| Beaumaris 3 Day forecast (BBC) | Wind | Visibility | Pressure |
| Friday: sunny, Max Temp: 21°C (70°F), Min Temp: 11°C (52°F) | S 3mph | good | 1021mb |
| Saturday: sunny, Max Temp: 21°C (70°F), Min Temp: 15°C (59°F) | SE 9mph | very good | 1017mb |
| Sunday: sunny intervals, Max Temp: 22°C (72°F), Min Temp: 15°C (59°F) | SE 15mph | very good | 1013mb |