Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Grand Haven, Canada, as it plays a vital role in protecting skin health and preventing sunburn. With the region's Dfc climate, residents experience varied UV levels throughout the day, peaking around noon when values can reach as high as 7. Being aware of these UV exposure risks helps individuals take necessary precautions, ensuring fun and safe outdoor activities while safeguarding against long-term skin damage. Stay informed and enjoy the beauty of Grand Haven under the sun—just remember to check the UV Index!
As the sun rises, the UV Index begins to climb, starting at a gentle 1 at 07:00. By 09:00, it reaches a moderate 3, prompting some caution for those venturing outdoors. 10:00 marks a notable surge to 4, and the UV Index peaks at 7 during the height of the day at 13:00. After this zenith, it gradually dips, returning to 6 at 14:00 before easing down to 2 by 18:00. As the day winds down, the UV Index settles back to 1 by 19:00, providing a gentle close to the daylight hours. Ensure to protect your skin during the peak hours of 11:00 to 13:00 when the sun's rays are strongest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index shows a seasonal variation in sun exposure, with highest values occurring from May to August, where the index remains at a high level of 7. During these peak months, the burn time decreases significantly to just 25 minutes, indicating a greater risk of skin damage. The high-risk months for UV exposure are therefore May through August, and it is crucial for visitors and residents to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. In contrast, the winter months (January, February, November, and December) exhibit a low UV Index (1-2), presenting a far lesser risk for sunburn, with burn times extending to 45 minutes. Overall, staying informed about the UV Index can help ensure safer outdoor activities year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grand Haven | 1 | 2 | 3 | 5 | 7 | 7 | 7 | 7 | 5 | 3 | 1 | 1 |
| Edmonton UVI | 2 | 3 | 5 | 6 | 7 | 7 | 8 | 7 | 6 | 4 | 2 | 1 |
| Calgary UVI | 2 | 3 | 4 | 6 | 8 | 8 | 9 | 8 | 7 | 4 | 2 | 1 |
| Montreal UVI | 2 | 4 | 5 | 7 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| Ottawa UVI | 2 | 4 | 5 | 8 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| Toronto UVI | 2 | 4 | 5 | 8 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |