Country Overview For Turks And Caicos Islands. The climate in Turks and Caicos Islands is typically tropical; marine; moderated by trade winds; sunny and relatively dry. The terrain: low, flat limestone; extensive marshes and mangrove swamps. For Cockburn Town in January the daily average maximum temperatures is 29°C with the average minimum 19°C, while in June the average maximum is 33°C with a minimum of 22°C. The wettest month for Cockburn Town is November with an average of 194.2mm of precipitation falling while the driest month is August with 69.1mm falling.