Reef
both
Level 5/10

Sandy Bay

Llantwit Major, UK
🪨Rocks🌀Strong rips

Sandy Bay at Llantwit Major is a Welsh bodyboard and surf wedge that wakes up when Bristol Channel energy meets the right tide and bank shape. The wave is fickle, short and powerful, with local knowledge making a big difference. Treat the pin and conditions as a starting point and check the tide carefully before committing.

Sandy Bay surf forecast

Model forecast for swell, wind and tide.

10-Day Forecast
Today23
39
Poor
1.1m@14s
15km/h
Thu24
13
Poor
0.6m@11s
13km/h
Fri25
53
Fair
1.0m@15s
11km/h
Sat26
18
Poor
1.2m@3s
16km/h
Sun27
11
Poor
1.1m@8s
20km/h
Mon28
43
Poor
1.1m@11s
9km/h
Tue29
0
Poor
0.6m@10s
24km/h
Wed30
29
Poor
1.1m@13s
18km/h
Thu1
46
Fair
2.3m@14s
13km/h
Fri2
22
Poor
0.5m@9s
5km/h
5+ days out, less certain

Today's Conditions

Find Flights
Best session: MorningAM 8 km/h · PM 14 km/h · Tide at 10am (2.3m)
Swell
1.1m
W(266°)
Score: 14/25
Period
14s
Long period groundswell
Score: 24/25
Wind
15km/h
NW(306°)
Score: 1/25
Weather
17°C
0.2mm81%
First light 6:31amSunrise 7:01amSunset 7:10pmLast light 7:40pm
Windswell0.4m@2sSecondary0.2mConfidence
100%

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
Showing forecast for today

Hourly Forecast, Tide & Strike Windows

Strike window: 6:31–8:27am · droppingStrike window: 12:21–3:24pm · risingStrike window: 6:15–7:40pm · droppingIdeal tide: mid
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
°C
16°
16°
17°
19°
17°
11°
14°
17°
20°
20°
12°
15°
17°
17°
15°
10°
14°
17°
18°
17°
14°
15°
18°
19°
17°
12°
13°
16°
16°
15°
12°
14°
18°
19°
19°
14°
15°
18°
19°
18°
16°
17°
19°
19°
17°
15°
15°
16°
16°
16°
3m1.5
sec
14s
14s
14s
14s
14s
11s
11s
11s
11s
10s
16s
15s
15s
15s
15s
14s
3s
3s
3s
3s
8s
8s
8s
8s
8s
11s
11s
11s
11s
11s
10s
10s
10s
10s
10s
13s
13s
13s
13s
13s
14s
14s
14s
14s
14s
9s
9s
9s
9s
9s
swell
windkm/h
6g9
10g17
20g33
17g28
10g17
18g30
17g29
14g24
7g12
9g15
5g8
7g13
16g28
17g30
11g21
7g9
12g21
18g34
21g39
17g30
19g30
22g37
22g40
21g38
15g28
7g11
8g15
9g19
9g18
9g14
30g47
23g52
23g55
25g54
22g50
11g24
14g26
20g36
22g43
22g46
16g32
16g30
15g32
11g32
7g32
5g45
6g35
4g17
4g11
5g14
tidem
4:25am7.1m
10:16am2.3m
4:49pm7.7m
5:13am7.8m
11:10am1.8m
5:31pm8.5m
5:54am8.5m
12:00pm1.1m
6:11pm9.1m
6:30am9.3m
12:39pm0.5m
6:49pm9.7m
1:01am0.3m
7:07am9.8m
1:18pm0.2m
7:24pm10.1m
1:39am0.0m
7:43am10.0m
1:55pm0.1m
7:59pm10.2m
2:14am0.1m
8:17am10.1m
2:32pm0.4m
8:35pm9.9m
2:52am0.4m
8:54am9.6m
3:06pm0.7m
9:13pm9.6m
3:30am1.1m
9:34am9.3m
3:53pm1.1m
9:55pm8.9m
Ideal tide (from tide preference)Strike windowNight

Tide times today

4:25 am
High tide - 7.12m
10:16 am
Low tide - 2.32m
4:49 pm
High tide - 7.67m
Times shown in spot-local time.

Strike Score Breakdown

39
Poor
Components
Swell Direction9/25
Swell Size14/25
Swell Period24/25
Wind1/25
Raw Score48/100
Adjustments
💨 Gusty Wind-4
⚠️ Weak Component-5
Adjusted Score39/100
Confidence
Multiplier×1.00
Final Score39

Plan Your Strike

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Swell Requirements

Optimal direction
SW (235°)
Direction range
210° - 260°
Size range
0.9m - 2.4m
Ideal size
1.6m - 2m
Height multiplier
0.97×
Ideal period
14s+

Wind Requirements

Optimal direction
NNE (20°)
Offshore range
0° - 45°

Tide Requirements

Optimal tide
mid

Water temp

13°C

Wetsuit

4/3mm fullsuit

Bottom

Mixed

Difficulty

5/10

Crowd level

3/10

Frequently Asked Questions

What tide is best at Sandy Bay?

The Sandy Bay profile favors mid tide. Compare this preference with the forecast tide and local conditions before choosing a session.

What wind direction is offshore at Sandy Bay?

The Sandy Bay profile uses wind from NNE (20°) as its preferred direction, with an offshore range of 0° to 45°. Wind speed matters too: light winds outside that range can still produce surfable conditions, while strong offshore winds can make takeoffs difficult.

What swell size and direction work best at Sandy Bay?

The Sandy Bay scoring profile favors swell from SW (210° to 260°), a swell-height range of 0.9m to 2.4m, and a reference period of 14s. These are model inputs, not guaranteed breaking-wave heights or a promise that the surf will suit every ability.

When is the best time of year to surf Sandy Bay?

The main season at Sandy Bay is Sep, Oct, Nov, Dec, Jan, Feb, Mar.

How do I get to Sandy Bay?

The spot profile lists CWL as a nearby airport. The estimated road transfer is 30 minutes.

What kind of wave is Sandy Bay?

Sandy Bay is a reef break, a peak with lefts and rights over a mixed bottom. Difficulty is rated 5/10.

Best Season

Peak: Sep, Oct, Nov, Dec, Jan, Feb, Mar

Getting There

Airport
CWL
Drive time
30 min
Data quality
community

Strike Log

Community Discussion