I'm a bit further from Sennybridge than you. On cold clear nights, Maesteg usually has the breeze keeping up so it doesn't get as cold as sheltered spots such as you and Sennybridge. Tondu, further down the road, is more sheltered though, and on mornings where it's been cold but not frosty here, it's often crisp and frosty down there (Tondu is where my school is btw) Maesteg's coldest night last year was about -5... nothing too serious really WB