How Much Water is in Watermelon?


Greetings, readers! Are you curious about how much water there is in a watermelon? You might have heard that watermelon is essentially just water, but how much water is in it exactly? In this article, we’ll delve into the science behind watermelon and answer all your questions about its water content. So sit back, grab a refreshing slice of watermelon, and let’s get started!

What Makes Watermelon So Refreshing?

Watermelon, as the name suggests, is primarily made up of water. In fact, more than 90% of watermelon is water. This makes it an excellent fruit to quench thirst and stay hydrated, especially during hot summer months. But watermelon doesn’t just contain plain water. It also has several essential vitamins and minerals, including vitamin C, beta-carotene, and potassium. These nutrients contribute to the many health benefits of watermelon, such as promoting healthy digestion and reducing inflammation.

How Much Water is in Watermelon?

The Science Behind Watermelon’s Water Content

Watermelon’s high water content is due to its unique cellular structure. The fruit is made up of tiny water-filled pockets, which give it its juicy texture and refreshing taste. The watermelon’s water content can vary depending on several factors, including the variety, ripeness, and growing conditions. However, on average, a watermelon is made up of around 92% water.

Measuring Watermelon’s Water Content

Scientists have several methods to measure the water content of fruits and vegetables, including drying, centrifuging, and refractometry. Refractometry is one of the most commonly used methods, which involves shining a light through a small sample of the fruit or vegetable and measuring how much the light refracts, or bends. The amount of refraction correlates with the water content of the sample.

What Affects Watermelon’s Water Content?

Several factors can affect the water content of watermelon. One of the most significant factors is the variety. Some watermelon varieties, such as the Charleston Gray and Crimson Sweet, tend to have a higher water content than others. Additionally, the water content of a watermelon can vary depending on its ripeness. As a watermelon ripens, it loses some of its water content and becomes sweeter. Finally, the growing conditions of the watermelon, such as temperature and humidity, can also affect its water content.

How to Choose a Watermelon with High Water Content

When choosing a watermelon, you might wonder how to pick one with high water content. While there’s no surefire way to know exactly how much water a watermelon contains, there are a few tips to follow. First, look for a watermelon that feels heavy for its size. This indicates that it has a lot of water inside. Additionally, choose a watermelon with a uniform shape and smooth skin, as these are signs of a well-grown and ripe fruit.

The Water Content of Different Parts of Watermelon

While watermelon as a whole is around 92% water, different parts of the fruit can have slightly different water contents. The flesh or pulp of the watermelon is where most of the water is held, while the seeds and rind contain less water. However, the seeds and rind are still edible and nutritious, so don’t be afraid to try them!

How Much Water is in Different Serving Sizes of Watermelon?

The amount of water in watermelon can vary depending on the serving size. Here’s a breakdown of how much water you can expect in different serving sizes:

Serving Size Water Content
1 cup diced watermelon (152g) 143g water, 94%
1 wedge (286g) 264g water, 92%
1 small seedless watermelon (2.8kg) 2.5kg water, 89%
1 large seedless watermelon (4.5kg) 4kg water, 88%

Advantages and Disadvantages of Watermelon’s High Water Content


The high water content of watermelon has several advantages, including:

1. Hydration: As mentioned earlier, eating watermelon is an excellent way to stay hydrated, especially during hot weather.

2. Weight loss: Watermelon is low in calories and high in water, making it a great fruit to incorporate into your weight loss diet.

3. Digestion: The high water and fiber content of watermelon can help promote healthy digestion and prevent constipation.

4. Skin health: The vitamins and antioxidants in watermelon can help keep your skin healthy and glowing.


While watermelon’s high water content has many benefits, there are a few potential disadvantages to keep in mind:

1. Diuretic effect: Eating too much watermelon can have a diuretic effect, meaning it can increase urine output and potentially lead to dehydration if not balanced with adequate water intake.

2. Blood sugar levels: Although watermelon is low in calories and sugar, it still contains natural sugars that can affect blood sugar levels. People with diabetes or other blood sugar disorders should monitor their intake of watermelon.

3. Allergies: Some people may have an allergic reaction to watermelon, which can cause symptoms like hives, itching, and swelling.


1. Can you eat watermelon seeds?

Yes, watermelon seeds are edible and nutritious. Many people roast them and use them as a snack.

2. Does watermelon have any nutritional value besides water?

Yes, watermelon also contains several essential vitamins and minerals, including vitamin C, potassium, and beta-carotene.

3. How much watermelon should I eat per day?

There’s no set limit for how much watermelon you should eat per day. However, as with any food, it’s important to practice portion control and balance your intake with a variety of other fruits and vegetables.

4. Does watermelon have any weight loss benefits?

Yes, watermelon is low in calories and high in water, making it a great fruit to incorporate into a weight loss diet.

5. Can watermelon help with hydration during exercise?

Yes, eating watermelon can be a great way to stay hydrated during exercise, as it contains a lot of water and essential electrolytes like potassium.

6. Does watermelon have any side effects?

While watermelon is generally safe to eat, some people may have an allergic reaction to it. Additionally, eating too much watermelon can have a diuretic effect and potentially lead to dehydration if not balanced with adequate water intake.

7. Is it true that watermelon can boost libido?

There is some evidence to suggest that watermelon may have a positive impact on libido, as it contains citrulline, an amino acid that can improve blood flow and potentially enhance sexual function.

8. Can watermelon be frozen?

Yes, watermelon can be frozen. However, the texture may change slightly when it’s thawed, so it’s best to use frozen watermelon in smoothies or other blended recipes.

9. How long does watermelon last in the fridge?

Cut watermelon will last in the fridge for up to 5 days. Whole watermelons can be stored at room temperature for up to a week before cutting.

10. Is it safe to eat watermelon during pregnancy?

Yes, watermelon is generally considered safe to eat during pregnancy. However, it’s important to wash the outside of the fruit thoroughly before cutting to avoid any potential contamination.

11. Can dogs eat watermelon?

Yes, dogs can eat watermelon. However, it’s important to remove the seeds and rind first, as they can cause gastrointestinal issues in dogs.

12. Can cats eat watermelon?

While cats can technically eat watermelon, it’s not recommended as it doesn’t provide much nutritional value for them.

13. Is watermelon a good source of hydration for athletes?

Yes, watermelon can be a great source of hydration for athletes, as it contains a lot of water and essential electrolytes like potassium.


So, now you know all about how much water is in watermelon! It’s clear that watermelon’s high water content is one of its defining features, making it a refreshing and hydrating fruit to enjoy in the summer months. Additionally, watermelon has several health benefits, including promoting healthy digestion and skin health. While there are a few disadvantages to keep in mind, the advantages far outweigh them. So, go ahead and indulge in some juicy watermelon this season!

Take Action Today!

If you’re looking for a healthy and refreshing way to quench your thirst, consider adding watermelon to your summer fruit rotation. With its high water content and essential vitamins and minerals, it’s a nutritious fruit that’s also delicious. So, head to your local grocery store or farmers market and pick up a ripe, juicy watermelon today!


While the information in this article is based on scientific research and expert opinions, it’s important to consult with a healthcare professional before making any significant changes to your diet or lifestyle. Additionally, this article is intended for informational purposes only and should not be taken as medical advice. Always listen to your body and make choices that work best for you.

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