Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Balk, Netherlands, especially as summer days bring increased sun exposure. The UV Index provides essential information about the intensity of ultraviolet rays at various times of day, helping you make informed decisions to prevent sunburn and protect your skin health. With a Cfb climate, Balk experiences moderate seasonal variations, but during peak hours—like between 12:00 PM and 2:00 PM, when the UV Index can soar up to 8—the risk of harmful UV exposure is significant. Staying informed about UV levels empowers you to enjoy the sun safely, ensuring your outdoor activities remain both enjoyable and healthy.
As the sun rises, the UV Index begins its ascent, starting off low at 1 at 07:00 and remaining steady through 08:00. By 09:00, it nudges up to 2, signaling a gradual intensification. The index reaches a noticeable 4 at 10:00, but it isn't until noon that it peaks at a striking 7. Both 12:00 and 13:00 maintain this high level, emphasizing the need for sun protection. The highest reading of the day occurs at 14:00, hitting 8, indicating a significant risk for unprotected skin. As the afternoon wanes, the index begins to decline, tapering to 6 by 16:00, then 4 at 17:00, and finally resting at 2 by 19:00. This data underscores the importance of being mindful of sun exposure, particularly during the midday hours when UV radiation is at its strongest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV Index values exhibit a notable increase during the spring and summer months, peaking in June and July with an index of 8, categorizing these periods as very high risk for sun exposure. The high-risk months include May through August, where the burn time decreases significantly, dropping to just 15 minutes in June and July. Conversely, January and December see a much lower UV Index of 1, indicating a low risk, with extended burn times of 45 minutes. To ensure safety, residents and visitors are advised to take necessary precautions, particularly during the high-index months, by wearing sunscreen, protective clothing, and limiting sun exposure during peak hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balk | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Amsterdam UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Utrecht UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Rotterdam UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Eindhoven UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Tilburg UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |