Forecast issued 1645 Thursday, 15 May 2008 / Cyhoeddwyd 1645 Dydd Iau, 15 Mai 2008
| Forecast for daylight hours for Friday / Rhagolwg ar gyfer oriau'r dydd Dydd Gwener |
| Hazards / Peryglon Nil |
| General situation / Sefyllfa cyffredinol A weather front will be slow moving over Wales on Friday and |
| Weather / Tywydd The morning dry and bright with occasional sunny spells. However, cloud becoming more extensive as we go through the day, the risk of a shower during the afternoon and evening. |
| Visibility / Gwelededd Moderate or good |
| Cloud base / Gwaelod y cymylau Broken or overcast with bases around 900m, but it could be scattered or clear at first. Patches to 600m at first and in any showers. |
| Wind and temperature at 900m / Gwynt a thymheredd at 900m East or northeast at 15 to 20 miles per hour. 4 to 8 degrees Celsius |
| Freezing level / Lefel rhewi Above the summits |
| Forecast for daylight hours for Saturday / Rhagolwg ar gyfer oriau'r dydd Dydd Sadwrn |
| Weather/ Tywydd A mainly dry and bright day, the cloud breaking at times to allow some sunshine. However, there could be a scattering of light showers, these possibly wintry over the summits. |
| Visibility, cloud base / Gwelededd, Gwaelod y cymylau Good or very good, but poor at times in any showers. The cloud scattered or broken around 900m. |
| Wind, temperature, freezing level / Gwynt, thymheredd, lefel rhewi At 900m, winds east or northeast around 20 miles per hour. The temperature plus 3 to plus 6 degrees Celsius and the freezing level around 1200m. |
Outlook for Sunday / Rhagolygon ar gyfer Dydd Sul
Mainly dry and bright, but there could be a scattering of showers, possibly wintry over the summits. Cool north or northeast winds, fresh to strong over the summits.
Outlook for Monday / Rhagolygon ar gyfer Dydd LlunMainly dry and bright, but there could be a the odd shower, possibly wintry over the summits. Cool east or northeast winds, fresh over the summits.
Outlook for Tuesday / Rhagolygon ar gyfer Dydd MawrthMainly dry and settled. Bright with occasional sunny spells. Most light winds but rather cool.
Weather forecast for Wales / Rhagolygon y tywydd i Gymru
