How to Crochet a Flower Sun Hat

There is something deeply satisfying about wearing a hat you made with your own hands. It sits differently on your head — lighter somehow, more personal — and every time someone compliments it, you get to say those five wonderful words: “Thank you, I made it.” A crocheted flower sun hat is one of those projects that feels ambitious when you start but turns out to be completely achievable, even if you are still building your skills. It is also the kind of finished object that gets worn constantly through spring and summer, making it one of the most practical things you can create with a hook and some yarn.

This guide walks you through the entire process, from choosing the right materials to finishing the brim with a floral embellishment that makes this hat something special. Whether you are a beginner who has just mastered the basics or an intermediate crocheter looking for a satisfying weekend project, you will find everything you need here.

What You Will Need Before You Start

Getting your materials right before you begin makes the whole process smoother and more enjoyable. Rushing off to start with the wrong yarn or hook size is one of the most common reasons people run into trouble with hat patterns, so take a few minutes to gather everything together first.

Yarn: For a sun hat, you want a yarn that has some structure and can hold its shape without being stiff or scratchy. Cotton yarn is the gold standard for this type of project. It is breathable, washes well, and has just the right amount of body to keep a brim pointing outward rather than flopping around. Look for a worsted weight or DK weight cotton, or a cotton-blend that includes a small amount of linen or nylon for added durability. You will need approximately 200 to 300 yards depending on the size of the hat and the width of the brim you choose. Pick up an extra skein in a coordinating color if you plan to make the flower embellishment in a contrasting shade.

Hook: A size 4mm (G/6) or 5mm (H/8) crochet hook works well with most DK and worsted weight cotton yarns. The finished hat should be firm enough to hold its shape but not so tightly crocheted that it feels rigid. If your tension tends to run tight, go up half a size.

Notions: You will need a yarn needle for weaving in ends, a tape measure, and a handful of stitch markers. Stitch markers are genuinely important for this pattern because you will be working in continuous rounds, and losing track of where each round begins is easier than it sounds.

Optional: A hat form or a balloon inflated to roughly head size can be helpful for blocking the finished hat. A spray bottle with water and some blocking pins will also help if you want a crisp, professional finish.

Understanding Hat Sizing

Before you pick up your hook, measure the head the hat is intended for. Wrap a soft measuring tape around the widest part of the head, just above the ears and across the forehead. Write that measurement down.

Most adult heads fall somewhere between 21 and 23 inches in circumference. Children’s heads vary more widely, so if you are making this for a child, measure carefully. The hat crown you crochet should measure roughly one inch smaller than the actual head circumference — this negative ease ensures a comfortable, snug fit that will not blow off in a breeze.

The brim adds visual impact and sun protection but does not affect the crown fit, so you can adjust brim width to your taste once the crown is complete.

The Basic Technique: Working in Continuous Rounds

Crocheted hats are worked from the top down, starting with a small ring at the crown and expanding outward by increasing stitches in each round until the hat reaches the right circumference. You then work even rounds (no increases) to build the depth of the crown, and finally flare out again with increases for the brim.

If you have crocheted flat circles before — coasters, pot holders, granny squares worked in the round — this will feel immediately familiar. The main difference is that hats use a slightly different increase formula to keep the fabric from cupping inward or ruffling outward, both of which are problems you want to avoid.

The most reliable start for a hat crown is the magic ring, sometimes called an adjustable ring. It lets you close the center of the hat tightly so there is no hole at the top. If you have not used a magic ring before, practice it a few times on scrap yarn before you begin. It is not difficult, but it does take a little practice to execute cleanly.

The Pattern: How to Crochet a Flower Sun Hat

This pattern is written for an adult head with a circumference of 22 inches. Notes for adjusting sizing are included throughout. The finished hat will have a brim approximately three inches wide.

