Miami, Florida, USA UV Index in August
The average UV index in Miami, Florida, USA in August is about 8.9 (Very High), peaking near 11.9 at midday on clear days. Fair skin (Type II) can burn in roughly 10 minutes without sunscreen. SPF 50+ sunscreen, protective clothing, hat and sunglasses. Minimise midday sun exposure.
What is the UV index in Miami, Florida, USA in August?
Average UV
8.9
Very High
Midday Peak
11.9
Clear-sky estimate
Fair Skin Burn Time
10 min
Type II, no sunscreen
How long can you stay in the sun in Miami, Florida, USA in August?
| Skin type | Time to first burn | With SPF 30 |
|---|---|---|
| Type 1 | 7 min | up to 210 min |
| Type 2 | 10 min | up to 240 min |
| Type 3 | 17 min | up to 240 min |
| Type 4 | 27 min | up to 240 min |
| Type 5 | 40 min | up to 240 min |
| Type 6 | 61 min | up to 240 min |
Estimates based on Miami, Florida, USA's latitude and typical August sun angle. Cloud cover, altitude and reflection from water or sand can raise or lower the real UV. Check the live forecast before long days outside.
When is the UV index highest and lowest in Miami, Florida, USA?
Highest: May (about 9). Lowest: December (about 7).
| Month | Average UV | Midday peak | Level | Fair skin burn |
|---|---|---|---|---|
| January | 7.2 | 9.6 | High | 13 min |
| February | 7.7 | 10.3 | High | 12 min |
| March | 8.3 | 11.1 | Very High | 11 min |
| April | 8.8 | 11.7 | Very High | 10 min |
| May | 9 | 12 | Very High | 10 min |
| June | 9 | 12 | Very High | 10 min |
| July | 9 | 12 | Very High | 10 min |
| August | 8.9 | 11.9 | Very High | 10 min |
| September | 8.6 | 11.5 | Very High | 10 min |
| October | 8 | 10.7 | Very High | 11 min |
| November | 7.3 | 9.7 | High | 12 min |
| December | 7 | 9.3 | High | 13 min |
Common questions about UV in Miami, Florida, USA in August
Do you need sunscreen in Miami, Florida, USA in August?
Yes. A UV index of 8.9 is Very High, so use SPF 30+ on exposed skin between 10am and 4pm and reapply every two hours.
Can you tan in Miami, Florida, USA in August?
Yes, UV of 8.9 is strong enough to tan. Fair skin can burn in about 10 minutes, so build exposure slowly and use sunscreen.
What time of day is UV strongest in Miami, Florida, USA?
UV peaks around solar noon, roughly 11am to 2pm local time, when it can reach about 11.9 in August. Mornings and late afternoons are safest.
Is August a good month to visit Miami, Florida, USA for the sun?
August averages UV 8.9, compared with a yearly high of 9 in May and a low of 7 in December. Darker skin (Type VI) can burn in about 61 minutes at this level.