Climate & Weather in Boca Raton
Boca Raton has a tropical climate with hot, humid summers and mild winters, classified as tropical monsoon (Köppen "Am") by at least one climate-data source. Sources describe the exact seasonal peak-rainfall month somewhat differently across nearby South Florida cities, a reminder that even close-together stations can show real variation depending on methodology.
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Learn moreTemperature: Hot, Humid Summers and Mild Winters
One 2026 climate-tracking source puts average daytime highs at about 90°F (32°C) in August, the warmest month, cooling to about 75°F (24°C) in January, the mildest month. Average nighttime lows follow the same pattern, from about 79°F (26°C) in August down to about 59°F (15°C) in January.
Rainfall Peaks in Early Fall
The same source puts annual precipitation at about 57 inches (1,436mm). September is the wettest month, averaging about 8.5 inches (217mm) across 24 rainy days, while November is the driest, at about 2.2 inches (57mm) across 12 rainy days. This is a somewhat different seasonal shape than climate summaries this site has researched for some nearby Palm Beach County cities (where January or August are cited as the driest or wettest months instead) -- a reasonable reminder that cited climate normals can vary by source and weather station even across a compact geographic area.
Tropical Monsoon Climate Classification
This source classifies Boca Raton under the Köppen "Am" (tropical monsoon) climate type -- distinct from a simple "tropical" label, reflecting a shorter, drier season set against a much wetter majority of the year.
Hurricane Season Overlaps the Wettest Stretch
Atlantic hurricane season (June 1-November 30) overlaps directly with the region's wettest months, including the September peak cited above. See flood-hurricane-risk for insurance and risk specifics tied to this period, including recent FEMA flood-map updates and the phased Citizens flood-insurance mandate.
Flooding Risk Beyond Named Storms
Beyond named storms, Boca Raton's coastal location and flat elevation make it susceptible to both storm-surge flooding during hurricanes and rainfall-driven inland flooding independent of any storm -- FEMA's National Risk Index puts Palm Beach County's annual expected inland-flood loss at over $178.9 million. This is a routine, ongoing risk factor tied to the area's climate profile, not solely a hurricane-season concern.
Key takeaways
- Average temperatures range from roughly 59-75°F in January to 79-90°F in August, per one 2026 climate-tracking source -- hot, humid summers and mild winters.
- Annual rainfall is estimated at about 57 inches, with September the wettest month (~8.5 in.) and November the driest (~2.2 in.) per this source -- a different seasonal shape than some nearby-city climate summaries, illustrating real source and station variation across South Florida.
- Boca Raton is classified under the Köppen "Am" (tropical monsoon) climate type by this source.
- Hurricane season (June 1-Nov 30) overlaps the wettest part of the year; see flood-hurricane-risk for the insurance and risk mechanics.
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