Chuns Reef 48 hour detailed Surf Forecast

Lat Long: 21.62° N 158.08° W

Issued: 1 am 17 Jul 2026 (local time)

Forecast update in hr min

Today's Chuns Reef sea temperature is

26.2° C

Chuns Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Chuns Reef today (17 Jul):

Morning surf: Morning surf (17 Jul, local time) - 4.5ft (1.3m), 6s period with E swell.
Afternoon surf: Afternoon surf (17 Jul, local time) - 5ft (1.5m), 7s period with ENE swell.
Evening surf: Evening surf (17 Jul, local time) - 5ft (1.6m), 7s period with ENE swell.

The current surf forecast for Chuns Reef at 8AM is: 1.3m 6s primary swell from a East direction and 0.8m 7s secondary swell from a North-northeast direction, 0.5m 14s secondary swell from a West direction (forecast issued at 01:00am July 17). The wind direction is predicted to be cross-offshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (17 Jul)	4.5ft (1.3m)	6s
Afternoon (17 Jul)	5ft (1.5m)	7s
Evening (17 Jul)	5ft (1.6m)	7s

Table - waves today at Chuns Reef. (Swell directed towards the surf break)

	Short Range Forecast Mostly dry. Warm (max 27°C on Fri afternoon, min 23°C on Sat night). Wind will be generally light.
	Friday 17								Saturday 18								Sunday 19
	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	0	0	0	1	1	1	1	1	1	0	1	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	W 14	W 14	E 6	E 6	ENE 7	ENE 7	ENE 7	ENE 7	ENE 7	E 7	ENE 7	ENE 7	ENE 7	ENE 8	ENE 8	ENE 8	ENE 8	E 8	E 8	E 8	ENE 8	ENE 8	E 8	ENE 8
Wave Graph
kJ	150	148	137	135	195	195	214	240	232	255	247	285	346	416	385	355	383	341	333	284	302	266	219	266
Wind (km/h)	E	E	E	E	E	E	E	E	E	E	E	E	ENE	ENE	ENE	ENE	ENE	ENE	E	ENE	ENE	ENE	ENE	ENE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore 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	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off
High Tide			5:30AM0.25m				5:32PM0.51m				6:34AM0.28m				6:07PM0.44m				7:43AM0.32m				6:39PM0.37m
Low Tide				9:35AM0.06m					11:33PM0.02m			10:35AM0.13m					00:06AM0.02m				11:50AM0.19m


	—	5:58	—	—	—	—	—	—	—	5:58	—	—	—	—	—	—	—	6:00	—	—	—	—	—	—
	—	—	—	—	—	7:16	—	—	—	—	—	—	—	7:16	—	—	—	—	—	—	—	7:16	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	24	24	25	26	27	27	25	25	25	25	25	27	26	25	24	24	24	23	24	26	26	25	25	24
Feels °C	24	24	26	26	27	27	26	26	26	25	24	26	25	24	23	23	23	23	23	25	24	24	24	23
Swell 1 Height (m) Direction Period (s)	NNE 7	NNE 7	NNE 7	NNE 7	W 14	W 14	W 14	W 14	WNW 13	WNW 13	WNW 13	WNW 13	WNW 13	WNW 13	WNW 13	WNW 13	NNE 8	NNE 8	NNE 8	NNE 7	WNW 12	WNW 12	NNE 8	NNE 8
kJ	46	48	57	41	101	100	100	96	60	58	57	57	57	57	57	33	20	22	12	43	29	29	73	24
Swell 2 Height (m) Direction Period (s)	W 14	W 14	W 14	W 14	SW 16	SW 16	SSW 16	SSW 15	SSW 15	SW 15	SSW 15	SSW 14	SSW 14	NNE 8	NNE 8	NNE 8	WNW 13	WNW 12	WNW 12	WNW 12	SSW 13	SSW 13	WNW 12	WNW 12
kJ	150	148	103	101	64	64	48	47	87	56	21	41	41	14	14	14	32	29	29	29	16	17	29	28
Swell 3 Height (m) Direction Period (s)	SW 13	SW 15	SW 12	SW 16	SW 12	SSW 12	SSW 12	SSW 12	S 9	S 13	SSW 11	SSW 11	SSW 11	SSW 14	SSW 12	SSW 14	SSW 14	SSW 14	SSW 12	SSW 12	SW 20	SW 20	SSW 13	SSW 13
kJ	40	57	36	64	22	14	14	14	2	3	12	11	11	20	14	40	19	19	13	13	15	15	17	17
Wind waves Height (m) Direction Period (s)	E 6	E 6	E 6	E 6	ENE 7	ENE 7	ENE 7	ENE 7	ENE 7	E 7	ENE 7	ENE 7	ENE 7	ENE 8	ENE 8	ENE 8	ENE 8	E 8	E 8	E 8	ENE 8	ENE 8	E 8	ENE 8
kJ	135	137	137	135	195	195	214	240	232	255	247	285	346	416	385	355	383	341	333	284	302	266	219	266
Nearest Offshore or Glassy	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Aligator Rock HAW - Oahu	Chuns and Jocks Reefs HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Yokohama Bay HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Keaau HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Lahilahi Point HAW - Oahu	Sewers (Maili) HAW - Oahu	Aligator Rock HAW - Oahu	Yokohama Bay HAW - Oahu
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	2	2	2	2	1	2	1	1	1	1	1	1	1	1
Distance (km)	1	1	1	1	1	1	1	1	0	3	19	19	19	19	3	19	3	3	21	3	23	25	1	19
Best forecast wave conditions in Oahu	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Maili Point	Maili Point	Maili Point	Maili Point	Ranches	Ko Olina Resort	Ranches	Ranches	Ranches	Ranches	Maili Point	Tracks (Nanakuli)	Ranches	Ranches
Rating (10 max)	2	2	2	2	1	1	1	1	1	1	2	2	2	2	1	2	1	1	1	1	1	2	1	1
Best forecast wave conditions in United States	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Magics HAW - Big Island	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Waiaha Rivermouth / Honls HAW - Big Island	Steamer Lane-Middle Peak CAL - Santa Cruz	Gale Point CAL - Humboldt	Fullers CAL - Monterey	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	The Wedge CAL - Orange County	Cortez Bank CAL - San Diego County	Ranches HAW - Oahu	Cojo CAL - Santa Barbara	Ghost Tree CAL - Monterey	Boners CAL - San Luis Obispo	The Wedge CAL - Orange County
Rating (10 max)	3	3	2	2	1	1	3	3	3	3	2	2	3	3	2	3	2	2	4	1	3	3	3	3
Header Global	Dunedin - Kuri Bush New Zealand	Dunedin - Kuri Bush New Zealand	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Dinner Plates New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Humenga Point New Zealand	Ning Nong Point and Reef New Zealand
Rating (10 max)	6	7	6	6	9	9	9	8	7	6	6	9	6	7	7	7	7	8	8	7	5	5	6	7

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Latest Updates

Ben Mondy

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.

Chuns Reef 48 hour detailed Surf Forecast

How big are the waves at Chuns Reef today (17 Jul):

Short Range Forecast

Latest Updates

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

The Five Best Forecasts For International Surfing Day 2026

Best Surf Travel Deals & Discounts For 2026 To Help Make Surf Travel Cheaper

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

FREE! Surf-Forecast.com widget for your website