Most of Northumberland's best days out are outdoors, which is a problem in a wet half term. Here are 16 indoor places across the county, with the prices, parking and toilets checked, and an honest word on which are worth the drive.
The best rainy day activities in Northumberland are Woodhorn Museum near Ashington (under 18s free), Bamburgh Castle (open through the winter apart from 9 to 13 November), Barter Books in Alnwick (free, 9am to 7pm daily) and the Roman Army Museum near Greenhead, which is nearly all indoors. To burn off energy, Willowburn in Alnwick has pools and a climbing wall, and The Coliseum in Morpeth has indoor bouldering from age 4.
Checked 29 September 2026. Dates and prices change, so the organiser's link is the one to trust.
Nearly everything that makes Northumberland great happens outdoors: the beaches, the castles with no roofs, Hadrian's Wall, a forest you could lose a county in. So when it rains (and this is the North East, it rains), the list of proper rainy day activities in Northumberland shrinks fast, and most of what the internet offers you is soft play. This is the other list. Sixteen indoor or rain-proof places from Berwick to Kielder, with prices, opening and parking checked on each venue's own website, and an honest word on which are worth an hour of windscreen wipers.
Two things catch visitors out. A lot of places shut for winter right around October half term: Alnwick Castle's season ends on 20 or 22 October (its own pages disagree), and Chillingham Castle and Heatherslaw Corn Mill both close on Sunday 1 November. And on a wet Saturday in the holidays, every cottage from Craster to Berwick has had the same idea as you.
My rule: pick the rain plan in the same bit of the county as your cottage. An hour on the A1 behind a caravan in horizontal rain eats the day you were trying to save.
Soft play does exist up here, for the record. Willowburn in Alnwick and Wentworth Leisure Centre in Hexham both list it. No judgement, I've done my time in the ball pit. But you didn't drive to Northumberland for a ball pit.
The big indoor day on the coast, and the one that doesn't give up in winter. The State Rooms, the King's Hall and the Armstrong and Aviation Museum fill a couple of hours, then you can stare at the sea from the dry.
Half term adds Gory Stories in the Keep Hall (24, 25, 30 and 31 October; the castle says they're properly gruesome) and drop-in Halloween clay modelling on 24, 25 and 31 October and 1 November, both included. The snag: no pushchairs in the State Rooms, so bring a carrier. It closes 9 to 13 November for the Christmas set-up, then reopens with A Christmas Carousel until 3 January.
Free, and a cracking story. In 1838 Grace and her father rowed out from the Longstone lighthouse to rescue survivors of a shipwreck, and the actual coble they rowed is in here, along with her letters, a model of the lighthouse and audio-visual displays about the rescue. It won't take all day, which is about right before a castle.
There are no toilets in the museum (the nearest public ones are a short walk away on Church Street) and dogs other than assistance dogs stay outside.
Seahouses on a wet day is mostly fish and chips and boats going nowhere. The Seahouses Hub runs a community cinema, though: Shaun the Sheep: The Beast of Mossy Bottom (U) is on at 3pm on Saturday 24 October, £8 adults, £4 children or £21 for a family. Otherwise it's three miles up the road to Bamburgh.
Alnwick is the best town in the county to be stuck in when it's wet, because four of the options below are in the same town. Alnwick Castle has plenty of indoor rooms but closes for the season before half term, so don't promise anyone Hogwarts that week.
One of Britain's biggest second-hand bookshops, inside Alnwick's old Victorian railway station. A model railway runs between the book columns in the central room, the open fires are lit in winter, and there's a children's room with toys, which buys you roughly ten minutes of browsing. It's also where the Keep Calm and Carry On poster was found in a box of auction books in 2000, so now you know who to blame for the mugs.
It's a shop, so it costs nothing to go in. The Station Buffet in the old waiting rooms (9am to 6pm) doesn't take bookings, and the shop warns of waits at busy times. A wet holiday day is a busy time.
Alnwick's local museum, a couple of minutes from the castle gates, and properly set up for children: there's a mouse hunt round the galleries and Museum Detectives activities, a lift to every floor and baby changing. Children are a pound (90p online), which makes it the cheapest indoor hour in town.
Theatre, cinema and gallery on Bondgate Without, with the Playhouse Kitchen cafe bar. For half term there's Gaby Gulliver's Travels, a 45 minute shadow puppet show for ages 5 and up, on Friday 23 October at 11am and Saturday 24 October at 11am and 1.30pm, then CAST's youth Matilda JR from 28 to 31 October. Alnwick Theatre Club's pantomime Sleeping Beauty runs 27 to 31 January 2027 (£18, children £10).
