Singapore lies just north of the Equator near Lat 1.5 deg N and Long 104 deg E.
Because of its geographical location and maritime exposure, its climate is characterised by uniform temperature and pressure, high humidity and abundant rainfall.
Singapore is one giant tropical sauna. It's hot and humid year-round, with the temperature almost never dropping below 20°C, even at night, and usually climbing to 30°C during the day. Humidity is high, hovering around the 75% mark all year.
The climate of Singapore can be divided into two main seasons, the Northeast Monsoon and the Southwest Monsoon season, separated by two relatively short inter-monsoon periods.
Northeast winds prevail, sometimes reaching 20 km/h. Cloudy conditions in December and January with frequent afternoon showers.
Spells of widespread moderate to heavy rain occur lasting from 1 to 3 days at a stretch. Relatively drier in February till early March. Also generally windy with wind speeds sometimes reaching 30 to 40 km/h in the months of January and February.
Pre South-West Monsoon - late March to May
Light and variable winds with afternoon and early evening showers often with thunder.
South-West Monsoon Season - June to September
Southeast/Southwest Winds. Isolated to scattered late morning and early afternoon showers. Early morning 'Sumatra' line squalls are common. Hazy periods.
Pre North-East Monsoon - October to November
Light and variable winds. Sea breezes in afternoon. Scattered showers with thunder in the late afternoon and early evening.