Grishipoll Bay (Coll) Surf Forecast

/ Scot – Inner Hebrides (18 surf breaks) /

UK (471 surf breaks) / Lat Long: (56.65° N 6.57° W)

Surf Forecasts:

Grishipoll Bay (Coll) surfForecast / Scot – Inner Hebrides / UK

12 Day Weather and Surf, issued 6 am Saturday 23 Aug 2025 BST

Forecast update in hr min s Forecast update imminent

Grishipoll Bay (Coll) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Grishipoll Bay (Coll) sea temperature is 16.0° C
(Which is 1.7°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Grishipoll Bay (Coll) this week:

The surf forecast for Grishipoll Bay (Coll) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 23) at 1PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.1m and 19s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Grishipoll Bay (Coll) in the next 12 days are 4.0m 18s and forecast to arrive on Tuesday (Aug 26) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Aug 25) at 4PM.

Wave Type	Time (BST) & Date	Wave Height & Period
Next good surf (1 star+)	1PM (Sat 23rd Aug)	2ft (0.6m) 9s
Best Surf	1AM (Tue 26th Aug)	10ft (3.0m) 19s
Most Powerful	7AM (Tue 26th Aug)	13ft (4.0m) 18s

Table - best surf conditions forecast for Grishipoll Bay (Coll) over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Moderate rain (total 14mm), heaviest on Sat night. Very mild (max 19°C on Sun afternoon, min 14°C on Sat morning). Winds increasing (light winds from the SSE on Sat afternoon, strong winds from the SE by Mon afternoon).									Days 3-6 Weather Summary Heavy rain (total 41mm), heaviest during Wed night. Very mild (max 15°C on Tue afternoon, min 12°C on Wed afternoon). Winds decreasing (strong winds from the SSW on Tue morning, light winds from the ENE by Wed afternoon).
	Saturday 23			Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28			Friday 29
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	1	0	0	1	0	0	0	0	!	!	!	!	3	4	3	2	1	2	1	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	WSW	WSW	WSW	WSW	WSW	W	W	WSW	WSW	W	W	W	WSW
Period(s) (?)	9	9	8	8	8	9	9	23	19	17	16	14	13	13	13	13	12	11	10	10	9
Wave Graph (?)
Energy (?)	73	71	50	60	92	194	131	171	6636	11748	9441	5066	2740	1657	1806	2111	1702	894	402	273	457
Wind (km/h)	SSE	SSE	S	SE	S	SE	SE	SSE	SSE	S	SSW	S	SSE	ENE	S	SW	SW	SE	NNW	W	S
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	cross- off	cross- off	off	cross- off	off	off	off	cross- off	cross- off	cross- off	cross- off	off	cross- off	cross- off	cross	cross	off	on	cross- on	cross- off
High Tide / height (m)			7:21PM 3.98	7:36AM 3.69		7:53PM 4.03	8:06AM 3.72		8:23PM 3.99	8:35AM 3.68		8:52PM 3.86	9:03AM 3.59		9:20PM 3.66	9:32AM 3.43		9:48PM 3.41	10:01AM 3.23		10:17PM 3.13
Low Tide / height (m)		1:12PM 0.17	1:39AM 0.16		1:47PM 0.08	2:13AM 0.14		2:20PM 0.08	2:44AM 0.20		2:52PM 0.17	3:14AM 0.33		3:23PM 0.34	3:43AM 0.52		3:54PM 0.57		4:12AM 0.75	4:26PM 0.84

	Saturday 23			Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28			Friday 29
Sunrise	6:09	-	-	6:11	-	-	6:13	-	-	6:15	-	-	6:16	-	-	6:18	-	-	6:20	-	-
Sunset	-	8:46	-	-	8:44	-	-	8:40	-	-	8:38	-	-	8:36	-	-	8:34	-	-	8:30	-

Rain (mm)	1	-	7	-	-	-	-	-	6	2	2	4	-	12	11	6	1	3	7	-	8
Temp. °C	15	17	16	17	19	18	17	18	16	14	15	14	14	13	14	14	14	14	13	14	14
Feels °C (?)	12	15	13	14	17	15	9	10	9	6	8	8	8	10	11	10	8	9	12	10	9

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Scot - Inner Hebrides

Wind Update The wind is still offshore at Grishipoll Bay (Coll) (moderate winds from the ESE at Tiree Island Airport 25 km from Grishipoll Bay (Coll)). 0.5m 10s swell from the WSW to make surfable waves.
2 hours 31 minutes ago Grishipoll Bay (Coll)

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25 km away, 2 h 31 min ago

22 km/h

ESE

0.0

16.0

Air / Water (°C)

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grishipoll Bay (Coll) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Information about the Grishipoll Bay (Coll) Surf forecast

The above surf forecast table for Grishipoll Bay (Coll) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Grishipoll Bay (Coll) can be found by selecting the local surf guide option on the grey menu. Our Grishipoll Bay (Coll) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Grishipoll Bay (Coll)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Grishipoll Bay (Coll) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Inner Hebrides? If you are looking for accommodation near Grishipoll Bay (Coll), camping, hotels and holiday cottages in Inner Hebrides, consider staying in Tiree which is 26 km (16 miles) away. Other places in and around Inner Hebrides where you can find information about places to rent, and car hire include Lochaline which is 50 km (31 miles) away, Mallaig, Oban and Portree.