Abbreviations used:

• ch — chain
• sl st — slip stitch
• sc — single crochet
• dc — double crochet
• hdc — half double crochet
• inc — increase (two single crochets in the same stitch)
• MR — magic ring
• BLO — back loop only

Part One: The Crown

Round 1: Start with a magic ring. Work 6 sc into the ring. Pull the ring closed. (6 stitches)

Round 2: Inc in each stitch around. (12 stitches)

Round 3: Sc 1, inc 1 — repeat around. (18 stitches)

Round 4: Sc 2, inc 1 — repeat around. (24 stitches)

Round 5: Sc 3, inc 1 — repeat around. (30 stitches)

Round 6: Sc 4, inc 1 — repeat around. (36 stitches)

Round 7: Sc 5, inc 1 — repeat around. (42 stitches)

Round 8: Sc 6, inc 1 — repeat around. (48 stitches)

Round 9: Sc 7, inc 1 — repeat around. (54 stitches)

Round 10: Sc 8, inc 1 — repeat around. (60 stitches)

Round 11: Sc 9, inc 1 — repeat around. (66 stitches)

Round 12: Sc 10, inc 1 — repeat around. (72 stitches)

At the end of Round 12, measure the flat circle. It should be approximately 8 to 9 inches in diameter. If you are working with a larger hook or looser tension, your circle may already be large enough. Hold the circle up and check whether it fits over the crown of the head you are sizing for. You want it to fit snugly with just a little resistance.

If you need a smaller hat, you can stop increasing a round or two earlier. If you need a larger hat, add another round of increases following the same formula: add one more single crochet between increases each time.

Part Two: The Sides of the Hat

Once the crown circle is the right size, you stop increasing and begin working straight rounds to build the depth of the hat. This is where the hat shifts from looking like a flat disc to looking like a hat.

Rounds 13 through 24: Sc in each stitch around, no increases. (72 stitches each round)

This creates approximately 4.5 to 5 inches of depth, which suits most adult heads. If you are making a hat for someone with a longer face or who prefers a deeper crown, add a few more rounds here. If the hat is for a child, subtract a couple of rounds.

After Round 24, try the hat on (or place it on your head form or balloon) and check the fit. The edge should sit comfortably just above the ears. If it is too shallow, work a few more even rounds.

Part Three: The Brim

The brim is crocheted by increasing the stitch count again over several rounds, which pushes the fabric to flare outward. The key is increasing gradually so the brim lies flat rather than ruffling.

Round 25: Sc 5, inc 1 — repeat around. (84 stitches)

Round 26: Sc in each stitch around. (84 stitches)

Round 27: Sc 6, inc 1 — repeat around. (96 stitches)

Round 28: Sc in each stitch around. (96 stitches)

Round 29: Sc 7, inc 1 — repeat around. (108 stitches)

Round 30: Sc in each stitch around. (108 stitches)

Round 31: Sc 8, inc 1 — repeat around. (120 stitches)

Round 32: Sc in each stitch around. (120 stitches)

At this point your brim should be about 2.5 to 3 inches wide and lying flat or nearly flat. If you want a wider brim for more sun coverage, continue the pattern by working one increase round followed by one plain round, adding 12 stitches each increase round.

Final round of brim: Work a round of sc in BLO (back loop only). This creates a subtle ridge that gives the brim edge a polished, finished look and discourages it from curling upward.

Slip stitch to the first stitch to close the round, then fasten off and weave in your ends.

How to Crochet the Flower Embellishment

This is where the hat earns its name. A large, layered crocheted flower pinned or sewn to the brim turns a simple sun hat into something genuinely eye-catching. You can make it in a matching color for a monochromatic look, or choose a bold contrast color that pops against the hat.

The flower is made in three layers: a base layer of wide petals, a middle layer of slightly smaller petals, and a small center circle. The layers are stacked and sewn together before being attached to the hat.

Layer One: Large Petals

Round 1: Make a magic ring. Work 6 sc into the ring. Pull ring closed and slip stitch to join. (6 stitches)

Round 2: Ch 3 (counts as first dc), work 2 dc in the same stitch. Ch 2, skip 1 st, 3 dc in next st. Repeat from * twice more. Ch 2, skip 1 st, sl st to top of beginning ch-3 to join. (Four groups of 3 dc, four ch-2 spaces)

Wait — for a flower, you want petals that look soft and rounded, not squared off like a granny square. Here is the petal approach:

Round 1: Magic ring, 6 sc into ring. Join with sl st. (6 stitches)

Round 2: Ch 4, skip 1 st, sl st in next st. Repeat around. (3 chain loops)

Round 3: For each chain loop, work: sl st into loop, ch 1, then work (5 dc, ch 1, 5 dc) into the loop, ch 1, sl st into the loop. This creates one large rounded petal per loop. (3 large petals)

For 5 petals instead of 3, which gives a more traditional flower look, adjust Round 1 to 10 sc and Round 2 to ch 4, skip 1, sl st 1 around, giving you 5 loops. Work the same petal construction into each loop.

