Does Chatsworth Reservoir need sun protection in winter?

Not every day. Midwinter middays in Chatsworth Reservoir often sit below UV 3, but clear late-winter and early-spring days cross the threshold before summer fully arrives. Check the live index.

Can you burn on a cool day in Chatsworth Reservoir?

Yes. UV is not heat. A cool, windy or lightly cloudy day in Chatsworth Reservoir can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.

UV index in Chatsworth Reservoir today

Chatsworth Reservoir in California sits inland at 34.2°S, where dry air and fewer clouds often mean harsher UV than the temperature suggests. Summer middays typically reach 9–11 (very high to extreme). This is warm-temperate America: a long protection season from spring through fall, with clear winter days that can still burn.

Live reading · data by Open-Meteo · reference monitoring by ARPANSA

Today and tomorrow in Chatsworth Reservoir

Peak UV, temperature and conditions for Chatsworth Reservoir. Tomorrow’s peak is the number to plan around if you’re heading out in the middle of the day.

Weather conditions right now

Cloud and rain cut heat more than they cut UV. A partly cloudy day in Chatsworth Reservoir can still sit at protection levels. Why you burn on cloudy days.

When Chatsworth Reservoir needs sun protection

Sun protection is needed in Chatsworth Reservoir typically from April through October, and any other day UV reaches 3. Inland heat or a cool change does not change the UV index; go by the number, not how the day feels.

The threshold, per SunSmart and ARPANSA: whenever UV reaches 3 or above, Slip on covering clothing, Slop on SPF 50+ sunscreen, Slap on a hat, Seek shade and Slide on sunglasses. Read the full sun safety guide.

The UV scale at a glance

0–2Low
3–5Moderate
6–7High
8–10Very high
11+Extreme

Frequently asked questions

When does Chatsworth Reservoir need sun protection?: Whenever the UV index is 3 or above. In Chatsworth Reservoir that is typically from April through October, and any other day UV reaches 3. The EPA Sun Safety action steps apply at the same threshold used worldwide.
Does Chatsworth Reservoir need sun protection in winter?: Not every day. Midwinter middays in Chatsworth Reservoir often sit below UV 3, but clear late-winter and early-spring days cross the threshold before summer fully arrives. Check the live index.
Can you burn on a cool day in Chatsworth Reservoir?: Yes. UV is not heat. A cool, windy or lightly cloudy day in Chatsworth Reservoir can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.