Knab Rock (Swansea Bay)

Mumbles, Swansea · offshore W

Now

Knab Rock (Swansea Bay) is a foil launch, not a surf break. Switch to Foil for its forecast.

21–35kn★★★★★

gusty

Wing 4 m² · 75 kg rider

Water 18°C · Air 18°C

Next 48 h surf, ftwind, knots · mean and gust

Best foil Today 11:00–14:00 · 20–21 kn onshore

Customise these conditions ›

Arrows: swell directionArrows: wind direction · faint bar: gusts

Swell breakdown

Primary	2ft	8s	WSW
Secondary	–
Wind waves	3ft	4s	ESE

Swell3ft · 5s · SE Wind24mph · ESE onshore · gusts 41

Tide · Mumbles

Wednesday 30Thursday 1Friday 2Saturday 3Sunday 4Monday 5 14:31 0.9m20:50 9.7m02:50 1.1m09:09 9.4m15:06 1.2m21:27 9.3m03:25 1.4m09:47 9.0m15:45 1.6m22:08 8.8m04:03 2.0m10:31 8.5m16:30 2.2m22:56 8.1m04:50 2.7m11:27 7.9m17:32 2.9m00:01 7.4m06:04 3.4m12:50 7.4m19:12 3.3m01:37 7.1m08:07 3.6m14:29 7.4m20:59 3.1m

Cams nearby

Porthcawl Surf SchoolPorthcawl Surf School · Rest Bay · 20 km

Missing one? Suggest it

	Surf ft		Swell ft	Wind mph
Tuesday 29 L 02:17H 08:33L 14:31H 20:50 Sunrise 07:13 · Sunset 18:58
09	Flat	–	2 4s	20 33	17–29 kn	★★★	Flatft	gusty
12	0-1	–	4 5s	23 39	20–34 kn	★★★★★	0-1ft	gusty
15	0-1	–	3 4s	18 30	16–26 kn	★★★	0-1ft	gusty
18	0-1	–	3 4s	20 34	18–29 kn	★★★	0-1ft	gusty
Wednesday 30 L 02:50H 09:09L 15:06H 21:27 Sunrise 07:14 · Sunset 18:56
06	Flat	–	4 10s	10 16	9–14 kn	–	Flatft	light
09	Flat	–	3 11s	14 22	12–19 kn	★	Flatft	cross
12	Flat	–	3 11s	14 22	12–19 kn	★	Flatft	cross
15	Flat	–	4 10s	17 27	15–24 kn	★★	Flatft	gusty
18	Flat	–	4 10s	12 20	11–17 kn	★	Flatft	offshore ⚠
Thursday 1 L 03:25H 09:47L 15:45H 22:08 Sunrise 07:16 · Sunset 18:53
06	Flat	–	3 11s	4 6	3–5 kn	–	Flatft	light
09	Flat	–	3 11s	6 10	5–9 kn	–	Flatft	offshore ⚠
12	Flat	–	3 11s	8 16	7–14 kn	–	Flatft	offshore ⚠
15	Flat	–	3 11s	10 21	9–19 kn	–	Flatft	offshore ⚠
18	Flat	–	3 11s	9 16	7–14 kn	–	Flatft	offshore ⚠
Friday 2 L 04:03H 10:31L 16:30H 22:56 Sunrise 07:18 · Sunset 18:51
06	Flat	–	3 8s	10 18	9–16 kn	–	Flatft	light
09	Flat	–	3 9s	11 20	9–17 kn	–	Flatft	light
12	Flat	–	3 9s	11 20	9–17 kn	–	Flatft	light
15	Flat	–	3 9s	11 21	10–19 kn	–	Flatft	offshore ⚠
18	Flat	–	3 8s	9 17	8–15 kn	–	Flatft	offshore ⚠
Saturday 3 L 04:50H 11:27L 17:32 Sunrise 07:19 · Sunset 18:49
06	Flat	–	2 9s	4 7	4–6 kn	–	Flatft	light
09	Flat	–	2 9s	5 10	5–9 kn	–	Flatft	light
12	Flat	–	2 9s	9 16	7–14 kn	–	Flatft	light
15	Flat	–	2 9s	10 19	8–17 kn	–	Flatft	offshore ⚠
18	Flat	–	1 9s	8 16	7–14 kn	–	Flatft	offshore ⚠
Sunday 4 H 00:01L 06:04H 12:50L 19:12 Sunrise 07:21 · Sunset 18:46
06	Flat	–	1 8s	9 17	7–14 kn	–	Flatft	offshore ⚠
09	Flat	–	1 8s	9 18	8–16 kn	–	Flatft	offshore ⚠
12	Flat	–	1 8s	11 23	10–20 kn	–	Flatft	offshore ⚠
15	Flat	–	1 8s	11 22	10–19 kn	–	Flatft	offshore ⚠
18	Flat	–	1 7s	9 17	7–15 kn	–	Flatft	offshore ⚠
Monday 5 H 01:37L 08:07H 14:29L 20:59 Sunrise 07:23 · Sunset 18:44
06	Flat	–	1 6s	4 7	3–6 kn	–	Flatft	light
09	Flat	–	1 6s	5 9	4–8 kn	–	Flatft	offshore ⚠
12	Flat	–	1 5s	6 13	5–11 kn	–	Flatft	offshore ⚠
15	Flat	–	1 5s	7 14	6–12 kn	–	Flatft	offshore ⚠
18	Flat	–	1 5s	7 14	6–12 kn	–	Flatft	offshore ⚠

