April's weather is the sunniest and least humid of the year for key west, florida. that combined with warm, dry days makes for plenty of spectacular island weather this month. this page gives detailed information on the typical april temperature, precipitation, sun, humidity, wind and storms for key west.. Key west is located near a large body of water (e.g., ocean, sea, or large lake). this section reports on the wide-area average surface temperature of that water. the average surface water temperature in key west is gradually increasing during april, rising by 2
