Weather is probably a major factor when you plan your trip to Ayer Keroh, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April, with an average temperature of 27°C, while the coldest months are January and February, with an average of 27°C. The rainiest months in Ayer Keroh are November, December, October and May, with each month seeing an average of 260 mm of rainfall.