Surf Forecasts:
Blonde Reef surf forecast from 13 Sep 2026:
- Best quality surf: Thursday 17 Sep, 11AM (local time) - 7.5ft (2.3m), 10s period, ENE swell with glassy winds.
- Most powerful swell: Thursday 17 Sep, 11AM (local time) - 7.5ft (2.3m), 10s period, ENE swell with 963 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 2AM (local time) - 3ft (0.9m), 8s period with NE swell.
Best Forecast Surf Conditions for Blonde Reef this week:
The surf forecast for Blonde Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 2AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.5m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Blonde Reef in the next 16 days are 2.3m 10s and forecast to arrive on Thursday (Sep 17) at 11AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 17s period and expected on Friday (Sep 18) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 15th Sep) | 3ft (0.9m) 8s |
| Best Surf | 11AM (Thu 17th Sep) | 7.5ft (2.3m) 10s |
| Most Powerful | 11AM (Thu 17th Sep) | 7.5ft (2.3m) 10s |
Table - best surf conditions forecast for Blonde Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's cookin' for Blonde Reef.
The next few days are a write-off, honestly. We've got a run of weak, onshore or cross-onshore junk starting from Saturday the 12th. Small swell with poor conditions, and that NE wind just messin' it up. You're lookin' at about 2ft to 5ft of slop. Not worth paddlin' out for. There's a bit of moderate energy in the water, but it's all wind-affected and messy.
Now, come Thursday the 17th, things get interesting. The wind is forecast to go glassy in the morning, and we've got a solid 8ft swell from the ENE. That's a big jump in energy, up to 967, which is strong. That glassy morning is the absolute standout. The swell's period is 10 seconds, so it'll have some decent shape, and that offsore wind will have the waves clean and lined up. This is the best on offer, hands down. The water is about 81°, which is pretty normal for this time of year, no real anomaly to speak of.
Friday the 18th and Saturday the 19th still look good, with clean conditions and a solid 6ft of ENE swell. The energy is still moderate to strong. But the real magic is that Thursday morning glass-off with 8ft swell.
After that, from Sunday the 20th onwards, we start to lose the clean winds. The swell stays around 6ft to 8ft, but the wind shifts back onshore or cross-on, making it choppy and messy. There's some big energy late in the run, over 900 again on the 22nd and 23rd, but it's all blown out. A couple of days later in the week, around the 24th and 25th, we get some clean cross-offshore winds again, but the swell drops to 5ft to 7ft. It's marginal but might be worth a look if you're desperate.
So, to sum it up: forget the first few days. Thursday the 17th morning is your absolute winner. Get on it.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 27°C on Mon morning, min 24°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 56mm), heaviest during Thu morning. Warm (max 27°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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) | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | E 11 | E 10 | E 10 | ENE 7 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | E 8 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 94 | 121 | 121 | 124 | 138 | 70 | 69 | 101 | 62 | 84 | 237 | 268 | 191 | 651 | 963 | 692 | 586 | 422 | 403 | 403 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | on | cross-on | glassy | cross | cross-on | on | cross-on | on | on | glassy | cross-off | glassy | cross-off | cross-off | glassy |
High Tide | 3:44PM0.74m | 4:27AM0.76m | 4:07PM0.66m | 5:08AM0.75m | 4:27PM0.58m | 5:52AM0.73m | 4:43PM0.51m | 6:45AM0.69m | 4:48PM0.44m | 7:59AM0.65m | 9:43AM0.64m | |||||||||
Low Tide | 10:01PM0.01m | 10:26AM0.19m | 10:26PM0.02m | 11:10AM0.26m | 10:51PM0.04m | 12:01PM0.33m | 11:17PM0.07m | 1:14PM0.39m | 11:49PM0.11m | 00:35AM0.16m | 2:08AM0.19m | |||||||||
 |  |  | |  | | |  | | | |  |  |  |  | | | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — |
mm | — | — | — | — | — | — | — | 1 | — | — | 1 | 2 | 3 | 15 | 10 | 9 | 13 | 3 | 1 | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 29 | 28 | 27 | 27 | 28 | 29 | 29 | 30 | 30 | 30 | 31 | 31 | 29 | 30 | 31 | 30 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NE 8 | ENE 6 | NE 5 | NE 8 | NE 8 | E 7 | E 10 | E 10 | ENE 7 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | E 8 | E 8 |
| kJ | 94 | 121 | 121 | 124 | 138 | 40 | 30 | 101 | 62 | 57 | 237 | 268 | 191 | 651 | 963 | 692 | 586 | 422 | 403 | 403 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | SE 8 | ENE 8 | ESE 8 | NE 8 | NE 8 | E 12 | E 7 | E 11 | NNE 7 | NNE 7 | NNE 8 | SE 11 | SE 10 | SE 10 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
| kJ | 84 | 62 | 24 | 45 | 26 | 70 | 69 | 73 | 33 | 84 | 31 | 31 | 20 | 4 | 4 | 4 | 124 | 159 | 153 | 144 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 9 | ESE 5 | SE 8 | E 16 | SE 8 | SE 8 | SE 8 | E 11 | NNE 8 | N 10 | SE 11 | N 9 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | S 11 |
| kJ | 9 | 12 | 3 | 32 | 5 | 10 | 10 | 14 | 61 | 39 | 7 | 5 | 7 | 22 | 20 | 19 | 9 | 8 | 8 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 8 | — | — | — | — | — | — | — | N 7 | — | N 7 | — | — | — | — | — | — | — |
| kJ | — | — | 64 | — | — | — | — | — | — | — | 28 | — | 4 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 56 | 56 | 20 | 112 | 0 | 0 | 88 | 6 | 90 | 87 | 88 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Blonde Reef Surf forecast
The above surf forecast table for Blonde Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Blonde Reef can be found by selecting the local surf guide option on the grey menu. Our Blonde Reef 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 (Blonde Reef) 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 Blonde Reef 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.
Blonde Reef is 5 km (3 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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