Bethesda (Gwynedd) weather

Headline:

Very changeable. Some wet weather. Brighter spells too.

This Evening and Tonight:

Early evening bright spells will give way to thickening cloud and rain from the northwest during the evening and overnight. Rain becoming heavy and persistent overnight with a breeze. Staying warm and humid. Minimum temperature 16 °C.

Friday:

A wet start with some heavy rain around, though brightening up from the northwest through the morning to leave a fine afternoon. Breezy, and feeling fresher than recently. Maximum temperature 21 °C.

Outlook for Saturday to Monday:

Saturday looks mainly dry with some sunshine and fairly gentle winds. Gradually turning wet and windy from the northwest on Sunday, ahead of brighter skies again on Monday.

Overall, a fairly unsettled period is likely to begin this period with many places seeing showers or longer spells of rain at times, interspersed by drier periods. Rain is likely be most frequent across northern and western areas, while the south and east are more likely to see longer drier interludes. There is also the potential for some strong and gusty winds at times, particularly in the northwest. Temperatures are likely to be near average. However, further into mid-September, more settled weather is looking increasingly likely, bringing drier conditions with lighter winds and perhaps some warmer conditions too.

Settled conditions are most likely initially before a transition to more unsettled and changeable conditions towards the latter parts of September, though confidence is low at this lead time. Driest conditions through this period are likely to be seen across the south east, with wetter and windier weather more likely to the north west. Temperatures are likely to be slightly above average initially before becoming near-average towards the latter parts of September.