South Singapore
Southern Islands weather
St John's, Kusu and neighbouring islets. Maritime climate, stronger sea breeze.
How rain usually arrives here
The southern islets are maritime: stronger breeze, less heat island, and nowhere to hide from lightning. Check the south-coast nowcast and the 50 km radar before a landing. A cell over Sentosa is already too close.
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.