South Singapore
Kallang weather
South-central basin. Afternoon sea-breeze storms can build along the south coast.
How rain usually arrives here
Kallang sits in the south-central basin, close enough to the coast for sea-breeze storms and close enough to the city for heat-island nights. Stadium and sports events here should watch lightning, not just rain chance.
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.