Southern Uplands
The Galloway hills eastward to the Lammermuir hills. The Cheviots (including higher hills within the adjacent Northumberland NP).
Monday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Southern Uplands
Monday 17th August 2026
Last updated
Sun 16th Aug 26 at
3:56PM
Summary for all mountain areas
Much of the Highlands largely dry well into the afternoon with light winds, but some local patchy light rain and varied cloud. Rain develops from the west later, setting in heavy into evening. England and Wales sees patchy rain, drizzle and low cloud, though mid & south Wales tends to improve.
Headline for Southern Uplands
Patchy rain, low cloud most persistent west, wetter later.
How windy? (On the summits)
Variable direction then southerly, 5-10mph or less until early afternoon, increasing a little to 10-15mph afternoon, turning southwesterly, by evening rising to 25mph, soonest in west, 30mph from dusk.
Effect of the wind on you?
Small much of daytime, feeling breezier later on exposed terrain.
How Wet?
A little rain in places, then later persistent rain becoming heavy
Patchy light rain and drizzle in the morning and early afternoon, mostly small amounts, but risk a brief burst of rain locally; drier toward the Lothians. Later afternoon, more extensive steadier rain moves into Galloway, extending east and setting in heavier into evening. Heavy rain continues into night.
Cloud on the hills?
Varied low cloud, most persistent in west; lowering later.
Fairly extensive cloud across the hills early morning, lowest in Galloway, here may persist over upper slopes all day, some lower patches in southwest and more widely lowering again later afternoon. Breaks form best in east.
Chance of cloud free summits?
30% west, to 70% east afternoon
Sunshine and air clarity?
Largely cloudy, some weak sun occasionally through high cloud in east. Visibility varying, at times very good, but poorer around rain locally.
How Cold? (at 750m)
9C rising to 12C if out of cloud.
Freezing Level
Above the summits.
Viewing Forecast For
Southern Uplands
Tuesday 18th August 2026
Last updated
Sun 16th Aug 26 at
3:56PM
How windy? (On the summits)
Westerly 20 to 30mph.
Effect of the wind on you?
Affecting comfortable walking on higher terrain, at times more strenuous in exposure. Marked wind chill.
How Wet?
A few showers
Overnight rain clears southeast by dawn, leaving occasional showery rain.
Cloud on the hills?
Tending to break higher
Covering hills above 600m in morning, some lower patches, but tending to lift to 800m with breaks to many tops.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Broken cloud and sun, best in east. Visibility very good, briefly reduced in showers.
How Cold? (at 750m)
9 or 10C, trending cooler later in day. Feeling like 2 to 4C in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Southern Uplands
Wednesday 19th August 2026
Last updated
Sun 16th Aug 26 at
3:56PM
How windy? (On the summits)
West or southwesterly 10 to 20mph, occasional stronger gusts in rain.
Effect of the wind on you?
Mostly small.
How Wet?
Heavy showers forming, risk lightning
Patchy rain and showers mostly western areas in the morning, developing into showers increasingly widely middle of day onward, heavy bursts in afternoon tending to drift eastwards. Risk of thunder.
Cloud on the hills?
Mostly in west and in showers
Patchy cloud above 600-700m in morning, mostly in western areas. During and after rain, cloud lowering over tops widely, ragged patches to lower slopes.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Sunshine mostly early in day in east, then cloud bubbling up and filling in. Visibility very good, reducing to poor in showers.
How Cold? (at 750m)
8 to 10C, coolest west, little change all day.
Freezing Level
Above the summits.
Planning Outlook
Rain spreads to most places on Monday night as a frontal system moves eastward. Low pressure to the north will gradually drift south to envelop most of Britain into midweek, bringing showery conditions widely, some more organised bands of rain at times. Some heavy and thundery downpours forming, mostly into the afternoons in the second half of this week, becoming focused further south with time. Fresh westerly winds turning northerly and temperature lowering later in the week, dropping close to freezing on high Scottish tops by Friday and frost may occur in Highland glens over a couple of nights. Drier weather is likely by the weekend as higher pressure builds.