Fasten off, leaving a long tail for sewing.

Layer Two: Smaller Petals

Repeat the flower pattern above, but in Round 3, replace the 5 dc clusters with 3 dc clusters. This creates shorter, narrower petals. Fasten off, leaving a tail.

Layer Three: The Center

Round 1: Magic ring. Work 6 sc into ring. Pull ring closed. Do not join, just slip stitch to fasten off, leaving a tail. Pull the tail through to the back with your yarn needle so the little circle stays compact and tidy.

Assembling the Flower

Stack the three layers with the large-petal layer on the bottom, the small-petal layer on top of that offset so the petals of the second layer peek out between the petals of the first, and the center circle sitting on top of everything. Thread your yarn needle with a length of yarn and sew through all three layers a few times to hold them securely together. Knot off neatly on the back.

Attaching the Flower to the Hat

You have two choices here. Sewing the flower directly to the hat is the most secure option and works best if you want a permanently decorated hat. Use a yarn needle and matching thread or yarn to stitch the back of the flower to the brim, sewing around the outer edges of the base layer so it lies flat against the fabric.

The second option is to attach the flower with a large decorative pin or a brooch back, which lets you remove it for washing or swap it onto a different hat. If you go this route, sew a small square of felt to the back of the flower and attach the pin back to the felt — this protects the crocheted yarn from tearing under the weight of the pin over time.

Position the flower toward one side of the brim, roughly at the nine o’clock or three o’clock position as you look at the hat straight on. This asymmetric placement is more flattering than centering the flower at the front and gives the hat that casual, effortless quality that makes crocheted accessories look so appealing.

Finishing Touches and Blocking

Even the neatest crocheting looks better after blocking, and for a sun hat, blocking can make the difference between a hat that lies beautifully and one that looks slightly lumpy or uneven.

Wet blocking is the easiest method for cotton yarn. Submerge the finished hat in cool water, gently squeeze out excess water without wringing, and then shape the hat over your form or a balloon inflated to the right head size. Use your hands to smooth the crown and coax the brim into lying flat. If you want a crisper brim, pin it flat against a foam blocking board and let it dry completely.

Cotton dries relatively quickly — usually within a day or two at room temperature. Once dry, the yarn fibers will have set in their new positions and the hat will hold its shape beautifully.

Care and Washing

One of the great advantages of cotton yarn is how easy it is to wash. Most cotton sun hats can be hand washed in cool water with a gentle detergent, then reshaped and air dried flat. Avoid putting crocheted cotton in a hot dryer, as heat can cause cotton to shrink and distort the shape you worked so hard to achieve.

If your hat gets sandy or dusty during a beach day, simply shake it out and give it a light brush before storing. For deeper cleaning, a gentle soak does the trick without damaging the fiber or the flower embellishment.

Tips for Customizing Your Hat

Once you have made one flower sun hat, it is very easy to make it your own. A band of contrast color along the brim edge adds graphic impact — simply change yarn colors at the start of the brim section and work the final few rounds in a different shade. A ribbon threaded through the stitches just above the brim adds a vintage, cottagecore feel. You can also experiment with different flower styles: a sunflower made with long, narrow petals in yellow with a dark brown center looks striking, while a layered rose built from a long strip of crocheted fabric rolled into a spiral creates a more sophisticated look.

The basic hat structure is also wonderfully versatile. With a tighter yarn and a smaller hook, the same pattern produces a structured bucket hat or a sun hat with a shorter brim. Swap in a chunky cotton and go up to a 6mm hook for a more relaxed, oversized look that suits beach days and summer festivals equally well.

A Few Words on Troubleshooting

If your hat crown is ruffling, you have too many increases — this usually means your tension is tighter than the pattern was written for, and you are gaining more stitches per inch than expected. Try going down half a hook size or reducing the number of increase rounds.

If the crown is cupping inward and refuses to lie flat, you likely need more increases. Add another round following the pattern before switching to the straight rounds for the sides.

If the brim is flipping upward at the edges, it needs more increases. Work an additional increase round at the outer edge of the brim to encourage it to lie flat.

Crocheting a flower sun hat is one of those projects that gives you a great deal of reward for a modest investment of time and materials. From start to finish, most crafters complete the hat in a few evenings of relaxed crocheting — perfect for winding down at the end of the day with a good podcast or a favorite playlist in the background. The finished hat is something you can