Turtle Bay surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 am Tuesday 18 Nov 2025 HST
Forecast update in hr  min  s Forecast update imminent
Turtle Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Turtle Bay sea temperature is
25.9° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Turtle Bay this week:

The surf forecast for Turtle Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Nov 18) at 8AM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Turtle Bay in the next 12 days are 2.3m 16s and forecast to arrive on Saturday (Nov 22) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Wednesday (Nov 19) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Tue 18th Nov)2.5ft (0.8m) 13s
Best Surf 8AM (Tue 18th Nov)2.5ft (0.8m) 13s
Most Powerful 5PM (Sat 22nd Nov)7.5ft (2.3m) 16s

Table - best surf conditions forecast for Turtle Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 4mm), mostly falling on Tue night. Warm (max 25°C on Tue morning, min 24°C on Tue morning). Winds increasing (light winds from the ENE on Tue morning, strong winds from the E by Wed afternoon).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sat afternoon. Warm (max 25°C on Fri morning, min 23°C on Sat night). Mainly fresh winds.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
1
0
1
1
1
1
1
2
3
3
2
2
2
1
2
2
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.9
NW
0.8
NW
1.1
NW
1.3
NW
2
NW
2.2
NW
1.9
NNW
1.5
NW
1.3
NW
0.9
NW
1.1
NW
1
NW
2.2
NW
2.3
NW
2.2
NW
1.9
NW
1.7
NW
1.5
NW
1.4
NW
1.3
NNW
1
NW
Period(s) (?)131615131413131313181618171615141413131212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)24930647263715811736125379256049760364226522790214015001067769668443273
Wind
(km/h)
20
E
25
ENE
30
ENE
40
E
40
E
35
E
35
E
35
E
30
E
30
E
25
E
20
E
25
E
20
ENE
20
ENE
25
ENE
25
E
20
E
25
E
25
E
25
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
12:20PM
0.41
2:36AM
0.75
12:39PM
0.39
3:08AM
0.76
12:54PM
0.37
3:42AM
0.76
1:00PM
0.36
4:20AM
0.75
5:00AM
0.73
5:42AM
0.71
Low Tide
/ height (m)
8:49AM
0.35
6:54PM
0.06
9:36AM
0.35
7:17PM
0.05
10:23AM
0.35
7:43PM
0.04
11:20AM
0.35
8:10PM
0.04
8:38PM
0.05
9:06PM
0.07
9:35PM
0.10
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Sunrise6:45--6:45--6:46--6:47--6:47--6:48--6:48--
Sunset-5:47--5:47--5:47--5:47--5:47--5:47--5:47-
clear
clear
thunderstorm
thunderstorm
part cloud
rain showers
part cloud
cloud
rain showers
part cloud
part cloud
cloud
cloud
rain showers
rain showers
clear
part cloud
clear
clear
clear
part cloud
Rain (mm)
--11-1--1----11------
Temp. °C252524242424252524252525252524252525252524
Feels °C (?)252522211820222221232425242622242323242322
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Turtle Bay Surf forecast

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

Turtle Bay is 23 km (14 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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