Check out this wind graph for Wednesday 25th November. The forecast was for gale force winds. Some kitesurfers were at Brighton when one of the massive gusts came in, one with a large kite up close to shore. They were very lucky to avoid a serious injury. The maximum gust was 54 knots!
Today it was gusty again but manageable with a small kite (e.g. 7 metres)
Be careful, check forecasts carefully, and if in doubt don't go out!
This article has more advice on this topic: Kitesurfing storm fronts (Kitesurfing Handbook)