Anyone from Cape Town?

I'm heading down your way next month and I was wondering what to expect as far as winter weather. Anything I find online says "chilly and rainy, but also warm and sunny." Is it really this varied? I'm going to be in CT the last week of May.. and again for 2 days in June before heading back to the States. What should I expect?

Also, any tips for ensuring a safe vacation? I know windows up/doors locked.. but any other (local) advice?

Thanks / Dankie !