Southwest Monsoon

July weather in Singapore

Typical southwest-monsoon pattern: short afternoon storms, occasional early-morning squalls, haze risk if fires burn upwind.

June August

Mean temperature

28.2°C

25.4 to 31.4°C

Rainfall

146.6 mm

14 rain days

Humidity / wind

80.9%

2.4 m/s mean wind

Thunder / lightning

13 / 13

days in a typical month

Compared with the year

  • Rain vs annual monthly share7%
  • 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

240 km radar Haze situation Air quality
Dark squall line approaching a tropical coast
A Sumatra squall is a line, not a blob. It usually arrives from the west.

What July actually feels like

  • Typical southwest-monsoon mix: short afternoon storms, occasional predawn squalls.
  • If fires are burning upwind in Sumatra, haze can arrive on the same southwest flow.
  • Western towns feel squalls first. Eastern towns may stay dry for the same line.

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