# 73 Rainfall

At #73 in Guyana, for a period of record spanning 1979 – 2014
average annual rainfall sum = 1624.5 mm
wettest year on record = 2415.1 mm of rainfall in 2011
driest year on record = 1209.9 mm of rainfall in 1986
wettest month on average = 264.1 mm of rainfall in May
wettest month on record = 878.7 mm of rainfall in January 1990
peak of wet season = May to July on average with an average of 703.2 mm of rainfall
wettest 3-month period on record = 1988.9 mm of rainfall in Apr. to June 1990
driest month on average = 52.7 mm of rainfall in September
driest month on record = 0 mm of rainfall on multiple occasions
peak of dry season on average = Sept. to Nov. with 244.5 mm of rainfall
driest 3-month period on record = 37 mm of rainfall in Aug. to Oct. 1997
Below are links to charts of Monthly and Seasonal rainfall values. Click on each of the thumbnail images to see the respective full image.
#73 Guyana Monthly Rainfall
#73 Guyana Seasonal Rainfall