Pools, a climbing wall and soft play under one roof on Willowburn Avenue, run by Places Leisure. This is here for one reason: after a museum and a bookshop, a swim is the only thing that actually tires out a seven year old. Hexham's Wentworth Leisure Centre is the equivalent over in Tynedale, with pools, soft play and a cafe.
Amble is thin on indoor options. The Northumberland Haunted Museum mostly runs evening events for grown-ups, though its family spell jar workshop (Tuesday 6 October, 5pm, £15 per adult and child pair, age 6 and up) is aimed at kids. For a proper wet day, drive the ten or so miles to Alnwick.
Lord Armstrong's house near Rothbury, the first in the world lit by hydroelectricity, a fact that holds a six year old for about a minute. The house opens 11am to 4pm through October and is a genuine rainy day, but until 1 November the ticket is priced for the whole estate, and in a downpour you're paying for grounds you won't use.
From 2 November prices drop to £11 and £5.50, and the National Trust page doesn't say what's open, so ring first. Christmas at Cragside runs 28 November to 3 January (closed 24 to 26 December), house 11am to 4pm, £18 adults and £9 children before Gift Aid.
This is the rain question people type most, and the answer is shorter than it used to be. Berwick Barracks is closed until autumn 2027, English Heritage says. Its Main Guard Museum on Palace Street is open 12pm to 4pm every day except Wednesday and Thursday, free, and small.
The Maltings cinema now runs from inside the Barracks, so the building still earns its place on a wet day. For half term it's showing Shaun the Sheep: The Beast of Mossy Bottom (U, 1 hour 20 minutes) from 24 to 31 October, with a sensory friendly screening at 2pm on Friday 30 October. Thursday is the cheap day for adults.
A working water mill where you watch flour made from start to finish; the mill calls itself the only place in Northumberland with the sight, sound and smell of a traditional mill. It's cheap and it's under a roof. Two honest warnings, though. It's all stairs, with no wheelchair access. And if the River Till is running too high or too low, the waterwheel can't turn, which after a week of rain is not a hypothetical.
The Heatherslaw Light Railway also runs from Heatherslaw to Etal until 1 November, £12.50 adults and £6 children return.
A medieval prison with a glass lift. Press D and it takes you down to the dungeon, where the doors stay firmly shut and you get a 90 second audio clip instead, which for a six year old is plenty. Under 18s go free. From 10 October to 1 November there's the Hexham Skull Trail (count the skulls, finishers get a sweet) and a Make a Groaning Ghost craft, both included.
Across town, the Queen's Hall on Beaumont Street is a theatre and arts centre rather than a cinema. Its family dates: free lantern making workshops on 27 October and 7 November, Luca Silvestrini's The Magic Flute on 8 November (from £13), The Brain Bending Science Illusion Show on 15 November (from £14), and A Christmas Carol from 5 December to 2 January (from £13, ages 6 and up).
The better wet-weather half of the Vindolanda Trust's two sites, because it's nearly all indoors: interactive displays, artefacts and an award-winning HD film. The Trust reckons on an hour and a half. For half term there's Bare Bones, a closer look at the Trust's collection of animal bones, from 24 October to 1 November, and National Lottery Players weekend on 31 October and 1 November gets you in free with a lottery ticket.
Here's the honest bit: most of Vindolanda is an open fort on a hillside, and in proper rain the best part, the fort itself, is the soggy part. The museum is the rain-proof bit, with writing tablets, shoes and pottery, and from 9 October to 31 December it also holds Susie MacMurray's installation Again and Again and Again. A £2 Archaeology Detectives pack gives the kids clues to solve round the fort and museum. The two sites are 15 minutes apart by car.
The Sill at Once Brewed, the National Park's discovery centre, is free to go in, with an exhibition, a cafe and a shop. On 28 October it runs Wild Wednesday: Make a Bat Box for ages 5 to 11 (book ahead). Parking is £3 for up to two hours.
The best value rainy day in the county: the old Woodhorn colliery at Ashington, with Coal Town, the Pitmen Painters' gallery and a cafe in the old winding house. Under 18s go free and adults buy an Annual Pass, so the second wet day of the holiday costs nothing.
Half term brings a pumpkin trail (14 October to 1 November) and the Arborialis luminarium by Architects of Air, a walk-in inflatable of light and colour, from 24 to 29 October. It's free with a pass but booking is essential, and shoes come off at the door, so wear socks without holes. Festive Tales runs in December at £10 a child.
