Belgium generally receives less swell than the Netherlands and the lack of depth offshore robs the swell of some power. A strong NW swell should see consistent jettybreaks like Blankenberge and Oostende get up to shoulder or even head high, but conditions are rarely clean as the onshores are a necessary evil. Summer is usually flat but winter often sees a mixture of short-lived SW swells from lows crossing the UK and NW-N swells coming down from Norway. A split jet in autumn or spring will also liven up the North Sea, but the most important factor is how quickly a swell disappears after the wind stops. Water drops to a chilly 5ºC in February and snowy sand is always a possibility.