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Iwanai Surf Forecast

6am Sun 21 Sep
5ft NNE 32kt NNE
(1.5x Overhead)
6ft North-east facing beaches
(2x Overhead)
3.4m @ 7s NNE (14°)
12pm Sun 21 Sep
4ft NNE 21kt N
(Overhead)
3-5ft North-east facing beaches
(Well Overhead)
2.7m @ 7.3s NNE (13°)
6pm Sun 21 Sep
2-3ft N 17kt N
(Shoulder-Head High)
3ft North-east facing beaches
(Head High)
1.8m @ 7s N (8°)
6am Mon 22 Sep
1ft+ N 7kt NW
(Knee-Waist High)
0.9m @ 5.3s N (359°)
12pm Mon 22 Sep
1ft N 11kt W
(Knee High)
0.6m @ 5.1s N (353°)
6pm Mon 22 Sep
1ft NNW 8kt WNW
(Knee High)
0.6m @ 4.7s NNW (332°)
6am Tue 23 Sep
0.5ft NNW 1kt SE
(Ankle High)
0.3m @ 4s NNW (338°)
12pm Tue 23 Sep
0.5ft N 2kt SSW
(Ankle High)
0.2m @ 4.2s N (351°)
6pm Tue 23 Sep
0.5ft WNW 0kt ENE
(Ankle High)
0.2m @ 3.8s WNW (287°)

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Sun 6am
Sun 12pm
Sun 6pm
Mon 6am
Mon 12pm
Mon 6pm
Tue 6am
Tue 12pm
Tue 6pm
Wave Height & Swell Direction
Swell Train Data
Wind Speed & Direction
A
NNE 32kt
A
N 21kt
A
N 17kt
A
NW 7kt
A
W 11kt
A
WNW 8kt
A
SE 1kt
A
SSW 2kt
A
ENE 0kt
Tide Times & Weather
Rain 13°C // 16°C
Showers easing 11°C // 20°C
Mostly cloudy 11°C // 21°C

Surf Forecast Swell Train Analysis

Date
Surf
Wind
Primary Swell
Secondary Swell
Tertiary Swell
-
Sun 21/09
12am
2-3ft
3-4ft
NF
NNE 34kt
2.3 m
5.3s 24 (NNE)
0.2 m
4.2s 252 (WSW)
0.2 m
7s 138 (SE)
6am
5ft
6ft
NF
NNE 32kt
3.4 m
7s 14 (NNE)
12pm
4ft
3-5ft
NF
N 21kt
2.7 m
7.3s 13 (NNE)
6pm
2-3ft
3ft
NF
N 17kt
1.8 m
7s 8 (N)
+
Sun 21/09
4ft
3-5ft
NF
N 21kt
2.7 m
7.3s 13 (NNE)
-
Mon 22/09
12am
2ft
N 11kt
1.3 m
6.1s 5 (N)
6am
1ft+
NW 7kt
0.9 m
5.3s 359 (N)
12pm
1ft
W 11kt
0.6 m
5.1s 353 (N)
6pm
1ft
WNW 8kt
0.6 m
4.7s 332 (NNW)
+
Mon 22/09
1ft
W 11kt
0.6 m
5.1s 353 (N)
-
Tue 23/09
12am
1ft
WSW 6kt
0.4 m
4.1s 337 (NNW)
6am
0.5ft
SE 1kt
0.3 m
4s 338 (NNW)
12pm
0.5ft
SSW 2kt
0.2 m
4.2s 351 (N)
6pm
0.5ft
ENE 0kt
0.2 m
3.8s 287 (WNW)
+
Tue 23/09
0.5ft
SSW 2kt
0.2 m
4.2s 351 (N)
  • bulletin_datetime_utc => 2025-09-20 06:00:00
  • location_identifier => 283
  • timezone => Asia/Tokyo