Reading the weather for paragliding
Good decisions start on the ground with the forecast. You don’t need to be a meteorologist, but you need to understand a few key ideas.
Wind
- Speed: most beginners fly in light winds. Check the maximum wind your wing and skills allow. If the gusts approach the wing’s trim speed, stay on the ground.
- Direction: launches face a specific direction. Wind off-axis can create rotor and strong turbulence.
- Gradient: wind is generally stronger higher up. Check the wind at launch height, not only at the valley floor.
Stability and instability
- Stable air resists vertical motion: flights are smooth, with little thermal lift.
- Unstable air supports rising thermals, with turbulence and cloud development.
Forecast models and soundings show temperature and humidity with height and help you estimate stability and cloudbase.
Fronts and pressure systems
- High pressure often brings stable, clear conditions.
- Cold fronts bring strong winds, rain and turbulence.
- Low pressure typically means unsettled weather.
Local wind effects
- Valley winds shift during the day as slopes warm and cool.
- Sea breeze builds on the coast and pushes inland in the afternoon.
- Foehn is a strong downslope wind in mountain regions and can be dangerous.
- Rotor occurs in the lee of ridges and obstacles.
Warning signs
Rapidly growing towering cumulus, dark bases, dust devils, gusty wind, lenticular clouds and wind noise at launch all mean it is time to be cautious.
Tools
Combine forecast models, local weather stations, webcams and local pilots’ advice. Observe the actual conditions before you decide.