UV index in Guarulhos
Current UV index, temperature and forecast for Guarulhos, Brazil — continuously updated from open weather data.
Moderate
Use sunscreen if you're outside for long.
27°C· Updated 10:12 AM
Forecast
UV in Guarulhos through the year
At 23°S, the midday sun in Guarulhos pushes the clear-sky UV index to around 12 (Extreme) at its December–January peak. Frequent cloud typically trims the real midday peak to about 9 (Very high). Even at midwinter the noon sun stays fairly high, so UV still reaches about 4 (Moderate).
The UV scale
- 0–2LowLow UV — enjoy the sun.
- 3–5ModerateUse sunscreen if you're outside for long.
- 6–7HighSPF 30+ recommended.
- 8–10Very highSPF 50+, seek shade 11–15.
- 11+ExtremeAvoid direct sun. Cover your skin.
What does the UV index mean?
The UV index is an international measure of the strength of the sun's ultraviolet radiation. The higher the value, the faster unprotected skin is damaged. From UV 3 upwards, sun protection is recommended. The level in Guarulhos varies with the season, the time of day and cloud cover — it peaks around midday in summer.
Frequently asked questions
What is the UV index in Guarulhos right now?
Right now the UV index in Guarulhos is 4 (Moderate). Use sunscreen if you're outside for long.
When is the sun strongest in Guarulhos?
UV is strongest around solar noon (roughly 11:00–15:00) in December–January, when the index in Guarulhos peaks near 9 (Very high). Use sun protection during those hours through the high season.
What sun protection do I need?
At UV 1–2, protection is normally not needed. At UV 3–5, sunscreen is recommended. At UV 6–7: SPF 30+, a hat and sunglasses. At UV 8 or higher: SPF 50+, seek shade between 11:00 and 15:00, and cover up.
How often is the UV forecast updated?
Values are fetched continuously from Open-Meteo's open weather data and cached for a few minutes, so the page always shows a current level.
