Half Birthday Ideas: Six-Month Celebrations That Fit

A half birthday is a small celebration six months after a birthday, and it suits two very different kids. For a six-month-old baby, keep it tiny and at home: a photo, a handprint, a half cake for the grown-ups and a letter you’ll be glad you wrote. For a child whose real birthday lands in summer break or right on a holiday, the half birthday is their chance at the school-day treat and the friends party they never get. Here are half birthday ideas for both, plus how to work out the date when the math gets weird.

Half birthday ideas for a six-month-old baby

Six months is a real milestone. Many babies are sitting with support, laughing out loud and getting ready to try first foods. The baby won’t remember any of it, so this one is for you and for the baby book. Pick two or three of these, not all of them.

The half cake (for the grown-ups)

Bake or buy a small round cake, cut it in half and put one half on the plate. That’s the whole joke, and it photographs beautifully. Top it with one candle cut short.

The cake is for the adults. The CDC’s infant nutrition guidance says that “children younger than 24 months should not have added sugars,” and “do not give your child honey before 12 months.” If your pediatrician has given you the green light to start solids, baby’s “cake” can be a spoonful of their first food, like mashed banana or avocado, served in a fancy little bowl. HealthyChildren notes that the AAP recommends only breast milk for about the first six months, and lists readiness signs such as good head control in a high chair and reaching for your food. So the six-month mark is often right when that first taste happens anyway.

A handprint or footprint keepsake

Six-month hands are still tiny but chubby enough to print clearly. An inkless kit like the Pearhead Inkless Baby Hand and Footprint Kit skips the paint on the sofa. Do it right after a nap, when your baby is happy to hold still for three seconds. Date it on the back.

The six-month photo

If you’ve been taking monthly photos, this is the halfway one. Use the same spot, the same blanket and the same stuffed animal for scale. If you haven’t, start now. Six months and twelve months side by side is a picture you’ll keep forever.

A letter to your baby at six months

Write down six things: what makes them laugh, their nicknames, what they hate (bath time? socks?), the song that calms them, who visits most, and one thing you never want to forget. If you’re planning a first birthday time capsule, this letter is the first thing to go in it.

Time it around the naps

Most six-month-olds are on two or three naps, and Betteroo’s guide to a typical six-month nap rhythm puts wake windows at roughly two to three hours. Do the photo and the cake right after a nap ends, invite grandparents for an hour at most, and keep bedtime exactly where it always is. The same logic runs the whole first birthday party nap math, just in miniature.

Half birthday ideas for summer and holiday birthday kids

A child born in July never gets cupcakes in class. A child born on December 23 shares their day with Christmas. A half birthday gives them a turn.

• The class treat. Send something in on the half birthday instead. Check the school’s food policy first, since many classrooms now ask for non-food treats. Stickers, pencils or a book donated to the class library in the child’s name all work.
• A half-day of yes. For half a day, say yes to their choices: breakfast, the park, the movie, what’s for dinner. It costs almost nothing and they’ll talk about it for weeks.
• Half-and-half everything. Half a pancake stacked on half a waffle. Sing half of “Happy Birthday” and stop. Wrap a gift in half the paper. Kids think this is the funniest thing ever.
• The friends party they never get. If summer birthdays mean half the class is away, hold the friends party six months later, in January or February, and keep the real birthday for family. Our guide to celebrating a birthday at home has the no-theme version if you want something small.
• A half-sized gift. One small present, or half of a big one: the scooter now, the helmet on the real birthday.
• Half-birthday interview. Ask the same five questions every half birthday (favorite food, best friend, what do you want to be) and keep the answers. Over the years it becomes a lovely record.

How to work out the half birthday date

Count six months forward from the birthday. Born March 10? The half birthday is September 10. Born July 4? January 4.

The tricky ones are the end-of-month birthdays. If a child is born on August 30 or 31, there’s no February 30 or 31, so pick the last day of February. For a February 29 birthday, the half birthday is August 29, which conveniently exists every year.

A one-hour half-birthday plan

1. Ten minutes: the photo, while everyone’s fresh.
2. Ten minutes: the handprint or the interview.
3. Fifteen minutes: the half cake and half a song.
4. The rest: play, then wave everyone off before anyone gets tired.

That’s it. A half birthday is supposed to be half the work!

FAQ

What do you do for a baby’s half birthday?

Keep it small and at home: a six-month photo, a handprint or footprint keepsake, a half cake for the grown-ups and a short letter to your baby. If your pediatrician says solids can start, baby can have a taste of a first food instead of cake.

Can a six-month-old eat cake?

Not the frosted kind. The CDC says children younger than 24 months should not have added sugars, and no honey before 12 months. Give the cake to the adults and baby a spoonful of a first food if they’ve started solids.

Why do people celebrate half birthdays?

Usually for one of two reasons: a baby reaching six months, or a child whose real birthday falls in summer break or on a holiday, so they never get the school treat or a friends party.

When is the half birthday for someone born on the 31st?

Count six months forward. If that month has no 31st, use the last day of the month instead. For example, a child born August 31 celebrates on the last day of February.

Half the cake, all the fun. Happy half birthday, friend!