Surf Forecasts:
Boulders surf forecast from 6 Aug 2026:
- Most powerful swell: Monday 10 Aug, 10AM (local time) - 8ft (2.5m), 16s period, S swell with 3,342 kJ wave energy.
Best Forecast Surf Conditions for Boulders this week:
The most powerful waves expected at Boulders in the next 16 days are 2.5m 16s and forecast to arrive on Monday (Aug 10) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (+13) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 10th Aug) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Boulders over the next 16 days.
The Lowdown
Alright, let’s break down what’s happening at Boulders over the next couple of weeks.
First off, the early part of this stretch is a total write-off. From Friday August 7th through Sunday August 16th, it’s messy out there. We’ve got consistent cross-onshore winds blowing in the 22 to 31 mph range, churning up the water. The swell is hanging around 5 to 10 feet, but with short periods—mostly 7 to 10 seconds—and that strong breeze turning everything into a lumpy, blown-out mess. Energy values are moderate, hitting over 2400 at times, but it doesn’t matter with conditions that rough. This is not the time to paddle out unless you’re after a beating. Water temp is typical for this time of year, nothing out of the ordinary.
Now, things start to shift around Monday August 17th. We finally see a cleaner window develop. Winds turn cross-off from the ENE, bringing in some order. Swell drops a bit to around 5 to 6 feet, but the period jumps to 16 seconds—that’s a proper groundswell. Energy values are still solid, around 2000-2100, and with clean conditions, this is your best bet in the whole forecast. Tuesday the 18th holds similar potential, with a slightly smaller swell around 4 to 5 feet, period dropping to 13-14 seconds, but still clean with light cross-off breezes. These two days are the standout: not huge, but quality waves for the advanced crew.
Then from Wednesday the 19th onward, it fades again. Swell drops under 3 feet, winds turn back onshore or cross, and it gets lumpy once more. A few days around the 22nd show some increase in swell size, but the onshore winds and short periods make it a no-go.
Bottom line: The first week and a half is a wash. If you’re itching for something, Monday the 17th and Tuesday the 18th are your days—clean, long-period groundswell, manageable size, and minimal crowd pressure. After that, it’s back to waiting.
Short Range ForecastLight rain (total 9mm), mostly falling on Thu night. Warm (max 25°C on Thu night, min 23°C on Fri afternoon). Mainly strong winds. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Mon morning. Warm (max 26°C on Mon night, min 24°C on Mon morning). Mainly near gales. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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) | SSE 8 | SE 7 | SSE 10 | S 10 | S 10 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | S 16 | S 16 | S 14 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 824 | 640 | 2668 | 1525 | 1207 | 1018 | 1176 | 1136 | 1546 | 3342 | 2749 | 1649 | 1284 | 1168 | 1203 | 1097 | 1015 | 939 | 796 | 838 | 829 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross |
High Tide | 1:29PM0.89m | 1:58AM1.06m | 2:37PM0.92m | 3:01AM1.11m | 3:39PM0.97m | 4:00AM1.17m | 4:37PM1.02m | 4:55AM1.23m | 5:30PM1.07m | 5:48AM1.26m | 6:21PM1.11m | 6:39AM1.26m | 7:11PM1.13m | ||||||||
Low Tide | 7:19AM0.24m | 7:29PM0.24m | 8:28AM0.18m | 8:35PM0.20m | 9:31AM0.12m | 9:38PM0.15m | 10:29AM0.05m | 10:36PM0.10m | 11:22AM0.00m | 11:30PM0.06m | 12:13PM-0.02m | 00:22AM0.04m | 1:01PM-0.02m | 1:13AM0.05m | |||||||
 |  |  | |  | | | |  |  | | | |  |  | | | | | | | |
 | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — |
 | — | 6:19 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — |
mm | — | 1 | 3 | 1 | — | 2 | — | — | 4 | 5 | 5 | 2 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 20 | 19 | 19 | 18 | 18 | 19 | 20 | 20 | 20 | 20 | 21 | 23 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | S 15 | SW 14 | S 10 | S 10 | S 10 | S 12 | S 12 | S 12 | S 16 | S 16 | S 14 | S 14 | S 13 | S 14 | S 13 | S 12 | S 12 | S 11 | SSE 14 | S 13 |
| kJ | 365 | 544 | 169 | 1525 | 1207 | 968 | 833 | 726 | 529 | 3342 | 2749 | 1649 | 1033 | 792 | 844 | 630 | 427 | 282 | 152 | 192 | 212 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 15 | ENE 12 | SW 14 | SW 13 | SW 13 | SW 13 | S 19 | S 17 | SW 12 | — | SW 18 | SW 18 | S 16 | SW 17 | SW 18 | SW 15 | SW 16 | S 14 | S 11 | SW 14 |
| kJ | 362 | 269 | 13 | 99 | 87 | 59 | 42 | 258 | 806 | 5 | — | 51 | 85 | 334 | 135 | 111 | 77 | 161 | 150 | 79 | 103 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | ENE 12 | SW 23 | ENE 11 | SW 21 | SSW 20 | S 20 | SW 13 | S 20 | — | — | NW 12 | SW 13 | SW 19 | NW 11 | SW 15 | SW 18 | SSE 15 | SW 16 | SW 15 | S 18 |
| kJ | 29 | 14 | 21 | 12 | 18 | 39 | 31 | 25 | 753 | — | — | 6 | 7 | 126 | 5 | 58 | 49 | 73 | 124 | 104 | 99 |
Wind waves Height (m) Direction Period (s) | SSE 8 | SE 7 | SSE 10 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
| kJ | 824 | 640 | 2668 | 819 | 875 | 1018 | 1176 | 1136 | 1546 | 1787 | 1540 | 1499 | 1284 | 1168 | 1203 | 1097 | 1015 | 939 | 796 | 838 | 829 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2244 | 2377 | 1245 | 1245 | 1245 | 1245 | 1245 | 1245 | 1209 | 1245 | 1251 | 1245 | 1245 | 1245 | 1140 | 1140 | 1195 | 1140 | 1140 | 1227 | 1140 |
Best forecast wave conditions in Upolu | |||||||||||||||||||||
Best forecast wave conditions in Samoa | |||||||||||||||||||||
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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 Boulders 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 Boulders Surf forecast
The above surf forecast table for Boulders provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Boulders can be found by selecting the local surf guide option on the grey menu. Our Boulders 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 (Boulders) 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 Boulders 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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