Chuns Reef surf break

Chuns Reef surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 am Friday 01 Aug 2025 HST
Forecast update in hr  min  s Forecast update imminent
Chuns Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Chuns Reef sea temperature is
26.7° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Chuns Reef this week:

The surf forecast for Chuns Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 07) at 5AM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 0.3m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Chuns Reef in the next 12 days are 1.6m 12s and forecast to arrive on Wednesday (Aug 06) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Aug 08) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 7th Aug)5ft (1.5m) 10s
Best Surf 5AM (Thu 7th Aug)5ft (1.5m) 10s
Most Powerful 2PM (Wed 6th Aug)5ft (1.6m) 12s

Table - best surf conditions forecast for Chuns Reef over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 27°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Mon morning, min 24°C on Mon night). Wind will be generally light.

Friday
01
Saturday
02
Sunday
03
Monday
04
Tuesday
05
Wednesday
06
Thursday
07
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.9
E
1.8
E
2
E
2
E
2
E
2
E
1.9
E
1.9
E
2.1
E
1.8
E
1.7
E
1.6
E
1.5
E
0.8
E
0.8
E
1.6
E
1.6
ENE
1.6
ENE
1.4
ENE
1.4
ENE
1.4
ENE
Period(s) (?)7777777778888141312111110109
Wave
Graph
(?)Metric surfscale
Energy (?)392370427458453484426514516507471512560551437771765665490435434
Wind
(km/h)
30
E
30
ENE
25
E
30
ENE
30
ENE
25
E
30
E
30
ENE
25
E
25
E
25
ENE
20
E
20
E
25
ENE
20
E
20
ENE
20
ENE
15
ENE
15
NNE
10
NE
10
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrossoff
High Tide
/ height (m)
10:03AM
0.39
6:54PM
0.21
11:01AM
0.43
8:56PM
0.17
11:51AM
0.46
10:56PM
0.15
12:34PM
0.50
12:05AM
0.15
1:13PM
0.53
12:53AM
0.16
1:50PM
0.56
1:34AM
0.18
2:24PM
0.58
2:14AM
0.20
Low Tide
/ height (m)
5:15PM
0.21
1:37AM
0.06
6:39PM
0.17
2:29AM
0.06
6:57PM
0.13
3:26AM
0.05
7:20PM
0.11
4:19AM
0.03
7:44PM
0.09
5:07AM
0.01
8:08PM
0.07
5:52AM
-0.01
8:33PM
0.06
Friday
01
Saturday
02
Sunday
03
Monday
04
Tuesday
05
Wednesday
06
Thursday
07
Sunrise6:05--6:05--6:05--6:05--6:05--6:07--6:07--
Sunset-7:10--7:10--7:09--7:09--7:08--7:08--7:07-
clearclearclearpart cloudpart cloudclearpart cloudpart cloudpart cloudclearclearpart cloudpart cloudclearclearpart cloudclearclearthunderstorm thunderstorm thunderstorm
Rain (mm)
------------------211
Temp. °C262725252625252625272725262625262725272626
Feels °C (?)242524232424242424262624252525252726292929
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Eyeball surf reportRecent Eyeball Surf Reports for HAW - Oahu

  1. weather stationWind Update The wind is still cross-off at Chuns Reef (light winds from the ENE at Wheeler Air Force Base/oahu Airport 19 km from Chuns Reef). 1.7m 6s windswell from the E with a 0.5m 11s groundswell from the NNE. 2 swells combining to make bigger set waves.

    Chuns Reef
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19 km away, 2 h 10 min ago

11 km/h
ENE
0.0
26.7
Air / Water (°C)
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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 Chuns Reef 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 Chuns Reef Surf forecast

The above surf forecast table for Chuns Reef provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Chuns Reef can be found by selecting the local surf guide option on the grey menu. Our Chuns 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 (Chuns 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 Chuns 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.

Chuns Reef is 15 km (9 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.

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