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UV Index in Portland, US

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Today's UV index in Portland, United States United States will be up to 0.9, indicating low risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.


Today's tips

Today, the UV index suggests low sun danger (0-2) in Portland, reaching up to 0.9. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.

Portland Weather

Read more here about the climate and sun exposure in and around Portland.

UV Index in Portland

The UV index in Portland ranges from low to moderate, typically reaching a maximum of 5 to 6 during the summer months. This means there is a moderate risk of harm from unprotected sun exposure, so it is advisable to wear sunscreen, sunglasses, and protective clothing when outdoors for an extended period of time.

Weather Seasons

UV index

Portland experiences four distinct weather seasons. In spring (March to May), temperatures range from around 7 °C (45 °F) to 18 °C (65 °F), with occasional rainfall. Summer (June to August) brings pleasant temperatures averaging between 16 °C (61 °F) and 26 °C (79 °F), along with drier conditions. Fall (September to November) sees temperatures dropping to around 6 °C (43 °F) to 18 °C (65 °F) and increasing rain. Winter (December to February) is chilly, with temperatures ranging between 0 °C (32 °F) and 10 °C (50 °F), and occasional snowfall.

Portland's Climate

Compared to its region, Portland has cooler summers and milder winters due to its proximity to the Pacific Ocean. This maritime influence moderates temperature extremes. However, the region does see less sunshine compared to other areas. Portland receives approximately 144 sunny days per year, which is lower than the national average. Despite this, the city enjoys a mild climate overall, making it suitable for various outdoor activities throughout the year.

Annual Sun Radiation

The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Portland. It's designed to provide you with a better understanding of the yearly weather and sun exposure.


* This page's content about the UV index in Portland (United States) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.