Barometric Pressure
Barometric Pressure in Guernsey
We monitor barometric pressure across 1 city in Guernsey, giving you up-to-date insights into local weather patterns.
Whether you're tracking pressure changes for health reasons, planning outdoor activities, or planning a fishing trip, our data is tailored to conditions in Guernsey, with detailed readings city by city.
Guernsey Barometric Pressure Map
Depending on how many places we monitor in Guernsey, the map displays a sampled set of barometric pressure data to give a clear overview of current conditions.Trends Today
Here you can see which cities experienced the biggest and smallest changes in barometric pressure today. This helps highlight areas with the most stable or unstable weather patterns.
Most volatile
- St. Peter Port: 0.33
Least volatile
- St. Peter Port: 0.33
How is it calculated?
Our volatility “beta” number is generated by an algorithm that analyzes hourly barometric pressure changes. It looks at how much the pressure fluctuates from hour to hour. A beta of 0 means no change, perfectly stable pressure. The higher the decimal value, the more variation there has been throughout the day or over a longer period.
Weather Systems
Guernsey’s air pressure is often shaped by Atlantic weather systems. Low-pressure systems bring wind and rain from the west, while high-pressure systems from Europe can cause clear, calm weather. These systems swap places, changing the local air pressure often.
Geography
Guernsey’s small size and flat land mean the sea has a big influence. The ocean keeps temperatures milder, which stops huge changes in air pressure between land and sea. Coastal winds can shift pressure quickly, but dramatic differences are rare on the island itself.
Seasonal Cycles
In winter, low-pressure systems are more common, bringing stormy weather. In summer, high pressure from the south or east often brings drier, calmer conditions. Spring and autumn switch between these patterns, so air pressure changes more quickly in those seasons.
Climate Change
Climate change is causing more unusual and extreme pressure swings. Storms may get more intense as low-pressure systems strengthen. Sometimes, long stretches of high pressure cause dry spells or heatwaves. These changes mean Guernsey’s air pressure patterns could become less predictable in the future.
Places in Guernsey
You can find your city in the lists below, by using our search, or on the Guernsey Pressure Map above. We're tracking barometric pressure across multiple locations in Guernsey to keep you informed.
Each city includes a pressure status showing whether it's currently high, normal or low, along with two volatility values: one for today and one for the full period, usually 14 days. These help you see how much the pressure is changing over time.
Other
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St. Peter Port
- normal
- 0.33 / 0.32