Are There Black Widows in Florida?
Black widows are well-established throughout Florida, particularly in central and southern regions where warm weather supports thriving outdoor populations. Florida's climate is ideal for black widow survival year-round. Most bites result from accidental contact in garages, sheds, or storage areas. While the venom is medically significant, bites remain uncommon and treatable with medical care.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
Northern Black Widow · Joseph McPhail CC BY
Western Black Widow · Rebecca Ray CC BY
Western Black Widow · Michael Eisen CC BY
- 4
- species recorded
- 1,956
- GBIF records
- July, June, August
- peak months
Yes, black widows are in Florida. Next you'll want:
Verified species, source iNaturalist
4 types of black widows recorded in Florida
4 black widow species have a verified observation record in Florida, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
1 of the 4 shown is recorded as introduced to Florida rather than native, and 1 is endemic to Florida, found here and effectively nowhere else.
- No openly licensed photo yet1
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Counts from verified iNaturalist observations.
Real sighting data, source iNaturalist
3,046 verified observations on iNaturalist of black widow have been recorded in Florida, most often in July, June, August.
When black widow are recorded in Florida
Black widows are well-established throughout Florida, particularly in central and southern regions where warm weather supports thriving outdoor populations. Florida's climate is ideal for black widow survival year-round. Most bites result from accidental contact in garages, sheds, or storage areas. While the venom is medically significant, bites remain uncommon and treatable with medical care.
Are they in Florida?
Yes, black widows are established and common throughout much of Florida. The state's warm climate is ideal for black widow populations. They are found in all regions but are most abundant in central and southern Florida, particularly in areas such as Miami-Dade County, Broward County, and the Florida Keys. Black widows thrive in Florida's outdoor environment and do not need to retreat indoors during winter as they do in northern states. They hide in dark, sheltered locations such as under eaves, in tool sheds, around piles of wood or brush, and in dense vegetation. They are also commonly found in garages, basements, and storage areas. Black widows are less common in the northernmost parts of Florida near the Georgia border, but populations exist throughout the state. Encountering one is possible but not highly probable if you are aware of prevention strategies. ExploreFlorida wildlifeinformation to learn about all species you might encounter.
How dangerous is it?
A black widow bite is medically significant and should be treated seriously, but it is rarely life-threatening in healthy adults who receive prompt medical attention. The venom acts on the nervous system and causes intense muscle pain, cramping, and discomfort that can last several hours to several days. Symptoms typically develop within 15 to 60 minutes of a bite. Not all bites deliver the same amount of venom; some result in minimal symptoms while others cause considerable pain. Children, elderly individuals, pregnant women, and people with heart or respiratory conditions face increased risk of severe reactions. Medical professionals can effectively manage symptoms and prevent complications. Anti-venom or other supportive medical treatments are available. The outcome for most people bitten by black widows in Florida is full recovery within a few days. Deaths are extremely rare in areas with access to modern medical care. For more on black widow in Florida, see ourFlorida black widow guide.
How to recognize one
Black widows are distinctive and easily identified once you know what to look for. Adult females are glossy black with round, swollen abdomens and measure approximately one half inch in body length. The defining characteristic is a bright red, orange, or yellow hourglass mark on the underside of the abdomen. Males are smaller and may be lighter colored, sometimes with red or yellow stripes on the abdomen sides. In Florida, black widows hide in warm, dark, protected spaces such as under roof eaves, in firewood stacks, around dense shrubs and brush, and in storage areas. They build irregular, sticky webs that serve as both shelters and traps for prey. These spiders are non-aggressive and will only bite if accidentally crushed or directly pressed against skin. They do not chase or attack; they hide and avoid contact whenever possible. You can also browseFlorida wildlife.
What to do if you are bitten or stung
If you believe a black widow has bitten you, act quickly and stay calm. Gently wash the bitten area with soap and water. Remove any rings or bracelets from the affected limb immediately, as swelling may develop. Apply a cold compress to reduce pain and swelling, but do not place ice directly on skin. Elevate the bitten area if possible. Seek medical attention promptly. Do not delay seeking care based on how the bite looks or feels; symptoms may worsen over time. This is general information, not medical advice; if you are bitten, call Poison Control at 1-800-222-1222, or 911 if symptoms are severe. Medical professionals in Florida are experienced in treating black widow bites and can provide appropriate medication and support. Do not attempt home treatment such as cutting the bite, applying a tourniquet, or using unproven remedies.
How to prevent encounters
Preventing black widow encounters in Florida means reducing hiding places and being alert in likely areas. Clear brush, woodpiles, and dense vegetation away from your home. Organize garages, sheds, basements, and storage areas to minimize dark corners and undisturbed spaces. Inspect dark areas periodically, particularly under eaves and in corners of structures. Shake out shoes, gloves, and clothing before putting them on or using them, especially items stored in garages or sheds. Wear gloves when handling firewood or working in areas you cannot see clearly. Seal cracks and gaps in building foundations, window frames, and door frames. Reduce outdoor lighting at night or use yellow lights, as these attract insects that serve as prey. When gardening or working in dense vegetation, wear long sleeves and closed-toe shoes. Check your body for spiders after working outdoors in brush or tall grass. These simple practices significantly reduce risk.
Where in Florida and when
Black widows in Florida are found statewide, with the highest populations in central and southern regions such as the Miami metropolitan area, the Tampa Bay area, and south-central Florida. They thrive in Florida's warm climate and can be active year-round, though activity peaks during spring and summer months when temperatures are highest. Unlike northern populations that retreat indoors during winter, Florida's black widows remain active outdoors during mild winters. They are most commonly encountered in sheltered outdoor structures, dense vegetation, and under the eaves of buildings. You are most likely to find them in garages, storage sheds, woodpiles, and areas with brush. Northern Florida near the Georgia border experiences slightly cooler winters, but black widows still persist there. The warm climate means black widows can thrive in outdoor spaces throughout the year. Learn more aboutFlorida wildlifeto understand seasonal activity patterns.
Harmless lookalikes
Florida has many harmless spiders that are sometimes mistaken for black widows, providing reassurance for most encounters. Cellar spiders have extremely long, thin legs and tiny bodies and are completely harmless. Common house spiders create dusty webs in corners and are beneficial. Wolf spiders are often dark and can be large, but they are ground hunters and rarely bite unless handled roughly. Jumping spiders are small, curious, and entirely harmless. False black widows resemble genuine black widows but lack the distinctive hourglass marking and cause far less medical concern. Southern house spiders build funnel webs and are nonvenomous. Huntsman spiders can be large and intimidating but are harmless and eat unwanted pests. The key distinguishing feature of a genuine black widow is the hourglass mark on the underside of the abdomen. Most spiders encountered in Florida are helpful, eating mosquitoes and other insects that people find annoying.
Frequently Asked Questions
Are black widows deadly? Black widow bites are medically serious and require professional treatment, but deaths are very rare in healthy adults who receive prompt care. Modern medicine effectively manages symptoms, and most people recover completely within days. How common are black widow bites in Florida? Bites are still uncommon despite established populations because black widows avoid confrontation and bites occur only from accidental contact. Most encounters result in no bite. What attracts black widows to a house? Black widows seek warm shelter in garages, sheds, and storage areas. They are attracted to the insects they hunt, not to food, water, or any household items. What should I do if I see one? Leave it alone if possible. If removal is necessary, gently sweep it into a container and release it outdoors, or contact a pest control professional. Black widows prefer to hide and will not approach you. For more information, exploreFlorida wildlifeguides andour comprehensive wildlife resources.
Plan your trip
Best time to see black widow in Florida: July, June, August
See the month-by-month sighting calendar.
Plan your black widow sighting in Florida
1,956 verified black widow records have been logged in Florida, most recently in 2026. See the GBIF records.
Where to look in Florida
- Big Cypress National Preserve · Wildlife Watching, Birdwatching · Find hotels
- Biscayne National Park · Wildlife Watching, Birdwatching · Find hotels
- Canaveral National Seashore · Wildlife Watching, Birdwatching · Find hotels
- Dry Tortugas National Park · Wildlife Watching, Birdwatching · Find hotels
- Everglades National Park · Wildlife Watching, Birdwatching · Find hotels
- Gulf Islands National Seashore · Wildlife Watching, Birdwatching · Find hotels
Frequently asked questions
Are they in Florida?+
Yes, black widows are established and common throughout much of Florida. The state's warm climate is ideal for black widow populations. They are found in all regions but are most abundant in central and southern Florida, particularly in areas such as Miami-Dade County, Broward County, and the Florida Keys. Black widows thrive in Florida's outdoor environment and do not need to retreat indoors during winter as they do in northern states. They hide in dark, sheltered locations such as under eaves, in tool sheds, around piles of wood or brush, and in dense vegetation. They are also commonly found in garages, basements, and storage areas. Black widows are less common in the northernmost parts of Florida near the Georgia border, but populations exist throughout the state. Encountering one is possible but not highly probable if you are aware of prevention strategies. ExploreFlorida wildlifeinformation to learn about all species you might encounter.
How dangerous is it?+
A black widow bite is medically significant and should be treated seriously, but it is rarely life-threatening in healthy adults who receive prompt medical attention. The venom acts on the nervous system and causes intense muscle pain, cramping, and discomfort that can last several hours to several days. Symptoms typically develop within 15 to 60 minutes of a bite. Not all bites deliver the same amount of venom; some result in minimal symptoms while others cause considerable pain. Children, elderly individuals, pregnant women, and people with heart or respiratory conditions face increased risk of severe reactions. Medical professionals can effectively manage symptoms and prevent complications. Anti-venom or other supportive medical treatments are available. The outcome for most people bitten by black widows in Florida is full recovery within a few days. Deaths are extremely rare in areas with access to modern medical care. For more on black widow in Florida, see ourFlorida black widow guide.
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