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Green Bay surfForecast / North / Taiwan
12 Day Weather and Surf, issued 1 am Friday 23 May 2025 CST
Best Forecast Surf Conditions for Green Bay this week:
The surf forecast for Green Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (May 29) at 11AM. The primary swell is predicted to be 3ft and 7s period with a secondary swell of 0ft and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Green Bay in the next 12 days are 5ft 8s and forecast to arrive on Sunday (May 25) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7ft 8s period and expected on Saturday (May 24) at 11PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Thu 29th May) | 3.5ft (1.0m) 7s |
| Best Surf | 11AM (Thu 29th May) | 3.5ft (1.0m) 7s |
| Most Powerful | 2PM (Sun 25th May) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Green Bay over the next 12 days.
Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 01 | Monday 02 | Tuesday 03 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (ft) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 9 | 9 | 9 | 9 | 10 | 8 | 10 | 10 | 7 | 9 | 9 | 9 | 6 | 5 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 10 | 6 | 6 | 6 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 47 | 47 | 44 | 29 | 45 | 29 | 32 | 306 | 30 | 29 | 115 | 42 | 40 | 79 | 43 | 83 | 107 | 99 | 102 | 99 | 305 | 358 | 496 | 412 | 454 | 436 | 365 | 352 | 313 | 151 | 99 | 106 | 124 | 73 | 36 | 21 |
Wind (mph) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | glass | cross- off | on | on | on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | on | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | on | on | cross- on | on | cross- on | on |
High Tide / height (ft) | 6:41PM 3.54 | 6:34AM 3.77 | 7:48PM 3.9 | 7:09AM 3.71 | 8:51PM 4.23 | 7:45AM 3.64 | 9:51PM 4.49 | 8:24AM 3.61 | 10:49PM 4.59 | 9:07AM 3.58 | 11:47PM 4.59 | 9:53AM 3.51 | 12:45AM 4.49 | 10:46AM 3.41 | 1:41AM 4.36 | 11:46AM 3.28 | 2:35AM 4.2 | 12:56PM 3.15 | 3:24AM 4.04 | 2:15PM 3.02 | 4:08AM 3.87 | 3:37PM 2.99 | 4:46AM 3.74 | |||||||||||||
Low Tide / height (ft) | 12:14PM 1.41 | 12:18AM 1.74 | 12:56PM 0.92 | 1:22AM 2.03 | 1:40PM 0.43 | 2:26AM 2.3 | 2:27PM 0.07 | 3:28AM 2.53 | 3:15PM -0.16 | 4:28AM 2.72 | 4:06PM -0.26 | 5:29AM 2.82 | 4:58PM -0.16 | 6:32AM 2.89 | 5:53PM 0.03 | 7:38AM 2.82 | 6:48PM 0.36 | 8:45AM 2.69 | 7:44PM 0.72 | 9:49AM 2.49 | 8:41PM 1.12 | 10:42AM 2.23 | 9:38PM 1.48 | |||||||||||||
Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 01 | Monday 02 | Tuesday 03 | |||||||||||||||||||||||||
| Sunrise | 5:05 | - | - | 5:05 | - | - | 5:05 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - | 5:01 | - | - |
| Sunset | - | 6:34 | - | - | 6:35 | - | - | 6:35 | - | - | 6:36 | - | - | 6:36 | - | - | 6:37 | - | - | 6:37 | - | - | 6:37 | - | - | 6:37 | - | - | 6:38 | - | - | 6:38 | - | - | 6:39 | - |
 |  |  |  |  |  |  | | | | |  | | | | | | | | | | | |  | | | | |  |  | | | | | | | |
Rain (in) | - | - | 0.4 | 0.7 | 0.3 | 0.0 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | - | - | - | 0.1 | 0.1 | 0.1 | 0.2 | 0.6 | 0.6 | 0.3 | 0.1 | 0.1 | 0.0 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °F | 84 | 84 | 82 | 72 | 72 | 73 | 73 | 72 | 72 | 66 | 68 | 72 | 75 | 77 | 77 | 75 | 75 | 75 | 75 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 75 | 77 | 75 | 77 | 77 | 75 | 77 | 79 | 77 |
| Feels °F (?) | 91 | 91 | 90 | 68 | 70 | 68 | 68 | 68 | 66 | 63 | 68 | 72 | 75 | 75 | 75 | 75 | 77 | 82 | 79 | 72 | 70 | 70 | 68 | 72 | 73 | 72 | 73 | 75 | 73 | 73 | 77 | 77 | 77 | 79 | 79 | 77 |
Short Range Forecast: Heavy rain (total 1.8in), heaviest during Sat morning. Warm (max 84°F on Fri morning, min 66°F on Sun night). Winds increasing (calm on Fri morning, fresh winds from the NNE by Fri night). | Days 3-6 Weather Summary Heavy rain (total 0.9in), heaviest during Mon morning. Warm (max 77°F on Tue afternoon, min 66°F on Mon morning). Wind will be generally light. | Days 6-9 Weather Summary Heavy rain (total 1.8in), heaviest during Thu afternoon. Warm (max 75°F on Thu morning, min 72°F on Thu night). Winds decreasing (fresh winds from the NNW on Thu night, light winds from the E by Sat night). | Long Range Forecast: Mostly dry. Warm (max 79°F on Tue afternoon, min 75°F on Sun morning). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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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 Green Bay 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 Green Bay Surf forecast
The above surf forecast table for Green Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Green Bay can be found by selecting the local surf guide option on the grey menu. Our Green 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 (Green 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 Green 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.
Green Bay is 15 km (9 miles) from the city of Keelung. If you plan a holiday in North Taiwan, look for hotels and other accommodation in Keelung. Keelung has rooms for a wide range of budgets as well as car hire and transport links.
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