In the year end months, Singapore experiences thundery showers mainly in the afternoon and early evening. Based on long-term statistics, November is the second wettest month in the year after December. Temperature ranges between 24 and 30 Degree Celsius.
So if you are headed to Singapore during this period, be sure to do most of your outdoor activities in the morning! And bring a brolly or poncho!
Hit the malls if you want to stay dry. Most of the malls in Orchard Road are linked either by bridge or underground, or linked to a mrt station, so its possible to go mall hopping and still stay dry!