Surf Forecasts:
Blonde Reef surf forecast from 29 Jul 2026:
- Best quality surf: Thursday 30 Jul, 11PM (local time) - 2.5ft (0.8m), 16s period, E swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 11PM (local time) - 5.5ft (1.7m), 12s period, ENE swell with 761 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 11AM (local time) - 3.5ft (1.1m), 9s period with ENE 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 Wednesday (Jul 29) at 11AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 1.1m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Blonde Reef in the next 16 days are 1.7m 12s and forecast to arrive on Monday (Aug 03) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 13s period and expected on Wednesday (Jul 29) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 29th Jul) | 3.5ft (1.1m) 9s |
| Best Surf | 11PM (Thu 30th Jul) | 2.5ft (0.8m) 16s |
| Most Powerful | 11PM (Mon 3rd Aug) | 5.5ft (1.7m) 12s |
Table - best surf conditions forecast for Blonde Reef over the next 16 days.
The Lowdown
Alright, Rusty here, giving you the lowdown in feet and miles.
The first few days are a bit of a slow grind. Starting Wednesday the 29th of July, we’ve got a weak, short-period swell from the ENE at about 4ft, with a period of 9 seconds. The combined energy is weak (350). The wind is crossing off from the ESE, so the surface is clean, but the waves are just too small and weak to get excited about. It’s a slow start, and the next few days are filled with marginal conditions and onshore winds that chop things up.
But here’s the good news. The standout window is Tuesday the 4th of August. The wind turns light and cross-off from the ESE, cleaning up the Blonde Reef surf zone. The swell builds to 6ft from the ENE, and the period stretches out to a nice 11 seconds. That’s real groundswell, with long lines and better shape. The combined energy climbs to a solid moderate 591. This is the best on offer for the whole outlook. It’s a reef break, so it handles that longer period well, and the offshore flow will make for some proper, clean faces. This is the session to aim for. The water temp is a very warm 80°, which is dead average for this time of year, so no surprises there.
The window after that gets a bit flaky again. The 9th of August, a Sunday, shows a spike of very good conditions on the morning. A light 4ft swell from the NE with a 10-second period, and cross-off winds from the SW. The energy is moderate (530), and it’s clean. It’s a promising call, but we’re further out, so treat it with a bit of caution.
Later in the outlook, around the 13th of August, the swell bumps up to 7ft from the ESE. That’s pushing into the bigger range, but the wind is onshore, so it’s likely going to be messy. That’s more of a kite-surfing setup than a paddle-in session.
So, the summary: Tuesday the 4th of August is the clear winner. Clean, light winds and a proper groundswell. The 9th of August is a potential backup if the forecast holds. Everything else is a matter of scraping by.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Fri night. Warm (max 27°C on Wed morning, min 24°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sat morning. Warm (max 26°C on Sat morning, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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) | ENE 9 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | ENE 11 | ENE 10 | ENE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 189 | 171 | 240 | 232 | 273 | 318 | 383 | 448 | 460 | 567 | 581 | 567 | 504 | 468 | 370 | 277 | 267 | 748 | 560 | 427 | 315 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:47PM0.87m | 3:15AM0.46m | 4:13PM0.87m | 3:55AM0.48m | 4:39PM0.85m | 4:38AM0.51m | 5:05PM0.81m | 5:25AM0.52m | 5:30PM0.74m | 6:21AM0.54m | 5:55PM0.66m | 7:31AM0.57m | 6:21PM0.58m | ||||||||
Low Tide | 8:38AM-0.07m | 10:21PM0.17m | 9:12AM-0.05m | 10:47PM0.15m | 9:45AM-0.01m | 11:14PM0.12m | 10:21AM0.05m | 11:43PM0.10m | 11:01AM0.14m | 00:12AM0.08m | 11:48AM0.23m | 00:47AM0.06m | 12:53PM0.34m | 1:28AM0.04m | |||||||
 | |  |  |  | |  | |  | | | | | | | | |  | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — |
mm | 1 | 1 | 2 | — | — | 1 | 2 | — | 5 | 1 | 2 | 4 | — | — | 2 | — | — | — | — | — | 2 |
Temp °C | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 28 | 26 |
Feels °C | 30 | 30 | 29 | 28 | 28 | 30 | 29 | 27 | 26 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 28 | 29 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | ENE 11 | ENE 10 | ENE 9 |
| kJ | 189 | 171 | 240 | 232 | 273 | 318 | 383 | 448 | 460 | 567 | 581 | 567 | 504 | 468 | 370 | 277 | 267 | 748 | 560 | 427 | 315 |
Swell 2 Height (m) Direction Period (s) | NNE 8 | NNE 8 | E 19 | E 17 | E 17 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | ENE 12 | SE 8 | SE 8 | SE 7 | NNE 9 |
| kJ | 149 | 77 | 7 | 53 | 137 | 305 | 362 | 339 | 257 | 249 | 261 | 239 | 264 | 176 | 168 | 141 | 228 | 23 | 29 | 26 | 8 |
Swell 3 Height (m) Direction Period (s) | SE 9 | ESE 9 | S 13 | N 10 | N 10 | N 10 | N 9 | N 9 | N 8 | N 8 | E 12 | N 11 | N 10 | N 9 | SE 10 | SE 9 | SE 8 | N 11 | N 11 | N 10 | SE 9 |
| kJ | 12 | 8 | 3 | 2 | 8 | 16 | 14 | 14 | 12 | 11 | 69 | 9 | 17 | 15 | 24 | 20 | 33 | 3 | 2 | 8 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 175 | 97 | 3 | 175 | 104 | 0 | 0 | 0 | 0 | 175 | 97 | 0 | 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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