August Marketing Calendar: 100+ Content Ideas & Subject Lines

While August is still mostly about holidays, sun, beach, and outdoor activities, vacations shouldn’t be the only topic of your marketing campaigns. August is the last month of summer, meaning parents and kids are preparing for back-to-school, late travelers are looking for last-minute trips, and businesses are getting ready for the fall season.

Your task is to fulfill the current needs of your audience, ensuring engagement and generating interest. Check the below creative content ideas and come up with the offers that would resonate with your business and deliver your customers what they need right now.

Day Holidays and Events to Look for in August 2025

Aug 1

World Scout Scarf Day;

Azerbaijani Language and Alphabet Day;

Swiss National Day;

Emancipation Day;

Parents' Day (Congo);

Yorkshire Day (England);

International Beer Day;

Aug 2

Food Day Canada (first Saturday of August);

National Mustard Day (US).

Day of Azerbaijani Cinema;

National Ice Cream Sandwich Day (US).

Aug 3

Friendship Day (first Sunday of August);

Independence Day (Niger);

Flag Day (Venezuela);

Arbor Day (Niger);

National Watermelon Day (US).

Aug 4

Canada Civic Holiday (first Monday of August);

Farmers' Day (Zambia);

Commerce Day (Iceland);

Youth Day (Kiribati).

Aug 5

Homeland Thanksgiving Day (Croatia);

Carnival Tuesday (the Caribbean);

National Underwear Day (US).

Aug 6

Independence Day (Bolivia);

Independence Day (Jamaica);

August Festival (El Salvador).

Aug 7

Emancipation Day (Saint Kitts and Nevis);

Republic Day (Ivory Coast);

Aug 8

Happiness Happens Day;

International Cat Day;

Ophthalmologist Day;

Father's Day (Mongolia, Taiwan);

Farmer's Day (Tanzania).

Aug 9

International Day of the World's Indigenous Peoples;

Book Lovers Day;

Tu b'Av (Israel);

National Day of Singapore;

National Women's Day (South Africa);

National Hug Day (Japan);

Children's Day (Uruguay, Chile).

Aug 10

International Biodiesel Day;

Gai Jatra (Nepal);

National Day (Ecuador);

Veterinary Workers Day (Ukraine);

National Technology Uprising Day (Indonesia).

Aug 11

Mountain Day (Japan);

Day of Armenian National Identity;

National Raspberry Tart Day (US).

Aug 12

World Elephant Day;

International Youth Day;

National Vinyl Record Day (US);

Glorious Twelfth (UK).

Aug 13

International Lefthanders Day;

Independence Day (Central African Republic);

Obon (Japan);

Women's Day (Tunisia);

National Prosecco Day (US).

Aug 14

World Lizard Day;

Engineer's Day (the Dominican Republic);

National Creamsicle Day (US).

Aug 15

Mother's Day (Costa Rica);

Independence Day (India);

National Day (Liechtenstein);

Aug 16

International Homeless Animals Day;

National Rum Day (US);

National Honey Bee Day (US).

Children's Day (Argentina, Paraguay).

Aug 17

Independence Day (Gabon, Indonesia);

Engineer's Day (Colombia);

Flag Day (Bolivia);

National Vanilla Custard Day (US).

Aug 18

National Science Day (Thailand);

National Tree Planting Day (Pakistan).

Aug 19

World Photography Day;

World Humanitarian Day;

Beekeeper Day (Ukraine);

National Aviation Day (US).

Aug 20

Renewable Energy Day (India);

National Chocolate Pecan Pie Day (US).

Aug 21

World Senior Citizens Day;

Internet Self Care Day;

Youth Day (Morocco);

National Spumoni Day (US).

Aug 22

National Be An Angel Day (US);

National Tooth Fairy Day (US);

National Eat a Peach Day (US).

Aug 23

Flag Day (Ukraine);

National Ride The Wind Day (US);

Go Topless Day (US).

