Caerphilly UV Index
Caerphilly — Sun Safety & UV Levels
Caerphilly UV Outlook
In Caerphilly today, UV intensity is expected to be low. Minimal UV risk today; sun protection is generally not required.
Over the period ahead, the UV pattern in Caerphilly stays on the moderate side overall. If you’re outdoors for a while, shade, a hat and sunglasses can help reduce exposure.
Current UV
Minimal UV risk today; sun protection generally not required.
☀️ UV Scale
| 0–2 | Low | Minimal UV risk today in Caerphilly; sun protection generally not required. |
| 3–5 | Moderate | UV levels are moderate — consider sunscreen if spending extended time outdoors. |
| 6–7 | High | UV levels are high — sunscreen, a hat, and sunglasses recommended. |
| 8–10 | Very High | UV levels are very high — take full precautions when outdoors. |
| 11+ | Extreme | Exceptionally high UV; minimise time in direct sun during peak hours. |
Today’s Hourly UV
14-Day UV Forecast
UV Trend
Forecast context and reference links
Forecast charts summarise likely conditions, but day-to-day outcomes in the UK often depend on how the larger pressure pattern evolves. Use the context links below to interpret the signal more reliably.
- Wales Climate for regional patterns and seasonal tendencies.
- UK Climate Overview for a national baseline and how regions compare.
- Wales for location browsing and regional navigation.
How to interpret confidence
For how forecast reliability changes with lead time, see Forecast Confidence. For transparency on how WeatherEngland sources and updates data, see Methodology.
Background guides
- UK Weather Patterns
- UK Seasonal Weather
- UK Weather Hazards
- UK Weather Safety
- UK Jet Stream
- UK Microclimates
Glossary support
Start with the Weather Glossary. Useful terms for this page include UV Index, Solar Radiation, and Cloud.
More Local Weather Forecasts
Browse current conditions and 14-day outlooks for nearby towns and cities on the local weather hub.
FAQ
What is the UV index in Caerphilly today?
Today in Caerphilly, UV levels are low and sits near 0 at its peak. Ultraviolet intensity is controlled mainly by the height of the sun, cloud cover and air clarity.
When is UV strongest in Caerphilly?
UV in Caerphilly is strongest around the middle of the day, when the sun reaches its highest point. Levels are also highest in late spring and summer, when the sun is higher in the sky across the UK.
Can UV be high when it’s cloudy in Caerphilly?
Yes — cloud is not a guarantee of low UV. Cloud doesn’t always block UV effectively — especially with patchy cloud and brighter summer light. This is most relevant in summer and around the middle of the day.
What does the UV index number mean for sun safety?
The number indicates how quickly unprotected skin may be affected in sunlight. A higher index indicates faster potential skin damage in sunshine; sensible protection becomes more worthwhile as values increase.
Does UV in Caerphilly change a lot day to day?
It can. Day-to-day swings are mainly driven by cloud patterns, haze and air mass changes, while seasonal shifts are slower and follow the sun’s height through the year.