Does Sylvan Lake Resort need sun protection in winter?

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

Does the water make UV worse in Sylvan Lake Resort?

It can. The lake surface reflect ultraviolet, so skin that is not covered (including under the chin and on the tops of feet) picks up extra dose on top of the direct sun. The live UV index on this page is the sky reading; reflection is on top of that.

UV index in Sylvan Lake Resort today

Sylvan Lake Resort sits on the water in South Dakota at 43.8°S. Lake glare works like a beach: UV from above and off the surface, with summer middays typically 8–10 (very high). This is cool-temperate America: summer UV still climbs into the very high band, and spring arrives before the weather feels hot.

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

Today and tomorrow in Sylvan Lake Resort

Peak UV, temperature and conditions for Sylvan Lake Resort. 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 lakeside day in Sylvan Lake Resort can still sit at protection levels. Why you burn on cloudy days.

When Sylvan Lake Resort needs sun protection

Sun protection is needed in Sylvan Lake Resort typically from May through September, and any clear spring or fall day UV reaches 3. Lake glare adds a second dose on top of the sky reading, the same way a beach does.

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 Sylvan Lake Resort need sun protection?: Whenever the UV index is 3 or above. In Sylvan Lake Resort that is typically from May through September, and any clear spring or fall day UV reaches 3. The EPA Sun Safety action steps apply at the same threshold used worldwide.
Does Sylvan Lake Resort need sun protection in winter?: Not every day. Midwinter middays in Sylvan Lake Resort often sit below UV 3, but clear late-winter and early-spring days cross the threshold before summer fully arrives. Check the live index.
Does the water make UV worse in Sylvan Lake Resort?: It can. The lake surface reflect ultraviolet, so skin that is not covered (including under the chin and on the tops of feet) picks up extra dose on top of the direct sun. The live UV index on this page is the sky reading; reflection is on top of that.