Blog

Can Hot Weather Affect Joint Pain? What the Evidence Says

As temperatures rise across the UK, many people report feeling stiffer, achier, or less comfortable in their joints and muscles. While cold weather is often blamed for aches and pains, hot weather can also leave some people feeling less than their best.

But does heat actually affect our joints, or is something else going on?

The answer is more nuanced than many people realise.

What Does the Research Say?

Many people living with joint pain, arthritis, or back pain report that their symptoms change with the weather. However, research has yet to establish a single, clear explanation for why this happens.

Some studies have found links between weather conditions and pain levels, while others suggest the relationship is weak or varies significantly from person to person.

What researchers do agree on is that hot weather can influence several factors that may affect how our bodies feel, including hydration levels, physical activity, sleep quality, and circulation.

The Role of Hydration

One of the most important factors during warm weather is hydration.

Our bodies are made largely of water, and this includes the structures that support movement. Cartilage, which cushions our joints, contains a high percentage of water. The spinal discs that sit between the vertebrae also rely on water to help absorb forces placed upon the spine.

During hot weather we lose more fluid through sweating. If we do not replace these fluids adequately, dehydration can occur.

Even mild dehydration may contribute to:

• Increased feelings of stiffness
• Muscle cramping
• Reduced flexibility
• Fatigue during physical activity
• Greater awareness of existing aches and pains

Summer Often Means More Activity

For many people, warmer weather brings opportunities to spend more time outdoors.

Walking, gardening, sightseeing, travelling, and recreational activities are all beneficial forms of movement. However, sudden increases in activity can place additional demands on joints, muscles, tendons, and ligaments.

Sometimes what feels like “weather-related pain” may actually be the body’s response to doing more than usual.

This is particularly common in the knees, hips, lower back, calves, and feet.

Don’t Overlook Your Footwear

Summer footwear is often chosen for comfort and convenience rather than support.

Flip-flops, thin sandals, and worn-out shoes can alter the way forces travel through the feet and legs. Over time, this may increase strain on the ankles, knees, hips, and lower back.

If you’re planning longer walks or spending extended periods on your feet, supportive footwear can help reduce unnecessary stress on the body.

Travel and Sleep Can Influence How We Feel

Many people experience stiffness during holidays and summer travel.

Long journeys, unfamiliar mattresses, different pillows, and disrupted routines can all affect posture, muscle tension, and sleep quality.

These factors can sometimes contribute more to discomfort than the weather itself.

Practical Ways to Stay Comfortable During Hot Weather

While there is no single solution, a few simple habits may help support comfort and mobility during warmer periods:

💧 Stay well hydrated throughout the day

🚶 Exercise or walk during cooler morning or evening hours

🦵 Take regular movement breaks if sitting for long periods

👟 Choose supportive footwear when walking longer distances

🛏️ Maintain good sleep posture and a comfortable sleeping environment

🌳 Seek shade and avoid prolonged exposure to extreme heat

An Osteopathic Perspective

Osteopathy takes a whole-person approach to health and wellbeing. Rather than focusing solely on a painful joint or muscle, osteopaths consider how factors such as movement, hydration, sleep, posture, activity levels, and lifestyle may influence the way the body functions.

Hot weather may not directly cause joint pain, but it can create circumstances that affect how comfortable and mobile we feel. Understanding these influences can help us make simple adjustments that support our overall musculoskeletal health.

The Bottom Line

Current research does not conclusively show that hot weather directly causes joint pain. However, factors commonly associated with warmer weather—including dehydration, increased activity levels, changes in footwear, travel, and disrupted sleep—can all contribute to feelings of stiffness and discomfort.

By staying hydrated, remaining active, wearing supportive footwear, and listening to your body’s needs, you can help maintain comfort and mobility throughout the summer months.

Evidence Note

Research into weather and musculoskeletal pain remains ongoing. While many people report that weather changes influence their symptoms, scientists have not yet identified a single mechanism that explains why this occurs. Factors such as hydration, physical activity, sleep quality, humidity, and atmospheric pressure may all play a role. As with many aspects of health, individual experiences can vary considerably.

References

1. Arthritis Foundation. Weather-Arthritis Connection.
2. Harvard Health Publishing. Can the Weather Really Worsen Arthritis Pain?
3. Wang L. et al. Associations Between Weather Conditions and Osteoarthritis Pain. Frontiers in Medicine, 2023.
4. Smedslund G. et al. The Association Between Arthritis and Weather. Scandinavian Journal of Rheumatology.

National Library of Medicine (PubMed). Research on weather, musculoskeletal pain, hydration, and joint health.