UV Index in Dundalk, Ireland

Last updated: July 2, 2025

Understanding the UV Index in Dundalk, Ireland is crucial for protecting your skin and overall health. Being aware of UV levels can help you prevent painful sunburns and reduce the risk of long-term skin damage, making it an essential part of daily outdoor activities. With Dundalk’s Cfb climate, which features mild temperatures and frequent cloud cover, many may underestimate their UV exposure. However, even on overcast days, UV rays can still be intense, peaking around midday with an index that can reach up to 8. Stay informed and safeguard your skin by keeping an eye on the UV Index!

Hourly UV Index in Dundalk

The UV Index throughout the day reveals a distinct pattern of increasing intensity as the sun rises. At 07:00, the index starts at a mild 1, gradually climbing to 2 by 08:00. As the day progresses, the intensity ramps up, peaking at an impressive 8 during the hours of 13:00 and 14:00—a clear indication that midday sun is at its most potent. After this height, the index begins to descend, dropping back to 6 at 16:00, and later settling at a more manageable 1 by 19:00. This hourly data clearly underscores the importance of sun protection during the midday hour for outdoor activities.

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:003moderate30 min
10:004moderate30 min
11:006high25 min
12:007high25 min
13:008very high15 min
14:008very high15 min
15:007high25 min
16:006high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Dundalk

Throughout the year, UV radiation levels fluctuate significantly, necessitating varying levels of sun protection. From January to February, the UV Index remains low (1-2), allowing for extended exposure times without burning, approximately 45 minutes. However, as spring approaches, the UV Index rises, reaching moderate levels (4-5) in March and April, where 30-minute burn times apply. The summer months of May through July present the highest risk, with UV Index values peaking at 8 and very high exposure categories, meaning that unprotected skin can burn in just 15 minutes. August sees a slight decrease, but still maintains a high UV Index of 7, with a burn time of 25 minutes. In contrast, September to October return to moderate levels, allowing for 30-minute safe exposure, while November and December drop back down to low levels (1-2) with burn times of 45 minutes. Visitors and residents are strongly advised to take precautions during the high-risk months of May through July, utilizing sunscreen, protective clothing, and seeking shade to minimize UV exposure and safeguard skin health.

Monthly Maximum UV Index for Dundalk, Ireland

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Dundalk. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Statistical UV Index data for Dundalk, 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 Dundalk UV Index with Other Ireland Cities

The table above highlights how UV exposure in Dundalk compares to other major locations across Ireland. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Dundalk's solar exposure compared to other cities in Ireland. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Dundalk124578875321
Gaillimh UVI124578875321
Tallaght UVI124578875321
Dublin UVI124578875321
Luimneach UVI124578875421
Cork UVI124578875421