The weather in the Netherlands is, like all countries in western Europe, under the strong influence of the effects of the conveyer belt . Europe's climate wouldn't have been as mild as it is now, regarding the high latitude it is located. For now Dutch climate is very similar to that of the UK, with cool summers and mild winters, although it receives more rain, actually, than the British isles do. Yet, it is dull, boring and utterly boring. I'll be the first to admit, though, that this, alas, is very true.
Rain is possible no matter what the season, no matter what the time of day.
But it is most likely to start just as you leave your house. Drinking habits To maintain that Dutch drink nothing except beer would be a severe exaggeration. The national drink in Holland is coffee, preferably very strong and hot, served in large quantities. If you want a pint, order a pint. Another thing that differs is the frothy head.