Yesterday I posted on Facebook about the shift from southwest monsoon to southeast monsoon in Singapore originating from Sumatra, Indonesia. The transition from southwest monsoon in June-July to northeast monsoon in December-January appears to happen around September.
This morning, torrential rain brought by prevailing winds from Sumatra (otherwise known as Sumatra squall) came visiting Singapore again. Though the wind directions in Singapore shown in the weather app by National Environment Agency appear haphazard, the rain seems to be moving from southeast to northwest, as shown below.
How will this knowledge help us?
For me, it can help me plan my route if I want to cycle from the western towards the central or eastern part of Singapore during this time. I can ask myself: Which route shall I take to avoid the brunt of the storm as much as possible? When would be the best time to start my journey?
Nature and Us 