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Guilderton Rivermouth Surf Forecast
/ WA – Perth City (29 breaks) / New South Wales (297 breaks) /
Surf Forecasts:
Guilderton Rivermouth surfForecast / WA – Perth City / Australia
16 Day Weather and Surf, issued 1 pm Thursday 21 May 2026 AWSTForecast update in hr min s Forecast update imminent
Guilderton Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Guilderton Rivermouth sea temperature is
21.1° C
(Which is slightly cooler than normal)Best Forecast Surf Conditions for Guilderton Rivermouth this week:
The surf forecast for Guilderton Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (May 22) at 11PM. The primary swell is predicted to be 2.1m and 13s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Guilderton Rivermouth in the next 16 days are 2.5m 14s and forecast to arrive on Thursday (May 21) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (May 22) at 5AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 22nd May) | 7ft (2.1m) 13s |
| Best Surf | 8PM (Tue 26th May) | 4ft (1.2m) 19s |
| Most Powerful | 8PM (Thu 21st May) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Guilderton Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 10°C on Sat morning). Winds decreasing (fresh winds from the S on Thu night, light winds from the ENE by Sat morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 15°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
WSW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 16 | WSW 15 | WSW 13 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 19 | WSW 18 | WSW 16 | WSW 16 | W 15 | W 14 | |
1848 | 2323 | 1518 | 1306 | 1077 | 822 | 694 | 488 | 258 | 568 | 669 | 957 | 840 | 874 | 499 | 664 | 1464 | 2018 | 2134 | 2372 | 2521 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross-off | cross-off | cross | off | off | cross | off | cross-off | cross | cross-off | cross-off | on | cross-off | cross | on | cross-off | cross | cross-on | cross-on | on | |
High Tide | 12:05PM0.60m | 11:18AM0.52m | 10:06AM0.46m | 8:31AM0.46m | 7:19AM0.50m | 7:14AM0.56m | 7:27AM0.61m | ||||||||||||||
Low Tide | 11:28PM0.08m | 00:03AM0.14m | 00:17AM0.21m | 11:55PM0.27m | 9:38PM0.29m | 4:40PM0.26m | 4:40PM0.20m | ||||||||||||||
 |  |  | |  | | | | | | | | |  | | | | | |  | | |
 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 |
 | 5:27 | — | — | 5:25 | — | — | 5:25 | — | — | 5:24 | — | — | 5:24 | — | — | 5:23 | — | — | 5:23 | — | 5:23 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | |
Temp °C | 20 | 18 | 16 | 17 | 17 | 13 | 16 | 15 | 16 | 21 | 18 | 19 | 23 | 19 | 20 | 23 | 20 | 21 | 22 | 20 | 19 |
16 | 13 | 10 | 12 | 12 | 10 | 13 | 11 | 11 | 18 | 14 | 13 | 19 | 18 | 15 | 19 | 18 | 14 | 15 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | WSW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 11 | WSW 15 | WSW 13 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 18 | WSW 16 | WSW 16 | W 15 | W 14 |
 kJ | 1848 | 2323 | 1518 | 1306 | 1077 | 822 | 694 | 488 | 207 | 568 | 669 | 957 | 840 | 874 | 499 | 408 | 1464 | 2018 | 2134 | 2372 | 2521 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 18 | SW 16 | SW 16 | WSW 11 | WSW 18 | — | NNW 5 | NW 6 | WSW 21 | WSW 19 | WSW 12 | W 10 | — | — | — |
| kJ | — | — | — | — | — | — | 13 | 67 | 258 | 149 | 180 | — | 11 | 8 | 150 | 664 | 411 | 158 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 22 | WSW 20 | — | — | — | — | W 23 | NW 6 | NW 4 | SW 12 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 9 | 75 | — | — | — | — | 11 | 1 | 10 | 248 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | — | — | — | — | — | — | — | NE 3 | — | NE 3 | N 4 | — | — | NNW 3 | — | — | NNW 4 | WNW 10 | NW 5 | — |
| kJ | 59 | — | — | — | — | — | — | — | 2 | — | 2 | 9 | — | — | 7 | — | — | 20 | 264 | 41 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 655 | 118 | 217 | 217 | 0 | 0 | 73 | 0 | 21 | 217 | 21 | 297 | 227 | 0 | 74 | 332 | 217 | 390 | 425 | 866 | 275 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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 Guilderton Rivermouth 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 Guilderton Rivermouth Surf forecast
The above surf forecast table for Guilderton Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Guilderton Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Guilderton Rivermouth 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 (Guilderton Rivermouth) 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 Guilderton Rivermouth 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.
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