The pressure in Jamestown, Saint Helena, Ascension and Tristan da Cunha is predicted to rapidly rise over the next few hours, with an average pressure of 1016.1 hPa today, which is considered normal.
Weather prediction: Expect shortly fair weather and gale or storm winds
The daily total fluctuation in pressure in Jamestown is 3.5 hPa, with a low of 1014.6 hPa and a high of 1018.1 hPa. The daily average here is higher than in most cities around the world.
The barometric pressure in Jamestown, Saint Helena, Ascension and Tristan da Cunha tends to be generally stable throughout the year. It ranges between 1015 and 1025 millibars. The weather in Jamestown is influenced by the trade winds and the seasons are not extreme. Summers are warm and winters are mild.
Jamestown is located in a valley, surrounded by steep mountainous terrain. This landscape acts as a barrier to the wind and helps maintain stable atmospheric pressure. The high peaks create a windbreak effect, protecting the town from strong gusts. As a result, the barometric pressure in Jamestown remains relatively constant, making it a pleasant place to experience consistent weather patterns.