Was there this year at that time (Jan) and found the weather just great. Cool temperatures for sleeping at night and mid 80's and sunny during most of the day. The northers refers more to cooling winds but can include rain. The rain usually doen't last very long and then the glorious sun shines through. All in all, it is the perfect time to go and enjoy whatever the weather brings.
Weather patterns have been changing a lot recently and it is becoming more and more difficult to rely on past patterns.
Go and enjoy yourselves,