UV Index
Portsmouth UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index6.6
- Avg Clouds35%
- Max Temp21 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Portsmouth, United Kingdom 
will reach a high of 6.6 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-02
Hourly Forecast Chart
Today's Safety Tips
Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.
Portsmouth's UV Index
The UV index in Portsmouth is usually low to moderate, ranging from 1 to 5 throughout the year, with higher values in summer months like June and July, often peaking around 5. Portsmouth's weather follows typical UK seasonal patterns: cool, wet winters and mild, sometimes rainy summers. Spring and autumn are transitional with moderate temperatures and variable rainfall. Winters can be chilly but not extreme, while summers remain relatively mild compared to hotter countries. Compared to other parts of the UK, Portsmouth is milder due to its coastal location, often experiencing less temperature variation. Neighboring countries like France and Belgium nearby generally have similar weather but can be slightly warmer or sunnier in summer.
Hourly UV Index Trend
See the UV index hour by hour for Portsmouth. When the level is high, it's smart to find some shade.
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