Aug 24

International Strange Music Day;

Independence Day (Ukraine);

National Flag Day (Liberia);

Nostalgia Night (Uruguay);

National Waffle Day (US).

Aug 25

Independence Day (Uruguay);

Youth's Day (Mongolia);

National Kiss and Make Up Day (US);

National Secondhand Wardrobe Day (US).

Aug 26

Women’s Equality Day (US);

National Dog Day (US).

Aug 27

Independence Day (Moldova);

National Burger Day (UK);

National Banana Lovers Day (US).

Aug 28

Daffodil Day;

Grandparents’ Day (Mexico);

National Bow Tie Day (US).

Aug 29

Arbor Day (Argentina);

Qixi Festival (China, Taiwan);

National Sports Day (India);

National Lemon Juice Day (US).

Aug 30

Frankenstein Day;

Nature Day (Finland);

International Bat Night;

Aviation Day (Ukraine);

International Cabernet Sauvignon Day;

Constitution Day (Kazakhstan);

National Beach Day (US);

Holistic Pet Day (US);

Aug 31

National Language Day (Moldova);

Grandparents' Day (Taiwan).

Blog Day.

Emails Subject Lines to Use for August Email Campaigns

And now when you’ve looked through the ideas for content creation, let’s see what email subject lines can fit August campaigns, driving the most attention to your offers.

• ? What’s up August: Freebies, Passion for Fashion & more
• We Had A Robust August | Our Monthly Round-Up (Apt2B);
• Life is a Holiday! ?️ (California Psychics);
• Make September Stylish (With The Best Of August) (Jaypore);
• ? Say Au Revoir To August… (Telflora);
• Raising a glass to August ??? (The Pip Shop);
• 10 Things to do before summer ends (Flight Centre);
• How to Transition to Fall Decor + Fall Fashion Trends (Better Homes and Gardens);
• Shopper, prep early for the upcoming season (Auto Parts Warehouse);
• Hurry, Stock Up!⚡ Our Friendship Day Offer Ends Soon… (Deal Yard);
• ? Make a good move on friendship day deal (Artsmart);
• ? New Sneakers Stay Pawsitive ? (Josefinas);
• Meow! Calling all cat ladies… ?(Thomas Sabo);
• Purrfect day to celebrate our feline friends ? (Apolo);
• 20% Off for World Elephant Day Ends Soon ? (One Tribe Apparel);
• ? Celebrate World Photography Day! Get 35% Off & Free Shipping (CanvasWorld);
• World Photography Day Competition! (Gym+Coffee);
• MPB blog: featuring our favorites for #WorldPhotographyDay. (MPB);
• August 29 is the day to think of security☢️ (Auslogics Labs);
• Re: Celebrating birthdays in August (Fantasy Jewelry Box);
• End your August with these awesome gift picks! (Photobook);
• Summer isn't over yet! (Meshki);
• La Tomatina! The Great Tomato Food Fight of Valencia + 20% Off Your Order (La Tenda);
• Scoop up these Summer favorites before they're gone! (A Cherry On Top Crafts);
• Our X-Mas in August Sale Will Start to Get You in the Holiday Spirit! (Sandals);
• Easy Eats for Camping ? (Savory Spice);
• August in under 30 seconds (Soylent);
• Tick, tock, beat the sunshine clock… (Jet2Holidays);
• Fresh style inspo for fall! (Ethan Allen);
• End Summer Right ❤️?.. Free 2 day shipping (South Beach Swimsuits);
• LABOR DAY SALE! +Spicy Tuesday 20% OFF + August Specials!? (Spices for Less);
• Those end-of-summer blues (Feed);
• August BESTSELLERS on Discount!! (Mirraw);
• New School Year, New Supplies (Blick).

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And lastly, don’t forget to add some colorful images and bright colors to your August campaigns. Summer still rocks the party, so your messages should deliver festive vibes, setting the holiday mood.