40th Street Surf Forecast

/ Florida – South (39 breaks) / Florida (155 breaks) /

USA (1297 breaks) / Lat Long: (26.42° N 80.06° W)

Surf Forecasts:

40th Street surfForecast / Florida – South / USA

12 Day Weather and Surf, issued 1 am Monday 15 Sep 2025 EDT

Forecast update in hr min s Forecast update imminent

40th Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's 40th Street sea temperature is 30.1° C
(Which is 1.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for 40th Street this week:

The surf forecast for 40th Street over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 20) at 11PM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at 40th Street in the next 12 days are 1.7m 6s and forecast to arrive on Friday (Sep 19) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Sunday (Sep 21) at 2AM.

Wave Type	Time (EDT) & Date	Wave Height & Period
Next good surf (1 star+)	11PM (Sat 20th Sep)	3.5ft (1.1m) 6s
Best Surf	11PM (Sat 20th Sep)	3.5ft (1.1m) 6s
Most Powerful	2AM (Fri 19th Sep)	5.5ft (1.7m) 6s

Table - best surf conditions forecast for 40th Street over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Heavy rain (total 30mm), heaviest during Wed afternoon. Warm (max 29°C on Tue morning, min 24°C on Wed afternoon). Winds increasing (light winds from the NNE on Mon morning, fresh winds from the ENE by Wed night).									Days 3-6 Weather Summary Heavy rain (total 79mm), heaviest during Thu morning. Warm (max 28°C on Fri afternoon, min 25°C on Thu morning). Wind will be generally light.
	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	NNE	NNE	NNE	NNE	NE	NNE	NE	NE	NE	ENE	NE	ENE	ENE	ENE	NE	NE	NE	NE	NE	NE	ESE
Period(s) (?)	8	8	8	8	8	8	8	7	5	5	6	6	7	7	7	6	6	6	7	7	13
Wave Graph (?)
kJ (?)	126	177	147	117	135	86	164	160	49	98	159	213	154	99	54	58	58	60	67	39	34
Wind (km/h)	ENE	ENE	E	ENE	ENE	ENE	ENE	NNE	ENE	SE	NE	E	ESE	E	E	N	NE	WNW	SW	SSE	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	on	on	on	cross- on	on	on	cross- on	on	cross- on	cross- on	on	cross- on	on	glass	cross	cross- on	glass	glass	cross- on	glass
High Tide / height (m)		3:53PM 0.91	4:04AM 0.88		5:02PM 0.92		5:15AM 0.91	6:03PM 0.94		6:17AM 0.94	6:55PM 0.97		7:11AM 0.98	7:39PM 0.99		7:58AM 1.01		8:18PM 1.00	8:40AM 1.03		8:55PM 1.00
Low Tide / height (m)	9:29AM 0.14		10:08PM 0.32	10:39AM 0.15		11:14PM 0.29	11:42AM 0.15		12:12AM 0.25	12:36PM 0.14		1:02AM 0.20	1:25PM 0.13		1:47AM 0.16		2:09PM 0.14	2:28AM 0.12		2:49PM 0.16	3:06AM 0.11

	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
Sunrise	7:05	-	-	7:05	-	-	7:05	-	-	7:05	-	-	7:07	-	-	7:07	-	-	7:07	-	-
Sunset	-	7:24	-	-	7:22	-	-	7:22	-	-	7:21	-	-	7:20	-	-	7:19	-	-	7:17	-

Rain (mm)	-	1	6	-	-	-	3	15	5	16	11	23	7	4	5	2	3	8	2	1	2
Temp. °C	28	28	28	29	29	28	27	26	27	27	26	26	26	28	27	27	28	28	28	30	29
Feels °C (?)	30	29	30	31	30	29	28	28	27	27	29	28	29	31	30	30	30	31	32	32	32

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 Florida - South

Wind Update Continuing clean conditions at 40th Street (calm at Boca Raton 5 km from 40th Street). A 1.0m swell from the N
1 hour 17 minutes ago 40th Street

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1 h 17 min ago

0 km/h

NNE

Clean

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Information about the 40th Street Surf forecast

The above surf forecast table for 40th Street provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at 40th Street can be found by selecting the local surf guide option on the grey menu. Our 40th Street 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 (40th Street) 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 40th Street 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.

40th Street is 5 km (3 miles) from the city of Delray Beach. If you plan a vacation in South Florida, look for hotels and other accommodation in Delray Beach. Delray Beach has rooms for a wide range of budgets as well as car hire and transport links.