| Tahun Data | : | 2004 |
| Nama Stasiun | : | TRMM-1517 |
| Lokasi Stasiun | : | Desa Sinaka, Kecamatan Pagai Selatan, Kepulauan Mentawai, Provinsi Sumatera Barat |
| Longitude | : | 100.375000 |
| Latitude | : | -3.125000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 52.087 | 3.833 | 0.000 | 0.450 | 1.570 | 38.407 | 13.989 | 1.294 | 3.467 | 22.198 | 5.495 | 6.525 |
| 2 | 4.856 | 0.000 | 18.890 | 80.343 | 1.781 | 0.473 | 13.722 | 1.173 | 0.777 | 18.404 | 24.170 | 0.769 |
| 3 | 0.000 | 4.962 | 31.344 | 48.632 | 19.835 | 0.000 | 10.617 | 0.000 | 8.668 | 0.000 | 3.153 | 5.263 |
| 4 | 11.697 | 0.000 | 2.335 | 12.660 | 13.254 | 0.857 | 9.434 | 1.294 | 0.000 | 0.741 | 0.000 | 0.000 |
| 5 | 6.515 | 2.288 | 4.640 | 3.390 | 51.022 | 0.000 | 79.821 | 4.724 | 0.359 | 0.000 | 3.873 | 2.862 |
| 6 | 0.000 | 1.664 | 18.920 | 6.300 | 5.042 | 7.002 | 9.257 | 33.610 | 0.000 | 1.808 | 2.672 | 11.295 |
| 7 | 0.000 | 28.110 | 35.056 | 5.010 | 2.053 | 0.000 | 61.160 | 1.354 | 28.396 | 0.000 | 3.603 | 0.031 |
| 8 | 0.000 | 6.448 | 0.000 | 1.860 | 0.000 | 17.401 | 0.000 | 0.331 | 12.644 | 0.000 | 0.931 | 15.758 |
| 9 | 3.553 | 0.446 | 0.000 | 2.880 | 0.483 | 3.900 | 9.967 | 0.000 | 14.467 | 8.506 | 8.197 | 6.432 |
| 10 | 0.207 | 0.000 | 0.150 | 7.260 | 0.000 | 5.407 | 41.966 | 0.000 | 7.831 | 9.365 | 7.056 | 15.142 |
| 11 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.059 | 0.000 | 10.522 | 9.750 | 51.373 | 1.662 |
| 12 | 71.572 | 0.000 | 8.352 | 0.000 | 16.756 | 0.000 | 7.808 | 0.000 | 0.000 | 14.196 | 25.521 | 29.915 |
| 13 | 11.016 | 0.773 | 15.088 | 19.411 | 0.000 | 0.768 | 0.030 | 3.761 | 0.538 | 0.000 | 23.209 | 9.787 |
| 14 | 0.711 | 0.000 | 0.000 | 1.560 | 0.000 | 0.000 | 10.972 | 0.000 | 0.658 | 0.000 | 0.000 | 6.094 |
| 15 | 18.182 | 0.000 | 7.604 | 2.010 | 0.000 | 0.000 | 6.240 | 0.000 | 2.242 | 12.270 | 9.608 | 10.279 |
| 16 | 11.489 | 4.338 | 18.890 | 2.880 | 0.000 | 0.000 | 42.764 | 0.000 | 0.000 | 10.165 | 6.966 | 17.112 |
| 17 | 39.265 | 14.204 | 9.011 | 4.590 | 0.000 | 0.000 | 0.000 | 0.000 | 20.206 | 72.669 | 62.392 | 14.865 |
| 18 | 51.969 | 2.437 | 0.000 | 0.330 | 0.000 | 0.000 | 0.000 | 2.257 | 67.554 | 16.152 | 18.766 | 8.895 |
| 19 | 2.606 | 12.183 | 3.024 | 9.060 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 8.947 | 18.435 |
| 20 | 22.564 | 1.842 | 7.215 | 20.461 | 1.087 | 0.000 | 0.000 | 127.368 | 0.000 | 34.853 | 31.676 | 4.370 |
| 21 | 4.886 | 10.787 | 8.053 | 4.200 | 12.076 | 0.000 | 0.000 | 0.000 | 0.000 | 50.857 | 0.000 | 0.092 |
| 22 | 7.433 | 10.668 | 0.000 | 0.810 | 27.534 | 18.022 | 0.828 | 0.000 | 2.391 | 85.324 | 0.000 | 6.217 |
| 23 | 4.205 | 0.000 | 0.060 | 29.341 | 12.831 | 0.857 | 8.133 | 0.000 | 26.005 | 0.000 | 14.382 | 7.540 |
| 24 | 0.000 | 13.223 | 0.000 | 0.750 | 0.000 | 0.000 | 0.030 | 37.973 | 16.171 | 8.061 | 18.585 | 0.431 |
| 25 | 0.326 | 1.545 | 1.108 | 15.601 | 7.336 | 4.254 | 8.872 | 0.391 | 28.217 | 45.937 | 0.000 | 20.805 |
| 26 | 36.156 | 60.886 | 0.000 | 53.672 | 30.432 | 20.651 | 5.826 | 0.933 | 35.511 | 0.000 | 0.000 | 0.000 |
| 27 | 0.000 | 23.178 | 0.000 | 4.290 | 3.502 | 1.802 | 6.743 | 1.173 | 0.957 | 3.705 | 6.365 | 11.326 |
| 28 | 2.695 | 5.765 | 0.000 | 26.641 | 2.989 | 0.000 | 31.615 | 39.989 | 18.204 | 9.928 | 25.041 | 9.972 |
| 29 | 6.100 | 16.135 | 0.000 | 0.930 | 3.351 | 6.529 | 0.000 | 0.000 | 14.527 | 30.970 | 0.000 | 20.405 |
| 30 | 32.336 | - | 0.000 | 12.120 | 0.000 | 27.315 | 2.839 | 8.997 | 0.000 | 9.839 | 1.713 | 9.387 |
| 31 | 76.979 | - | 0.000 | - | 16.578 | - | 13.885 | 10.696 | - | 69.989 | - | 9.818 |
| Total | 479.41 | 225.72 | 189.74 | 377.44 | 229.51 | 153.65 | 396.58 | 277.32 | 320.31 | 545.69 | 363.69 | 281.48 |
| Hari Hujan | 24.00 | 21.00 | 17.00 | 28.00 | 19.00 | 15.00 | 24.00 | 17.00 | 22.00 | 22.00 | 23.00 | 29.00 |
| Max | 76.979 | 60.886 | 35.056 | 80.343 | 51.022 | 38.407 | 79.821 | 127.368 | 67.554 | 85.324 | 62.392 | 29.915 |
| Avg | 15.46 | 7.78 | 6.12 | 12.58 | 7.40 | 5.12 | 12.79 | 8.95 | 10.68 | 17.60 | 12.12 | 9.08 |
Berdasarkan data hujan TRMM di Grid TRMM-1517, yang terletak di Desa Sinaka, Kecamatan Pagai Selatan, Kepulauan Mentawai, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 2004 adalah sebesar 3,840.53 mm. Dengan jumlah hari hujan tahunan adalah 261 hari (71.51%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 127.37 mm yang terjadi pada tanggal 20 Agustus 2004.
