Sunshine, long days and a calendar packed with feel-good events – summer in Hertfordshire is the place to be. Whether you’re a foodie on the hunt for Caribbean spice, a family planning your next adventure, or just someone who loves a classic open-air cinema night, there’s something waiting for you in Herts this summer.
From outdoor beaches in the middle of town to LEGO® workshops and iconic blue characters, here’s our handpicked guide to the hottest events lighting up the county.
What’s on in Watford
When: Throughout August
Where: Watford
Watford is bringing the summer heat with a jam-packed line-up of free events the whole family will love. Kick things off with the Big Screen, showing everything from live sports to blockbuster films from 4–10 August in the town centre and 11–17 August in Knutsford, perfect for chilled-out evenings under the stars. Just up the road, Watford Big Beach transforms The Parade into a pop-up seaside escape from 15–31 August, complete with real sand, deckchairs and all the holiday vibes (minus the travel). Throughout the month, Free Parks Festival takes over Watford’s green spaces on 5, 12 and 19 August, with live music, crafts, family entertainment and street food stalls popping up across town. Then on 30 August, don’t miss the colour, joy and unity of Herts Pride, as Watford comes alive with a parade, live performances, food vendors and community celebration. With something happening every weekend – and it’s all free! Watford’s summer scene is not one to miss.
Natural History Museum Tring - LEGO® Build the Change: Nature-Friendly Habitat Build
When: 12 – 28 August 2025
Where: Natural History Museum, Tring
Calling all little builders and nature lovers! This August, the Natural History Museum in Tring is hosting the brilliant LEGO® Build the Change: Nature-Friendly Habitat Build. It’s a free, drop-in workshop where kids aged 6+ can get creative using LEGO® bricks to design homes that help wildlife thrive. From building safe corridors for animals to creating cosy spaces for mums and babies, it’s a super fun way for children to learn about how we can all protect the environment. It’s all part of a global project by LEGO to inspire kids to make a difference, one brick at a time.
Taste of Caribbean Food and Drink Festival
When: 2nd August 2025
Where: Fairlands Valley Park, Stevenage
Get ready for bold flavours, vibrant music and unbeatable vibes as the Taste of Caribbean Food and Drink Festival takes over Fairlands Valley Park for one day only. Bringing a slice of island life to Hertfordshire, this immersive event is all about celebrating Caribbean culture. Think juicy jerk chicken sizzling on the grill, fluffy festival bread, spicy patties, and sweet, sticky plantain. Pair it all with ice-cold rum punch or a tropical mocktail and you’ve got the perfect recipe for a feel-good summer day. With live reggae, soca, and dancehall performances, plus craft stalls and kids' activities, it's a celebration the whole family can enjoy.
The Smurfs at Hertfordshire Zoo
When: 5th August 2025
Where: Hertfordshire Zoo
Get ready for a smurftastic day out! Hertfordshire Zoo is thrilled to welcome Clumsy the Smurf for a fun-filled, one-day-only event. Families are invited to join the lovable blue character at the Safari Stage, where Clumsy will be making appearances at regular intervals throughout the day, from 10:00 AM to 3:30 PM. This special event offers a fantastic opportunity for children and fans of all ages to meet Clumsy, take photos, and enjoy the zoo's diverse array of animals and attractions. It's a perfect addition to your summer plans, combining the magic of the Smurfs with the excitement of a zoo adventure. Don't miss out on this enchanting experience!
Chiltern Open Air Museum – The Longest Yarn 2
When: 2 – 31 August 2025
Where: Chiltern Open Air Museum
Step into history this August with The Longest Yarn 2, a stunning 60-metre knitted tapestry that tells the story of Britain during World War II. From rationing to VE Day celebrations, each panel shares a heartfelt tale of resilience and hope, all handcrafted by volunteers. Set across the beautiful museum grounds, it’s a moving tribute that’s perfect for history lovers and families alike. Don’t forget to book ahead on busy days to avoid missing out!
