Slab
left
Level 10/10

Gills Bay Slab

Caithness, UK
🪸Sharp reef🪨Rocks😮‍💨Hold-downs⚠️Shallow🌀Strong rips🏝️Remote

Gills Bay Slab is one of Europe's heaviest waves--a monstrous left-hand slab that only comes alive during the most violent winter storms.

Gills Bay Slab surf forecast

Model forecast for swell, wind and tide.

10-Day Forecast
Today8
3
Poor
0.6m@6s
5km/h
Mon9
5
Poor
0.5m@6s
4km/h
Tue10
0
Poor
0.3m@6s
11km/h
Wed11
0
Poor
0.2m@6s
24km/h
Thu12
0
Poor
0.8m@10s
33km/h
Fri13
0
Poor
0.4m@9s
36km/h
Sat14
0
Poor
0.6m@8s
31km/h
Sun15
0
Poor
0.4m@8s
15km/h
Mon16
6
Poor
0.9m@13s
19km/h
Tue17
0
Poor
0.2m@12s
35km/h
Choppy 5+ days out, less certain

Today's Conditions

Find Flights
Best session: MorningAM 8 km/h · PM 6 km/h · High tide at 8am (2.9m)
Swell
0.6m
ESE(123°)
Score: 0/25
Period
6s
Short period
Score: 0/25
Wind
5km/h
S(176°)
Score: 23/25
Weather
8°C
0.0mm92%
First light 7:15amSunrise 7:45amSunset 4:05pmLast light 4:35pm
Windswell
—
Secondary
0.1m
Confidence
100%

Location & Conditions

Loading map...
Swell0.6m @6s ESE outside window
Wind5 km/h S glassy
SwellWind: Offshore Cross Onshore
Showing forecast for today · all day

Hourly Forecast, Tide & Strike Windows

Strike window: 7:15–11:59am · through highStrike window: 4:00–4:35pm · risingIdeal tide: mid to high
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
8°
8°
10°
9°
4°
5°
7°
9°
8°
5°
9°
9°
9°
10°
9°
8°
8°
8°
9°
7°
6°
6°
7°
7°
6°
7°
8°
8°
8°
8°
7°
8°
8°
7°
6°
5°
6°
7°
7°
7°
5°
5°
5°
5°
5°
6°
6°
7°
7°
8°
2m1.0
sec
6s
6s
6s
6s
6s
5s
5s
5s
5s
11s
6s
6s
6s
6s
10s
6s
6s
6s
6s
6s
10s
10s
10s
10s
10s
9s
9s
9s
9s
9s
8s
8s
8s
8s
8s
8s
8s
8s
8s
8s
13s
13s
13s
13s
13s
12s
12s
12s
12s
12s
swell
windkm/h
8g13
8g14
3g6
6g10
7g10
4g7
2g5
4g8
6g10
7g10
12g16
10g14
12g17
10g14
10g14
16g20
25g32
21g28
25g33
34g44
34g47
31g41
34g45
32g45
32g43
21g30
32g43
39g51
42g55
43g55
40g52
37g48
33g52
27g56
20g55
6g23
9g25
16g29
20g36
24g44
17g55
16g44
18g34
21g35
22g38
21g36
32g51
41g68
39g80
37g87
tidem
1:40am0.0m
8:12am2.9m
1:58pm0.2m
8:15pm2.9m
2:17am0.1m
8:35am3.0m
2:36pm0.2m
8:46pm3.0m
2:53am0.3m
9:02am3.1m
3:11pm0.3m
9:22pm3.1m
3:27am0.5m
9:32am3.2m
3:49pm0.5m
9:50pm3.0m
4:04am0.5m
10:05am2.9m
4:23pm0.4m
10:30pm2.7m
4:33am0.6m
10:42am2.9m
5:02pm0.6m
5:12am0.9m
11:19am2.9m
5:45pm0.9m
5:50am1.3m
12:00pm3.0m
6:41pm1.3m
12:35am2.7m
6:48am1.7m
12:46pm3.0m
7:55pm1.5m
Ideal tide (from tide preference)Strike windowNight

Tide times today

1:40 am
Low · 0.00m
8:12 am
High · 2.87m
1:58 pm
Low · 0.22m
8:15 pm
High · 2.94m
Times shown in spot-local time.

Strike Score Breakdown

3
Poor
Components
Swell Direction0/25
Swell Size0/25
Swell Period0/25
Wind23/25
Raw Score23/100
Adjustments
⚠️ Weak Component-10
📉 Undersized Swell-12
⚖️ Penalty Stack Cap+2
🚫 Undersized Capmax 15
Adjusted Score3/100
Confidence
Multiplier×1.00
Final Score3

Plan Your Strike

Return flights to WIC, departing today with a 5-day trip window.

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Swell Requirements

Optimal direction
NNE (15°)
Direction range
340° - 60°
Size range
2.5m - 5m
Ideal size
3.6m - 4.4m
Height multiplier
1.08×
Ideal period
16s+

Wind Requirements

Optimal direction
SW (225°)
Offshore range
190° - 260°

Tide Requirements

Optimal tide
mid to high

Water temp

9°C

Wetsuit

6/5mm + boots, gloves, hood

Difficulty

10/10

Crowd level

1/10

Frequently Asked Questions

What kind of wave is Gills Bay Slab?

Gills Bay Slab is a slab in Caithness, UK, that mostly breaks left.

What swell works best at Gills Bay Slab?

Gills Bay Slab picks up swell from the NNW round to the ENE, and it's best when it's coming straight out of the NNE. It starts working at around 2.5m and handles up to about 5m, with the sweet spot around 3.6 to 4.4m. Period matters too: aim for 16s or longer, as anything under 12s tends to be weak. These are the numbers our scoring uses, so treat them as a guide rather than a promise.

What wind is offshore at Gills Bay Slab?

A SW wind is dead offshore at Gills Bay Slab, and anything from the S round to the W keeps it clean. Light winds from other directions can still be fine; strong offshores can make it hard to get into waves.

What tide is best at Gills Bay Slab?

Gills Bay Slab is at its best around the mid to high tide.

When is the best time of year to surf Gills Bay Slab?

The most reliable run of swell at Gills Bay Slab comes Nov to Feb. There's a second window in Mar and Oct too.

How cold is the water at Gills Bay Slab?

The water at Gills Bay Slab averages around 9°C, so you'll want a 6/5mm with boots, gloves and a hood. It shifts a few degrees through the year, so check the season before you pack.

Is Gills Bay Slab good for beginners?

No. As a slab, it's strictly for experienced surfers. The lineup is usually quiet (crowd 1/10). Monster slab. Expert only. One of Europe's heaviest waves. Water temps can drop to 7C.

How do I get to Gills Bay Slab?

The nearest airport on our list is WIC, then it's roughly a 25-minute drive.

What other surf spots are near Gills Bay Slab?

The closest breaks we track are Dunnet Bay (15 km), Murkle (21 km) and Thurso East (23 km), handy when Gills Bay Slab isn't working. We track 8 spots around Caithness in total. Fun fact: it's the third most northerly break we track in UK.

Best Season

Peak: Nov, Dec, Jan, Feb

Secondary: Oct, Mar

Getting There

Airport
WIC
Drive time
25 min
Data quality
verified

Plan a trip around Gills Bay Slab

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Strike Log

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