

Salty Snacks

Crisps and heavily salted snacks can increase thirst and make it harder to stay comfortably hydrated if you’re not replacing lost fluids.

Cured Meats

Foods such as salami, pepperoni and other cured meats tend to contain higher levels of sodium, which may contribute to dehydration if consumed in large quantities.

Don’t Forget About Hydration

While food can help, staying hydrated remains the most important factor during a heatwave.

Water should remain your primary source of hydration, but foods with a high water content can play a supporting role. Keeping a reusable water bottle nearby, limiting excess alcohol and paying attention to signs of dehydration can all help you stay well during periods of extreme heat.

Listen to Your Body

Perhaps the most important advice during a heatwave is not to force your usual routine.

Your appetite may change. You may feel less inclined to cook. You may want lighter meals than normal. That’s perfectly natural.

By focusing on hydrating foods, eating according to your appetite and giving yourself permission to slow down when temperatures peak, you can help your body cope with the demands of hot weather and enjoy summer a little more comfortably.

With expert insight from Dan Osman, Health and Wellbeing Consultant and Performance Nutrition Specialist at Prep Kitchen.