Dowlais Pressure & Humidity
Merthyr Tydfil — Barometric Trends
Dowlais Pressure & Humidity Outlook
For Dowlais today, pressure is around 993 mb, notably low for the season, with humidity staying high, so low cloud can feel a little more stubborn at times. That favours a more variable day, with timing and wind making the biggest difference. The range looks fairly wide across the outlook, so the support for settled weather may come and go. A gentle rise later on would slightly favour more settled spells.
Over the coming days, pressure is likely to sit between 996 mb and 1024 mb in the days ahead. Pressure trends higher through the coming days, favouring quieter spells 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
For Dowlais, the forecast is best read as a combination of short-range detail and broader regime. The first few days carry the highest timing confidence, while later periods describe direction and pattern.
- England Climate for regional patterns and seasonal tendencies.
- UK Climate Overview for a national baseline and how regions compare.
- England 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 Dowlais today?
Right now, Dowlais is near 993 mb for atmospheric pressure. It helps describe the broader set-up, while cloud, fronts and local effects still decide the day-to-day detail. Relative humidity is around 96%, meaning the air is very moist; in calmer spells, low cloud or a touch of mist becomes more likely. Looking further ahead, pressure edges higher overall, which can favour a steadier background later in the period.
What counts as high or low pressure in the UK?
There is no single cut-off, but as a practical UK guide: the low 1020s (around 1020 mb–1024 mb) often leans more settled, while the low 1000s (around 1000 mb–1004 mb) is more commonly tied to Atlantic lows nearby. The pressure gradient and the direction of travel are usually more telling than the exact number.
How does pressure affect wind in Dowlais?
It is not the absolute pressure that matters most, but how steeply it changes from place to place. A sharper gradient can bring brisk winds; a weaker gradient tends to keep winds lighter.
Does low pressure always mean rain in Dowlais?
It can raise the risk of showers or rain, but it does not guarantee it. The detail depends on fronts, moisture supply and how the system moves through the region.
What does humidity mean for comfort in Dowlais?
Humidity describes how close the air is to being saturated. Higher humidity can feel clammy and can support haze or low cloud in calmer conditions; lower humidity often feels crisper and helps things dry more quickly. Humidity also runs high on average, which can make low cloud or hazier spells more likely when winds are light, especially overnight.