Ranganunu Harbour surfForecast / Northland / New Zealand

information circle12 Day Weather and Surf, issued 6 pm Sunday 21 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Ranganunu Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ranganunu Harbour sea temperature is
19.3° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Ranganunu Harbour this week:

The surf forecast for Ranganunu Harbour over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 21) at 10PM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Ranganunu Harbour in the next 12 days are 1.3m 6s and forecast to arrive on Friday (Dec 26) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Friday (Dec 26) at 7PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sun 21st Dec)1.5ft (0.5m) 13s
Best Surf10PM (Sun 21st Dec)1.5ft (0.5m) 13s
Most Powerful 4PM (Fri 26th Dec)4.5ft (1.3m) 6s

Table - best surf conditions forecast for Ranganunu Harbour over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 23°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Thu night. Warm (max 24°C on Fri morning, min 16°C on Fri afternoon). Wind will be generally light.

Sun
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.5
N
0.5
N
0.4
NNE
0.4
NNE
0.4
NNE
0.3
NNE
0.3
NNE
0.3
NNE
0.5
N
0.4
NNE
0.5
N
0.4
NNE
0.4
NNE
0.4
NNE
0.3
NNE
1.3
NNW
0.3
NNE
0.5
NNE
0.5
N
0.5
NNW
0.2
NNE
Period(s) (?)13131212121514141313131212121361376612
Wave
Graph
(?)Metric surfscale
Energy kJ (?)868048474642413692598950505034973326221914
Wind
(km/h)
20
WSW
5
SSW
5
NNW
15
NW
10
WNW
20
WNW
20
WNW
15
NW
20
NW
20
WNW
5
WNW
5
SSW
10
WNW
5
NW
20
NW
25
W
15
WSW
20
WSW
20
W
15
NW
20
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
on
cross-
on
crosscrosscross-
off
crosscross-
on
cross-
on
crosscross-
off
cross-
off
crosscross-
on
cross
High Tide
/ height (m)
10:21PM
1.92
10:56AM
2.05
11:01PM
1.94
11:35AM
2.07
11:42PM
1.94
12:14PM
2.07
12:24AM
1.93
12:54PM
2.06
1:06AM
1.92
1:36PM
2.05
1:50AM
1.91
2:20PM
2.04
2:38AM
1.90
Low Tide
/ height (m)
4:00AM
0.44
4:32PM
0.57
4:41AM
0.43
5:15PM
0.54
5:23AM
0.43
5:59PM
0.52
6:05AM
0.44
6:43PM
0.50
6:49AM
0.46
7:28PM
0.48
7:35AM
0.48
8:14PM
0.46
8:24AM
0.50
Sun
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunrise--6:09--6:09--6:09--6:11--6:11--6:11--6:13
Sunset8:38--8:39--8:39--8:40--8:40--8:42--8:42--
clear
clear
part cloud
clear
part cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
rain showers
thunderstorm
rain showers
clear
clear
clear
rain showers
heavy rain
Rain (mm)
-------------212---111
Temp. °C191720221922232023232023231924211719191716
Feels °C (?)151619222020212021222123222021181514151414
  • 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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Information about the Ranganunu Harbour Surf forecast

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

Are you planning a holiday in Northland? If you are looking for accommodation near Ranganunu Harbour, camping, hotels and holiday cottages in Northland, consider staying in Houhora which is 17 km (11 miles) away.

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