Climate Summary For September

September is the wettest month of the South West Monsoon and marked the end the late South West Monsoon season. The Northern Inter Tropical Covergence Zone (NITCZ) lies around 17oNorth of the Equator.

Period between 17 to 30 years

  Average Highest Lowest
Rainfall (mm) 256.8 721.9 84.5
Rain Day 19 28 12
Mean Air Temperature (oC) 26.8 27.3 26.3
Mean Maximum Temperature (oC) 32.0 33.2 31.3
Mean Minimum Temperature (oC) 22.9 23.8 22.9
Mean Relative Humidity (%) 85 89 82
Sunshine (hour/day) 6.7 7.7 4.4


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Director of Civil Aviation
Ministry of Communications 2015
Brunei International Airport
Tel: (673)2-330142 Fax: (673)2-331706
Email: meteobru@pso.brunet.bn