Today's barometric pressure in Savannah, 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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Savannah's coastal Georgia position brings persistent humidity and regular exposure to Atlantic subtropical moisture. The city's low elevation and proximity to warm ocean currents mean even small pressure changes are amplified by the dense, humid air.
Worst season for migraines: December through February. Savannah's coastal position and low elevation make it vulnerable to tropical systems, which can bring a severe single drop. Most pressure drops, though, come with winter fronts from December through February, peaking in January, when 43% of days see a 5 hPa drop. Summer sea-breeze thunderstorms develop almost daily along the barrier islands, but pressure barely moves, 9% of days or fewer in each summer month.
Common triggers in Savannah: Atlantic tropical storm pressure drops, persistent marsh and coastal humidity above 85%, daily sea-breeze thunderstorm convergence. Savannah sits on a bluff above the Savannah River surrounded by thousands of acres of tidal marshland that extend to the barrier islands on the coast. These marshes act as a moisture reservoir, keeping humidity at near-saturation levels for much of the year. The city's historic tree canopy and low-lying terrain create pockets where humid air stagnates, and the coastal orientation means sea breezes push moist, salt-laden air through the city daily.
Typical pressure: Savannah averages 1016 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 990 hPa. Swings of 4-10 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Savannah ranks #78 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Savannah weather trigger migraines?
Yes. Savannah experiences 4-10 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Atlantic tropical storm pressure drops, persistent marsh and coastal humidity above 85%, daily sea-breeze thunderstorm convergence.
What time of year are migraines worst in Savannah?
In Savannah the most barometrically volatile stretch of the year falls in December through February. 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 Savannah?
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 Savannah 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 Savannah. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Savannah's swings really line up with your attacks, and alerts you when conditions match your own trigger history.