What to Wear in 40 Degree Weather: Men's Layering Guide (2026)

What to wear in 40 degree weather: the four-layer formula for men, the pieces that make it work, and what they cost.

Last updated: September 2026

At 40 F, wear four layers: a tee or long sleeve, a fleece or knit, a padded coat with a hood, and a beanie with boots. Forty degrees is where a jacket alone stops working. Wind and damp decide whether it feels like 45 or 30, so the layers below let you add or drop warmth through the day. The four Adam & Westcott picks total $237.95.

In this article

• What are the four layers?
• How do you adjust for wind and rain?
• What size coat over a fleece?
• The pieces
• FAQ

What are the four layers for 40 degree weather?

Base, mid, outer and extremities: a tee, a $49.99 fleece, a $99.99 padded coat, a $34.98 beanie and $52.99 boots.

Layer	Adam & Westcott pick	What it does	Sizes	Price
Base	Your own tee or long sleeve	Sits next to the skin	Your size	n/a
Mid	Micro Brushed Fleece	Brushed fleece, collar zips up round the neck	XS to 2XL	$49.99
Outer	Long Puffer Coat	Padded quilting, covers past the hips, hood with drawcords	XS to 6XL	$99.99
Head	Cuffed Knit Beanie	Turn-up cuff sits over the ears	One size	$34.98
Feet	Padded Collar Boot	Padded ankle collar, chunky wavy sole	US 6 to 14	$52.99
Total	Four pieces			$237.95

The mid layer is the one most men skip, and it is the difference between comfortable and cold by lunchtime. A fleece that zips at the collar lets you vent it indoors without taking it off.

How do you adjust for wind, sun and rain at 40 degrees?

Still and sunny: swap the coat for a jacket. Windy: hood up, fleece zipped, beanie on. Wet: hood up and boots instead of mesh sneakers.

If you are walking fast or working outside, wear one layer less than you think, because you warm up within ten minutes. On a still, bright 42, a cord jacket or a vest over the fleece is enough. If you prefer a knit to fleece, the Soft Waffle Pullover ($44.99, S to 3XL) does the same job with a zip neck.

What size coat do you need over a fleece?

Your usual size: the puffer here runs XS to 6XL, ten sizes, and is cut with room for a sweater underneath.

The fleece runs XS to 2XL, so if you wear 3XL or above, choose the waffle pullover as your mid layer instead. Adam & Westcott publishes no inch chart for its coats, so buy by letter; what size coat should I buy walks through the full size run.

The pieces

Frequently asked questions

Is 40 degrees cold enough for a winter coat?

Yes for standing about or walking slowly, especially in wind. A padded coat over a fleece is the simplest answer.

What should a man wear in 40 degree weather?

Four layers: a tee or long sleeve, a fleece or knit, a padded coat with a hood, then a beanie and boots. At Adam & Westcott the four picks here total $237.95.

Can you wear jeans at 40 degrees?

Yes. Dark denim or slim trousers are fine with boots and warm socks.

What size coat should I buy to wear over a fleece?

Your usual size. The Long Puffer Coat runs XS to 6XL and is cut with room for a sweater underneath.

What should I wear at 50 degrees instead?

One layer less: drop the coat and wear a jacket or vest over the fleece.

Related: what size coat to buy, what to wear at 50 degrees, puffer vs parka, and for presents, the Adam & Westcott gift guide.