How to Plan a Rainy Day in Somerset with Kids: Indoor Options and Backup Routes

Somerset is well supplied with roofs. Cathedral naves, aircraft hangars, cave systems, castle museums, soft-play barns and leisure-centre pools: when the forecast turns, you have more choice here than in most counties. The difficulty is not finding something to do. It is building a day that still works when the 9am forecast changes, the car park is full by 11, and a five-year-old has run out of patience by 2pm. This is the checklist for getting that right.

Pick one anchor, then leave everything else loose

Two to three hours is a realistic attention span for a family indoor visit, including coats, toilets and the argument about the gift shop. So choose a single destination that will absorb the worst of the weather, and treat the rest of the day as optional extras.

Book the anchor if it takes bookings. Anything with timed slots — caves, big museums, theatre shows — will be busier on a wet Saturday than on a dry one, because everyone else has had the same idea at the same time. A mid-morning slot is usually calmer than an early afternoon one.

One good indoor stop beats three rushed ones. The day does not need to be full; it needs to be dry and finishable.

Indoor options that genuinely work in the rain

Taunton and the Levels

The Museum of Somerset sits inside Taunton Castle, which makes it a good first stop for mixed-age groups: enough local history and natural history to fill a couple of hours, family trails to keep younger children moving, and a café for the inevitable mid-visit refuel. Check current entry charges and opening days before you go, as these change seasonally. Taunton also gives you a theatre, a leisure centre pool and soft-play centres within a short drive if the weather closes in further.

The Mendips and Wells

Wookey Hole and the Cheddar showcaves are the obvious picks, and the caves themselves are properly sheltered. The paths between buildings and the walk from the car park are not, so wellies still earn their place. In Wells, the cathedral is a superb wet-day building — vast, dry, with activities for children and a café on site — and the small museum nearby makes a decent hour-filler. Wells fills up fast on market days, so arrive early or aim for late afternoon.

North Somerset

The Helicopter Museum at Weston-super-Mare is almost entirely indoors and works well for children who need space to move. In Weston itself, the Grand Pier and the SeaQuarium will cover an afternoon if the beach is out of the question.

South Somerset

Two big-hangar options sit within easy reach of the A303: the Fleet Air Arm Museum at Yeovilton and the Haynes International Motor Museum at Sparkford. Both are large, warm, buggy-friendly and easy to spread out in, which matters when you have children of very different ages.

Timings: a wet-weather day that doesn't end in tears

1. The night before: check opening hours, last entry times and whether booking is required. Screenshot everything, because signal in rural Somerset is patchy.
2. Around 9am: check flood warnings and road closures before you commit to a route.
3. Arrive within the first hour of opening: you get parking, quieter galleries and a clear run at the café before the lunch rush.
4. Midday: eat, whether at the attraction or in a nearby town. Hungry children end days early.
5. Early afternoon: add one short second stop, ideally fifteen to twenty minutes away — a library, a café, or a playground if the rain has passed.
6. Around 3pm: head home. Wet-weather traffic is worse in the dark, and the last hour in the car is the one everyone remembers.

Treat the drive as a loop, not an out-and-back

Somerset's roads give you options if you plan them. The M5, A38 and A303 are the main trunks; the A39, A361 and A371 link the towns and offer slower but more predictable alternatives when the motorway crawls. Pick a route out and a different one back, so a closure or a flooded lane does not leave you stuck with a car full of tired passengers.

On the Levels, standing water and short-notice lane closures are common after heavy rain. Check Environment Agency flood warnings before you leave, and never drive through flood water — you cannot see the road surface or the depth, and turning around costs ten minutes. In towns such as Wells, Glastonbury and Frome, check car park height barriers if you have a roof box or a van, and keep change or a payment app handy for the smaller council car parks.

The kit that saves the day

• A full change of clothes and spare socks per child, plus one for you
• Wellies and trainers, so nobody is stuck in wet boots all afternoon
• Towels and a few plastic bags for soaked coats and muddy shoes
• Waterproof trousers — far more useful than an umbrella with small children
• Snacks and water bottles, so you are not buying a second lunch at 2pm
• A power bank and charging cable for phones used as tickets, maps and cameras
• Membership cards for the National Trust, English Heritage or similar, if you have them
• Screenshotted tickets and a note of the car park name and postcode

Keep a Plan C within fifteen minutes of home

Any wet day can collapse: a closed attraction, a cancelled session, a child who simply will not be indoors any longer. Have one cheap, local fallback in your pocket — a library with a children's section, a leisure centre pool, a soft-play session, a cinema matinee, or a museum you have been meaning to try. Knowing your Plan C in advance means you make that decision calmly rather than in a wet car park.

A five-minute check before you set off

Run through this on the driveway: is the attraction actually open today, and what is the last entry time? Do you need to book? Where exactly are you parking, and does it have a height or payment restriction? Are there any flood warnings on your route? Agree a decision time for going home before you leave, and stick to it.

Attractions change their hours with the seasons, and smaller houses and museums often close or run reduced days outside the main season, so a quick look at the venue's own website the day before is worth more than any list. Do that, pack the spare socks, and a wet Somerset day turns into a good one.

Photo: foc foodoncam / Pexels