- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Secret surfForecast / Nias / Indonesia
12 Day Weather and Surf, issued 6 pm Saturday 23 Aug 2025 WIB
Best Forecast Surf Conditions for Secret this week:
The surf forecast for Secret over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 24) at 4AM. The primary swell is predicted to be 2.0m and 15s period with a secondary swell of 0.5m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Secret in the next 12 days are 2.0m 16s and forecast to arrive on Saturday (Aug 23) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 24th Aug) | 6.5ft (2.0m) 15s |
| Best Surf | 4AM (Sun 24th Aug) | 6.5ft (2.0m) 15s |
| Most Powerful | 10PM (Sat 23rd Aug) | 6.5ft (2.0m) 16s |
Table - best surf conditions forecast for Secret over the next 12 days.
Short Range Forecast Light rain (total 3mm), mostly falling on Sun afternoon. Warm (max 29°C on Mon afternoon, min 26°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Wed night. Warm (max 29°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||
Sat 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 14 | 16 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 18 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | ||
Wave (?)Graph  | |||||||||||||||||||||||
| Energy (?) | 1962 | 1955 | 1537 | 1335 | 1049 | 891 | 758 | 892 | 1057 | 1050 | 876 | 977 | 1052 | 1196 | 1283 | 1020 | 911 | 736 | 666 | 628 | 530 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | glass | on | glass | glass | cross- on | cross- off | cross- off | cross- on | glass | glass | glass | glass | glass | on | glass | cross | cross- on | cross | cross | ||
High Tide / height (m) | 6:27PM 0.61 | 6:37AM 0.83 | 7:00PM 0.66 | 7:08AM 0.81 | 7:31PM 0.70 | 7:37AM 0.76 | 8:01PM 0.72 | 8:03AM 0.70 | 8:31PM 0.72 | 8:27AM 0.63 | 9:01PM 0.69 | 8:49AM 0.55 | 9:32PM 0.65 | 9:07AM 0.48 | |||||||||
Low Tide / height (m) | 12:10AM 0.07 | 1:02PM 0.04 | 12:46AM 0.07 | 1:23PM 0.04 | 1:20AM 0.08 | 1:44PM 0.05 | 1:54AM 0.11 | 2:05PM 0.06 | 2:27AM 0.14 | 2:26PM 0.07 | 3:01AM 0.18 | 2:48PM 0.09 | 3:38AM 0.22 | ||||||||||
Sat 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | Thursday 28 | Friday 29 | |||||||||||||||||
| Sunrise | - | - | 6:28 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | ||
| Sunset | 6:36 | - | - | 6:35 | - | - | 6:35 | - | - | 6:35 | - | - | 6:34 | - | - | 6:34 | - | - | 6:34 | - | - | ||
 |  |  |  | | | | | | |  | | | | | |  | | |  | | |||
Rain (mm) | - | - | - | 1 | - | 1 | - | - | 1 | - | 3 | - | 1 | 5 | 2 | 1 | 3 | 1 | 3 | 10 | 4 | ||
| Temp. °C | 28 | 26 | 28 | 28 | 27 | 28 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 26 | ||
| Feels °C (?) | 31 | 29 | 33 | 31 | 32 | 32 | 32 | 31 | 32 | 32 | 31 | 32 | 32 | 31 | 32 | 31 | 31 | 31 | 31 | 31 | 28 | ||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Nias
Continuing clean conditions at Secret (calm at SibolgaPinangsori 169 km from Secret). 1.5m 14s groundswell from the SSW with a 0.8m 13s groundswell from the WSW and a 0.4m 7s swell from the WNW. 3 swells combining to make bigger set waves.
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 Secret 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 Secret Surf forecast
The above surf forecast table for Secret provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Secret can be found by selecting the local surf guide option on the grey menu. Our Secret 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 (Secret) 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 Secret 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 Nias? If you are looking for accommodation near Secret, camping, hotels and holiday cottages in Nias, consider staying in Afia which is 80 km (50 miles) away.
Nearest