Surf Forecasts:
Spencer Beach Park surf forecast from 15 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8AM (local time) - 1.5ft (0.4m), 12s period, WNW swell with offshore winds.
- Most powerful swell: Friday 21 Aug, 8AM (local time) - 1.5ft (0.4m), 17s period, SW swell with 72 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 8AM (local time) - 1.5ft (0.4m), 12s period with WNW swell.
Best Forecast Surf Conditions for Spencer Beach Park this week:
The surf forecast for Spencer Beach Park over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 8AM. The primary swell is predicted to be 0.4m and 12s period with a secondary swell of 0.2m and 16s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Spencer Beach Park in the next 16 days are 0.4m 17s and forecast to arrive on Friday (Aug 21) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 9s period and expected on Saturday (Aug 15) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 19th Aug) | 1.5ft (0.4m) 12s |
| Best Surf | 8AM (Wed 19th Aug) | 1.5ft (0.4m) 12s |
| Most Powerful | 8AM (Fri 21st Aug) | 1.5ft (0.4m) 17s |
Table - best surf conditions forecast for Spencer Beach Park over the next 16 days.
The Lowdown
Alright, Rusty here again, but this time in feet and Fahrenheit for those who think that way.
Let’s break down Spencer Beach Park. I’m not gonna sugarcoat it – the next two weeks look *flat*. We’re talking combined wave energy numbers that barely break into double digits most days (25 to 78), and there’s a solid gap of days with no swell at all from about the 25th of August through the morning of the 28th. That’s a dead period.
Water temp is 81°, which is pretty normal for this time of year. Nothing weird going on there.
The one window that gets my heart beating a tiny bit faster is the morning of the 19th of August, Wednesday. We’ve got a 1ft swell from the WNW, with a period of 12 seconds – that’s a legit little groundswell. The wind is dead calm, glassy. The energy is still weak (74), but for a reef break, those 1ft waves will be clean, lined up, and fun for an intermediate. It’s the cleanest surf in the whole outlook.
Another spot to watch is the 30th of August, Sunday, where we see 1.0ft to 1ft from the WNW with a period stretching to 16 seconds – that’s a long-period groundswell, meaning long waits but good shape. Winds are light offshore or glassy. The energy is still low (72-74).
Other than that? Yikes. The 15th has storm-force offshore winds at 55 mph – no way. Most afternoons have cross-onshore bumps or just flatness. There *are* a few other glassy moments, like the 22nd afternoon with 1ft from the SW, but the ride quality is rated poor. The break is fairly consistent, but the ocean just isn’t delivering.
If you’re desperate, go for the 19th morning or the 30th. Otherwise, this is a good time to wax your board and just wait. Forecasts can change, but right now, it’s a snoozer.
Rusty.
Short Range ForecastHeavy rain (total 77mm), heaviest during Sat night. Warm (max 29°C on Sun morning, min 25°C on Sat night). Winds decreasing (stormy winds from the ENE on Sat afternoon, calm by Sun morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 28°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | W 11 | NE 9 | SSW 10 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 21 | 0 | 52 | 32 | 49 | 27 | 25 | 25 | 25 | 25 | 25 | 33 | 48 | 28 | 41 | 49 | 47 | 69 | 69 | 39 | 64 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | cross-on | glassy | glassy | glassy | cross-off | off | cross-off | off | off | glassy | glassy | glassy | cross-off | cross-off | glassy | cross-on | glassy | glassy |
High Tide | 5:56PM0.60m | 6:49AM0.51m | 6:24PM0.51m | 7:40AM0.53m | 6:51PM0.41m | 8:37AM0.54m | 7:15PM0.33m | 9:44AM0.55m | 7:33PM0.25m | 10:59AM0.57m | 12:08PM0.59m | 11:45PM0.18m | |||||||||
Low Tide | 11:41AM0.09m | 00:29AM0.00m | 12:35PM0.16m | 00:54AM0.02m | 1:40PM0.21m | 1:21AM0.04m | 3:09PM0.25m | 1:51AM0.05m | 5:41PM0.25m | 2:31AM0.07m | 3:32AM0.09m | 8:34PM0.15m | |||||||||
 |  |  |  |  |  | | |  |  | | | | | | | | | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — |
mm | 3 | 13 | 51 | — | 4 | 6 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — |
Temp °C | 28 | 28 | 26 | 29 | 29 | 28 | 28 | 28 | 26 | 28 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 24 | 29 | 33 | 33 | 33 | 32 | 33 | 28 | 31 | 31 | 28 | 31 | 32 | 31 | 31 | 32 | 32 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | NE 9 | NNE 8 | NE 8 | NE 8 | NE 7 | NE 6 | NE 6 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | NE 5 | NE 6 | NNE 6 | NNE 6 | NE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 |
| kJ | 35 | 763 | 106 | 78 | 86 | 64 | 45 | 39 | 17 | 15 | 15 | 8 | 21 | 24 | 35 | 26 | 10 | 34 | 33 | 33 | 31 |
Swell 2 Height (m) Direction Period (s) | W 11 | ENE 10 | SSW 10 | SW 6 | SW 6 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 |
| kJ | 21 | 112 | 52 | 18 | 11 | 27 | 25 | 25 | 25 | 25 | 25 | 33 | 48 | 28 | 25 | 49 | 47 | 69 | 69 | 39 | 64 |
Swell 3 Height (m) Direction Period (s) | W 15 | NE 12 | ENE 9 | WNW 13 | WNW 12 | SW 5 | SW 5 | S 14 | NE 8 | ENE 8 | W 13 | ENE 7 | SSW 16 | NNE 7 | SW 16 | WNW 11 | WNW 11 | WNW 11 | W 10 | W 10 | W 10 |
| kJ | 4 | 40 | 31 | 32 | 49 | 4 | 1 | 16 | 9 | 6 | 14 | 5 | 26 | 9 | 41 | 24 | 23 | 11 | 9 | 9 | 8 |
Wind waves Height (m) Direction Period (s) | NE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 4 | — | — | — | — |
| kJ | 401 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 45 | 34 | 27 | 90 | 84 | 88 | 92 | 92 | 88 | 92 | 76 | 0 | 34 | 9 | 0 | 0 | 0 | 4 | 84 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Spencer Beach Park Surf forecast
The above surf forecast table for Spencer Beach Park provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Spencer Beach Park can be found by selecting the local surf guide option on the grey menu. Our Spencer Beach Park 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 (Spencer Beach Park) 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 Spencer Beach Park 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.
Spencer Beach Park is 84 km (52 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.
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