Sand spit surfForecast / CAL – San Luis Obispo / USA

information circle12 Day Weather and Surf, issued 10 am Tuesday 26 Aug 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Sand spit surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sand spit sea temperature is
14.6° C
(Which is 2.1°C colder than average for this time of year)


Best Forecast Surf Conditions for Sand spit this week:

The surf forecast for Sand spit over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 26) at 5PM. The primary swell is predicted to be 0.7m and 17s period with a secondary swell of 0.6m and 13s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Sand spit in the next 12 days are 1.0m 18s and forecast to arrive on Sunday (Aug 31) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 12s period and expected on Friday (Aug 29) at 5AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 26th Aug)2.5ft (0.7m) 17s
Best Surf11PM (Sat 30th Aug)7ft (2.1m) 7s
Most Powerful 5AM (Sun 31st Aug)3.5ft (1.0m) 18s

Table - best surf conditions forecast for Sand spit over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 20°C on Thu morning, min 13°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Sat morning, min 14°C on Fri night). Wind will be generally light.

Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
01
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
2
2
1
0
1
0
0
1
0
0
2
0
0
2
1
0
3
1
0
2
Swell
Height Map
Wave Height (m) & direction (?)
0.8
SSW
0.7
SSW
0.7
SSW
0.7
SSW
0.7
SSW
0.5
SSW
0.7
SSW
0.6
SSW
0.4
SSW
0.5
SW
0.5
SW
0.6
SSW
0.5
SSW
0.9
SSW
0.8
SSW
1
SSW
1
SSW
1
SSW
1
SSW
1
SSW
1
SSW
Period(s) (?)181716161615141418181816191918171716161515
Wave
Graph
(?)Metric surfscale
Energy (?)5484354063803232432641841362352892373937251020868669689842581710
Wind
(km/h)
10
WSW
5
W
5
SE
5
W
10
WNW
5
NNW
15
WNW
10
WNW
5
NNW
15
WNW
20
WNW
0
WSW
10
WNW
25
NW
10
NNW
15
WNW
20
WNW
5
NW
10
WNW
20
WNW
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
glassglasscross-
on
oncross-
on
ononglassononglassononcross-
on
ononglassononcross-
on
High Tide
/ height (m)
12:49PM
1.83
12:59AM
1.59
1:17PM
1.83
1:55AM
1.43
1:48PM
1.81
3:11AM
1.29
2:26PM
1.79
5:27AM
1.23
3:15PM
1.76
4:21PM
1.77
9:08AM
1.37
5:31PM
1.81
Low Tide
/ height (m)
7:06PM
0.76
6:51AM
0.80
7:59PM
0.76
7:13AM
0.96
9:01PM
0.76
7:33AM
1.10
10:18PM
0.74
7:43AM
1.21
11:41PM
0.69
12:50AM
0.59
10:41AM
1.37
1:40AM
0.48
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
01
Sunrise6:31--6:31--6:31--6:33--6:33--6:33--6:35--
Sunset-7:38--7:37--7:36--7:35--7:32--7:31--7:30-
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
Rain (mm)
---------------------
Temp. °C161715181816201815211917242220232016181714
Feels °C (?)161715181715171514191617221818211716171412
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for CAL - San Luis Obispo

  1. weather stationWind Update Continuing clean conditions at Sand spit (calm at San Luis Obispo Airport 24 km from Sand spit). 0.9m 8s swell from the WNW with a 0.4m 17s long period groundswell from the SSW. 2 swells combining to make bigger set waves.

    Sand spit
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24 km away, 2 h 11 min ago

0 km/h
N
0.0
14.6
Air / Water (°C)
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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sand spit 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 Sand spit Surf forecast

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

Sand spit is 18 km (11 miles) from Port San Luis. If you plan a vacation in San Luis Obispo, look for hotels and other accommodation in Port San Luis. Port San Luis has rooms for a wide range of budgets as well as car hire and transport links.

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