South Singapore
City weather
Downtown core. Urban heat island can keep nights a degree or two warmer than the suburbs.
How rain usually arrives here
The downtown core holds heat after sunset. Nights are often a degree or two warmer than Mandai or the islands. Afternoon sea-breeze storms can fire along the south coast and clip the CBD even when inland nowcasts still say Fair.
A cell on the 50 km radar over the southern towns can be on Sentosa in minutes. Lightning, not just rain, is the outdoor stop.
South Singapore
The south coast and downtown sit in the urban heat island and in the sea-breeze clock. Afternoon storms often fire just inland of the Strait. Nights in the city stay a degree or two warmer than Mandai.