If you ask me about Mui Ne kitesurfing season then my answer is: There are two kite seasons in Mui Ne. I mean you can play kitesurfing all year round.
The South Wind Season and the North wind season

The South Wind Season
This season begin from May to September in year. The wind blows from the south of Vietnam.
Wind Speed: around from 14 – 22 knots
Kite Using: 10m, 11m, 12m,14m
Water condition: flat water, small waves and green sea
Weather: some time raining and storm
In summary: This season good for beginner, the wind in week is less than North season, Rain suddenly
The North Wind Season
Begin from October to April in year. The wind blows from the north of Vietnam.
Wind Speed: around from 17 – 35 knots
Kite Using: 7m, 8m, 9m, 10m, 11m, 12m
Water condition: Big waves, Choppy
Weather: a little bit cold
In summary: This season good for all levels, there is a lot of wind in week. Strong and regular wind.
Keep in mind: You can play kiteboarding all year round but there will no wind in some day of week, so just prepare for that.
WhatsApp Me: +84906383705 to Booking your kiteboarding lessons in Mui Ne.