A number of heat records were broken in the Caribbean in 2020. Notably, in September, Dominica, Grenada and Puerto Rico broke their national/territorial all-time high temperature records. On September 15th, Canefield in Dominica recorded a daytime high temperature of 35.7°C. One day later, Point Salines in Grenada recorded 34°C. According to the US National Weather Service, Aguirre in Puerto Rico recorded 100°F (37.8°C) on September 17th . The Caribbean Heat Season, the time of the year during which most heatwaves occur, has since 1995 been from May to October since about 1995. The peak period occurs during the months of August and September when high humidity coupled with reduced wind speeds increases heat discomfort.
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Hurricane Dorian, the strongest hurricane on record to hit the Bahamas, wreaked massive devastation and loss of life. It intensified rapidly into a top-level Category 5 on 1 September and then remained stationary over the Caribbean nation, with destructive winds, storm surge and rain.