UV index in Northeastern Manitoulin and the Islands today
Northeastern Manitoulin and the Islands in Ontario sits inland at 45.8°N, where dry air and fewer clouds often mean harsher UV than the temperature suggests. Summer middays typically reach 8–10 (very high). This is cool-temperate Canada: 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 Northeastern Manitoulin and the Islands
Peak UV, temperature and conditions for Northeastern Manitoulin and the Islands. 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 Northeastern Manitoulin and the Islands can still sit at protection levels. Why you burn on cloudy days.
When Northeastern Manitoulin and the Islands needs sun protection
Sun protection is needed in Northeastern Manitoulin and the Islands typically from May through September, and any clear spring or fall 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 Northeastern Manitoulin and the Islands need sun protection?
- Whenever the UV index is 3 or above. In Northeastern Manitoulin and the Islands that is typically from May through September, and any clear spring or fall day UV reaches 3. Health authorities use the same UV Index threshold worldwide.
- Does Northeastern Manitoulin and the Islands need sun protection in winter?
- Not every day. Midwinter middays in Northeastern Manitoulin and the Islands 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 Northeastern Manitoulin and the Islands?
- Yes. UV is not heat. A cool, windy or lightly cloudy day in Northeastern Manitoulin and the Islands 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.