A free museum of bagpipes in the Chantry on Bridge Street, the same building as Morpeth's tourist information centre. It's a stop on a Morpeth day rather than a day in itself, and pairs nicely with the bouldering below.
Visit Northumberland calls it the county's first proper indoor climbing centre. There's a dedicated kids' room for 4 to 7 year olds (4 is the minimum age), and junior open sessions on Monday evenings after 6pm, Wednesdays from 4pm and weekend afternoons. It's a strict one adult to two children, so a parent of three needs backup.
Two more for the south east. Seaton Delaval Hall fills its basement and stables with ghostly legends and giant spiders for Tales from the Shadows, 24 October to 1 November, included with normal admission (£15 adults, £7.50 children). And Blyth's Market Pavilion runs free drop-in Halloween crafts, 10am to 4pm daily from 27 to 31 October.
Kielder in the rain is mostly trees and water, both of them wetter than you, and Kielder Castle is closed for renovation. The exception is the observatory on Black Fell. Sessions go ahead when it's cloudy, with tours, demonstrations and talks instead of telescopes, so a grey night isn't a wasted drive. Family events suit younger children; main and late sessions are for 12 and over, and nobody under 4. The Space Kids: Searching for Stars teatime session on 8 November is for ages 6 to 12.
Yes: Woodhorn (free kids, everything under cover, a luminarium in half term), Bamburgh Castle and the Roman Army Museum. Barter Books too, though you may not get a table in the Buffet.
Maybe: Vindolanda, fine in drizzle and miserable in a downpour. Cragside, if you're National Trust members; at £27 an adult before 1 November I wouldn't pay full whack for the house alone in a storm. Kielder only if you've booked the observatory, because it's a long way to find a closed castle.
No: Heatherslaw Corn Mill is lovely and cheap but small, and the wheel may not turn after heavy rain. Holy Island is a wet walk with a small castle at the end, and the causeway floods twice a day, so you must check the council's safe crossing times before you set off. Save it for a dry day.
Northumberland schools break up on Friday 23 October, with half term running from Saturday 24 October to Sunday 1 November. These are from our Almanac and are all under a roof:
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Pick somewhere in your own corner of the county: Bamburgh Castle and the free Grace Darling Museum on the coast, Barter Books and Bailiffgate Museum in Alnwick, Woodhorn Museum near Ashington, or the Roman Army Museum on Hadrian's Wall. If the kids still need wearing out, Willowburn in Alnwick has pools and a climbing wall.
Alnwick is the best town to be stuck in, with Barter Books, Bailiffgate Museum (children £1), the Playhouse and a pool all in one place. Hexham is next, with the Old Gaol (under 18s free) and family shows at the Queen's Hall.
Our ranking: Woodhorn Museum (under 18s free, adult pass £11), Bamburgh Castle (adult £19.95 until 8 November), Barter Books in Alnwick (free, 9am to 7pm daily), then the Roman Army Museum near Greenhead. On a tight budget, the Grace Darling Museum and Morpeth's Chantry Bagpipe Museum are free, and Hexham Old Gaol lets under 18s in free.
The Seahouses Hub community cinema shows Shaun the Sheep: The Beast of Mossy Bottom at 3pm on Saturday 24 October, £4 for children or £21 for a family. Otherwise drive three miles to Bamburgh for the castle and the free Grace Darling Museum.
Bamburgh Castle's State Rooms and Armstrong and Aviation Museum are indoors (adult £19.95 until 8 November), though pushchairs aren't allowed in the State Rooms. The RNLI Grace Darling Museum across the village is free but has no toilets inside.
Amble itself has little indoors beyond the Northumberland Haunted Museum's events, such as a family spell jar workshop on 6 October (£15 per adult and child pair, age 6 and up). Alnwick is about ten miles away, with Barter Books, Bailiffgate Museum and Willowburn's pool.
Berwick Barracks is closed until autumn 2027, but the Maltings cinema runs from inside it, with children's tickets at £6.50. The free Main Guard Museum on Palace Street opens 12pm to 4pm, closed Wednesdays and Thursdays.
Few indoor places take dogs, but Hexham Old Gaol welcomes family pets and Bailiffgate Museum allows dogs on a short lead on its permanent floors. Woodhorn welcomes well behaved dogs on site, though not in the main Cutter Building or cafe, and Bamburgh Castle takes dogs in the grounds but not the State Rooms.
Facts checked against 59 pages on Tuesday 29 September 2026. Opening times and prices change, so confirm with the venue.
