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Weather to walk?
Mountains everywhere tend to generate their own climate, while remaining subject to whatever is going on nationally. Proximity to the Irish Sea can and does make a difference at times, making conditions change in an instance. So, while out on the hills, you need always to be aware of what is happening to the weather: is the wind changing direction? – are clouds gathering? – is it getting hotter, or colder? Make allowance for the fact that conditions on the tops are generally more severe than in the valleys.
You can get some indication of what might happen by checking the weather forecast both the day before you go and again on the morning you intend to walk. The internet is the best way of checking this, as the websites are regularly updated:
www.metoffice.gov.uk/loutdoor/mountainsafety/snowdonia/snowdonia_latest_pressure.html
IN CASE OF EMERGENCY
There are four key mountain rescue services operating in Snowdonia: