UV Index Today in Gainesville, Florida

Current UV
Today's Max

Hourly UV Forecast

low moderate high very high extreme

Surface Type

Reflective surfaces increase your UV exposure — snow reflects up to 90%, sand about 20%.

Safe Exposure Time

Estimated burn times based on the Fitzpatrick scale for skin color and today's maximum UV index of . Tap your skin type:

Very fair skin, always burns, never tans

Time until burn
With SPF 15*
With SPF 30*

*Assumes proper application of broad-spectrum sunscreen with reapplication every 2 hours. Estimates follow WHO guidance and satellite-derived data — see how our data works.

Sun Times

Dawn
Sunrise
Solar Noon
Sunset
Dusk
Day Length
Morning Golden Hour Ends
Evening Golden Hour

Important Safety Information

General Guidelines

These exposure times are estimates based on scientific research and should be used as general guidelines only. Individual responses to UV exposure may vary.

Affecting Factors

UV exposure is affected by: time of day, season, altitude, cloud cover, reflection from surfaces, and individual skin sensitivity.

Protection Tips

Seek shade during peak UV hours (10 AM - 4 PM), wear protective clothing, use broad-spectrum sunscreen, and monitor the UV index regularly.

Medical Advice

Consult a healthcare provider for personalized sun protection advice, especially if you have a history of skin conditions or take medications that increase sun sensitivity.

Gainesville's UV Climate

Gainesville, home to the University of Florida, sits inland in north-central Florida where the moderating sea breezes of the coasts never arrive — summer days are hot, still, and intensely sunny. A campus population of 60,000 students moving between classes, tailgating at Ben Hill Griffin Stadium, and floating the nearby springs adds up to heavy sun exposure for a demographic that famously skips sunscreen. The city's springs and prairies keep outdoor recreation going through the long high-UV season.

Average Annual UV Index

7.8

Peak UV Season

March - October

Sunny Days per Year

224

Typical UV Index by Season in Gainesville

Season Typical Midday UV Protection Needed
Summer Very High to Extreme (9-11) SPF 30+, hat, sunglasses; shade from 10 AM – 4 PM
Spring & Fall High (6-9) SPF 30+ for extended time outdoors
Winter Moderate (3-5) Sunscreen for long midday exposure; more on snow

UV Index in Nearby Cities

Practical Tips for Outdoor Activities

Make the most of outdoor activities while staying safe in Alachua County:

UV and Weather in Alachua County

Learn about Alachua County's unique climate patterns, UV radiation levels, and how they affect your daily life. Enter your zip code for location-specific weather radar data and UV forecasts to help you make informed decisions about outdoor activities and sun protection.

Climate and UV Patterns

Gainesville's humid subtropical climate produces very high to extreme UV from March through October, with summer midday readings of 9-11. Its inland position makes summer heat more punishing than coastal Florida, driving people toward water — springs, pools, and lakes — where reflection and midday timing compound exposure. Winter brings occasional freezes but plenty of clear days with moderate midday UV.

UV Index and Health Impact

Understanding UV radiation levels is crucial for protecting your health. Typical clear-day UV index values in Gainesville through the year:

  • Summer: Very High to Extreme (9-11)
  • Spring/Fall: High (6-9)
  • Winter: Moderate (3-5)
  • Peak UV hours: 10 AM - 4 PM
  • Cloud cover can reduce UV by 20-40%, but does not eliminate it
  • Clear skies bring maximum UV exposure

Local Weather Patterns

Summer follows Florida's interior storm pattern: sunny, steamy mornings giving way to heavy afternoon thunderstorms fueled by converging sea breezes from both coasts. The storms arrive reliably late, leaving the peak UV window exposed. Fall football season is a burn hotspot — September and October games mean hours in open stadium seating under UV that's still running high. Winters are mostly dry and bright.

Frequently Asked Questions About UV in Gainesville

What is the UV index in Gainesville today?

The live UV index for Gainesville, FL is shown at the top of this page and updates throughout the day, along with today's maximum and an hourly forecast.

When is the sun strongest in Gainesville?

UV radiation is strongest between 10 AM and 4 PM. Gainesville's peak UV season runs March - October, when the midday index typically reaches Very High to Extreme (9-11).

How high does the UV index get in Gainesville?

Summer days in Gainesville typically reach Very High to Extreme (9-11). Spring and fall usually bring High (6-9), while winter values are typically Moderate (3-5).

Do I need sunscreen in Gainesville during winter?

Yes. Even Gainesville's coolest months see moderate midday UV on clear days, so sunscreen remains worthwhile year-round for extended time outdoors.

How sunny is Gainesville compared to other cities?

Gainesville averages about 224 sunny days per year with an average annual UV index around 7.8.