High for a dull day Friday, with some rain later. Also for this clearing Saturday, before a period of wet weather early Sunday. However only moderate on details including timing. Moderate for cloudy and humid conditions thereafter.
Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.
Dry, bright morning. Becoming cloudy in afternoon with rain later. Strengthening winds.
|Chance of precipitation|
|600m||W 12 15||W 16 20||W 18 24||SW 22 28||SW 21 27||SW 21 28|
|300m||SW 7 14||W 11 21||W 12 24||SW 13 25||SW 12 25||SW 12 25|
|Valley||W 6 15||W 10 21||W 11 23||SW 11 24||SW 11 24||SW 11 24|
A bright or sunny start, although cloud will increase through the day. Most places remaining dry throughout, however some outbreaks of light rain or drizzle are likely to spread onto northwestern hills during the late afternoon and evening.
Greater than 90% at first, with sunny spells likely, and only patchy cloud around 600m. However this will thicken and descend during the afternoon, especially across northwestern hills. Falling to 30% in the west by dusk, with broken cloud at 600m with patches down to 500m during any rain, and 80% in the east.
Very good at first, but reducing to just middle distance hills being visible during the afternoon, and falling to just a few kilometres in any rain later.
Gusts around 40mph likely over summits from late afternoon. Temperatures reaching 22 Celsius in eastern valleys.
Rainfall data provided by Natural Resources Wales. The Met Office is not responsible for content provided by third parties and may remove this data without warning.
Rather cloudy overnight, but mostly dry, with only a few further outbreaks of rain or drizzle in the west. A mainly bright day then follows with some afternoon sunny spells likely, however cloud will increase again later in the day. Feeling humid.
Southwesterly 25mph, with gusts around 40mph over summits, gradually decreasing to 10-15mph from early afternoon.
Around 30% at dawn with broken cloud around 500m and patches around 400m in the west. Chances improve to 80% or more by mid-morning with cloud mainly around 800m However these fall again to 70% towards midnight as cloud increases and lowers to around 600m.
Some good views of distant hills possible from lower levels, but visibility of just a few kilometres in overnight rain and drizzle.