UV Index in Wiltz, Luxembourg

Last updated: June 2, 2025

In Wiltz, Luxembourg, being aware of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding UV levels can help residents and visitors take necessary precautions, especially during the peak hours when the UV Index can reach 9 around midday. With a Cfb climate characterized by mild summers, Wiltz can experience significant UV exposure, making it crucial to stay informed about these levels to safely enjoy outdoor activities. Remember, protecting your skin from harmful UV rays today can lead to better health tomorrow!

Hourly UV Index in Wiltz

Radiating through the early hours, the UV Index begins with a gentle 1 at 07:00, gradually climbing to 2 by 08:00. As the sun ascends, so does the intensity, peaking at 9 by 13:00, indicating the day's highest UV exposure. A slight dip occurs as the clock ticks past the afternoon, with values decreasing to 6 at 16:00 and further to 4 by 17:00. As the day transitions to evening, the index falls back to 3 at 18:00 and concludes at a modest 1 by 19:00. This hourly progression highlights the importance of sun safety, particularly during the midday hours when protection is essential!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
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	8	very high	15 min
13:00	9	very high	15 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	1	low	45 min

Monthly UV Index Trends in Wiltz

Throughout the year, the UV Index experiences significant fluctuations, with high-risk months identified primarily from April to August, where the index peaks at an alarming 9 in June. During these months, the exposure category escalates to very high, resulting in a burn time of just 15 minutes for unprotected skin. In contrast, January, November, and December have low UV levels, making sun protection less critical, with burn times extending to 45 minutes. As such, it’s essential for both visitors and residents to stay vigilant during the peak months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially between 10 AM and 4 PM, when UV rays are strongest.

Monthly Maximum UV Index for Wiltz, Luxembourg

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Wiltz. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Wiltz, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Wiltz UV Index with Other Luxembourg Cities

The table above highlights how UV exposure in Wiltz compares to other major locations across Luxembourg. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Wiltz's solar exposure compared to other cities in Luxembourg. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Wiltz	2	3	4	6	8	9	8	8	6	4	2	1
Luxembourg UVI	2	3	4	6	8	9	8	7	6	4	2	1
Bettembourg UVI	2	3	4	6	8	9	8	8	6	4	2	1
Schifflange UVI	2	3	4	6	8	9	8	8	6	4	2	1
Dudelange UVI	2	3	4	6	8	9	8	8	6	4	2	1
Esch-sur-Alzette UVI	2	3	4	6	8	9	8	8	6	4	2	1