Meteorological agencies are tracking a broad low-pressure area that could influence rainfall patterns across parts of Southeast Asia.
Singapore's weatherman said local impact remains uncertain, though short thundery showers are expected on some afternoons this week.
Shipping operators have been advised to monitor updates for potential changes to port schedules.
Meteorologists in Malaysia and Indonesia are coordinating satellite observations to track the system's movement across the South China Sea. Early models suggest the feature may bring increased cloud cover rather than sustained heavy rainfall over Singapore.
Outdoor event organisers have been advised to prepare contingency plans for lightning risk during afternoon hours. The Urban Redevelopment Authority said construction sites should secure loose materials and verify that drainage channels remain clear ahead of expected showers.
Residents can check the National Environment Agency website for hourly forecasts and haze readings, which remain within moderate bands at the time of reporting.