UV index in Tennanah Lake today
Tennanah Lake is a New York lake suburb at 41.9°S. Typical summer peaks of 8–10 (very high) feel milder in a lake breeze, but the index does not drop with the temperature. 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 Tennanah Lake
Peak UV, temperature and conditions for Tennanah Lake. 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 Tennanah Lake can still sit at protection levels. Why you burn on cloudy days.
When Tennanah Lake needs sun protection
Sun protection is needed in Tennanah Lake 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 Tennanah Lake need sun protection?
- Whenever the UV index is 3 or above. In Tennanah Lake 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 Tennanah Lake need sun protection in winter?
- Not every day. Midwinter middays in Tennanah Lake 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 Tennanah Lake?
- 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.