When the heat arrives, choosing the right men's summer pyjamas 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 over 60 years and 3 generations of master tailors, we manufacture in Spain and Portugal the coolest and most durable men's summer pyjamas on the market.
Why does summer pyjamas matter?
Body temperature naturally drops during sleep. If your sleepwear is not breathable, the body cannot regulate this temperature drop well, and you wake up sweaty, uncomfortable, and with interrupted sleep. A good men's summer pyjama 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 pyjamas
| 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
The 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 colour definition in checked and striped prints; and very durable, it withstands frequent washing without losing shape or softness. At El Búho Nocturno all our short summer pyjamas are made of 100% cotton poplin or 160 g/m² cotton knit, the ideal weight for warm nights.
Cotton knit — maximum comfort and elasticity
The 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 pyjama bottoms and pyjama shirts sold separately.
Short pyjamas vs long pyjamas in summer: which to choose?
| Short pyjamas | Long pyjama 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 loungewear | More formal, just for sleeping |
| Collection | See short pyjamas | See long pyjamas |
Size guide for men's summer pyjamas
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 hesitate between two sizes, choose the larger one. The pyjama should fit loosely to avoid restricting movement during sleep.
The best-selling summer pyjamas in 2026
1. Short pyjama with judo collar in checked poplin
The most classic and best-selling. Judo collar without buttons, shorts with elastic waistband and side pockets. 100% cotton poplin in checked blue, white, and multicolour. Fresh, elegant, and very comfortable. See collection.
2. Short pyjama with placket collar in plain knit
For those who prefer knit over poplin. More elastic, no fly, with a wide elastic waistband. Solid colours in navy blue, grey, and green. The favourite of those who move a lot during sleep. See collection.
3. Loose pyjama shorts
If you already have a shirt and only need the bottom, our pyjama shorts are sold separately. 100% cotton poplin or 85/15 knit.
Complete your summer wardrobe
The perfect summer pyjamas are complemented by:
- Cotton boxers — fresh and comfortable underwear for summer
- Pyjama shirts — to pair with shorts
- Cotton polos — for summer daytime loungewear
- See the entire men's pyjamas collection
How to care for your summer pyjamas to make them last for years
- Wash at 30°C on a delicate or normal cycle. Better preserves colour and shape.
- Do not overuse fabric softener — it reduces cotton’s absorbency over time.
- Air dry whenever possible. High heat in the dryer shrinks cotton.
- Do not use bleach — it destroys cotton fibres and fades prints.
- Rotate between 2–3 pyjamas — letting the garment rest between washes extends its lifespan.
Summer pyjama as a gift for men
A quality summer pyjama 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 checked patterns in blue and white are the most timeless.
- Pair the pyjama with some cotton boxers for a complete gift.
👉 See the entire summer pyjama collection — El Búho Nocturno — Delivery in 24-48h. Free 30-day returns. Sizes S-5XL.
Frequently asked questions about men's summer pyjamas
What is the best fabric for a summer pyjama?
The 100% cotton poplin is the best fabric for summer: breathable, soft, durable, and with great colour definition. Cotton knit is a more elastic and comfortable alternative for those who prefer unstructured fabrics.
Is the short or long pyjama better for summer?
It depends on your bedroom temperature. Without air conditioning and with temperatures above 22°C, the short pyjama is clearly better. With air conditioning or in cooler areas, the long poplin pyjama is also a valid option.
What pyjama size should I choose?
Choose your usual size or one size up. Our pyjamas have a regular loose fit. Check the size chart to get it right.
Can summer pyjamas be used as loungewear?
Yes. The classic design of our poplin pyjamas makes them perfectly suitable for staying at home, going out for the newspaper, or receiving informal visitors.
How much does a good summer pyjama cost?
A quality summer pyjama 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 pyjamas made?
In Spain and Portugal, with over 60 years of tailoring tradition. European manufacturing with quality control on every garment. Trustpilot 4.8/5.