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Dillon Beach Surf Forecast
/ CAL – Marin County (14 breaks) / California (404 breaks) /
Surf Forecasts:
Dillon Beach surfForecast / CAL – Marin County / USA
16 Day Weather and Surf, issued 4 pm Monday 18 May 2026 PDTForecast update in hr min s Forecast update imminent
Dillon Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dillon Beach sea temperature is
11.1° C
(Which is slightly cooler than normal)Best Forecast Surf Conditions for Dillon Beach this week:
The surf forecast for Dillon Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 19) at 2AM. The primary swell is predicted to be 2.5m and 9s period with a secondary swell of 2.2m and 10s. Another secondary swell of 0.9m and 16s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Dillon Beach in the next 16 days are 2.2m 13s and forecast to arrive on Tuesday (May 19) at 8PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 19th May) | 8ft (2.5m) 9s |
| Best Surf | 2AM (Tue 19th May) | 8ft (2.5m) 9s |
| Most Powerful | 8PM (Tue 19th May) | 7ft (2.2m) 13s |
Table - best surf conditions forecast for Dillon Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Tue morning, min 11°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Thu afternoon, min 8°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
NW 9 | NW 9 | WNW 10 | NW 10 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 10 | WNW 10 | WNW 10 | SW 16 | WNW 10 | WNW 14 | WNW 13 | |
1011 | 1238 | 670 | 723 | 669 | 1197 | 1174 | 1134 | 700 | 622 | 616 | 490 | 441 | 461 | 307 | 251 | 203 | 201 | 183 | 257 | 572 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | glassy | on | on | glassy | cross-on | on | glassy | cross-on | on | cross | cross | cross-on | cross-off | cross | cross-on | on | on | on | on | on | |
High Tide | 2:35PM1.26m | 00:54AM1.76m | 3:33PM1.26m | 1:48AM1.68m | 4:30PM1.26m | 2:47AM1.55m | 5:26PM1.28m | 3:53AM1.40m | 6:20PM1.32m | 5:08AM1.24m | 7:09PM1.38m | 6:30AM1.12m | 7:52PM1.44m | 7:53AM1.05m | |||||||
Low Tide | 7:21PM0.82m | 8:31AM-0.48m | 8:21PM0.84m | 9:26AM-0.41m | 9:31PM0.84m | 10:24AM-0.29m | 10:51PM0.79m | 11:22AM-0.16m | 00:15AM0.69m | 12:20PM-0.02m | 1:31AM0.53m | 1:14PM0.12m | 2:35AM0.36m | ||||||||
 |  | | |  |  | | | | | | | | | | | | | | | | |
 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 |
 | 8:17 | — | — | 8:19 | — | — | 8:20 | — | — | 8:20 | — | — | 8:21 | — | — | 8:22 | — | — | 8:22 | — | 8:23 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 16 | 20 | 18 | 14 | 17 | 14 | 12 | 16 | 14 | 10 | 14 | 14 | 11 | 12 | 12 | 10 | 12 | 12 | 11 | 14 |
13 | 11 | 17 | 14 | 12 | 15 | 12 | 9 | 14 | 12 | 8 | 12 | 11 | 10 | 9 | 9 | 8 | 10 | 9 | 9 | 12 | |
Swell 1 Height (m) Direction Period (s) | WNW 18 | NW 10 | WNW 10 | WNW 10 | WNW 13 | WNW 12 | SW 16 | WNW 11 | WNW 11 | WNW 11 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 10 | NW 10 | WNW 13 |
 kJ | 104 | 828 | 670 | 532 | 669 | 1197 | 87 | 1134 | 700 | 622 | 616 | 490 | 441 | 461 | 307 | 251 | 196 | 154 | 148 | 148 | 572 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | WNW 16 | WNW 14 | WNW 14 | SSW 14 | SW 21 | SSW 13 | SW 15 | SW 19 | SW 15 | SW 15 | SW 18 | SW 18 | SW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | WNW 14 | SW 15 |
| kJ | 51 | 366 | 478 | 569 | 40 | 162 | 35 | 78 | 236 | 82 | 112 | 197 | 109 | 137 | 157 | 203 | 203 | 201 | 183 | 257 | 326 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SW 17 | SSW 15 | SW 16 | SW 16 | SW 16 | SW 21 | SSW 13 | SW 15 | S 13 | S 12 | SW 15 | SW 14 | S 12 | S 12 | S 12 | S 12 | WNW 16 | WNW 16 | SW 15 | S 10 |
| kJ | 32 | 44 | 44 | 69 | 41 | 64 | 18 | 59 | 80 | 51 | 49 | 75 | 74 | 25 | 25 | 24 | 24 | 103 | 140 | 171 | 19 |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 9 | — | NW 10 | NW 9 | — | WNW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1011 | 1238 | — | 723 | 505 | — | 1174 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 166 | 0 | 9 | 166 | 0 | 20 | 9 | 0 | 20 | 24 | 1 | 15 | 20 | 0 | 15 | 54 | 15 | 54 | 24 | 9 | 65 |
Best forecast wave conditions in Marin County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Dillon Beach 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 Dillon Beach Surf forecast
The above surf forecast table for Dillon Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Dillon Beach can be found by selecting the local surf guide option on the grey menu. Our Dillon Beach 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 (Dillon Beach) 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 Dillon Beach 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.
Dillon Beach is 26 km (16 miles) from the city of Rohnert Park. If you plan a vacation in Marin County, look for hotels and other accommodation in Rohnert Park. Rohnert Park has rooms for a wide range of budgets as well as car hire and transport links.
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