Inter-monsoon

October weather in Singapore

Winds turn light and variable. Afternoon and evening thunderstorms pick up again as the ITCZ returns north.

September November

Mean temperature

27.9°C

25 to 31.8°C

Rainfall

168.3 mm

15 rain days

Humidity / wind

81.5%

1.6 m/s mean wind

Thunder / lightning

17 / 18

days in a typical month

Compared with the year

  • Rain vs annual monthly share8%
  • Hottest month of the yearMay (28.6°C)
  • Wettest month of the yearDecember (331.9 mm)
  • Driest month of the yearFebruary (105.1 mm)

Normals from Changi Climate Station, 1991-2020.

What to check this month

2-hour nowcast Lightning Heat stress
Afternoon thunderstorm cloud over a tropical city
Inter-monsoon storms grow in place on hot, still afternoons.

What October actually feels like

  • Winds turn light and variable. Afternoon and evening thunderstorms pick up.
  • ITCZ returning north means cells can pop with little warning. Nowcast plus radar.
  • Haze risk usually drops as rains return to the fire source regions.

Monthly rainfall at Changi

1991-2020 normals. December is more than three times as wet as February.

Values in millimetres. Source: Meteorological Service Singapore.

All months

January February March April May June July August September October November December