Caernarfon Castle Castle
Medieval Welsh fortress and UNESCO World Heritage site
Edward I's Caernarfon Castle dominates a Welsh town with polygonal towers and curtain walls. Visitors walk battlements, explore the regimental museum and learn about the castle's role in medieval governance and occasional state ceremonies.
Caernarfon Castle at a Glance#
Address: Caernarfon Castle, Castle Square, Caernarfon, Gwynedd LL55 2AY, United Kingdom
Website: https://cadw.gov.wales/
Hours: Seasonal opening hours (often daily in summer, reduced hours in winter) - check Cadw (Wales’ historic environment service) for exact times
Admission: Entrance to Caernarfon Castle: adult £15-£16 (approx.), concessions available - check Cadw for current pricing
About Caernarfon Castle#
Caernarfon Castle is a late 13th-century royal fortress in the town of Caernarfon in northwest Wales, built as a major stronghold during King Edward I’s conquest of Gwynedd. Construction began in 1283 and the site is recognised for its scale and distinctive polygonal towers.
The castle’s defensive defences include massive curtain walls and multiple large towers that enclose inner and outer wards. Visitors explore battlements, gatehouses and interior rooms; many come for the elevated views over the River Seiont and the Firth of Clyde estuary as well as the adjacent town. The site also contains exhibition space explaining the castle’s construction and role.
Edward I ordered the castle’s construction in the late 13th century as part of his program of fortifications in North Wales; the works were overseen by master masons associated with his campaign. Over subsequent centuries the castle’s military role declined and it has been preserved and interpreted as a historic monument.
The castle sits within the town of Caernarfon on the banks of the River Seiont, close to the Menai Strait and the island of Anglesey in Gwynedd, North Wales. It is immediately adjacent to Caernarfon’s medieval town walls and the town centre.
- Best views: Climbable battlements and towers provide panoramic views over the town of Caernarfon, the River Seiont and across to Anglesey; bring weatherproof clothing as conditions can change quickly.
- UNESCO status: Part of the UNESCO World Heritage listing ‘Castles and Town Walls of King Edward in Gwynedd’ and commonly visited with the adjacent town walls and museum displays.
How to Get to Caernarfon Castle#
Caernarfon Castle is in the town of Caernarfon, Gwynedd, North Wales. The nearest major rail station is Bangor (about 10-15 miles); from there buses or local taxis take visitors to Caernarfon (approx. 30-40 minutes). By road, follow the A487/A499 from Bangor or the A55 from Holyhead.
Tips for Visiting Caernarfon Castle#
- Buy tickets in advance for busy summer days to avoid queues.
- Climb the Eagle Tower for the best medieval views across the Menai Strait and the town.
- Look for the Royal Welch Fusiliers' connections - the castle was central to the 1969 investiture of the Prince of Wales.
Best Time to Visit Caernarfon Castle#
Late spring through early autumn offers the best combination of weather and visitor services.
Weather & Climate near Caernarfon Castle#
Caernarfon Castle's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in July) and cold winters (coldest in February). Temperatures range from 3°C to 19°C. Moderate rainfall (956 mm/year).
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | 3° - 8° | 1° | 92 mm | overcast | 87% | 6.5 m/s | 0.0 low | 7.9h |
| February | Poor | 3° - 8° | 1° | 68 mm | overcast | 87% | 6.2 m/s | 0.1 low | 9.6h |
| March | Acceptable | 4° - 10° | 3° | 81 mm | overcast | 86% | 5.9 m/s | 0.4 low | 11.7h |
| April | Acceptable | 5° - 12° | 6° | 58 mm | overcast | 84% | 5.0 m/s | 0.8 moderate | 13.8h |
| May | Good | 8° - 15° | 11° | 51 mm | overcast | 83% | 4.9 m/s | 1.2 high | 15.7h |
| June | Good | 10° - 18° | 14° | 58 mm | overcast | 84% | 4.6 m/s | 1.4 high | 16.7h |
| July | Good | 12° - 19° | 16° | 62 mm | overcast | 85% | 4.5 m/s | 1.3 high | 16.2h |
| August | Good | 12° - 19° | 16° | 77 mm | overcast | 85% | 4.5 m/s | 1.0 high | 14.6h |
| September | Good | 11° - 17° | 14° | 85 mm | overcast | 85% | 5.0 m/s | 0.6 moderate | 12.5h |
| October | Acceptable | 9° - 14° | 11° | 105 mm | overcast | 85% | 5.8 m/s | 0.3 low | 10.4h |
| November | Poor | 6° - 11° | 5° | 116 mm | overcast | 86% | 5.8 m/s | 0.1 low | 8.4h |
| December | Poor | 4° - 9° | 3° | 103 mm | overcast | 87% | 6.2 m/s | 0.0 low | 7.3h |
