UV Index
UV Index
Today's UV index in Londonderry, United Kingdom 
will be up to 6.1, 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: 2025-06-20
With Londonderry's UV index reaching 6.1, 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.
The UV index in Londonderry is generally low, usually ranging from 1 to 4 throughout the year. It rarely reaches high levels due to the northern latitude and frequent cloud cover.
Londonderry experiences cool summers and mild winters. Rain is fairly evenly spread across the year, making it often overcast and damp. Snowfall can happen but is usually light and not common.
Compared to the rest of the UK, Londonderry is cooler and wetter. It tends to be cloudier than southern England but less cold than some inland parts of Scotland. Neighboring Ireland has similar weather, with slightly milder temperatures near the coast.
See the UV index hour by hour for Londonderry, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.