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The Rock surfForecast / West / Sri Lanka
12 Day Weather and Surf, issued 4 pm Saturday 20 Dec 2025 +0530Forecast update in hr min s Forecast update imminent
The Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Rock sea temperature is
28.0° C
(Which is normal for this time of year)Best Forecast Surf Conditions for The Rock this week:
The surf forecast for The Rock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 20) at 11PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.5m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Rock in the next 12 days are 1.0m 17s and forecast to arrive on Friday (Dec 26) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Saturday (Dec 27) at 8PM.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 20th Dec) | 3ft (0.9m) 10s |
| Best Surf | 8PM (Thu 25th Dec) | 2.5ft (0.7m) 19s |
| Most Powerful | 11AM (Fri 26th Dec) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for The Rock over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 10mm), heaviest on Sat afternoon. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Some drizzle, heaviest during Tue afternoon. Warm (max 26°C on Tue afternoon, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||
Sat 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 9 | 16 | 16 | 15 | 21 | 20 | 19 | 17 | 16 | 16 | 15 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 135 | 162 | 128 | 125 | 92 | 85 | 90 | 65 | 66 | 92 | 43 | 99 | 98 | 121 | 148 | 223 | 398 | 576 | 380 | 475 | 309 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- on | cross- on | off | cross- on | cross- on | glass | glass | glass | cross- off | glass | glass | glass | glass | on | glass | on | glass | glass | cross- on | ||
High Tide / height (m) | 2:47PM 0.42 | 2:48AM 0.55 | 3:18PM 0.43 | 3:18AM 0.55 | 3:49PM 0.43 | 3:47AM 0.54 | 4:23PM 0.43 | 4:18AM 0.53 | 4:58PM 0.43 | 4:49AM 0.50 | 5:38PM 0.42 | 5:23AM 0.45 | 6:25PM 0.42 | 6:01AM 0.40 | |||||||||
Low Tide / height (m) | 8:29PM 0.10 | 9:19AM 0.05 | 9:00PM 0.10 | 9:49AM 0.04 | 9:31PM 0.10 | 10:19AM 0.04 | 10:04PM 0.11 | 10:50AM 0.05 | 10:40PM 0.13 | 11:22AM 0.06 | 11:22PM 0.16 | 11:56AM 0.08 | 12:14AM 0.19 | 12:34PM 0.11 | |||||||||
Sat 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||||
| Sunrise | - | - | 6:11 | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:15 | - | - | 6:15 | ||
| Sunset | 5:59 | - | - | 5:59 | - | - | 6:00 | - | - | 6:00 | - | - | 6:00 | - | - | 6:00 | - | - | 6:01 | - | - | ||
 |  | |  |  |  | | |  | | | | |  | | | | | | | | |||
Rain (mm) | 4 | 3 | 2 | - | - | - | 1 | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 26 | 25 | 26 | 26 | 26 | 25 | 26 | 25 | 26 | 26 | 25 | 27 | ||
| Feels °C (?) | 31 | 29 | 29 | 29 | 31 | 30 | 30 | 31 | 31 | 30 | 28 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 30 | ||
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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 The Rock 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.
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Information about the The Rock Surf forecast
The above surf forecast table for The Rock provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at The Rock can be found by selecting the local surf guide option on the grey menu. Our The Rock 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 (The Rock) 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 The Rock 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.
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