Mariner wrote:Being serious for a moment apart from dark what happens at night?
Does the temperature plunge in the valleys as the sun goes down or is there enough residual heat still around?
Or put it another way lightweight quilt or full on down bag?
Does depend on weather, if it's clear overnight then things will get colder than if there's cloud cover. There's a mass of warm air predicted to come up from south west Europe so probably things aren't going to get particularly cold. BBC weather for Newtown is showing lows of 13C as an example, even with things generally being a couple of degrees cooler in the country (lack of urban effect) it's still going to be pretty warm.