September 2025 Social Media Marketing Calendar for UK Small Businesses
- Hookle
- Aug 7
- 5 min read
Updated: Aug 8
Planning your social media in advance is one of the smartest ways to stay consistent and relevant - especially for small businesses in the UK.
This September calendar is packed with key awareness days, UK-specific events, and global hashtags to help you connect with your audience. From Roald Dahl Day to World Heart Day, use this guide to create engaging content that boosts visibility and saves you time.
Table of Contents
Bonus tip 💡: Schedule Your September Posts in Advance!
Sep 1st: National Tofu Day
Celebrate National Tofu Day on September 1st to showcase the versatility and health benefits of this plant-based protein. Tofu, also called bean curd, has been a staple in Asian cuisine for centuries and gained worldwide popularity.
Join the celebration and inspire others to incorporate this nutritious ingredient into their diets. Let's transform this humble soy-based food into a culinary masterpiece!
Hashtags: #NationalTofuDay #PlantBased #TofuLove #MeatFreeUK
Sep 5th: Charity Day
Promote charitable causes and encourage the International Day of Charity your followers to support a cause they care about. Share stories of organizations making a positive impact and ask your audience to share their own experiences.
Hashtags: #CharityDay #GiveBack #SupportGoodCauses #UKCharities
Sep 5th: National Cheese Pizza Day
Indulge in everyone's favorite cheesy delight. Share mouthwatering pizza recipes, ask your followers to vote for their favorite toppings, or host a pizza-themed giveaway. Use the hashtag #CheesePizzaDay to connect your pizza lovers!
Hashtags: #CheesePizzaDay #PizzaLovers #FoodieFun #PizzaTime
Sep 8th: International Literacy Day
Highlight the importance of literacy and education by sharing meaningful quotes, book recommendations, or interesting facts. Encourage your followers to engage in reading-related discussions.
Hashtags: #LiteracyDay #ReadMore #EducationForAll #BooksMatter
Sep 10th: World Suicide Prevention Day
World Suicide Prevention Day raises awareness of mental health and the importance of checking in on those around us. As a business, you can show your support by sharing helplines, encouraging open conversations, or simply reminding your audience that it’s okay to ask for help.
A thoughtful post today can make a big difference - compassion and connection matter more than ever.
Sep 13th: Roald Dahl Day
Celebrate one of Britain’s most beloved authors on Roald Dahl Day! Known for classics like Matilda and Charlie and the Chocolate Factory, this day is perfect for creative or family-focused businesses.
Share your favorite quote, ask followers to name their favorite Dahl story, or run a fun, themed promotion. Let your brand's playful side shine while tapping into a touch of nostalgia.
Hashtags: #RoaldDahlDay #RoaldDahl #UKBooks #LiteraryLegends
Sep 15th: International Day of Democracy
Promote democratic values by sharing inspiring quotes, historical events, or success stories. Encourage your followers to participate in discussions about democracy and the importance of civic engagement.
Hashtags: #DemocracyDay #StandForDemocracy #VoiceYourVote
Sep 16th: National Teaching Assistants’ Day
Let’s give a big shoutout to the unsung heroes of education - teaching assistants! Today is all about recognising their hard work and dedication in classrooms across the UK.
Whether you're in education, work with families, or just want to show support, take a moment to post a thank you message or story. Celebrate the people who make a real difference behind the scenes in our schools.
Sep 18th: Recycling Week
Recycling Week kicks off today in the UK - the perfect time to highlight your eco efforts. Whether your business recycles, reduces packaging, or supports sustainability, share it with your audience.
Small actions can lead to big change, and your followers may be inspired to do the same. Use this week to promote awareness, share tips, or even challenge your community to recycle more.
Hashtags: #RecyclingWeek #RecycleNow #SustainabilityUK #WasteLess
Sep 20th: World Cleanup Day
Encourage your followers to participate in cleaning up their local communities and share their experiences. Raise awareness about environmental sustainability and use relevant hashtags to inspire others to take action.
Hashtags: #WorldCleanupDay #CleanUpTheWorld #EcoAction #TrashTag
Sep 21st: International Day of Peace
Spread messages of peace, unity, and understanding. Encourage your audience to share their ideas for promoting peace in their daily lives.
Hashtags: #PeaceDay #InternationalDayOfPeace #SpreadPeace
Sep 21st: World Alzheimer's Day
Raise awareness about Alzheimer's disease and show support for individuals and families affected by it. Share educational resources, stories of hope, or fundraising initiatives.
Sep 21st: World Gratitude Day
Spread positivity by expressing gratitude. Encourage your audience to share what they are grateful for and how they practice gratitude in their lives.
Hashtags: #GratitudeDay #BeGrateful #PracticeGratitude
Sep 22nd: Autumn Equinox
Today marks the Autumn Equinox - when day and night are nearly equal in length and the new season officially begins. It’s a great opportunity to refresh your brand’s vibe, share seasonal tips, or post something cozy and relatable.
Whether you run a café, shop, or service, tie in autumn colours, new routines, or changes in your business. Celebrate the shift with warmth and creativity!
Hashtags: #AutumnEquinox #HelloAutumn #SeasonChange
Sep 23rd: International Day of Sign Languages
Promote inclusivity and raise awareness about sign languages. Share educational content, engaging sign language tutorials, and inspiring stories of individuals who use sign language in their daily lives.
Let's amplify our voice and support the deaf and hard-of-hearing community. Don't forget to use relevant hashtags to expand the reach of your message. Together, we can make a difference!
Sep 27th: World Tourism Day
Highlight popular travel destinations, share travel tips, or reminisce about memorable trips. Encourage your followers to share their travel experiences.
Hashtags: #WorldTourismDay #ExploreMore #TravelUK #TourismMatters
Sep 29th: World Heart Day
Raise awareness about heart health and promote healthy lifestyle choices. Share tips for maintaining a healthy heart, heart-healthy recipes, or personal stories of overcoming heart-related challenges.
Schedule Your September Posts in Advance!
Take your social media to the next level this September with our UK-focused content calendar. However, managing multiple social channels - from Instagram to your Google Business Profile - can feel overwhelming. But it doesn’t have to be. With the right tools, like Hookle, staying consistent becomes effortless.
Hookle is a social media management app built for small business owners like you
Hookle is a simple yet powerful app built for small business owners like you to plan, schedule, and publish posts across all your channels - including Google. You can even generate engaging content in seconds with built-in AI.
Don’t just take our word for it - try it yourself. Download Hookle for free today and start posting smarter.
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