Surf Forecasts:
40th Street surf forecast from 18 Sep 2026:
- Best quality surf: Friday 25 Sep, 5AM (local time) - 2.5ft (0.7m), 11s period, NE swell with glassy winds.
- Most powerful swell: Friday 25 Sep, 2PM (local time) - 3.5ft (1.1m), 11s period, NE swell with 293 kJ wave energy.
- Next surfable swell (1★+): Friday 25 Sep, 5AM (local time) - 2.5ft (0.7m), 11s period with NE swell.
Best Forecast Surf Conditions for 40th Street this week:
The surf forecast for 40th Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 25) at 5AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.4m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at 40th Street in the next 16 days are 1.1m 11s and forecast to arrive on Friday (Sep 25) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 5s period and expected on Sunday (Sep 20) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 25th Sep) | 2.5ft (0.7m) 11s |
| Best Surf | 5AM (Fri 25th Sep) | 2.5ft (0.7m) 11s |
| Most Powerful | 2PM (Fri 25th Sep) | 3.5ft (1.1m) 11s |
Table - best surf conditions forecast for 40th Street over the next 16 days.
Short Range ForecastHeavy rain (total 31mm), heaviest during Fri night. Warm (max 30°C on Sun afternoon, min 27°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Mon night. Warm (max 30°C on Mon afternoon, min 27°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 11 | NNE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 107 | 79 | 51 | 37 | 22 | 27 | 19 | 19 | 12 | 7 | 10 | 35 | 30 | 28 | 28 | 19 | 19 | 9 | 7 | 12 | 109 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | on | on | cross-on | on | on | cross | cross-off | cross-on | cross | glassy | cross-on | cross | cross-on | on | cross | cross | on | cross |
High Tide | 2:13PM0.82m | 2:20AM0.79m | 3:13PM0.80m | 3:21AM0.78m | 4:15PM0.81m | 4:25AM0.79m | 5:14PM0.84m | 5:25AM0.83m | 6:05PM0.88m | 6:19AM0.88m | 6:50PM0.93m | 7:07AM0.94m | 7:31PM0.97m | ||||||||
Low Tide | 8:06AM0.29m | 8:38PM0.41m | 9:07AM0.31m | 9:43PM0.42m | 10:09AM0.31m | 10:44PM0.41m | 11:04AM0.30m | 11:37PM0.37m | 11:54AM0.26m | 00:22AM0.31m | 12:39PM0.23m | 1:03AM0.25m | 1:21PM0.20m | 1:41AM0.18m | |||||||
 |  |  | | | | | | |  |  | | | | | | |  | | | | |
 | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — |
 | — | 7:21 | — | — | 7:20 | — | — | 7:19 | — | — | 7:17 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — |
mm | — | 4 | 5 | 5 | 2 | 4 | 4 | 1 | 6 | — | 4 | 11 | — | 1 | 3 | — | 1 | 2 | — | 1 | 2 |
Temp °C | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 30 | 28 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 28 | 28 | 29 | 29 |
Feels °C | 32 | 31 | 30 | 32 | 30 | 31 | 32 | 31 | 30 | 32 | 31 | 31 | 33 | 32 | 31 | 32 | 31 | 32 | 31 | 30 | 32 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 11 | NNE 11 |
| kJ | 107 | 79 | 51 | 37 | 22 | 27 | 19 | 19 | 12 | 7 | 7 | 35 | 30 | 28 | 28 | 19 | 19 | 8 | 7 | 12 | 109 |
Swell 2 Height (m) Direction Period (s) | E 8 | ESE 8 | ESE 8 | E 7 | NE 9 | E 7 | E 8 | E 8 | E 8 | SSE 3 | NNE 10 | E 8 | SSE 3 | E 8 | E 7 | — | E 8 | NE 15 | E 3 | NE 7 | ESE 3 |
| kJ | 1 | 6 | 6 | 4 | 3 | 1 | 6 | 5 | 5 | 1 | 10 | 1 | 1 | 1 | 1 | — | 1 | 9 | 1 | 7 | 5 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | — | E 7 | E 9 | — | — | — | E 8 | ESE 4 | — | E 8 | E 8 | E 6 | E 8 | NE 16 | E 8 | NE 14 | NE 13 | NE 7 |
| kJ | 3 | 3 | 3 | — | 4 | 2 | — | — | — | 5 | 1 | — | 1 | 1 | 1 | 1 | 10 | 1 | 7 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | ESE 7 | — | — | SSE 5 | — | — | — | — | — | — | — | — | ESE 3 | — | E 3 | — |
| kJ | — | — | — | — | — | 4 | — | — | 2 | — | — | — | — | — | — | — | — | 2 | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 311 | 311 | 4 | 367 | 1620 | 367 | 309 | 775 | 772 | 308 | 1696 | 58 | 167 | 307 | 165 | 1616 | 1592 | 167 | 307 | 854 | 227 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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 40th Street 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 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 16 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.
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