UV Index
UV Index
Today's UV index in Donegal, Ireland 
will be up to 5.5, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-01
With a UV index reaching up to 5.5 in Donegal, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Donegal, Ireland, typically has a UV index ranging from low to moderate throughout the year, rarely reaching high levels due to its northern latitude and frequent cloud cover. Seasonal patterns in Donegal show mild summers with temperatures averaging around 15-20°C and cool, wet winters averaging 3-8°C, with rainfall spread evenly throughout the year. Compared to the wider region of Ireland and neighboring countries like Scotland and Northern Ireland, Donegal experiences similar temperate maritime weather but can be windier and wetter due to its exposure to Atlantic weather systems.
See the UV index hour by hour for Donegal, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.