To predict the Lukla weather is very hard. It can change in short moment. March to May and September to early December is considering as the best time to go Lukla. Early morning to noon time is the best for the flight to Lukla. So, it is most important to get earlier flight tickets. Sometimes, the flight also can divert from the sky of Khumbu.
Regular changing weather is affecting the trekking schedule of the trekkers. The best time to get in Lukla is in the morning. Because in the morning mostly weather is clean, and also less wind. For more details for weather condition: GO HERE
Here is the average forecast of Lukla Weather.
Note: Precipitation is in mm