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Barometric Pressure in Sao Tome and Principe

We monitor barometric pressure across 1 city in Sao Tome and Principe, giving you up-to-date insights into local weather patterns.

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Whether you're tracking pressure changes for health reasons, planning outdoor activities, or planning a fishing trip, our data is tailored to conditions in Sao Tome and Principe, with detailed readings city by city.

Sao Tome and Principe Barometric Pressure Map

Depending on how many places we monitor in Sao Tome and Principe, the map displays a sampled set of barometric pressure data to give a clear overview of current conditions.

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

Least volatile

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

Air pressure in São Tomé and Príncipe is mainly shaped by the Intertropical Convergence Zone (ITCZ), a belt of low pressure near the equator. This system brings clouds and rain when it sits over the islands. Sometimes, winds from the south, called monsoon winds, also affect pressure.

Geography

The islands are small and close to sea level, so geography does not create big differences in air pressure across them. Surrounded by the Atlantic Ocean, the temperature of the sea helps keep the pressure more stable than in places far from water.

Seasonal Cycles

Pressure changes with the seasons. From October to May, the ITCZ stays nearby, keeping the pressure low and bringing rain. During June to September, the ITCZ moves north, making pressure a little higher and weather drier.

Climate Change

Climate change can disturb these normal pressure patterns. As the world gets warmer, the ITCZ could shift more often, making dry and rainy seasons less predictable. This could cause more unexpected changes in storms and rainfall.

Places in Sao Tome and Principe

You can find your city in the lists below, by using our search, or on the Sao Tome and Principe Pressure Map above. We're tracking barometric pressure across multiple locations in Sao Tome and Principe 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.

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