Today's barometric pressure in Gainesville, a 48-hour pressure chart, and a risk score for weather-triggered migraine and headache, based on pressure drops, humidity, and temperature changes.
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Gainesville sits in north central Florida at 54 metres, roughly equidistant from the Gulf and the Atlantic. Pressure averages 1010 hPa, and its inland position means it catches sea breeze fronts from both coasts on the same afternoon.
Worst season for migraines: January through March. Northern Florida sits far enough up the peninsula for winter fronts to reach it regularly, which the southern half of the state does not experience. Those passages give the cool season a clearer barometric rhythm than anywhere further south.
Common triggers in Gainesville: dual coast sea breeze convergence, very high lightning storm frequency, winter fronts reaching the northern peninsula. Sea breeze fronts from the Gulf and the Atlantic move inland from opposite directions each summer afternoon and converge over the interior. Gainesville sits in that convergence zone, which makes it one of the most lightning-prone areas in North America. Each storm produces a small, sharp pressure change, and on active days there may be several.
Typical pressure: Gainesville averages 1010 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 1001 hPa. Swings of 4-7 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Gainesville is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can Gainesville weather trigger migraines?
Yes. Gainesville experiences 4-7 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include dual coast sea breeze convergence, very high lightning storm frequency, winter fronts reaching the northern peninsula.
What time of year are migraines worst in Gainesville?
In Gainesville the most barometrically volatile stretch of the year falls in January through March. That is when weather is most likely to play a part, if weather is a trigger for you at all. See when migraine weather season starts across the U.S.
Is there a barometric pressure headache forecast for Gainesville?
This page works as one. Many people call a headache that arrives with a weather change a barometric pressure headache, and this forecast tracks the pressure drops, humidity and temperature swings behind that idea. The score covers the next 24 hours in Gainesville and the chart shows the next 48. It is built on migraine research, so treat it as a rough guide for other headaches. A sudden, severe headache needs urgent medical care, whatever the weather.
Your own forecast
This page shows the weather risk for everyone in Gainesville. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Gainesville's swings really line up with your attacks, and alerts you when conditions match your own trigger history.