- Monsoon Update
(Updated on 5 January 2017)
Singapore is currently in the Northeast Monsoon season with prevailing winds blowing predominantly from the northeast or northwest. With the expected presence of low pressure systems over the surrounding sea areas, the low level winds over Singapore and the surrounding region are likely to temporarily shift to blow from the southwest or west on a few days.
In January 2017, short-duration thundery showers are expected in the afternoon on most days, and could extend into the evening on a few days due to strong convective heating of land areas and/or sea breeze convergence. Thundery showers with gusty winds due to lines of thunderstorms or squalls from the Strait of Malacca or Sumatra can be expected on a few days between the predawn and morning over Singapore. In addition, one or two monsoon surges+ with periods of moderate to heavy rain can be expected and could extend for a few days in the second half of the month.
Based on long-term statistics* at our climate station, January is the third wettest month of the year, after December and November. The average rainfall for January is 234.6 mm, and the average number of days with 0.2mm or more of rainfall is 13 days. The mean daily minimum and maximum temperature for January is 23.9 0C and 30.4 0C respectively.
For the latest weather forecast, including heavy rain warnings, please visit our MSS website (www.weather.gov.sg), NEA website (www.nea.gov.sg), download the myENV app, Weather@SG app, weather information hotline at 65427788, through following NEA’s twitter via @NEAsg or from radio broadcasts.
+A monsoon surge is characteristic of the wet phase of the Northeast Monsoon season (Dec – Jan). It is due to the strengthening of northeasterly winds over the South China Sea and our surrounding region, and can bring widespread rain to coastal areas in the Southeast Asia region. Read more at http://www.weather.gov.sg/learn_weather_systems/
*based on 30-yr climatological reference period (1981- 2010)