Migraines Spike During Summer Heatwaves

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For millions, summer isn't just a season of sunshine and vacations—it's a period of increased migraine attacks. From fluctuating weather patterns to disruptions in daily routines, a complex interplay of factors can turn a relaxing summer day into a painful ordeal. Dr. Oved Daniel, director of the Headache and Facial Pain Clinic at Tel Aviv Sourasky Medical Center, sheds light on the science behind these seasonal spikes and what sufferers can do to find relief.

Why it matters

Migraines affect an estimated one million people in Israel, with women experiencing them three times more often than men. Globally, the World Health Organization ranks migraines as the second-most disabling condition. Many sufferers report both the frequency and severity of their attacks increase during the warmer months, impacting quality of life.

The details

Research increasingly points to a strong connection between weather changes and migraine triggers. A 2024 study revealed that 49% of participants identified weather changes as a key trigger. Specifically, a 26.5% rise in humidity correlated with a 28% increase in migraine likelihood between April and September. Even a 5-degree Celsius (41°F) increase in temperature can raise the risk of an attack by 7.5%, according to a 2009 study from Boston. Fluctuations in barometric pressure can also play a role, potentially altering fluid pressure within the skull and triggering migraines in susceptible individuals. Summer often brings changes to daily life – vacations, travel, and irregular sleep schedules. These disruptions interfere with the body's natural rhythm, increasing migraine susceptibility. In recent years, wildfires have become increasingly common, particularly during summer months. The resulting smoke and air pollution are now recognized as significant migraine triggers. Fine particulate matter (PM2.5) in wildfire smoke can penetrate deep into the lungs and affect the central nervous system.

• A 2024 study revealed that 49% of participants identified weather changes as a key migraine trigger.
• A 2009 study from Boston found that even a 5-degree Celsius (41°F) increase in temperature can raise the risk of a migraine attack by 7.5%.
• A 2018 study in Headache linked high PM2.5 levels from wildfire smoke to increased emergency room visits for migraines.

What they’re saying

What’s next

Individuals can take proactive steps to minimize their risk of summer migraines, such as maintaining a consistent sleep schedule, staying well-hydrated, sticking to regular meal times, protecting themselves from the sun, and planning ahead to avoid exposure to extreme temperatures or stressful changes.