Annual observance

National Hydration Day

June 23 Health / Wellness Updated 2025-12-17

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Overview

National Hydration Day, observed annually on June 23rd, is dedicated to raising awareness about the critical importance of proper hydration for maintaining overall health and well-being. It encourages individuals to make conscious efforts to drink enough water throughout the day, especially during warmer months, to support essential bodily functions, boost energy levels, and prevent the adverse effects of dehydration.

Observed each year on June 23, National Hydration Day invites people to pause, share the story, and bring a little themed joy to their day.

Why it matters: National Hydration Day on June 23 emphasizes the vital role of hydration in supporting bodily functions and overall health. By promoting awareness of proper water intake, this day serves as a reminder to prioritize hydration, especially in warmer weather, to enhance energy levels and prevent dehydration-related health issues.

Origin and story

The adult human body is composed of approximately 55-60% water.

Even mild dehydration can impair mood, concentration, and physical performance.

Quick facts

  • DateJune 23
  • TypeHealth / Wellness
  • Great forWellness groups, Gyms, Health classes

Also on this date

Ways to celebrate

  • Share one healthy habit you’re keeping this week.
  • National Hydration Day lands on June 23 — host a quick nod with Wellness groups, Gyms and snap a photo.
  • Prep a simple, nutritious snack to match the day.
  • Plan a 10-minute activity that fits the health / wellness vibe and make it a mini tradition.
  • Share one fast fact about National Hydration Day: The adult human body is composed of approximately 55-60% water.

Fun facts

  • The adult human body is composed of approximately 55-60% water.
  • Even mild dehydration can impair mood, concentration, and physical performance.
  • Beyond plain water, fruits and vegetables like watermelon, strawberries, and cucumbers have high water content and contribute significantly to daily fluid intake.

Sources and attribution

Primary note: The adult human body is composed of approximately 55-60% water.


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FAQ

When is National Hydration Day?
It is observed on June 23 each year.
What is National Hydration Day?
National Hydration Day, observed annually on June 23rd, is dedicated to raising awareness about the critical importance of proper hydration for maintaining overall health and well-being. It encourages individuals to make conscious efforts to drink enough water throughout the day, especially during warmer months, to support essential bodily functions, boost energy levels, and prevent the adverse effects of dehydration.
How do people celebrate National Hydration Day?
Share one healthy habit you’re keeping this week.

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