Surf Forecasts:
Green Room surf forecast from 8 Sep 2026:
- Most powerful swell: Tuesday 15 Sep, 8AM (local time) - 5.5ft (1.7m), 15s period, SSW swell with 1,310 kJ wave energy.
Best Forecast Surf Conditions for Green Room this week:
The most powerful waves expected at Green Room in the next 16 days are 1.7m 15s and forecast to arrive on Tuesday (Sep 15) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Tue 15th Sep) | 5.5ft (1.7m) 15s |
Table - best surf conditions forecast for Green Room over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's cooking for the Green Room.
To be straight with you, the next couple of weeks are looking grim. The wind is stuck on a southwest flow, which is the exact opposite of what this reef needs to clean up. For days on end, we're looking at poor surf with a zero score. The water is a warm 84°, right on average for the season, so at least the temperature isn't a problem.
The first sign of life doesn't show up until the afternoon of Monday, September 14th. The swell jumps to 7ft from the south-southwest, but it's a short-period windswell at 9 seconds, and the wind is just cross-shore. It's a marginal call, and with that much energy (1442) and messy conditions, it's more of a kite session than a surf session.
We're back to waiting until Wednesday, September 16th. The morning is a mess, but the afternoon shows a glimmer of hope. The wind drops to 12 mph from the southwest, still cross-shore, but the swell period stretches out to 17 seconds. The wave height is a modest 4ft from the south-southwest, but that long-period groundswell energy (1145) might just offer a few clean lines if the wind plays nice. It's still a marginal call, but it's the best we've got.
The pattern of cross-shore winds and lumpy seas continues. Sunday, September 20th sees another bump in the afternoon, with a 4ft, 15-second swell from the south-southwest, but the wind is still cross-shore, creating a lumpy cross-chop. Another marginal one.
The best bet, if you're keen, is that afternoon of September 16th. The lighter wind, even if cross-shore, and the long-period energy make it the least messy window. It's not going to be epic, but it's the most likely spot to find a few rideable waves.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue night. Warm (max 32°C on Wed morning, min 26°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 32°C on Fri morning, min 26°C on Fri night). Winds decreasing (strong winds from the SSW on Fri afternoon, light winds from the SW by Sat night). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSW 6 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 15 | SSW 15 | SSW 19 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 9 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 199 | 208 | 166 | 174 | 182 | 246 | 448 | 647 | 696 | 525 | 485 | 716 | 575 | 1152 | 1138 | 793 | 662 | 491 | 318 | 732 | 558 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross |
High Tide | 2:43PM0.15m | 3:49AM0.23m | 3:03PM0.15m | 4:02AM0.23m | 3:22PM0.15m | 4:12AM0.23m | 3:40PM0.15m | 4:19AM0.22m | 3:57PM0.15m | 4:21AM0.21m | 4:14PM0.14m | 4:19AM0.20m | 4:30PM0.14m | 4:12AM0.20m | |||||||
Low Tide | 9:56AM0.08m | 8:50PM0.02m | 10:11AM0.08m | 9:04PM0.02m | 10:26AM0.07m | 9:18PM0.02m | 10:38AM0.07m | 9:29PM0.03m | 10:47AM0.07m | 9:39PM0.05m | 10:52AM0.07m | 9:45PM0.06m | 10:55AM0.06m | 9:45PM0.08m | |||||||
 |  |  | | |  | | |  | | | | | | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 6:06 | — | — | 6:06 | — | — | 6:05 | — | — | 6:05 | — | — | 6:04 | — | — | 6:04 | — | — | 6:02 | — |
mm | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 31 | 30 | 28 | 32 | 31 | 28 | 32 | 31 | 28 | 32 | 32 | 28 | 32 | 31 | 28 | 32 | 30 | 27 | 31 | 32 | 28 |
Feels °C | 30 | 29 | 28 | 31 | 30 | 27 | 30 | 29 | 27 | 31 | 29 | 27 | 32 | 30 | 27 | 31 | 28 | 26 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | SSE 10 | SSE 9 | SSW 17 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 15 |
| kJ | 199 | 205 | 166 | 166 | 150 | 154 | 148 | 647 | 696 | 525 | 485 | 485 | 575 | 1152 | 1138 | 793 | 662 | 491 | 318 | 669 | 558 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SE 9 | SE 9 | SE 9 | SSW 18 | SSW 18 | SE 9 | SE 9 | SE 9 | SSE 9 | SSW 19 | SSW 19 | SE 9 | SSE 10 | SSE 10 | SSE 9 | SE 9 | S 18 | SE 9 | SE 9 |
| kJ | 155 | 208 | 59 | 101 | 99 | 246 | 448 | 97 | 83 | 79 | 108 | 716 | 528 | 86 | 80 | 61 | 56 | 37 | 232 | 21 | 20 |
Swell 3 Height (m) Direction Period (s) | S 13 | SE 9 | S 17 | SSW 15 | SSW 14 | ESE 10 | SSW 13 | SSE 14 | SSE 13 | SSW 21 | SSW 21 | SSE 10 | SE 9 | — | — | SSE 10 | — | S 19 | SE 9 | SE 9 | — |
| kJ | 31 | 36 | 140 | 174 | 82 | 61 | 69 | 68 | 70 | 260 | 359 | 117 | 86 | — | — | 81 | — | 176 | 38 | 20 | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 6 | SW 6 | SSW 6 | SSW 7 | SW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 9 | SSW 10 |
| kJ | 32 | 169 | 39 | 28 | 182 | 49 | 47 | 200 | 39 | 41 | 190 | 80 | 70 | 247 | 80 | 49 | 200 | 193 | 211 | 732 | 386 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 631 | 930 | 931 | 32 | 1044 | 34 | 631 | 1044 | 34 | 32 | 1044 | 34 | 34 | 1044 | 27 | 32 | 1044 | 34 | 631 | 32 | 34 |
Best forecast wave conditions in East Sri Lanka | |||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | |||||||||||||||||||||
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Information about the Green Room Surf forecast
The above surf forecast table for Green Room provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Green Room can be found by selecting the local surf guide option on the grey menu. Our Green Room 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 (Green Room) 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 Green Room 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.
Green Room is 75 km (47 miles) from Ampara. If you plan a holiday in East Sri Lanka, look for hotels and other accommodation in Ampara. Ampara has rooms for a wide range of budgets as well as car hire and transport links.
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