Climate & Weather in Bonita Springs
Bonita Springs has a subtropical climate: warm winters that draw the seasonal population, and a hot, humid, rainy summer that overlaps almost entirely with Atlantic hurricane season. The two extremes -- pleasant dry season, wet hurricane season -- define most of what there is to know about living with the weather here.
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Learn moreTemperature
January, the coolest month, runs about 73°F for a daytime high and down to around 55°F overnight; August, the hottest month, runs about 91°F in the day with overnight lows only dropping to around 77°F, per Weather-and-Climate.com's monthly averages. The most comfortable stretch is winter into spring (roughly January through April, plus November-December); June through September is considered the least comfortable window because of combined heat and humidity.
Rainfall is heavily seasonal
Bonita Springs averages about 56 inches (1,434 mm) of rain a year, per Weather-and-Climate.com, concentrated overwhelmingly in the wet summer months. August, the wettest month, averages roughly 11 inches of rain across 26 rainy days, while November, the driest month, averages only about 1.3 inches across 6 rainy days -- a dramatic swing between the wet and dry seasons that affects everything from daily afternoon thunderstorm patterns to flood risk.
Hurricane season
Atlantic hurricane season runs June 1 through November 30, overlapping directly with the rainiest months. Hurricane Ian made a direct, catastrophic landfall on Lee County on September 28, 2022 as a high-end Category 4 storm, and Bonita Springs experienced significant flooding, particularly along the Imperial River where storm surge pushed water upriver into riverside neighborhoods, per contemporaneous reporting from WUSF and the City of Bonita Springs' own Hurricane Ian progress reports. That event remains the primary real-world reference point for storm risk in this market and continues to shape insurance pricing (see the Insurance & Hazard Costs page).
Flood risk is a live, ongoing factor -- not just a hurricane-day concern
Beyond named storms, ClimateCheck's climate-risk modeling flags roughly 99% of buildings in Bonita Springs as facing flood risk it categorizes as extreme -- a modeled risk score, not a claim that flooding is a certainty for every property, and worth treating as one risk-modeling firm's projection methodology rather than a verified outcome. It's directionally consistent, though, with the city's own emphasis on flood-zone mapping and FEMA Community Rating System participation discussed on the Insurance & Hazard Costs page.
Key takeaways
- Winters are mild (around 73°F/55°F high/low in January); summers are hot and humid (around 91°F/77°F in August), per Weather-and-Climate.com.
- Rainfall totals about 56 inches/year, overwhelmingly concentrated in the June-September wet season -- August averages roughly 11 inches over 26 rainy days versus November's roughly 1.3 inches over 6 days.
- Hurricane season (June 1-November 30) overlaps the wettest months; Hurricane Ian's September 2022 Category 4 landfall caused serious Imperial River flooding and remains the key local reference event.
- ClimateCheck's risk model flags a very high share of local buildings as facing 'extreme' flood risk -- a modeled projection worth taking seriously but understanding as a risk score, not a guarantee.
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