Rio de Janeiro, Brazil UV Index in March
The average UV index in Rio de Janeiro, Brazil in March is about 12 (Extreme), peaking near 12 at midday on clear days. Fair skin (Type II) can burn in roughly 8 minutes without sunscreen. Avoid direct sun between 10am and 4pm. SPF 50+, full protective clothing, hat and sunglasses are essential.
What is the UV index in Rio de Janeiro, Brazil in March?
Average UV
12
Extreme
Midday Peak
12
Clear-sky estimate
Fair Skin Burn Time
8 min
Type II, no sunscreen
How long can you stay in the sun in Rio de Janeiro, Brazil in March?
| Skin type | Time to first burn | With SPF 30 |
|---|---|---|
| Type 1 | 5 min | up to 150 min |
| Type 2 | 8 min | up to 240 min |
| Type 3 | 13 min | up to 240 min |
| Type 4 | 20 min | up to 240 min |
| Type 5 | 30 min | up to 240 min |
| Type 6 | 45 min | up to 240 min |
Estimates based on Rio de Janeiro, Brazil's latitude and typical March 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.
Rio de Janeiro, Brazil UV Index by Month
When is the UV index highest and lowest in Rio de Janeiro, Brazil?
Highest: January (about 12). Lowest: June (about 10).
| Month | Average UV | Midday peak | Level | Fair skin burn |
|---|---|---|---|---|
| January | 12 | 12 | Extreme | 8 min |
| February | 12 | 12 | Extreme | 8 min |
| March | 12 | 12 | Extreme | 8 min |
| April | 11.3 | 12 | Extreme | 8 min |
| May | 10.5 | 12 | Very High | 9 min |
| June | 10 | 12 | Very High | 9 min |
| July | 10.2 | 12 | Very High | 9 min |
| August | 10.9 | 12 | Very High | 8 min |
| September | 11.7 | 12 | Extreme | 8 min |
| October | 12 | 12 | Extreme | 8 min |
| November | 12 | 12 | Extreme | 8 min |
| December | 12 | 12 | Extreme | 8 min |
Common questions about UV in Rio de Janeiro, Brazil in March
Do you need sunscreen in Rio de Janeiro, Brazil in March?
Yes. A UV index of 12 is Extreme, so use SPF 30+ on exposed skin between 10am and 4pm and reapply every two hours.
Can you tan in Rio de Janeiro, Brazil in March?
Yes, UV of 12 is strong enough to tan. Fair skin can burn in about 8 minutes, so build exposure slowly and use sunscreen.
What time of day is UV strongest in Rio de Janeiro, Brazil?
UV peaks around solar noon, roughly 11am to 2pm local time, when it can reach about 12 in March. Mornings and late afternoons are safest.
Is March a good month to visit Rio de Janeiro, Brazil for the sun?
March averages UV 12, compared with a yearly high of 12 in January and a low of 10 in June. Darker skin (Type VI) can burn in about 45 minutes at this level.