Grande Trait Surf Forecast

/ Loire Atlantique (9 surf breaks) /

France (410 surf breaks)

Surf Forecasts:

Grande Trait surfForecast / Loire Atlantique / France

48hr Weather and Surf, issued 1 pm Tuesday 14 Oct 2025 CEST

Forecast update in hr min s Forecast update imminent

Grande Trait surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Grande Trait sea temperature is 16.9° C
(Which is slightly warmer than usual)

How big are the waves at Grande Trait today?

The current surf forecast for Grande Trait at 4PM is: 0.3m 14s primary swell from a West-southwest direction and 0.2m 8s secondary swell from a West direction (forecast issued at 01:00pm October 14). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (CEST) & Date	Wave Height	Wave Period
Morning (14 Oct)	0.5ft (0.2m)	9s
Afternoon (14 Oct)	0.5ft (0.2m)	15s
Evening (14 Oct)	1.5ft (0.4m)	14s

Table - waves today at Grande Trait. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Tuesday 14					Wednesday 15								Thursday 16								Friday 17
	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM
Rating (10 max)	0	0	0	1	1	0	1	1	0	0	0	0	0	0	1	1	0	0	0	1	1	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	W	WSW	WSW	WSW	W	W	W	W	W	W	WSW	WSW	WSW	W	WSW	WSW	WSW	W	W	W	WSW	W	W	W
Period(s) (?)	12	15	14	14	13	13	13	12	12	12	11	11	11	11	14	14	13	13	12	12	12	11	11	11
Wave Graph (?)
kJ (?)	11	22	41	63	90	85	81	73	71	67	40	39	38	20	40	62	57	85	73	72	46	21	20	9
Wind (km/h)	ENE	ENE	ENE	NE	NE	NE	NE	NE	ENE	ENE	ENE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	cross- off	off	off	off	off	off	off	off	off	off	off	off	off	off	off	off	cross- off	cross- off	off	off	off	cross- off	off
High Tide / height (m)	10:54AM 3.44					12:54AM 3.15				1:28PM 3.45					2:24AM 3.35				2:40PM 3.69				3:16AM 3.61
Low Tide / height (m)				5:56PM 1.20				6:26AM 1.41				7:17PM 1.19				7:44AM 1.29					8:27PM 1.00

	Tuesday 14					Wednesday 15								Thursday 16								Friday 17
Sunrise	-	-	-	-	-	-	-	-	8:26	-	-	-	-	-	-	-	8:27	-	-	-	-	-	-	-
Sunset	-	-	7:23	-	-	-	-	-	-	-	7:22	-	-	-	-	-	-	-	7:20	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	13	18	21	20	17	12	11	10	12	17	19	19	16	13	12	11	12	17	20	19	16	13	11	10
Feels °C (?)	7	12	16	15	12	7	6	5	6	12	14	15	11	8	7	6	6	11	14	14	11	7	6	4

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 Loire Atlantique

Wind Update The wind is still cross-off at Grande Trait (fresh winds from the ENE at Saint Nazaire/Montoir Airport 14 km from Grande Trait). 0.2m 8s swell from the W with a 0.2m 15s groundswell, also from the W and a 0.2m 12s groundswell, also from the W. 3 swells combining to make bigger set waves.
1 hour 35 minutes ago Grande Trait

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1 h 35 min ago

35 km/h

ENE

Cross-Off

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