Reading the YouTube post the flight appears to be 25th July at approx 8:15. From the data I can find, conditions appears to be: -
8:20 AM
Temp 17.0 °C
Dew point 14.0 °C
RH 82%
Pressure 1018 hPa
Visibility 10.0 km
Wind dir Variable
Speed 5.6 km/h / 1.5 m/s
Gust speed -
Precip N/A
Events Unknown
Conditions Clear