Open daily 10am-5pm until 24 October, then 10am-4pm from 25 October to 1 November; closed from 2 November; check the calendar for reopening. Christmas dates vary.
Last admission is normally 30 minutes before closing. Check the date-specific calendar and any notices before travelling.
EH members enter free with their membership card. National Trust membership alone does not cover admission. Advance booking is optional for ordinary visits and can save up to 15%; events may differ.
Compacted paths and ramped access serve ground-floor exhibitions. The keep upper floors require steep, narrow stone and wooden stairs. Toilets are in the public car park, not inside the castle.
Parking: Council car parks outside the walls charge £1.10 per hour between 10am and 6pm; EH and NT membership do not cover parking. Blue Badge parking is free with a valid badge.
Dogs: Dogs on leads are welcome throughout the castle visitor site.
Image: Portchester Castle keep and inner bailey. Tim Sheerman-Chase, CC BY 2.0. Source: https://commons.wikimedia.org/wiki/File:Portchester_Castle_16.jpg