| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-1273 |
| Lokasi Stasiun | : | Desa Sungai Sirah, Kecamatan Silaut, Pesisir Selatan, Provinsi Sumatera Barat |
| Longitude | : | 101.125000 |
| Latitude | : | -2.375000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 18.329 | 0.000 | 0.000 | 0.000 | 17.172 | 0.000 | 4.248 | 0.000 | 0.000 | 1.974 | 0.000 | 0.000 |
| 2 | 37.418 | 0.662 | 0.356 | 0.000 | 0.000 | 0.000 | 1.905 | 0.000 | 5.444 | 0.000 | 16.316 | 13.062 |
| 3 | 0.000 | 28.622 | 87.221 | 0.000 | 0.590 | 0.000 | 9.393 | 0.914 | 1.789 | 5.156 | 0.000 | 24.530 |
| 4 | 0.000 | 3.598 | 0.000 | 0.000 | 3.601 | 0.000 | 4.248 | 1.848 | 3.772 | 48.655 | 5.376 | 2.867 |
| 5 | 5.454 | 7.280 | 15.007 | 0.000 | 9.562 | 0.000 | 0.000 | 13.506 | 0.000 | 0.000 | 5.300 | 29.309 |
| 6 | 1.243 | 0.000 | 14.952 | 41.271 | 9.486 | 0.496 | 6.175 | 0.000 | 0.000 | 3.746 | 31.761 | 0.000 |
| 7 | 0.207 | 0.000 | 3.697 | 9.331 | 11.559 | 21.854 | 0.701 | 1.181 | 0.000 | 6.082 | 5.754 | 7.765 |
| 8 | 0.000 | 0.000 | 20.676 | 0.000 | 11.438 | 0.000 | 4.861 | 23.031 | 8.516 | 0.000 | 1.741 | 0.956 |
| 9 | 2.209 | 0.000 | 0.986 | 7.686 | 1.891 | 0.000 | 34.706 | 0.000 | 16.799 | 13.211 | 0.000 | 28.672 |
| 10 | 0.000 | 0.000 | 4.272 | 5.592 | 0.000 | 3.307 | 5.474 | 5.829 | 16.371 | 44.185 | 0.379 | 7.248 |
| 11 | 0.207 | 3.185 | 29.850 | 43.035 | 2.027 | 47.345 | 0.219 | 4.991 | 0.000 | 32.383 | 26.916 | 0.000 |
| 12 | 10.942 | 1.696 | 5.532 | 6.430 | 2.451 | 0.496 | 11.496 | 5.563 | 1.244 | 18.085 | 58.374 | 1.951 |
| 13 | 20.331 | 2.895 | 1.123 | 0.000 | 2.254 | 0.000 | 0.635 | 8.077 | 0.272 | 0.201 | 11.622 | 15.730 |
| 14 | 15.809 | 0.000 | 36.477 | 0.000 | 6.279 | 0.248 | 6.328 | 0.000 | 4.044 | 23.885 | 27.976 | 0.000 |
| 15 | 33.000 | 29.904 | 0.000 | 0.000 | 23.043 | 0.000 | 3.963 | 4.705 | 0.000 | 14.580 | 3.521 | 0.000 |
| 16 | 7.076 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 3.350 | 0.000 | 0.000 | 18.326 | 18.739 | 0.000 |
| 17 | 15.602 | 0.083 | 2.547 | 0.000 | 0.000 | 0.000 | 0.569 | 17.888 | 77.463 | 3.826 | 0.189 | 1.155 |
| 18 | 57.094 | 18.199 | 0.767 | 11.215 | 1.997 | 0.248 | 9.985 | 8.058 | 9.527 | 6.686 | 9.956 | 0.717 |
| 19 | 18.675 | 4.095 | 1.780 | 0.000 | 0.000 | 0.000 | 0.000 | 1.105 | 2.178 | 8.176 | 39.597 | 14.177 |
| 20 | 9.493 | 16.875 | 0.000 | 0.000 | 2.406 | 0.000 | 0.000 | 1.429 | 33.793 | 12.486 | 0.189 | 8.482 |
| 21 | 14.843 | 4.922 | 0.000 | 0.000 | 2.224 | 18.932 | 0.000 | 0.000 | 15.982 | 6.847 | 12.227 | 9.000 |
| 22 | 5.040 | 12.698 | 0.000 | 0.000 | 0.000 | 33.731 | 0.000 | 2.629 | 7.583 | 1.692 | 0.000 | 58.300 |
| 23 | 3.452 | 13.484 | 2.574 | 0.000 | 0.560 | 3.555 | 0.000 | 5.258 | 0.000 | 40.761 | 5.186 | 31.181 |
| 24 | 6.351 | 12.160 | 0.000 | 2.542 | 8.110 | 13.063 | 0.000 | 4.763 | 0.000 | 12.969 | 1.741 | 17.601 |
| 25 | 4.177 | 21.839 | 3.095 | 1.525 | 1.210 | 29.542 | 5.584 | 18.002 | 11.860 | 25.053 | 1.476 | 24.371 |
| 26 | 4.936 | 25.313 | 2.328 | 3.978 | 0.000 | 3.886 | 0.000 | 0.000 | 14.855 | 39.029 | 5.148 | 0.000 |
| 27 | 6.317 | 2.399 | 16.458 | 2.004 | 0.000 | 0.965 | 0.000 | 21.831 | 4.511 | 20.944 | 3.899 | 14.177 |
| 28 | 0.587 | 9.265 | 0.000 | 18.572 | 0.000 | 3.693 | 0.000 | 0.000 | 0.000 | 0.000 | 5.489 | 37.911 |
| 29 | 6.800 | - | 0.000 | 2.363 | 0.000 | 3.803 | 0.000 | 0.838 | 19.093 | 35.807 | 19.874 | 0.239 |
| 30 | 26.200 | - | 1.287 | 3.708 | 0.000 | 0.386 | 0.000 | 7.791 | 0.000 | 6.364 | 5.035 | 4.659 |
| 31 | 0.380 | - | 0.630 | - | 0.000 | - | 0.000 | 2.419 | - | 18.649 | - | 6.571 |
| Total | 332.17 | 219.17 | 251.62 | 159.25 | 117.86 | 185.55 | 113.84 | 161.66 | 255.10 | 469.76 | 323.78 | 360.63 |
| Hari Hujan | 27.00 | 20.00 | 21.00 | 14.00 | 19.00 | 17.00 | 18.00 | 22.00 | 19.00 | 27.00 | 26.00 | 24.00 |
| Max | 57.094 | 29.904 | 87.221 | 43.035 | 23.043 | 47.345 | 34.706 | 23.031 | 77.463 | 48.655 | 58.374 | 58.300 |
| Avg | 10.72 | 7.83 | 8.12 | 5.31 | 3.80 | 6.19 | 3.67 | 5.21 | 8.50 | 15.15 | 10.79 | 11.63 |
Berdasarkan data hujan TRMM di Grid TRMM-1273, yang terletak di Desa Sungai Sirah, Kecamatan Silaut, Pesisir Selatan, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 2,950.39 mm. Dengan jumlah hari hujan tahunan adalah 254 hari (69.59%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 87.22 mm yang terjadi pada tanggal 3 Maret 1999.
