Southern Uplands
The Galloway hills eastward to the Lammermuir hills. The Cheviots (including higher hills within the adjacent Northumberland NP).
Friday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Thunderstorms
Bursts of rain, torrential downpours with hail, risk of thunder and lightning. Seek shelter where possible.
Hot
Heatwave conditions. Very high temperatures, rising to 20C+ on high tops, approaching 30C in some valleys. Beware of heat stroke and dehydration. Carry plenty of liquid.
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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Thunderstorms
Bursts of rain, torrential downpours with hail, risk of thunder and lightning. Seek shelter where possible.
Hot
Heatwave conditions. Very high temperatures, rising to 20C+ on high tops, approaching 30C in some valleys. Beware of heat stroke and dehydration. Carry plenty of liquid.
Viewing Forecast For
Southern Uplands
Friday 26th June 2026
Last updated
Thu 25th Jun 26 at
4:29PM
Summary for all mountain areas
Starting hot and humid again, a cooling trend afternoon. Thundery showers for many in the morning, tending to clear in Wales. Afternoon thunderstorms and torrential rain in north England and Scotland, risk of localised flash flooding near heaviest downpours. Driest south Wales and Northwest Highlands.
Headline for Southern Uplands
Hot and muggy with thunderstorms; risk local flash flooding
How windy? (On the summits)
Generally south-southwesterly 15-20mph, gusty around showers/thunderstorms; sustained speeds occasionally to 25mph and later strengthening to 30-35mph over tops into night.
Effect of the wind on you?
Fairly small at times but with buffeting gusts around showers and notably deteriorating later for strenuous walking.
How Wet?
Periods of rain/thunderstorms, prolonged torrential falls
Scattered bursts of heavy rain/thunderstorms from before dawn, some dry periods. Through afternoon, rising risk of showers clustering for prolonged torrential downpours with hail and lightning; rapidly rising rivers and streams with flash flood risk.
Cloud on the hills?
Varied banks, later more extensive
Varied banks of cloud here and there, mostly near showers where some ragged patches will graze lower slopes; banks more extensive on high western terrain, or lower on southern aspects. High terrain becomes shrouded more widely with lower patches in rain.
Chance of cloud free summits?
70% lowering to 30%
Sunshine and air clarity?
Patchy sun through high cloud, increasingly overcast and murky. Very good visibility away from cloud and rain, some haze to the south, may deteriorate widely with thunderstorms.
How Cold? (at 750m)
Starting exceptionally hot and humid at 20 to 23C, hottest east. A cooling trend towards 17 to 19C later, and cooling further overnight.
Freezing Level
Above the summits.
Viewing Forecast For
Southern Uplands
Saturday 27th June 2026
Last updated
Thu 25th Jun 26 at
4:29PM
How windy? (On the summits)
Southerly 20-30mph, strengthening with speak speeds to 40-55mph, strongest west, risk stronger gusts over high tops.
Effect of the wind on you?
Expect strenuous walking conditions, more challenging in places with buffeting gusts knocking you off balance, notably west.
How Wet?
Bursts of rain, risk thunder
Clusters of heavy showery rain tracking northeastward throughout the day. Drier windows possible, though a lingering drizzle high west terrain and a greater risk of sudden downpours, thunder and lightning.
Cloud on the hills?
Varied, extensive around rain
Fairly extensive cloud banks in the morning, to some lower slopes especially in west. Tending to lift and break, but more persistent near Solway. In rain, lowering, filling in again, low ragged patches.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Brief glimpses of sun, mainly north. Misty many slopes in morning. Visibility improving for a time if dry below cloud, but poor around rain.
How Cold? (at 750m)
13 to 15C, rising slightly, to 17 or 18C Cheviots. Still rather humid. Feeling cooler directly in wind.
Freezing Level
Above the summits.
Viewing Forecast For
Southern Uplands
Sunday 28th June 2026
Last updated
Thu 25th Jun 26 at
4:29PM
How windy? (On the summits)
Southwesterly 20-30mph, may gust up to 35mph over high tops at times.
Effect of the wind on you?
Walking often impeded on high exposed fells, a cool feeling; may be locally fairly small.
How Wet?
Morning rain, scattered patches afternoon
Several bands of rain drift west-to-east through morning, brief heavy falls and dry windows. For afternoon, likely just patchy rain, greatest chance Dumfries and Galloway.
Cloud on the hills?
Lifting above the summits afternoon
Likely shrouding high terrain through morning, bases near 600-700m in rain, or lower near the Solway. Through afternoon, bases rising, cloud increasingly broken, likely above the summits by mid-afternoon.
Chance of cloud free summits?
30% rising to 90%
Sunshine and air clarity?
A few glimpses of morning sun, breaking to a patchwork of cloud and sun afternoon. Visibility becomes excellent.
How Cold? (at 750m)
10 or 11C, may reach 12C far eastern areas. Feeling like 1 to 3C in strongest wind.
Freezing Level
Above the summits.
Planning Outlook
The transition away from the exceptionally hot and humid weather begins on Saturday as wind shifts southwesterly and strengthens. Rain and thunderstorms may continue on Saturday as well as perhaps early Sunday, but a front will push east across the country on Sunday, followed by fresher, sunnier weather; patchy rain will likely linger here and there, notably northwest Scotland. Westerly Atlantic patterns dominate next week: high pressure south and low pressure north will bring alternating settled and unsettled windows. Wind generally on the strong side, mild to sometimes warm temperatures, and periods of rain punctuated by bright sunshine. North and western areas most vulnerable to extensive cloud and prolonged rain.