The north coast is relatively sheltered and a little drier than the mountains behind it. Many attractions run reduced hours from November to March.
Season by season
Spring (March–May)
The tramway reopens, gardens bloom and the laburnum arch at Bodnant flowers in late May.
Summer (June–August)
The resort season: Punch and Judy on the promenade, busy beaches and full tours.
Autumn (September–November)
Mussel season begins, and Conwy has traditionally held a food festival in the autumn.
Winter (December–February)
Quiet and windy, with low prices. The castle stays open with shorter hours.
Month by month
| Month | Avg high / low | Wet days | Daylight | Our verdict |
|---|---|---|---|---|
| January | 8° / 3°C | ≈16 | ≈8.5 h | Quiet & cheap |
| February | 8° / 3°C | ≈12 | ≈10 h | Quiet & cheap |
| March | 10° / 4°C | ≈13 | ≈11.8 h | Good |
| April | 12° / 6°C | ≈11 | ≈13.7 h | Good |
| May | 15° / 8°C | ≈11 | ≈15.3 h | Best |
| June | 17° / 11°C | ≈10 | ≈16.2 h | Best |
| July | 19° / 13°C | ≈11 | ≈15.7 h | Peak season |
| August | 19° / 13°C | ≈12 | ≈14.3 h | Peak season |
| September | 17° / 11°C | ≈12 | ≈12.5 h | Best |
| October | 14° / 9°C | ≈15 | ≈10.7 h | Good |
| November | 11° / 6°C | ≈16 | ≈9 h | Quiet & cheap |
| December | 9° / 4°C | ≈16 | ≈8.1 h | Quiet & cheap |
Approximate long-term averages, rounded; daylight is the approximate time between sunrise and sunset mid-month. Wales is mild but wet, and the mountains are colder, windier and wetter than the coast: pack layers in every season.
Festivals & events
- Late April / May Llandudno’s Victorian Extravaganza on the early May bank holiday weekend.
- Autumn Food and mussel events in Conwy; check the current year’s dates.
- December Christmas lights and markets.
Crowds & booking ahead
Conwy Castle is busiest around midday in summer, when coach tours arrive. Visit at opening time or late afternoon.
