Naturally, it is variable. The weather you experience will depend upon luck. If it is going to rain at any time during the year here, it will probably be during the months of December, January and February. But since we get so little rain, you have a pretty good chance of not seeing any. And, unless it is raining, it is likely to be very dry. (My wife, a native of southern California, complains about humidity here and all I can do is
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) Temperatures are likely to be between 10 and 20 degrees Celsius. Maybe a little higher; maybe a little lower. Even though the period you're planning on visiting us is when we get our "weather", weather here doesn't really vary all that much.