I have enough experience with mountain hiking, but in the area where I live (the Alps), the wind rarelly gets extremelly strong, so I have no idea about judging when it is actually unsafe to hike because of high wind speeds.
This winter I was in Tenerife, where I have attempted to climb Mount Teide. Due to public transport limitations I have decided to divide my climb into two days, and spend the night in the hut. On the first day, the wind was already very strong, but being sheltered by the side of the mountain, I had no problems reaching the hut. The people coming back from the peak, however, were all talking about how much trouble they had on the more exposed parts of the mountain.
I was hoping the conditions would get better on the following day. But in the morning the wind picked up even more. It was constantly between 90 and 100 km/h. Since there also was a thick fog, and I would have seen absolutelly nothing from the top of the mountain, I have decided to give up, and head down instead.
Ever since I have been wondering: had I decided to push on to the top, would it have been dangerous? What wind speed is too high for mountain hiking?
Edit as an answer to comments:
There was no snow or ice, so avalanche or slipping dangers were not an issue. The path itself was not technically challenging on its own (in good weather conditions tourists do the last bit after taking a gondola). The climb was super exposed though: no vegetation or shelter at that altitude, and Tenerife being an island, the winds come directly from the ocean. As I haven't been to the top, I am not able to tell how risky a potential fall would have been, but let's assume that like in most places in the mountains, there were at least some spots where the path was passing close to cliffs.
Actually, I do not want to make the question too tailored to this specific situation, because I prefer the answer to be usable in future situations I (or somebody else) will have in the mountains. All I want to know, if there is a specific estimate, how strong should a wind be, to be able to blow an average adult person off a cliff. I do understand that in specific situations where balancing is important (ridge crossing, scrambling or other technical climbing, etc) the safe wind speeds are surelly much lower.