When the heat arrives, choosing the right men's summer pajamas makes the difference between a restful night’s sleep and tossing and turning in bed. In this complete guide, we explain which materials work best, which cuts are coolest, and how to get the right size for summer 2026. At El Búho Nocturno, a Spanish family business with more than 60 years and 3 generations of master tailors, we manufacture in Spain and Portugal the freshest and most durable men's summer pajamas on the market.
Why does summer pajamas matter?
Body temperature naturally drops during sleep. If your sleepwear is not breathable, the body cannot properly regulate that temperature drop and you wake up sweaty, uncomfortable, and with interrupted sleep. A good men's summer pajama in cotton acts as a natural thermal regulator: it absorbs moisture, allows air circulation, and maintains a stable temperature throughout the night.
The best materials for men's summer pajamas
| Material | Breathability | Softness | Durability | Ideal for |
|---|---|---|---|---|
| 100% cotton poplin | ✅ Maximum | ✅ High | ✅ Very high | Classic summer, gift |
| Cotton knit | ✅ High | ✅ Maximum | ✅ High | Maximum comfort, movement |
| Pure polyester | ❌ None | ⚠️ Variable | ⚠️ Medium | Avoid in summer |
| Synthetic blend | ⚠️ Reduced | ⚠️ Variable | ⚠️ Medium | Avoid in summer |
100% cotton poplin — the king of summer
Cotton poplin is the most recommended fabric for summer for several reasons: breathable and absorbent, it efficiently removes moisture from the skin; soft to the touch without irritating sensitive skin; great color definition in checkered and striped prints; and very durable, it withstands frequent washing without losing shape or softness. At El Búho Nocturno all our short summer pajamas are made from 100% cotton poplin or 160 g/m² cotton knit, the ideal weight for warm nights.
Cotton knit — maximum comfort and elasticity
Cotton knit is more elastic than poplin, especially comfortable for those who move a lot during sleep. Without a fly, with an elastic waistband and wide legs: the freest and coolest option. Also available in loose pajama pants and pajama shirts sold separately.
Short pajamas vs long pajamas in summer: which to choose?
| Short pajamas | Long pajama in fine poplin | |
|---|---|---|
| Ideal temperature | +22°C without air conditioning | With air conditioning or cool areas |
| Ventilation | Maximum (legs and arms free) | Good (fine poplin breathes well) |
| Versatility | Also as homewear | More formal, just for sleeping |
| Collection | See short pajamas | See long pajamas |
Size guide for men's summer pajamas
At El Búho Nocturno the cut is regular loose — designed for maximum comfort during rest. Available from S to 5XL. Check our complete size chart to get it right the first time.
| Size | Equivalent | Chest (cm) | Waist (cm) |
|---|---|---|---|
| M | Size 3 | 96–100 | 82–86 |
| L | Size 4 | 100–104 | 86–90 |
| XL | Size 5 | 104–108 | 90–94 |
| XXL | Size 6 | 108–116 | 94–102 |
| XXXL | Size 7 | 116–124 | 102–110 |
| 4XL | Size 8 | 124–132 | 110–118 |
| 5XL | Size 9 | 132–140 | 118–126 |
Tip: if you are unsure between two sizes, choose the larger one. The pajamas should fit loosely to avoid restricting movement during sleep.
The best-selling summer pajamas in 2026
1. Short pajama with judo collar in checkered poplin
The most classic and best-selling. Judo collar without buttons, shorts with elastic waistband and side pockets. 100% cotton poplin in checkered blue, white, and multicolor. Fresh, elegant, and very comfortable. See collection.
2. Short pajama with placket collar in plain knit
For those who prefer knit over poplin. More elastic, no fly, with a wide elastic waistband. Solid colors in navy blue, gray, and green. The favorite of those who move a lot during sleep. See collection.
3. Loose pajama shorts
If you already have a T-shirt and only need the bottom, our pajama shorts are sold separately. 100% cotton poplin or 85/15 knit.
Complete your summer wardrobe
The perfect summer pajamas are complemented by:
- Cotton boxers — fresh and comfortable underwear for summer
- Pajama T-shirts — to pair with shorts
- Cotton polos — for summer daytime loungewear
- See the entire men's pajamas collection
How to care for your summer pajamas so they last for years
- Wash at 30°C on a delicate or normal cycle. Better preserves color and shape.
- Do not overuse fabric softener — it reduces cotton’s absorbency over time.
- Air dry whenever possible. High-temperature dryers shrink cotton.
- Do not use bleach — it destroys cotton fibers and fades prints.
- Rotate between 2–3 pajamas — letting the garment rest between washes extends its lifespan.
Summer pajama as a gift for men
A quality summer pajama is one of the most practical and appreciated gifts for men. Some tips to get it right:
- If you don’t know the exact size, choose one size up — the loose fit is forgiving.
- The classic checkered patterns in blue and white are the most timeless.
- Pair the pajama with some cotton boxers for a complete gift.
👉 See the entire summer pajama collection — El Búho Nocturno — Shipping in 24-48h. Free 30-day returns. Sizes S-5XL.
Frequently asked questions about men's summer pajamas
What is the best fabric for a summer pajama?
The 100% cotton poplin is the best fabric for summer: breathable, soft, durable, and with great color definition. Cotton knit is a more elastic and comfortable alternative for those who prefer unstructured fabrics.
Is the short or long pajama better in summer?
It depends on your bedroom temperature. Without air conditioning and with temperatures above 22°C, the short pajama is clearly better. With air conditioning or in cooler areas, the long poplin pajama is also a valid option.
What pajama size should I choose?
Choose your usual size or one size up. Our pajamas have a regular loose fit. Check the size chart to get it right.
Can summer pajamas be used as loungewear?
Yes. The classic design of our poplin pajamas makes them perfectly suitable for staying at home, going out for the newspaper, or receiving informal visitors.
How much does a good summer pajama cost?
A quality summer pajama in 100% cotton poplin costs between €25 and €45. Below that price, the fabric quality usually suffers. Above it, you are paying for premium materials like bamboo or silk.
Where are El Búho Nocturno pajamas made?
In Spain and Portugal, with over 60 years of tailoring tradition. European manufacturing with quality control in every garment. Trustpilot 4.7/5.