PDF SEWING PATTERN | September Coat | Merchant & Mills | UK 6–18

Skill Level: Intermediate
Sizes: UK 6–18
Language: English only

The September Coat PDF sewing pattern by Merchant & Mills is a beautifully oversized coat that blends the relaxed style of a duster with the practicality of a classic overcoat. Designed to be sewn either lined or unlined, this versatile outerwear pattern adapts effortlessly to every season.

Sew the September Coat in heavyweight linen for an elegant everyday layer, Dry Oilskin for a practical weather-resistant coat, wool for winter warmth or denim and canvas for a timeless workwear-inspired look. Its generous fit makes it ideal for layering over sweaters and jackets throughout the year.

The September Coat has an intentionally oversized silhouette. We recommend comparing your measurements with the finished garment measurements to achieve your preferred amount of ease.

All seam allowances are 1.5 cm (⅝") unless otherwise stated and are included in the pattern.

Looking for extended sizes? The September Coat PDF Sewing Pattern is also available in UK sizes 18–28.

• Oversized overcoat or duster coat
• Lined or unlined construction
• Classic button-front closure
• Relaxed silhouette for comfortable layering
• Suitable for all seasons depending on fabric choice
• Designed for UK sizes 6–18
• Intermediate sewing project

The September Coat is designed for medium to heavyweight woven fabrics.

• Mid to heavyweight linen
• 7–12 oz denim
• Wool
• Corduroy
• Cotton twill
• Canvas

Recommended lining fabrics:

• Barrier Lining (recommended for Oilskin)
• Cotton voile
• Lightweight linen
• Cotton poplin
• Hemp/cotton blends
• Lightweight wool
• Traditional slip lining

A heavier fabric creates a more structured coat, while linen offers a softer, casual drape.

• Matching sewing thread
• 5 buttons measuring approximately 2 cm (¾")
• 1.3 m (1½ yd) interfacing (optional but recommended for most fabrics)

• Size 6: Bust 78 cm (30¾"), Waist 61 cm (24"), Hips 86 cm (34")
• Size 8: Bust 82 cm (32¼"), Waist 65 cm (25½"), Hips 90 cm (35½")
• Size 10: Bust 86 cm (33¾"), Waist 69 cm (27"), Hips 94 cm (37")
• Size 12: Bust 91 cm (35¾"), Waist 74 cm (29"), Hips 99 cm (38¾")
• Size 14: Bust 96 cm (37¾"), Waist 79 cm (31"), Hips 104 cm (41")
• Size 16: Bust 100 cm (39¼"), Waist 84 cm (33"), Hips 109 cm (43")
• Size 18: Bust 106 cm (41¾"), Waist 89 cm (35"), Hips 114 cm (44")

• Size 6: Bust 112.5 cm (44¼"), Waist 116 cm (45¾"), Hips 121 cm (47¾"), Length 117 cm (46"), Sleeve Length 47.7 cm (18"), Bicep 43.5 cm (17")
• Size 8: Bust 116.5 cm (45¾"), Waist 120 cm (47¼"), Hips 125 cm (49¼"), Length 117.5 cm (46¼"), Sleeve Length 47.7 cm (18"), Bicep 44.5 cm (17½")
• Size 10: Bust 120.5 cm (47½"), Waist 124 cm (49"), Hips 129 cm (50¾"), Length 118 cm (46½"), Sleeve Length 47.7 cm (18"), Bicep 45.5 cm (18")
• Size 12: Bust 125.5 cm (49½"), Waist 129 cm (50¾"), Hips 134 cm (52¾"), Length 118.5 cm (46¾"), Sleeve Length 47.7 cm (18"), Bicep 46.7 cm (18½")
• Size 14: Bust 130.5 cm (51½"), Waist 134 cm (52¾"), Hips 139 cm (53¾"), Length 119 cm (46¾"), Sleeve Length 47.7 cm (18"), Bicep 48 cm (18⅞")
• Size 16: Bust 135.5 cm (53¼"), Waist 139 cm (53¾"), Hips 144 cm (56¾"), Length 119.5 cm (47"), Sleeve Length 47.7 cm (18"), Bicep 49.2 cm (19¼")
• Size 18: Bust 140.5 cm (55¼"), Waist 144 cm (56¾"), Hips 149 cm (58¾"), Length 120 cm (47¼"), Sleeve Length 47.7 cm (18"), Bicep 50.5 cm (20")

Fabric requirements apply to fabric with or without nap. The same yardage applies to both the outer fabric and the lining.

• 110 cm (43") wide: Sizes 6–10: 4 m (4½ yd); Sizes 12–14: 4.05 m (4½ yd); Sizes 16–18: 4.3 m (4¾ yd)
• 120 cm (47") wide: Sizes 6–10: 3.95 m (4¼ yd); Sizes 12–14: 3.95 m (4¼ yd); Sizes 16–18: 4.05 m (4½ yd)
• 140 cm (55") wide: Sizes 6–10: 3.45 m (3¾ yd); Sizes 12–14: 3.7 m (4 yd); Sizes 16–18: 3.8 m (4¼ yd)
• 150 cm (60") wide: Sizes 6–10: 3.1 m (3½ yd); Sizes 12–14: 3.1 m (3½ yd); Sizes 16–18: 3.45 m (3¾ yd)

• A0 copy shop 5 pages 
• A4 home printing 78 pages
• Compatible with A4 and US Letter paper
• Illustrated sewing instructions in English
• Instant PDF download

The September Coat is the ultimate oversized layering piece. Whether you choose linen for a relaxed spring coat, Oilskin for rainy days or wool for winter warmth, this timeless design adapts beautifully to every season and will become a staple in your handmade wardrobe.

This pattern is supplied as a digital PDF download in English. No paper pattern will be shipped.