Carncastle Pressure & Humidity
Mid and East Antrim — Barometric Trends
Carncastle Pressure & Humidity Outlook
For Carncastle today, pressure is around 1004 mb, slightly on the low side, with humidity running high, so it can feel a bit close at times. That hints at a more mixed backdrop at times, especially if the breeze freshens. Conditions can feel a bit stop–start at times, with the broader signal shifting across the period. Easing lower later can keep things more mixed at times.
Looking ahead, pressure is expected to range between 987 mb up to 1013 mb during the period ahead. Pressure is projected to edge lower through the period, which can encourage a more changeable feel at times. Humidity looks generally high, which can help low cloud to linger in calmer spells.
Current Readings
Pressure
Humidity
Dew Point
Today’s Hourly Humidity
Today’s Hourly Pressure
14-Day Trends
Humidity Chart
Pressure Chart
Forecast context and reference links
Across Northern Ireland, local effects can shift outcomes even when the national pattern is similar. Coastal exposure, terrain, and airflow direction often explain the difference between a near-miss and a wet day.
- Northern Ireland Climate for regional patterns and seasonal tendencies.
- UK Climate Overview for a national baseline and how regions compare.
- Northern Ireland for location browsing and regional navigation.
How to interpret confidence
For how forecast reliability changes with lead time, see Forecast Confidence. For transparency on how WeatherEngland sources and updates data, see Methodology.
Background guides
- UK Weather Patterns
- UK Seasonal Weather
- UK Weather Hazards
- UK Weather Safety
- UK Jet Stream
- UK Microclimates
Glossary support
Start with the Weather Glossary. Useful terms for this page include Isobar, Pressure Gradient, Relative Humidity, Dew Point, Anticyclone, and Depression.
FAQ
What is the air pressure in Carncastle today?
Atmospheric pressure in Carncastle is currently around 1004 mb. Think of it as the background state of the atmosphere; the timing of cloud and rain still depends on the next weather system. Looking further ahead, pressure eases lower overall, which can keep the broader pattern more changeable at times.
What counts as high or low pressure in the UK?
As a rough guide, the low 1020s (around 1020 mb–1024 mb) tends to be a more settled signal, while the low 1000s (around 1000 mb–1004 mb) more often points to Atlantic influence. The overall pattern matters more than any single reading.
How does pressure affect wind in Carncastle?
Wind strength is driven mainly by the pressure gradient — how quickly pressure changes over distance. Tightly packed isobars usually mean stronger winds; a slack pattern often allows lighter winds, regardless of whether the headline pressure is high or low.
Does low pressure always mean rain in Carncastle?
No. Low pressure increases the chance of changeable weather, but the wettest rain bands can miss your area entirely depending on where fronts set up.
What does humidity mean for comfort in Carncastle?
It reflects how much moisture the air is holding compared with its maximum. Higher values can favour haze or low cloud, especially when winds are light. Humidity is frequently elevated through the period, which can keep the air feeling damp and occasionally reduce visibility in lighter winds.