Today's barometric pressure in Manchester, 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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Manchester sits in the Merrimack Valley about 80 kilometres from the Atlantic, close enough for coastal storms and far enough inland for continental cold. Its 17 hPa swing range is among the widest measured in this dataset.
Worst season for migraines: February, December and January. Southern New Hampshire sits at the pivot point where coastal storms decide whether to track out to sea or up over land. That uncertainty means the city sees the full range of outcomes, from glancing blows to direct hits, within the same season.
Common triggers in Manchester: Gulf of Maine storm intensification, Merrimack Valley cold air drainage, sharp post-storm pressure rebound. Air funnels between the White Mountains and the coast along the Merrimack Valley, and Manchester sits where that corridor is narrowest. Storms strengthening over the Gulf of Maine pull cold air down the valley behind them, so the temperature and pressure recovery after a storm can be as abrupt as the storm itself.
Typical pressure: Manchester averages 1006 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 985 hPa. Swings of 7-17 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Manchester is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can Manchester weather trigger migraines?
Yes. Manchester experiences 7-17 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Gulf of Maine storm intensification, Merrimack Valley cold air drainage, sharp post-storm pressure rebound.
What time of year are migraines worst in Manchester?
In Manchester the most barometrically volatile stretch of the year falls in February, December and January. 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 Manchester?
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 Manchester 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 Manchester. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Manchester's swings really line up with your attacks, and alerts you when conditions match your own trigger history.