Llansteffan 14-Day Forecast
Carmarthenshire, Wales
Llansteffan Outlook (Next 14 Days)
For Llansteffan today, a good part of the day is driven by a mixture of dry spells and showery interludes. a comfortable feel sits underneath. A moderate breeze at times can add a little bite, especially when showers are passing through.
Detail is strongest early on; beyond that, a changeable pattern overall, with alternating spells and comfortable temperatures overall. Subtle changes in system tracks can alter the timing of rain or breezier periods, so it’s worth checking back for updates. For planning, use the visual trends first, then the daily breakdown for the most workable detail.
Daily Forecast
| Date | High | Low | Condition | Wind | Rain % | Humidity | Visibility | UV | Sunrise | Sunset |
|---|---|---|---|---|---|---|---|---|---|---|
| Thu, 4 Jun | 15°C | 11°C | Moderate rain | 42 km/h | 90% | 86% | 10 km | 6 | 05:02 AM | 09:29 PM |
| Fri, 5 Jun | 14°C | 9°C | Patchy rain nearby | 30 km/h | 73% | 76% | 9 km | 6 | 05:01 AM | 09:30 PM |
| Sat, 6 Jun | 14°C | 11°C | Moderate rain | 44 km/h | 93% | 87% | 9 km | 2 | 05:01 AM | 09:31 PM |
| Sun, 7 Jun | 14°C | 12°C | Moderate rain | 41 km/h | 97% | 92% | 8 km | 5 | 05:00 AM | 09:32 PM |
| Mon, 8 Jun | 14°C | 11°C | Moderate rain | 41 km/h | 92% | 84% | 9 km | 3 | 05:00 AM | 09:33 PM |
| Tue, 9 Jun | 14°C | 11°C | Patchy rain nearby | 34 km/h | 82% | 86% | 9 km | 3 | 04:59 AM | 09:33 PM |
| Wed, 10 Jun | 15°C | 13°C | Patchy rain nearby | 35 km/h | 73% | 90% | 10 km | 3 | 04:59 AM | 09:34 PM |
| Thu, 11 Jun | 16°C | 12°C | Partly Cloudy | 12 km/h | 7% | 80% | 10 km | 4 | 04:59 AM | 09:35 PM |
| Fri, 12 Jun | 20°C | 12°C | Sunny | 14 km/h | 5% | 80% | 10 km | 5 | 04:58 AM | 09:36 PM |
| Sat, 13 Jun | 22°C | 16°C | Partly Cloudy | 22 km/h | 5% | 80% | 10 km | 5 | 04:58 AM | 09:36 PM |
| Sun, 14 Jun | 19°C | 15°C | Patchy rain nearby | 19 km/h | 73% | 89% | 9 km | 4 | 04:58 AM | 09:37 PM |
| Mon, 15 Jun | 21°C | 14°C | Sunny | 12 km/h | 6% | 86% | 8 km | 5 | 04:58 AM | 09:37 PM |
| Tue, 16 Jun | 19°C | 15°C | Sunny | 16 km/h | 4% | 80% | 10 km | 5 | 04:58 AM | 09:38 PM |
| Wed, 17 Jun | 18°C | 13°C | Partly Cloudy | 25 km/h | 5% | 81% | 10 km | 5 | 04:58 AM | 09:38 PM |
Temperature Trend
Rain Probability
Wind Speed
UV Index
Forecast context and reference links
When forecasts change between updates, it is commonly driven by small shifts in storm track or blocking position. The links below give stable context that helps you read those changes.
- 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 Jet Stream, Air Mass, Zonal Flow, Atmospheric Blocking, Weather Front, and Pressure Trend.
FAQ
How is the weather likely to develop in Llansteffan over the next two weeks?
Across the next two weeks in Llansteffan, the bigger picture is shaped by a Moderate rain theme on many days. Temperatures hold fairly steady overall. Typical range: highs up to 22°C, lows down to 9°C. Rain-risk signal: 97% at peak (8 higher-risk days). Wind: a windiest-day signal around 44 km/h. UV: peaks around 6 on brighter days. Detail is usually strongest in the first few days. Later values are best read as the likely pattern rather than exact timing.
How should I interpret confidence in the Llansteffan 14-day forecast?
Confidence is typically highest in the first 3–5 days. Beyond a week, use it mainly to judge the likely regime (more settled versus more changeable) rather than exact timing — small shifts in storm tracks can move rain bands and wind peaks.
Is there an hourly breakdown for Llansteffan today?
Yes — you’ll see hourly detail for today and a day-by-day view for the rest of the 14 days. For planning, combine the two: timing from hourly, direction from daily.
What is the temperature trend in Llansteffan over the next two weeks?
Over the next 14 days in Llansteffan, Temperatures hold fairly steady overall. Use the Temperature Trend chart to see the direction more clearly than any single day’s number.
What does the ‘headline condition’ mean in the Llansteffan forecast?
It summarises the most representative weather type for the day. Local effects and timing shifts still matter — especially around fronts — so treat it as a headline, not a minute-by-minute guarantee.