Sandbox Surf Forecast

/ CAL – San Diego County (71 breaks) / California (404 breaks) /

USA (1297 breaks) / Lat Long: (33.05° N 117.30° W)

Surf Forecasts:

Sandbox surfForecast / CAL – San Diego County / USA

12 Day Weather and Surf, issued 4 pm Thursday 18 Sep 2025 PDT

Forecast update in hr min s Forecast update imminent

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

Today's Sandbox sea temperature is 21.8° C
(Which is 2.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Sandbox this week:

The surf forecast for Sandbox over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 2AM. The primary swell is predicted to be 0.4m and 13s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Sandbox in the next 12 days are 0.8m 16s and forecast to arrive on Tuesday (Sep 23) at 11AM. 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 14s period and expected on Friday (Sep 19) at 2AM.

Wave Type	Time (PDT) & Date	Wave Height & Period
Next good surf (1 star+)	2AM (Fri 19th Sep)	1.5ft (0.4m) 13s
Best Surf	5AM (Fri 19th Sep)	2.5ft (0.7m) 14s
Most Powerful	11AM (Tue 23rd Sep)	2.5ft (0.8m) 16s

Table - best surf conditions forecast for Sandbox 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 24°C on Thu afternoon, min 20°C on Fri night). Wind will be generally light.											Days 3-6 Weather Summary Moderate rain (total 13mm), heaviest on Tue afternoon. Warm (max 21°C on Mon morning, min 19°C on Sun night). Wind will be generally light.
	Thu 18		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	0	1	0	0	0	0	0	0	0	0	1	0	0	2	1	0	2	1	0	1	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SW	SW	SSW	SW	SW	SSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Period(s) (?)	14	13	13	13	13	12	13	15	14	14	14	18	17	16	16	15	14	14	14	14	13
Wave Graph (?)
kJ (?)	341	62	63	236	84	77	165	57	102	96	123	109	148	206	306	276	251	251	245	147	108
Wind (km/h)	W	WNW	W	W	NW	WNW	WNW	WNW	S	WSW	NW	W	W	SW	SSW	NW	SW	W	WNW	NW	WSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	glass	on	on	cross- on	on	on	cross- on	cross	cross- on	glass	on	on	glass	cross- on	cross- on	glass	on	on	glass	cross- on
High Tide / height (m)	7:45PM 2.14		8:53AM 1.85		8:26PM 2.12	9:15AM 1.92		9:03PM 2.07	9:37AM 1.98		9:39PM 1.97	9:58AM 2.02		10:15PM 1.85	10:19AM 2.04		10:52PM 1.71	10:41AM 2.03		11:32PM 1.56	11:05AM 1.99
Low Tide / height (m)		2:31AM 0.25		2:26PM 0.79	2:59AM 0.31		3:02PM 0.67	3:24AM 0.40		3:37PM 0.59	3:47AM 0.53		4:12PM 0.53	4:08AM 0.66		4:47PM 0.52	4:28AM 0.80		5:25PM 0.54	4:45AM 0.94

	Thu 18		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
Sunrise	-	-	6:35	-	-	6:35	-	-	6:35	-	-	6:37	-	-	6:37	-	-	6:37	-	-	6:39
Sunset	6:51	-	-	6:50	-	-	6:49	-	-	6:46	-	-	6:45	-	-	6:45	-	-	6:43	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	2	-	-	-	-	3	8	-	-	-	-	-
Temp. °C	24	22	23	23	21	23	23	21	21	20	19	21	21	20	20	20	20	21	22	20	21
Feels °C (?)	25	24	24	23	22	24	23	22	24	20	19	22	21	21	22	23	21	22	22	21	21

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 CAL - San Diego County

Wind Update Continuing clean conditions at Sandbox (calm at The Views Mobile Home Park wx 18 km from Sandbox). 0.2m 5s windswell from the WNW to make surfable waves.
1 hour 22 minutes ago Sandbox

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18 km away, 1 h 22 min ago

3 km/h

NNW

0.0

21.8

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 Sandbox 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 Sandbox Surf forecast

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

Sandbox is 2 km (1 miles) from the city of Encinitas. If you plan a vacation in San Diego County, look for hotels and other accommodation in Encinitas. Encinitas has rooms for a wide range of budgets as well as car hire and transport links.