Las Machas Surf Forecast

/ Atacama (12 surf breaks) /

Chile (102 surf breaks) / Lat Long: (18.40° S 70.33° W)

Surf Forecasts:

Las Machas surfForecast / Atacama / Chile

12 Day Weather and Surf, issued 8 pm Saturday 18 Oct 2025 -04

Forecast update in hr min s Forecast update imminent

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

Today's Las Machas sea temperature is 16.7° C
(Which is 2.0°C colder than average for this time of year)

Best Forecast Surf Conditions for Las Machas this week:

The surf forecast for Las Machas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 19) at 3AM. The primary swell is predicted to be 1.6m and 12s period with a secondary swell of 0.1m and 21s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Las Machas in the next 12 days are 1.9m 15s and forecast to arrive on Saturday (Oct 25) at 9PM. Winds are predicted to be glassy at the time the swell arrives.

Wave Type	Time (-04) & Date	Wave Height & Period
Next good surf (1 star+)	3AM (Sun 19th Oct)	5ft (1.6m) 12s
Best Surf	9PM (Sat 25th Oct)	6ft (1.9m) 15s
Most Powerful	9PM (Sat 25th Oct)	6ft (1.9m) 15s

Table - best surf conditions forecast for Las Machas over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Mostly dry. Warm (max 20°C on Sun morning, min 15°C on Mon night). Wind will be generally light.										Days 3-6 Weather Summary Mostly dry. Warm (max 20°C on Wed afternoon, min 16°C on Tue night). Wind will be generally light.
		Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Sat 25
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	3	3	1	3	3	0	2	2	0	2	2	1	3	3	1	3	3	1	3	2	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW
Period(s) (?)	12	12	12	12	11	11	11	11	10	10	17	17	16	14	14	13	13	12	12	11	16
Wave Graph (?)
kJ (?)	784	734	734	595	475	372	311	234	182	125	202	510	641	515	561	451	444	563	554	393	1356
Wind (km/h)	W	SSW	SW	W	SSW	SW	W	WSW	SW	SW	WSW	SW	SSW	SW	SW	SSE	S	SW	SSW	SSW	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	glass	glass	on	glass	glass	on	glass	glass	on	glass	glass	on	glass	glass	on	glass	glass	on	glass	cross- on	on
High Tide / height (m)		8:43AM 1.06		9:19PM 1.06	9:21AM 1.01		9:52PM 1.12	9:56AM 0.96		10:23PM 1.16	10:28AM 0.90		10:54PM 1.18	11:00AM 0.83		11:25PM 1.18	11:32AM 0.78		11:58PM 1.16		12:06PM 0.72
Low Tide / height (m)	2:37AM 0.29		3:02PM 0.18		3:23AM 0.27	3:29PM 0.18		4:05AM 0.26	3:55PM 0.20		4:45AM 0.26	4:20PM 0.22		5:24AM 0.28	4:44PM 0.25		6:03AM 0.31	5:09PM 0.28		6:45AM 0.34	5:36PM 0.32

		Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23			Friday 24			Sat 25
Sunrise	-	7:09	-	-	7:07	-	-	7:07	-	-	7:07	-	-	7:05	-	-	7:05	-	-	7:05	-
Sunset	-	-	7:43	-	-	7:43	-	-	7:44	-	-	7:44	-	-	7:44	-	-	7:45	-	-	7:45

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	16	20	19	16	19	19	17	18	19	16	19	20	17	19	20	17	19	19	17	19	19
Feels °C (?)	17	20	18	17	18	17	18	18	18	17	18	19	18	19	19	18	18	17	19	18	18

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 Atacama

Wind Update Cross-on wind has become cross-off at Las Machas (light winds from the NNE at Arica 5 km from Las Machas). 1.5m 12s groundswell from the SSW to make surfable waves.
2 hours 41 minutes ago Las Machas

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2 h 41 min ago

18 km/h

NNE

Cross-Off

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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 Las Machas 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 Las Machas Surf forecast

The above surf forecast table for Las Machas provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Las Machas can be found by selecting the local surf guide option on the grey menu. Our Las Machas 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 (Las Machas) 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 Las Machas 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.

Las Machas is 12 km (7 miles) from the city of Arica. If you plan a holiday in Atacama, look for hotels and other accommodation in Arica. Arica has rooms for a wide range of budgets as well as car hire and transport links.