As temperatures rise across the UK, many women notice that their bodies respond differently to hot weather after breast cancer treatment.
Whether you’re navigating fatigue, adjusting to life after surgery, managing ongoing treatment side effects, or living with lymphoedema, a heatwave can bring additional challenges. Swelling may increase, energy levels can dip, and even gentle exercise can feel more demanding than usual.
The good news is that with a few simple adjustments, it’s possible to continue supporting your recovery, maintain your movement routine, and manage lymphoedema effectively during warmer weather.
Why Does Hot Weather Feel Different After Breast Cancer Treatment?
Breast cancer treatment places significant demands on the body. Surgery, chemotherapy, radiotherapy, hormone therapy, and targeted treatments can all affect energy levels, circulation, temperature regulation, and physical wellbeing.
During hot weather, your body works harder to keep itself cool. Blood vessels widen to release heat, which can sometimes contribute to increased swelling and feelings of heaviness.
Many women in breast cancer recovery report:
Increased fatigue
Reduced exercise tolerance
Swelling in the arm, breast, chest wall or hand
Feelings of heaviness or tightness
Difficulty sleeping
Dehydration
These responses are common and do not necessarily indicate a setback in your recovery (however, if you are ever unsure or concerned about new symptoms contact your healthcare team).
Heat and Lymphoedema: What You Need to Know
One of the most common concerns during summer is the relationship between heat and lymphoedema.
Lymphoedema can develop when the lymphatic system has been affected by breast cancer surgery or radiotherapy. When lymph nodes are removed or damaged, lymphatic fluid may not drain as efficiently, leading to swelling in the arm, breast, chest wall or trunk.
Hot weather can sometimes worsen symptoms because heat causes blood vessels to dilate, allowing more fluid to move into surrounding tissues. For women already living with lymphoedema, or those at risk of lymphoedema after breast cancer treatment, this may result in:
Increased swelling
A feeling of fullness or heaviness
Tightness in jewellery, clothing or compression garments
Greater discomfort during prolonged periods outdoors
Not everyone experiences these symptoms, but it is worth being mindful of how your body responds during warmer periods.
Can Exercise Help Lymphoedema?
Yes.
Research increasingly supports the role of exercise in breast cancer rehabilitation and lymphoedema management.
Gentle movement acts like a natural pump for the lymphatic system, helping to encourage lymphatic drainage and reduce fluid build-up. Did you know that the body cleverly positioned our lymph nodes at our joints so that when we move we support the pumping of lymph fluid around the body?!
Activities such as:
Walking after breast cancer treatment
Gentle yoga
Stretching
Mobility exercises
Deep breathing exercises
can all help support healthy lymphatic flow.
The key during hot weather is not necessarily doing less, but adapting your activity to the conditions.
Tips for Managing Lymphoedema in Summer
Stay Well Hydrated. Hydration plays an important role in overall health and lymphatic function.
Many women find that drinking regularly throughout the day helps them feel more comfortable and energised. During particularly hot weather, adding electrolytes can help replace minerals lost through sweating and support hydration more effectively.
Choose Cooler Times for Exercise
Early mornings and later evenings are often the most comfortable times for movement.
If you enjoy walking after breast cancer treatment, consider choosing shaded routes or shortening your walk on particularly hot days.
For those following a breast cancer exercise programme, indoor movement sessions may feel more manageable during peak temperatures.
Continue Wearing Compression Garments
If your lymphoedema specialist has prescribed a compression garment, continue wearing it as advised.
While compression sleeves can feel warm during summer, they play an important role in supporting lymphatic drainage and helping to reduce lymphoedema swelling.
Keep Moving Gently
One of the biggest misconceptions about lymphoedema is that rest is always best.
In reality, regular gentle movement is one of the most effective ways to support lymphatic flow.
A short walk, gentle yoga session, or mobility routine can often be more beneficial than remaining completely inactive.
Listen to Your Body
Breast cancer survivorship is not about pushing through discomfort.
Some days you may feel capable of completing your usual routine. On other days, your body may benefit from slowing down and conserving energy.
Learning to recognise the difference between healthy exertion and excessive fatigue is an important part of long-term recovery.
Gentle Yoga for Breast Cancer Recovery During Hot Weather
Yoga for breast cancer recovery can be particularly valuable during warmer months.
Gentle yoga combines movement, breathing and relaxation techniques that can help:
Improve mobility and flexibility
Encourage lymphatic flow
Reduce feelings of stress and anxiety
Support better posture and shoulder movement
Promote relaxation and sleep quality
On hotter days, a shorter practice focused on breathing, stretching and mindful movement may feel more supportive than a longer or more demanding session.
Supporting Your Recovery Through the Summer
Breast cancer recovery is rarely a straight line. The changing seasons, weather conditions and everyday life all influence how we feel.
If you’re living with lymphoedema or are at risk of developing it, summer simply provides another opportunity to tune into your body’s needs.
By staying hydrated, exercising at cooler times of day, supporting lymphatic drainage through gentle movement, and listening to your body’s signals, you can continue making meaningful progress while staying comfortable and safe.
Remember, recovery isn’t measured by how much you do. It’s measured by the consistent care and attention you give yourself over time.
And sometimes, that means slowing down a little when the temperature rises.
If you are looking for further support in your recovery after breast cancer treatment, please do reach out, I would be very happy to arrange a deepening call to explore how yoga, exercise and wellness practices could support you.
www.gentlerecovery.co.uk