2026.10.24

Winter Aji Fishing in Japan: A Beginner’s Guide to Night Pier Ajing (Nov–Mar)

minagiman

When the surf gets too cold, many Japanese anglers switch to ajing — light-lure fishing for aji (Japanese horse mackerel). An hour or two after work under a pier light, with super-light tackle: easy to start, but deep enough that people get hooked. Here are the basics for beginners.

Ajing means catching aji with a tiny jighead and soft plastic. You use lures of just a few grams and hook very small bites — that game-like feel is why it is so popular. Aji are around all year, but pier ajing peaks from autumn into winter, and November to March is the classic night-time season.

Contents

Why winter is ajing season
Tackle and budget
Ester or PE?
Choosing jighead weight
Where and when
Basic technique
When they will not bite
Staying warm and safe
Minagiman’s take
Read next

Why winter is ajing season

Aji gather around pier lights, following plankton and tiny baitfish.
You can fish short night sessions — one or two hours is enough.
Tackle is light and cheap: about 20,000–30,000 yen to start.
Piers have safe footing — good for beginners and families.
Winter aji can be wonderfully oily and delicious.

Tackle and budget

Item	Guide	Approx. cost
Rod	5–6 ft dedicated ajing rod (UL–L)	10,000–15,000 yen
Reel	Light 1000–2000 spinning reel	10,000–15,000 yen
Main line	Ester #0.3 (or PE #0.2–0.3)	~1,500 yen
Leader	Fluorocarbon #0.8–1	~1,000 yen
Jigheads	0.6–2 g	300–500 yen a pack
Soft plastics	1.5–2 inch	400–500 yen a pack
Others	Headlamp, scissors, fish grip	a few thousand yen

Entry series such as Shimano’s Soare BB or Daiwa’s Gekkabijin are a safe start.

Ester or PE?

Line	Character	Best for
Ester	Very little stretch, high sensitivity, handles light jigheads well — but weak against sudden shock	Dedicated ajing
PE	Strong and casts far, but catches wind and can be awkward with very light jigheads	Sharing with mebaru and other fishing

For dedicated ajing, ester #0.3 with a #0.8–1 fluorocarbon leader is today’s standard. Set the drag light because ester snaps on sudden shocks.

Choosing jighead weight

Weight	When
0.6–1 g	Light wind, aji shallow — the basic weight
1–1.5 g	Some wind, searching mid-depths
2 g+	Strong wind, fast current, deep fish

Start with 1 g. Go lighter if the aji are high, heavier to get down if nothing bites.

Where and when

Where: pier lights, specifically the line between light and shadow. Aji often wait on the dark side for food drifting into the light.

Time	Notes
Dusk	Aji activity rises around sunset — the best chance
Night (lights)	Aji around the lights — the main winter window
Dawn	Also good, but very cold

Sunset is early in winter, so even an hour or two from around 5 pm gives you a real chance — even better if it coincides with tide movement.

Basic technique

Cast and count down — “1, 2, 3…” to find the depth (range) where aji are.
Slow retrieve or light twitches — reel slowly, or lift the rod lightly and stop.
Watch for bites on the fall — they often come as a tiny “tick” while the jig drops.

Ajing bites are tiny — a tick, or the line suddenly going light. Set the hook with a quick flick of the wrist as soon as you feel anything. Once you catch one, repeat the same count and retrieve speed: aji travel in schools.

When they will not bite

Change depth — count longer or shorter.
Go lighter — a slower fall can draw more bites.
Change worm colour — clear vs glow.
Move to another light — each one holds fish differently.
Wait for the tide to start moving.

Staying warm and safe

Piers get much colder at night than you expect. Bring a warm jacket, gloves, a neck warmer and hand warmers; fingerless gloves help you feel the line. Footing is hard to see at night, so always use a headlamp and life jacket, stay out of restricted areas, and do not shine your light on the water when others are fishing nearby.

Minagiman’s take

Winter makes surf and rock fishing tough, so short sessions on a nearby pier are a great way to keep fishing — and aji are delicious. The entry barrier is low, but one gram of jighead or one second of count can change everything. Find the depth they are at, then repeat the same thing. Sashimi, namero (chopped with miso) or aji fry after a cold night session is hard to beat.