UV Index
UV Index
Today's UV index in Merl, Luxembourg 
will be up to 7.9, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-21
With Merl's UV index reaching 7.9, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
In Merl, Luxembourg, the UV index is usually moderate, ranging from 3 to 6 during most of the year, with higher values around summer months when the sun is strongest. Seasonal patterns show cool winters with temperatures around freezing, and mild to warm summers with temperatures often between 20°C and 25°C. Rain is spread fairly evenly throughout the year, with occasional snow in winter. Compared to the wider region, Merl has a climate similar to much of Luxembourg and neighboring countries like Belgium and Germany, featuring a temperate oceanic climate with moderate rainfall and no extreme temperatures. It tends to be less sunny than southern European countries but more consistent in rainfall than some nearby areas.
See the UV index hour by hour for Merl, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.