Changhua wind farm zone lies in East Asia at 24.10° N, 119.90° E. Significant wave height there exceeds 2 m about 29% of the time across the whole year, roughly 9 days a month on average. The roughest month is December, with a mean significant wave height of 2.3 m and seas above 2 m about 60% of the time; the calmest is July, with a mean of 0.8 m and about 4.8% of the time above 2 m. Waves above 4 m occur about 1.6% of the time.
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Mean significant wave height and the percentage of time the significant wave height is above each level, by calendar month. The last row combines the months weighted by their length in days.
| Month | Mean Hs (m) | % above 1 m | % above 1.5 m | % above 2 m | % above 2.5 m | % above 3 m | % above 4 m |
|---|---|---|---|---|---|---|---|
| January | 2.1 | 84% | 70% | 53% | 35% | 19% | 1.7% |
| February | 1.9 | 75% | 63% | 47% | 31% | 17% | 1.8% |
| March | 1.5 | 61% | 45% | 31% | 18% | 9.1% | 0.9% |
| April | 1.1 | 44% | 27% | 16% | 8.3% | 3.7% | 0.3% |
| May | 0.9 | 31% | 14% | 6.9% | 3.0% | 0.9% | <0.1% |
| June | 0.9 | 35% | 10% | 3.7% | 1.3% | 0.4% | <0.1% |
| July | 0.8 | 26% | 10% | 4.8% | 2.5% | 1.3% | 0.4% |
| August | 0.9 | 31% | 13% | 6.5% | 3.3% | 1.9% | 0.5% |
| September | 1.3 | 53% | 33% | 20% | 10% | 5.1% | 1.0% |
| October | 2.0 | 81% | 66% | 51% | 34% | 19% | 3.8% |
| November | 2.1 | 83% | 68% | 52% | 36% | 21% | 3.7% |
| December | 2.3 | 88% | 75% | 60% | 42% | 25% | 4.6% |
| Year | 1.5 | 58% | 41% | 29% | 19% | 10% | 1.6% |
Wind at 10 m across the year: typically 8.2 m/s (16 kn), top 10% above 13.7 m/s (27 kn). Monthly means run from 5.3 m/s in August to 11.6 m/s in December.
Weather windows: a typical month fits about 20 separate 24 h periods with significant wave height below 2 m, fewest in December (about 9.6). Periods do not overlap, so a 30 day month holds at most 30.
Nearest mapped asset to the data point: Taichung LNG Terminal, LNG terminal, 51 km away. Source: Global Gas Infrastructure Tracker, Global Energy Monitor (CC BY 4.0).
Data basis: WAVERYS wave reanalysis (Copernicus Marine) + ERA5 wind, 1980-2023, 3 hourly. Data point 24.20° N, 120.00° E (0.2° grid), 15 km from the named position, 128,568 samples. Values are for the nearest grid cell and are not interpolated.
Generated using E.U. Copernicus Marine Service Information: WAVERYS global wave reanalysis [1980-2023], 3 hourly significant wave height, peak period and direction. Wind statistics from the ERA5 reanalysis (Copernicus C3S) on its 0.5 degree grid (wind, direction rose, diurnal cycle and ENSO split 1980-2024). Neither the European Commission nor ECMWF nor Mercator Ocean is responsible for any use of this information.
How the numbers are made: How it works. Other locations: all location pages.
Thrust Maritime, Sea State Explorer, Changhua wind farm zone, WAVERYS wave reanalysis (Copernicus Marine) + ERA5 wind 1980-2023, 3 hourly, page built 2026-10-23, accessed [date], https://seastate.thrustm.com/locations/changhua-wind-zone.html
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