Open Air Cinema at Down Hall Hotel
When: 9 – 11 August 2025
Where: Down Hall Hotel & Spa
Experience cinema under the stars at Down Hall Hotel & Spa’s Open Air Cinema weekend, presented by Enchanted Cinema. Set against the backdrop of the hotel's stunning 110-acre garden, this event offers a unique opportunity to enjoy classic films in an alfresco setting. The schedule includes:
- Saturday 9 August: Wicked
- Sunday 10 August: Grease
- Monday 11 August: Moana
Each evening begins with live music at 8:00 PM, followed by the screening at approximately 8:45–9:00 PM, coinciding with sunset. Guests can enjoy alfresco cocktails and bubbles from the Horsebox, along with a decadent outdoor pizza menu curated by Down Hall’s Executive Chef, Robert Pearce.
Experiential Sculpture Workshops with Shanti Bell at Henry Moore Studios & Gardens
When: Thursday 14th August 2025
Where: Henry Moore Studios & Gardens, Perry Green
Get hands-on with sculpture at Henry Moore Studios & Gardens this August! Join artist Shanti Bell for a fun, creative workshop where you’ll make small sculptures from wood, fabric, and rope, then team up to create larger outdoor pieces inspired by the beautiful surroundings. Perfect for adults aged 16+, it’s a great chance to try something new and connect with nature. Booking is essential and free, but you’ll need an annual ticket to the gardens.
Classic Motor Show at Knebworth House
When: 24 – 25 August 2025
Where: Knebworth House, Stevenage
Car lovers, get ready for a day packed with automotive excitement! The Classic Motor Show at Knebworth House is back for 2025, showcasing a fantastic collection of vintage and classic cars from across the UK and beyond. Expect gleaming beauties from iconic brands, rare models, and plenty of family-friendly activities throughout the day. There’ll be live music, food stalls, and a buzzing atmosphere set against the stunning backdrop of Knebworth’s historic grounds. Whether you’re a passionate petrolhead or just fancy a fun day out, this event is a perfect summer treat. Tickets include access to the house and gardens, so you can make the most of your visit.
St Albans Cathedral Events
When: Throughout August
Where: St Albans Cathedral
This summer, St Albans Cathedral is the place to be for a unique blend of music, history, and culture beneath its stunning medieval arches. Don’t miss the magical Beatles by Candlelight concert on 7 August, where the timeless songs of the Fab Four are brought to life in an intimate, candlelit setting, perfect for fans of all ages. Following that, experience the evocative Music of U2 by Candlelight on 21 August, a soulful tribute to the iconic Irish band, offering a moving live music experience that resonates deeply within the cathedral’s majestic walls. Alongside these highlights, the Cathedral hosts a rich programme of summer events including classical concerts, family-friendly workshops, open-air theatre performances, and heritage tours that explore its fascinating history and architecture. Whether you’re looking for an inspiring cultural outing, a peaceful place for reflection, or a lively community event, St Albans Cathedral’s summer calendar offers something special for everyone.
Summer at The Grove
When: Throughout August 2025
Where: The Grove
Luxury, leisure and laid-back summer vibes, offering an unforgettable escape right here in Hertfordshire. Soak up the sun at Ralph’s Beach, the hotel’s private sandy haven complete with loungers, parasols and cocktail service, it’s the closest thing to a Mediterranean escape without leaving the county. Catch a movie under the stars with Everyman in the Garden, where a big screen, cosy seating and gourmet snacks turn open-air cinema into an ultra-stylish experience. Got little adventurers to entertain? The Sporting Camp runs daily with activities like archery, tennis, and arts and crafts, all led by qualified instructors. And when it comes to refuelling, The Grove has nailed family-friendly dining, with outdoor food pop-ups, BBQs, wood-fired pizzas and children’s menus designed to please even the pickiest eaters. Whether you’re visiting for the day or staying the night, The Grove turns summer into something truly special.
