Waimanu Bay Surf Break

Lat Long: 20.15° N 155.64° W

Waimanu Bay Surf Forecast and Surf Report

Issued: 7 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Waimanu Bay sea temperature is
27.3°C
0.6° 

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


Waimanu Bay surf forecast from 1 Sep 2026:

  • Most powerful swell: Saturday 5 Sep, 5PM (local time) - 7.5ft (2.3m), 14s period, ENE swell with 1,998 kJ wave energy.

Best Forecast Surf Conditions for Waimanu Bay this week:

The most powerful waves expected at Waimanu Bay in the next 16 days are 2.3m 14s and forecast to arrive on Saturday (Sep 05) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 12s period and expected on Tuesday (Sep 08) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Sat 5th Sep)7.5ft (2.3m) 14s

Table - best surf conditions forecast for Waimanu Bay over the next 16 days.


Short Range Forecast

Some drizzle, heaviest during Tue morning. Warm (max 27°C on Tue morning, min 25°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Fri morning, min 25°C on Fri morning). Wind will be generally light.

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
0
0
0
0
0
0
2
1
3
3
2
2
3
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
ENE
8
1.7
ENE
8
2
ENE
8
2.2
ENE
8
2
ENE
8
1.9
ENE
8
2
E
8
1.9
ENE
8
1.1
E
14
2
E
14
2.2
ENE
14
2.1
ENE
13
2.1
ENE
13
2.3
ENE
14
2.3
ENE
13
2.3
ENE
12
2.3
ENE
12
2.2
ENE
12
2
ENE
12
1.7
ENE
11
1.5
ENE
11
Wave Graph
Metric surfscale
Energy kJ
403
365
527
599
497
416
446
385
458
1576
1765
1496
1430
1998
1750
1556
1530
1361
1024
662
543
Wind (km/h)
25
ENE
25
ENE
25
E
30
E
25
E
25
E
30
E
30
E
30
E
25
E
20
E
20
E
15
ENE
10
NE
10
E
10
ENE
15
ENE
10
E
10
ENE
15
E
15
ESE
Wind State
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross
cross
High Tide
4:48PM0.63m
6:51AM0.74m
5:07PM0.56m
8:21AM0.74m
10:04AM0.78m
11:22AM0.83m
10:13PM0.40m
12:16PM0.89m
11:45PM0.45m
12:59PM0.93m
00:43AM0.52m
Low Tide
11:37AM0.40m
11:30PM0.14m
12:56PM0.47m
00:14AM0.15m
1:19AM0.17m
2:52AM0.18m
7:10PM0.37m
4:24AM0.16m
7:25PM0.32m
5:35AM0.13m
7:47PM0.28m
rain showers
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:37
6:36
6:35
6:34
6:32
6:31
 mm
1
1
1
Temp °C
27
27
26
27
27
26
27
26
25
27
27
25
27
27
26
27
27
26
27
27
26
Feels °C
27
27
27
26
26
25
25
24
24
26
27
25
28
29
28
29
30
29
30
30
29
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Waimanu Bay Surf forecast

The above surf forecast table for Waimanu Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waimanu Bay can be found by selecting the local surf guide option on the grey menu. Our Waimanu 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 (Waimanu 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 Waimanu 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.

Waimanu Bay is 74 km (46 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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