| Tahun Data | : | 2009 |
| Nama Stasiun | : | TRMM-0405 |
| Lokasi Stasiun | : | Desa Koto Nopan, Kecamatan Rao Utara, Pasaman, Provinsi Sumatera Barat |
| Longitude | : | 99.875000 |
| Latitude | : | 0.875000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 3.707 | 15.272 | 6.206 | 1.455 | 18.751 | 0.220 | 0.000 | 0.000 | 15.746 | 0.000 | 3.656 | 11.293 |
| 2 | 17.843 | 8.416 | 12.991 | 0.000 | 3.301 | 17.022 | 0.000 | 0.000 | 0.616 | 1.458 | 34.962 | 18.214 |
| 3 | 0.000 | 3.639 | 0.000 | 70.984 | 20.065 | 12.964 | 1.311 | 0.000 | 23.985 | 8.095 | 8.312 | 27.132 |
| 4 | 0.000 | 1.188 | 11.196 | 3.911 | 0.000 | 0.000 | 0.000 | 0.000 | 6.930 | 4.345 | 22.994 | 22.905 |
| 5 | 0.000 | 0.000 | 8.306 | 15.289 | 0.000 | 0.000 | 0.000 | 1.538 | 1.424 | 0.000 | 10.883 | 11.467 |
| 6 | 1.236 | 0.000 | 6.480 | 37.140 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 1.786 | 41.704 | 2.403 |
| 7 | 63.512 | 0.000 | 0.000 | 8.792 | 2.532 | 2.240 | 4.918 | 0.000 | 3.465 | 0.000 | 2.628 | 43.464 |
| 8 | 9.737 | 0.000 | 1.369 | 0.420 | 14.007 | 0.000 | 5.016 | 0.000 | 23.715 | 0.000 | 15.653 | 9.006 |
| 9 | 7.117 | 2.846 | 2.647 | 45.932 | 1.763 | 0.000 | 3.148 | 0.000 | 0.000 | 0.000 | 11.568 | 23.310 |
| 10 | 0.000 | 0.000 | 36.356 | 11.378 | 19.007 | 0.000 | 13.443 | 20.779 | 5.197 | 0.000 | 38.247 | 0.000 |
| 11 | 0.000 | 2.376 | 18.710 | 0.000 | 0.000 | 0.000 | 0.000 | 48.851 | 11.742 | 0.000 | 0.000 | 0.174 |
| 12 | 0.000 | 0.000 | 22.422 | 17.035 | 0.000 | 0.643 | 6.066 | 9.995 | 21.290 | 7.827 | 38.333 | 1.216 |
| 13 | 0.000 | 0.000 | 37.694 | 1.034 | 11.699 | 10.173 | 0.000 | 11.574 | 5.505 | 27.349 | 34.705 | 13.668 |
| 14 | 0.000 | 0.000 | 12.108 | 15.516 | 0.032 | 11.403 | 0.689 | 0.000 | 17.979 | 2.559 | 0.000 | 13.928 |
| 15 | 0.000 | 0.000 | 20.962 | 0.808 | 0.000 | 1.744 | 1.475 | 0.000 | 2.926 | 7.410 | 52.101 | 0.000 |
| 16 | 0.000 | 0.000 | 21.479 | 0.000 | 0.000 | 0.349 | 0.000 | 30.607 | 0.000 | 29.998 | 4.142 | 9.266 |
| 17 | 0.000 | 0.916 | 12.595 | 4.267 | 1.378 | 0.000 | 0.000 | 41.121 | 83.080 | 15.267 | 5.341 | 2.722 |
| 18 | 0.000 | 0.000 | 21.205 | 1.293 | 0.000 | 0.000 | 0.000 | 10.784 | 77.613 | 4.732 | 30.078 | 39.468 |
| 19 | 0.000 | 24.108 | 48.647 | 10.053 | 0.000 | 2.699 | 0.000 | 4.177 | 7.892 | 32.378 | 18.024 | 1.419 |
| 20 | 0.000 | 0.000 | 38.820 | 5.463 | 0.000 | 3.673 | 0.000 | 9.621 | 3.850 | 13.094 | 2.999 | 0.000 |
| 21 | 0.000 | 1.757 | 5.172 | 0.970 | 0.000 | 6.262 | 6.721 | 5.943 | 5.659 | 12.350 | 0.000 | 0.000 |
| 22 | 0.000 | 15.198 | 3.894 | 4.428 | 0.000 | 6.243 | 0.000 | 3.906 | 0.000 | 1.101 | 0.000 | 0.000 |
| 23 | 0.000 | 22.500 | 26.286 | 0.000 | 0.000 | 1.432 | 0.000 | 18.327 | 0.000 | 3.750 | 0.000 | 0.000 |
| 24 | 0.000 | 67.375 | 0.000 | 0.000 | 0.000 | 0.294 | 0.000 | 9.454 | 0.000 | 41.872 | 0.000 | 0.579 |
| 25 | 59.854 | 22.648 | 0.000 | 0.356 | 0.000 | 21.668 | 14.492 | 54.503 | 0.000 | 0.000 | 0.000 | 3.793 |
| 26 | 0.000 | 40.965 | 31.792 | 0.000 | 1.378 | 7.602 | 6.131 | 1.226 | 0.000 | 127.013 | 0.000 | 25.656 |
| 27 | 0.000 | 2.376 | 2.860 | 0.323 | 0.000 | 15.021 | 0.525 | 54.710 | 0.000 | 2.708 | 0.000 | 20.994 |
| 28 | 0.000 | 2.030 | 26.833 | 4.816 | 0.000 | 0.000 | 31.279 | 0.000 | 5.120 | 23.986 | 5.484 | 35.298 |
| 29 | 50.513 | - | 9.675 | 3.976 | 0.000 | 0.514 | 16.951 | 8.706 | 4.158 | 12.826 | 1.800 | 1.071 |
| 30 | 6.870 | - | 19.745 | 8.146 | 0.000 | 0.000 | 0.000 | 13.236 | 0.000 | 17.737 | 31.878 | 0.434 |
| 31 | 18.238 | - | 3.894 | - | 0.000 | - | 0.000 | 1.932 | - | 14.820 | - | 6.457 |
| Total | 238.63 | 233.61 | 470.34 | 273.79 | 93.91 | 122.17 | 112.17 | 360.99 | 327.89 | 414.46 | 415.49 | 345.34 |
| Hari Hujan | 10.00 | 16.00 | 27.00 | 24.00 | 11.00 | 19.00 | 14.00 | 20.00 | 20.00 | 23.00 | 21.00 | 25.00 |
| Max | 63.512 | 67.375 | 48.647 | 70.984 | 20.065 | 21.668 | 31.279 | 54.710 | 83.080 | 127.013 | 52.101 | 43.464 |
| Avg | 7.70 | 8.34 | 15.17 | 9.13 | 3.03 | 4.07 | 3.62 | 11.64 | 10.93 | 13.37 | 13.85 | 11.14 |
Berdasarkan data hujan TRMM di Grid TRMM-0405, yang terletak di Desa Koto Nopan, Kecamatan Rao Utara, Pasaman, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 2009 adalah sebesar 3,408.78 mm. Dengan jumlah hari hujan tahunan adalah 230 hari (63.01%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 127.01 mm yang terjadi pada tanggal 26 Oktober 2009.
