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Does sudden weather changes make you sick?

MBBS
Medically Reviewed by MBBS ✓ Medically Reviewed
📅 Updated: Jul 14, 2026 • ⏱ 6 min read • Editorial policy
Does sudden weather changes make you sick?
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The weather is amazing right now, isn't it? It's hot in the morning, but by four or five in the afternoon, the sky suddenly turns dark, and a cold wind blows, accompanied by heavy rain. Sometimes it's cold for two or three days in a row, and the next day it's unbearable heat. Have you ever wondered how such sudden temperature changes really affect our bodies? There's more to it than just catching a cold. So today, let's talk about the relationship between this sudden change in weather and our health.

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Why do these weather changes feel so bad?

Simply put, our bodies are amazing machines that constantly strive to maintain balance . In particular, our bodies constantly strive to maintain a certain internal temperature. Our bodies usually need a few days or a week or two to acclimatize to changes in our environment.

Imagine the discomfort you feel when you suddenly go from a cold room to a sunny one. In the same way, when the temperature changes by a few degrees Celsius during the day, it feels like a big "jolt" to our bodies. Our body systems don't have enough time to adjust to this sudden change.

This change may not be noticeable to a healthy, young person, but it can be a bit risky for people with chronic illnesses , those who work outdoors, the elderly, and young children.

What are the main health problems associated with climate change?

These sudden temperature changes can affect various parts of our body. Our nose, throat, and heart are especially sensitive to this. Let's see what are the most common problems we see.

Medical condition Common symptoms
Sinusitis and colds Runny nose, stuffy nose, pain or heaviness in the sinuses, and post-nasal drip.
Allergies Itchy nose and eyes, sneezing, stuffy nose, or a watery discharge from the nose.
Heart problems Both extreme cold and extreme heat increase the risk of death from cardiovascular events such as heart attack and stroke.

What's happening to your nose?

The nose is one of the main organs that shows changes in our health when the weather changes. Imagine, there are very fine blood vessels inside our nose.

  • In cold weather: These blood vessels constrict , which can cause the inside of the nose to become dry.
  • In hot, humid weather: These blood vessels dilate , which can increase nasal discharge.

Now imagine what happens when the temperature changes from cold to hot and from hot to cold in a short period of time, like 24 hours. It's like the blood vessels in our nose go crazy. One moment our nose is dry, and the next moment it starts to run. This is what we feel like the symptoms of a cold.

Who is particularly at risk? What should we do?

As we've talked about before, this doesn't affect everyone the same way.

  • People with chronic diseases: If you have diseases like asthma , heart disease, or diabetes , you should be very careful during these weather changes, as these sudden changes can worsen your condition.
  • Elderly people: As they age, their body's ability to regulate temperature decreases, so they may have difficulty coping with these changes.
  • Young children: Because young children's body systems are not yet fully developed, it is also difficult for them to quickly adjust to these changes.
  • People who work outdoors: People who frequently work in the sun and rain are also at increased risk of developing various health problems due to these sudden temperature changes.

It's important to listen to your body during times like these. Don't ignore a little cold or a feeling of being unwell.

  • For cold days: Dress warmly. It's also good to drink a hot drink.
  • On hot days: Drink plenty of water. Dehydration (Don't let dehydration happen. Wear light, cotton clothes.
  • If you have allergies, it's a good idea to limit your exposure to areas with high levels of dust and pollen during this time.

In some severe weather conditions, for example, heavy rain, flooding, or landslides, it may be difficult to even get to a hospital or Emergency Treatment Unit (ETU) . Therefore, if you have a chronic illness, it is very important to keep the necessary medications with you.

If you experience any serious symptoms, such as chest pain, difficulty breathing, or severe headache, the best thing to do is to seek medical advice immediately . Don't stay home during these times. See your doctor immediately.

💡 Take-Home Message

  • Take a little extra care of your body on days when the weather changes suddenly.
  • It is very important to stay warm in cold weather and hydrated in hot weather.
  • If you have a chronic condition like asthma, heart disease, or diabetes, you need to be especially careful during times like these.
  • If symptoms like runny nose, sneezing, and feeling unwell persist for more than a few days or become severe, be sure to see your doctor.
  • If you experience sudden chest pain or difficulty breathing, go to a hospital emergency room (ETU) immediately.
❓ FAQ

FAQ

Evidence-based clinical answers to common patient questions

What's happening to your nose?

The nose is one of the main organs that shows changes in our health when the weather changes. Imagine, there are very fine blood vessels inside our nose.

  • In cold weather: These blood vessels constrict , which can cause the inside of the nose to become dry.
  • In hot, humid weather: These blood vessels dilate , which can increase nasal discharge.

Now imagine what happens when the temperature changes from cold to hot and from hot to cold in a short period of time, like 24 hours. It's like the blood vessels in our nose go crazy. One moment our nose is dry, and the next moment it starts to run. This is what we feel like the symptoms of a cold.

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⚠️ Important: Medical articles and information on Nirogi Lanka are strictly for educational and awareness purposes and do not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified physician for any medical concerns.