10 Foods High in Water Content: The Best Hydrating Foods to Add to Your Plate

Roughly 20 percent of daily fluid intake comes from food rather than beverages, according to the Harvard T.H. Chan School of Public Health. Fruits and vegetables with a water content above 90 percent contribute meaningfully to hydration, and because they arrive packaged with fiber, potassium, and other electrolytes, they can support fluid balance more effectively than water alone, especially after exercise or in hot weather. The Mayo Clinic notes that these foods also tend to be lower in calories relative to their volume, which is part of why they show up so often in weight management advice.

Below are 10 of the most water-dense foods available, along with what else they bring to the table beyond hydration.

Top Hydrating Foods High in Water Content

1. Cucumber: The Most Water-Dense Common Vegetable

Cucumber tops nearly every water content chart at around 96 percent water by weight, with very few calories to go along with it.

Best eaten: sliced into water or salads, or as a crunchy, low-calorie snack with hummus.

2. Iceberg Lettuce: A Crisp, Nearly-All-Water Green

Iceberg lettuce gets a bad reputation for being nutritionally thin, but its 96 percent water content makes it a genuinely useful hydration source, especially layered into sandwiches and wraps.

Best eaten: as a base for salads or wraps, paired with more nutrient-dense vegetables.

3. Celery: A Crunchy, Electrolyte-Carrying Hydrator

Celery’s high water content comes paired with a natural source of sodium and potassium, both electrolytes lost through sweat.

Best eaten: raw with nut butter or hummus, or chopped into soups and stir-fries.

4. Watermelon: The Classic Hydrating Fruit

Watermelon lives up to its name at about 92 percent water, and it also delivers a meaningful dose of lycopene, the antioxidant that gives tomatoes their red color too.

Best eaten: chilled, or blended with a pinch of salt and lime for a natural electrolyte drink.

5. Strawberries: A Water-Rich, Antioxidant-Dense Berry

Strawberries carry about 91 percent water alongside one of the higher vitamin C contents of any common fruit.

Best eaten: fresh, sliced into yogurt or oatmeal, or frozen into a naturally sweet treat.

6. Zucchini: A Mild, Versatile Hydrating Vegetable

Zucchini’s roughly 94 percent water content makes it a light addition to almost any cooked dish, and its mild flavor blends easily into both savory and baked recipes.

Best eaten: spiralized into noodles, grilled, or shredded into baked goods.

7. Tomatoes: A Water-Rich Fruit With Lycopene

Tomatoes hold about 94 percent water and are one of the most concentrated dietary sources of lycopene, particularly when cooked.

Best eaten: fresh in salads, or cooked into sauces, which actually increases usable lycopene.

8. Bell Peppers: A Crunchy, Vitamin-Rich Hydrator

Bell peppers carry roughly 92 percent water and one of the highest vitamin C contents of any vegetable, red and yellow varieties especially.

Best eaten: raw with dip, or roasted as part of a vegetable medley.

9. Cantaloupe: A Sweet, Water-Dense Melon

Cantaloupe’s roughly 90 percent water content pairs with a very strong vitamin A and vitamin C profile, making it one of the more nutrient-dense melons.

Best eaten: chilled by the cup, or cubed into fruit salads.

10. Grapefruit: A Tangy, Hydrating Citrus Fruit

Grapefruit is around 88 percent water and, unlike many other high-water fruits, brings a substantial amount of fiber along with it, which slows digestion and helps with fullness.

Best eaten: fresh at breakfast, though check with a pharmacist first if you take medication, since grapefruit can interact with certain drugs.

Quick Reference: All 10 Foods at a Glance

5 Tips for Using Food to Stay Hydrated

• Start meals with a water-rich vegetable or fruit, like a cucumber salad or sliced melon, especially in hot weather or after a workout.
• Water-rich foods aren’t a replacement for drinking water, but they stretch your fluid intake further and add electrolytes, fiber, and vitamins that plain water doesn’t provide.
• Soups and broths count too. A vegetable-based soup can be over 90 percent water while also delivering a full serving of vegetables.
• Frozen fruit, like grapes or berries, makes a slower-melting, hydrating snack that lasts longer than a quick gulp of water.
• Pay attention to thirst and urine color as your best everyday hydration indicators; the Mayo Clinic notes pale yellow urine is generally a sign of adequate hydration.

The Bottom Line

Water-dense fruits and vegetables are an easy, nutrient-packed way to support daily hydration alongside drinking water, and most of them double as low-calorie, high-volume foods that support weight management too.

This article is for informational purposes and is not a substitute for personalized medical advice. Nutrition data sourced from USDA FoodData Central.

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