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UV Index in Portsmouth

UV index


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Today's UV index in Portsmouth, United Kingdom United Kingdom will be up to 4.7, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.


Today's tips

With a UV index reaching up to 4.7 in Portsmouth, 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.

Portsmouth's UV Index

The UV index in Portsmouth, UK, is generally low due to its location in the northern hemisphere. The highest UV index is experienced during the summer months, but it rarely goes above 6, which is considered moderate.

Weather Seasons

UV index

Portsmouth experiences four distinct seasons. Spring (March to May) is mild and often wet, while summers (June to August) are typically cool and damp, with temperatures rarely exceeding 25°C. Autumn (September to November) is usually crisp and cool, and winters (December to February) are often cold and damp, with occasional snowfall.

Portsmouth's Climate

Compared to its region and neighboring countries, Portsmouth is relatively mild due to its coastal location. It experiences less rainfall and cooler temperatures than northern parts of the UK, and warmer winters than many parts of continental Europe. However, it can be windier than inland areas and its neighboring countries, due to its coastal position.

Annual Sun Radiation

The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Portsmouth. 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 Portsmouth (United Kingdom) 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.