April into June is the messiest stretch of the year for a baby wardrobe. One morning it's 52°F and you're reaching for fleece. By 2 p.m., it's 82°F and baby is sweating through a onesie. Then there are the hospital-cold restaurants, the surprise spring rainstorms, and the sudden "when did it get this hot?" Tuesday that catches everyone off-guard.
Here's the honest week-by-week guide we wish someone had handed us — how to shift baby's wardrobe from spring to summer without overbuying, overheating, or packing away the good stuff too early.
The Core Principle: Layers, Not Piles
The single biggest mistake parents make in the transitional season is swapping one full wardrobe for another. You don't need to put away every long-sleeve onesie the minute it hits 75°F. Instead, build a transitional capsule: a rotating mix of lightweight long-sleeve and short-sleeve pieces that work together through May and June.
Week-by-Week Transition Guide
Weeks 1–2 (Mid-April): "Still Chilly, Mostly Spring"
Typical range: 50–68°F
- Keep: bamboo footies, long-sleeve rompers, muslin swaddles, a light sweater or knit cardigan
- Add: a few short-sleeve bodysuits for warm afternoons
- Swap out: heavy fleece, thick knits, wool layers — move to storage
Baby's outfit might be a long-sleeve bamboo bodysuit + a romper on top + a muslin wrap for walks. Easy on/off, easy to strip down when the car heats up.
Weeks 3–4 (Late April): "Mostly Spring, Occasionally Summer"
Typical range: 55–75°F
- Keep: long-sleeve bodysuits, lightweight footies for cooler mornings, cardigans
- Add: short-sleeve rompers, light-weight dresses, muslin and linen pieces
- Start thinking about: first sun hat, swim diaper starter pack
The MVP of this stretch: a short-sleeve bodysuit + pants. You can strip to the bodysuit when it warms up, and layer a cardigan for mornings.
Weeks 5–6 (Early May): "True Transitional"
Typical range: 60–80°F
- Keep: 1–2 long-sleeve bodysuits for cool mornings, a light knit or cotton cardigan
- Heavy rotation: short-sleeve rompers, muslin dresses, cotton bloomer sets
- Add: first pair of swim, a sun hat, bamboo pajamas in short-sleeve/short-leg styles
- Pack away: anything over 60% coverage (long-sleeve + long-leg combos, heavier footies)
Browse our Summer Rompers and Summer Tees & Tops for the in-between pieces that do most of the work this month.
Weeks 7–8 (Mid-May): "Mostly Summer"
Typical range: 65–85°F
- Keep: 1 long-sleeve bodysuit + 1 cardigan for AC overshoots and unexpectedly cool evenings
- Heavy rotation: short-sleeve rompers, dresses, shorts + tee sets, swimwear
- Add: broderie anglaise dresses, bows, sun hats, sandals
- Shift sleepwear: move from long-sleeve bamboo to short-sleeve/short-leg or lightweight sack styles
Weeks 9–10 (Late May / Early June): "Full Summer"
Typical range: 70–90°F
- Main wardrobe: muslin, linen, bamboo short-sleeve, broderie anglaise
- Keep just one cardigan or wrap for AC
- Pack away: anything fleece, heavy knit, or long-sleeve
- Sleep: 0.5 TOG sack + short-sleeve bodysuit, bamboo pajama sets
The "Transitional 10" — What to Own Through the Swap
If you're building a lean transitional wardrobe, aim for roughly 10 core pieces that carry baby from April to mid-June without hundreds of dollars of overlap:
- 2 long-sleeve bamboo bodysuits
- 2 short-sleeve bodysuits
- 1 lightweight knit cardigan or light sweater
- 2 short-sleeve rompers in muslin or cotton
- 1 muslin or cotton dress / bloomer set
- 1 pair of soft cotton or linen shorts + tee
- 1 pair of bamboo pajamas (short-sleeve)
- 1 muslin swaddle / wrap (you'll use this for everything)
- 1 sun hat
- 1 pair of swim + swim diapers
Add a few "fun" seasonal pieces (a broderie anglaise dress, a matching family tee, a special romper for photos) and you're set for the season.
What to Pack Away Right Now
- Fleece everything (pajamas, footies, sleep sacks over 2.5 TOG)
- Heavy knits and wool sweaters
- Thick winter bodysuits with brushed interiors
- Winter hats, gloves, earmuffs
- Snowsuits, thick joggers, and padded layers
Wash, fold, store in a clearly labeled bin (6–12M / 12–18M etc.) — future-you will thank present-you.
What to Keep Handy (Just in Case)
- One long-sleeve bodysuit and one cardigan in the diaper bag — AC in restaurants, grocery stores, and kids' classes is cold
- A muslin swaddle or wrap — instant layer, nursing cover, or shade
- Short leggings or pants for sun protection during dawn/dusk outings when bugs are worst
- A lightweight robe or kimono-style cover-up for cool summer mornings
Fabric Priorities for the Transition
Spring-to-summer is when natural fibers really prove themselves. Prioritize:
- Bamboo viscose — thermoregulating, so it works from 55°F mornings through 80°F afternoons without overheating
- Organic cotton — forgiving across a wide temp range
- Muslin — layer-able and weightless, works May into September
- Linen and linen blends — cooler as the heat climbs, perfect for June onward
Shopping Smart for the Transition
A few quick rules that save money and closet space:
- Buy one size up for mid-summer onward — babies grow fastest in the warm months
- Don't buy multiples of a specific seasonal piece (photo dresses, matching family sets) — one is usually enough
- Build around neutrals and earn your pops of color through accessories (bows, turbans, hats)
- Focus spending on layers and rompers — dresses are fun but rompers are what actually get worn
Our Transitional Picks
- Summer Rompers — muslin, linen, and cotton one-pieces
- Summer Dresses — airy, breathable, photograph-ready
- Summer Tees & Tops — mix-and-match short-sleeve basics
- Bamboo Pajamas — short-sleeve sets for warm nights
- Summer Accessories — sun hats, turbans, bows, lightweight bows
One Last Thing
The spring-to-summer transition is less about a big closet overhaul and more about building a smart rotation. A few lightweight long-sleeves, a pile of short-sleeve rompers, one cardigan you can always find, and a couple of great muslin pieces — that's 90% of it.
Shop the full Summer collection for transitional pieces in bamboo, organic cotton, linen, and muslin — built to breathe, layer, and move with baby from May to September.