Croesyceilog UV Index
Carmarthenshire — Sun Safety & UV Levels
Croesyceilog UV Outlook
Today’s UV forecast for Croesyceilog stays moderate. UV levels are moderate. consider sunscreen if spending extended time outdoors.
Further ahead, the outlook in Croesyceilog remains generally moderate for most days. If you have sensitive skin, keep an eye on the UV index when spending longer outside.
Current UV
UV levels are moderate — consider sunscreen if spending extended time outdoors.
☀️ UV Scale
| 0–2 | Low | Minimal UV risk today; sun protection generally not required. |
| 3–5 | Moderate | UV levels are moderate — consider sunscreen if spending extended time outdoors. This is the guidance for Croesyceilog today. |
| 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
To plan confidently, separate what is likely from what is uncertain. Use the supporting guides to understand why the outlook is behaving the way it is for Croesyceilog.
- 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.
FAQ
What is the UV index in Croesyceilog today?
The UV index in Croesyceilog today is moderate with values around 5. UV strength is shaped by the sun’s elevation, cloud thickness and atmospheric clarity.
When is UV strongest in Croesyceilog?
The peak UV window in Croesyceilog is close to midday, as solar elevation peaks. Values rise most in late spring and summer as solar angles increase.
Can UV be high when it’s cloudy in Croesyceilog?
Yes. Even when it looks cloudy, UV can still reach the surface, particularly through thinner cloud layers. Bright or hazy conditions can still produce notable UV, particularly in late spring and summer.
What does the UV index number mean for sun safety?
The UV index describes the potential for skin damage from ultraviolet radiation. As the number rises, skin damage can occur more quickly in direct sun, so shade, clothing and sunscreen become more important.
Does UV in Croesyceilog change a lot day to day?
Sometimes, yes. Short-term changes usually come from cloud cover and atmospheric haze, whereas the larger seasonal cycle tracks solar elevation across the year.