Managing Lymphedema in Hot Weather

Hot weather can make lymphedema swelling worse, because heat causes blood vessels to widen and more fluid to pool in the tissues. The good news is that with a few adjustments you can stay comfortable all summer: keep cool, stay hydrated, keep wearing your compression in most cases, protect your skin, and time activity for the cooler parts of the day.

Why heat affects lymphedema

When you get warm, your blood vessels dilate to release heat. That can send more fluid into the tissues, which a healthy lymphatic system clears easily but an impaired one struggles with. The result can be more swelling on hot days. Knowing this helps you plan around it.

Should you still wear compression in summer?

In most cases, yes. Compression continues to do its job in the heat, and stopping can allow swelling to build. Choose garments made from breathable, moisture-wicking fabric to stay cooler and drier, and keep a clean rotation so you always have a fresh one to put on.

Staying cool

• Seek shade and air conditioning during the hottest hours.
• Use cool (not ice cold) water to bring your temperature down.
• Wear light, loose clothing over your compression.
• Avoid hot tubs, saunas, and very hot baths, which can worsen swelling.

Protecting your skin

Summer brings sun and bugs, both of which can compromise your skin. Sunburn and insect bites create openings for infection, which is a particular concern with lymphedema. Use sunscreen, apply insect repellent, and keep moisturizing so skin stays intact.

Hydration and activity

Drink plenty of water throughout the day, since good hydration actually helps your body manage fluid. Go easy on very salty foods and alcohol. And schedule walks or workouts for the cooler morning or evening hours rather than midday heat.

Frequently asked questions

Does heat really make lymphedema worse?

It can. Heat widens blood vessels and can increase fluid in the tissues, which may lead to more swelling. Staying cool and hydrated helps counter this.

Should I take my compression off when it is hot?

Usually not. Compression still helps in the heat, and removing it can let swelling build. Breathable, moisture-wicking garments keep you cooler while staying protected. Follow your therapist's guidance.

Are hot tubs and saunas safe with lymphedema?

They are generally best avoided, since prolonged heat can worsen swelling. If you are unsure, ask your therapist.

How do I keep my skin safe in summer?

Use sunscreen to prevent burns, apply insect repellent, moisturize daily, and treat any cut or bite promptly, since skin breaks can lead to infection.

This article is for general education and is not medical advice. Please follow the guidance of your physician or lymphedema therapist. Trusted resources include the Lymphatic Education and Research Network (LE&RN) and the National Lymphedema Network.

Written by the LympheDIVAs team. We have made beautiful, medical-grade compression for people living with lymphedema since 2006.