It's a bit hit-and-miss, but probably overall good news. There are long periods when you get days of perfectly flyable weather, at just about any time of year. In fact, winter is the time of year when you get the best flying days.
The bad news is that there are times when you get a whole week or more complete weathered off. There isn't really any way of predicting when this will happen, it can be at any time of year.
Best advice is to make sure you allow yourself plenty of time for weather delays just in case, but with a bit of luck you won't need the extra time. Remember that thousands of people have done VFR courses successfully in the UK, so it's perfectly possible.
Good luck!
FFF
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