High for a much poorer climbing day on Friday and a better day on Saturday. Low for all details early next week.
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.
Heavy and persistent rain can lead to drenched clothing and footwear with waterproofs often becoming soaked through, especially if accompanied by strong winds. This can lead to significant loss of body heat and an increased likelihood of hypothermia. Terrain may turn increasingly boggy underfoot while streams can flood and become impassable. There may also be a risk of flooding in valleys or glens. If there is snow cover, a heightened avalanche hazard is possible and avalanche reports should be consulted where available.
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.
Cloudy with outbreaks of rain, some heavy at first then becoming more patchy and drizzly in the afternoon then dying out in the evening. Hill fog.
|Chance of precipitation|
|600m||SW 18 23||SW 15 19||W 14 19||NW 14 19||N 16 21||N 17 23|
|300m||SW 9 13||SW 9 13||W 9 14||NW 9 14||N 10 17||N 11 18|
|Valley||SW 6 12||SW 6 12||W 7 13||NW 8 14||N 9 16||N 10 17|
Persistent and occasionally heavy rain at first will then ease off through the morning but some lighter outbreaks will continue on and off into the afternoon, then becoming dry in the evening with perhaps some late sunshine.
Around 10% with widespread cloud 300-600m, increasing 20-30% later in the afternoon and 60% in the evening with cloud breaking and perhaps lifting to near summit level.
Moderate, occasionally poor in rain and drizzle, improving good at times in drier spells in the afternoon and evening away from cloud.
Note the change in wind direction through the day
A cloudy start but soon brightening up from the west with some sunny intervals. Some thicker cloud and light rain or drizzle will return from the west towards late evening.
40% at first with some 600m cloud then rising 90% with bases breaking and lifting, Falling 60% towards late evening as the cloud thickens from the west.
Moderate at first becoming very good during the morning.