What time must be avoid for paragliding?

Rain and snow time because a para glider wing is made from fabric, it has the ability to absorb moisture. Moreover, the weight of a para glider wing is critical to it's performance. Flying into heavy rain or snow will weight the wing down and may terminate a flight quickly. A wet wing is also less controllable, less stable and will exhibit less tendency to recover into normal flight. A wind direction that will not allow a take off or landing into the wind, at least generally so tail wind take off are to be avoided at all cast. Assurance that an headwind id not actually a rotor is also critical. High atmospheric instability, indicate in part by overdeveloped cumulus clouds or in worse situations by cumuli nimbus cloud formation. If clouds are any where in sight. Excessive wind speed or gustness 15mph(24km/h) wind is fairly windy for a paragliderand most pilots won't take off in much more wind than that. High winds will also increase the effect of mechanical turbulence. Gusty conditions and will make collapses more likely while in flight. The limit of 15mph is fairly arbitrary and also depends on local parameters.