UV Index
UV Index
Today's UV index in St. Peter Port, Guernsey 
will be up to 7.5, 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: 2025-06-22
With St. Peter Port's UV index reaching 7.5, 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 St. Peter Port, Guernsey, is generally moderate, ranging from 2 in winter to around 6 or 7 during summer, indicating medium sun exposure.
Seasonally, Guernsey has mild winters with temperatures around 7-10°C and cool summers averaging 17-20°C. Rainfall is fairly evenly spread throughout the year, but autumn and winter are wetter.
Compared to the UK, Guernsey enjoys milder winters and slightly warmer summers due to its island location. It is typically sunnier and less rainy than mainland northern France and has less extreme weather than Ireland.
See the UV index hour by hour for St. Peter Port, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.