Surf ft

Swell ft

Wind mph

Tuesday 29 L 02:17H 08:33L 14:31H 20:50 Sunrise 07:13 · Sunset 18:58

Flat

–

2 4s

20 33

17–29 kn

★★★

Flatft

gusty

0-1

–

4 5s

23 39

20–34 kn

★★★★★

0-1ft

gusty

0-1

–

3 4s

18 30

16–26 kn

★★★

0-1ft

gusty

0-1

–

3 4s

20 34

18–29 kn

★★★

0-1ft

gusty

Wednesday 30 L 02:50H 09:09L 15:06H 21:27 Sunrise 07:14 · Sunset 18:56

Flat

–

4 10s

10 16

9–14 kn

–

Flatft

light

Flat

–

3 11s

14 22

12–19 kn

★

Flatft

cross

Flat

–

3 11s

14 22

12–19 kn

★

Flatft

cross

Flat

–

4 10s

17 27

15–24 kn

★★

Flatft

gusty

Flat

–

4 10s

12 20

11–17 kn

★

Flatft

offshore ⚠

Thursday 1 L 03:25H 09:47L 15:45H 22:08 Sunrise 07:16 · Sunset 18:53

Flat

–

3 11s

4 6

3–5 kn

–

Flatft

light

Flat

–

3 11s

6 10

5–9 kn

–

Flatft

offshore ⚠

Flat

–

3 11s

8 16

7–14 kn

–

Flatft

offshore ⚠

Flat

–

3 11s

10 21

9–19 kn

–

Flatft

offshore ⚠

Flat

–

3 11s

9 16

7–14 kn

–

Flatft

offshore ⚠

Friday 2 L 04:03H 10:31L 16:30H 22:56 Sunrise 07:18 · Sunset 18:51

Flat

–

3 8s

10 18

9–16 kn

–

Flatft

light

Flat

–

3 9s

11 20

9–17 kn

–

Flatft

light

Flat

–

3 9s

11 20

9–17 kn

–

Flatft

light

Flat

–

3 9s

11 21

10–19 kn

–

Flatft

offshore ⚠

Flat

–

3 8s

9 17

8–15 kn

–

Flatft

offshore ⚠

Saturday 3 L 04:50H 11:27L 17:32 Sunrise 07:19 · Sunset 18:49

Flat

–

2 9s

4 7

4–6 kn

–

Flatft

light

Flat

–

2 9s

5 10

5–9 kn

–

Flatft

light

Flat

–

2 9s

9 16

7–14 kn

–

Flatft

light

Flat

–

2 9s

10 19

8–17 kn

–

Flatft

offshore ⚠

Flat

–

1 9s

8 16

7–14 kn

–

Flatft

offshore ⚠

Sunday 4 H 00:01L 06:04H 12:50L 19:12 Sunrise 07:21 · Sunset 18:46

Flat

–

1 8s

9 17

7–14 kn

–

Flatft

offshore ⚠

Flat

–

1 8s

9 18

8–16 kn

–

Flatft

offshore ⚠

Flat

–

1 8s

11 23

10–20 kn

–

Flatft

offshore ⚠

Flat

–

1 8s

11 22

10–19 kn

–

Flatft

offshore ⚠

Flat

–

1 7s

9 17

7–15 kn

–

Flatft

offshore ⚠

Monday 5 H 01:37L 08:07H 14:29L 20:59 Sunrise 07:23 · Sunset 18:44

Flat

–

1 6s

4 7

3–6 kn

–

Flatft

light

Flat

–

1 6s

5 9

4–8 kn

–

Flatft

offshore ⚠

Flat

–

1 5s

6 13

5–11 kn

–

Flatft

offshore ⚠

Flat

–

1 5s

7 14

6–12 kn

–

Flatft

offshore ⚠

Flat

–

1 5s

7 14

6–12 kn

–

Flatft

offshore ⚠