South facing? Was that a typo? You meant to write west-facing, right?JR8 wrote:South facing can get extremely hot during the day, and the heat just carries over into a generally hot unit.
Singapore is basically right on the equator. For six months a year (March through September), you will not get any direct sunshine at all through windows facing south. In the middle of the southern hemisphere summer (i.e., right about now in December), you will get some mid-day sunshine falling onto your floor through south-facing windows, but that is usually not a big deal.
What you really want to avoid in Singapore is a unit facing west. Those can get scorching hot during the afternoon, when the sun blasts straight onto and into your unit. You will have to either close all your blinds during the day or keep the aircon running on high to keep the temperature under control.
Be aware that a common trick by agents and landlords trying to rent out west-facing units is to show them during the morning or evening (or, alternatively, the agent will arrive half an hour early and crank up the aircon to max, to cool down the unit before you show up). So, if you are interested in a particular unit, try to view it at least once during a sunny afternoon, and don't allow the agent to turn on the aircon beforehand, to truly get an idea of how hot the unit can get.
I have lived in a number of Singapore condo units and HDBs over the years. The coolest one I ever lived in, temperature-wise, was a 15th-floor condo unit that faced North-South (i.e., no windows or external walls to either the east or west). That unit received plenty of light through the many windows to the North and South, but very little direct sunshine into the unit. Also, the unit was extremely breezy due to the north-south orientation; both the northeast and southwest monsoon winds would sweep straight through the unit if you simply opened a window on each side of the unit. That has been the only Singapore housing that I have had where I could comfortably leave the aircon turned off for weeks at a time.
So, my recommendation is to look for a south-facing or north-facing unit. Avoid west-facing at almost all cost, and similarly avoid east-facing units unless you are not concerned about bright light in the early morning.