Monsoon Types

The Southwest Monsoon prevails during this period, characterized by winds blowing mainly from the southeast or southwest, bringing moist air and triggering convective activity :cite[7].

South West Pacific 500mb Winds

Upper-level wind patterns over the South West Pacific influence weather systems and moisture transport toward Singapore, affecting rainfall distribution and intensity.

East Indian Ocean SST

Sea surface temperatures in the East Indian Ocean influence moisture availability and convective potential, with warmer temperatures contributing to increased rainfall intensity in the region.

Topological Influences

Singapore's island geography and urban heat island effect create localized weather variations, while surrounding water bodies moderate temperatures but contribute to high humidity levels :cite[5].

Ocean Currents and SST

Surrounding sea temperatures remain consistently warm throughout the year (27-30°C), providing abundant moisture for convection and maintaining high humidity levels :cite[8].

MJO and ENSO Effects

The Madden-Julian Oscillation (MJO) can modulate convective activity on weekly timescales, while El Niño Southern Oscillation (ENSO) phases influence broader rainfall patterns across Southeast Asia with a potential change to a La-Nina on the cards.

Singapore Aero-Lite 2025 Weather Analysis

Current Season

Seasonal Information

Weather Averages

Climate Drivers

Global Warming Effects