| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-0905 |
| Lokasi Stasiun | : | Desa Muaro Aie, Kecamatan Iv Nagari Bayang Utara, Pesisir Selatan, Provinsi Sumatera Barat |
| Longitude | : | 100.625000 |
| Latitude | : | -1.125000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 3.856 | 2.238 | 1.651 | 0.000 | 27.891 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 7.897 | 0.000 |
| 2 | 7.827 | 10.929 | 0.138 | 0.000 | 3.671 | 0.000 | 0.165 | 0.000 | 32.250 | 1.183 | 3.724 | 14.219 |
| 3 | 0.000 | 4.082 | 21.915 | 0.000 | 34.554 | 1.475 | 0.729 | 0.253 | 4.504 | 9.270 | 0.000 | 49.260 |
| 4 | 0.000 | 0.000 | 1.651 | 0.000 | 1.541 | 12.480 | 12.980 | 4.109 | 22.070 | 7.396 | 4.092 | 0.000 |
| 5 | 0.000 | 0.000 | 3.131 | 34.154 | 9.398 | 18.342 | 3.598 | 13.453 | 0.000 | 0.000 | 0.000 | 63.682 |
| 6 | 0.000 | 3.687 | 0.826 | 51.814 | 5.273 | 1.690 | 11.969 | 19.192 | 9.324 | 4.783 | 0.000 | 0.000 |
| 7 | 0.000 | 0.000 | 0.000 | 2.236 | 32.121 | 7.445 | 3.457 | 1.492 | 0.000 | 0.000 | 6.956 | 9.192 |
| 8 | 0.000 | 41.147 | 14.759 | 0.000 | 1.012 | 1.439 | 4.233 | 0.000 | 0.000 | 11.538 | 2.046 | 4.418 |
| 9 | 4.777 | 0.000 | 15.035 | 2.852 | 4.125 | 0.000 | 21.186 | 0.000 | 9.639 | 4.881 | 6.792 | 7.160 |
| 10 | 0.000 | 0.000 | 0.000 | 3.111 | 3.037 | 0.000 | 6.749 | 2.273 | 0.766 | 12.672 | 0.696 | 5.840 |
| 11 | 0.000 | 0.000 | 26.663 | 9.883 | 10.954 | 37.368 | 17.871 | 0.436 | 0.000 | 22.977 | 10.598 | 0.000 |
| 12 | 0.000 | 3.160 | 2.477 | 0.000 | 0.000 | 0.000 | 2.140 | 1.469 | 0.901 | 6.410 | 35.967 | 3.707 |
| 13 | 51.909 | 7.505 | 68.774 | 0.000 | 4.654 | 0.000 | 0.000 | 10.606 | 0.450 | 1.923 | 16.449 | 23.462 |
| 14 | 0.000 | 3.687 | 3.853 | 0.000 | 15.456 | 0.000 | 6.302 | 1.837 | 0.000 | 11.982 | 65.673 | 0.000 |
| 15 | 41.205 | 42.135 | 1.892 | 0.000 | 37.017 | 12.768 | 3.292 | 4.660 | 2.432 | 7.495 | 0.000 | 1.625 |
| 16 | 41.032 | 0.000 | 1.617 | 0.000 | 6.572 | 0.000 | 1.199 | 3.375 | 0.946 | 11.587 | 11.580 | 0.000 |
| 17 | 0.806 | 1.975 | 0.275 | 1.005 | 0.000 | 0.000 | 0.447 | 1.446 | 14.684 | 0.000 | 1.678 | 16.911 |
| 18 | 9.611 | 4.016 | 9.117 | 2.657 | 0.000 | 0.000 | 0.000 | 2.778 | 7.162 | 22.238 | 9.166 | 28.743 |
| 19 | 3.856 | 2.238 | 12.179 | 0.000 | 0.000 | 2.518 | 0.000 | 12.305 | 10.855 | 15.039 | 23.405 | 0.000 |
| 20 | 0.000 | 2.436 | 0.000 | 0.000 | 0.000 | 5.215 | 0.000 | 0.000 | 9.143 | 25.738 | 7.897 | 16.708 |
| 21 | 6.733 | 0.000 | 0.000 | 0.940 | 0.453 | 4.747 | 0.000 | 16.920 | 20.494 | 0.000 | 18.454 | 1.625 |
| 22 | 8.057 | 8.295 | 0.000 | 0.000 | 0.000 | 5.395 | 0.000 | 0.000 | 0.000 | 5.029 | 31.466 | 32.501 |
| 23 | 7.424 | 2.765 | 1.651 | 0.000 | 1.133 | 0.000 | 0.000 | 0.597 | 0.000 | 14.743 | 22.669 | 3.961 |
| 24 | 16.516 | 0.000 | 0.000 | 6.805 | 21.847 | 1.654 | 0.000 | 6.267 | 0.000 | 0.296 | 35.435 | 0.000 |
| 25 | 3.165 | 38.777 | 11.181 | 8.328 | 0.937 | 0.000 | 4.985 | 10.032 | 0.000 | 55.274 | 1.678 | 0.000 |
| 26 | 9.035 | 24.359 | 3.991 | 13.156 | 0.000 | 10.322 | 4.044 | 0.000 | 19.008 | 40.432 | 0.000 | 0.000 |
| 27 | 1.151 | 14.023 | 0.000 | 0.000 | 0.000 | 5.359 | 0.000 | 1.332 | 53.464 | 35.058 | 1.146 | 1.168 |
| 28 | 0.000 | 0.000 | 0.000 | 1.296 | 0.000 | 8.452 | 0.000 | 0.000 | 0.000 | 7.396 | 39.322 | 0.000 |
| 29 | 13.754 | - | 2.959 | 8.749 | 0.000 | 1.331 | 1.270 | 5.854 | 22.746 | 78.497 | 4.337 | 2.793 |
| 30 | 8.805 | - | 0.000 | 12.800 | 0.000 | 0.000 | 0.306 | 0.000 | 1.171 | 56.802 | 44.642 | 3.707 |
| 31 | 0.000 | - | 14.801 | - | 0.000 | - | 0.000 | 2.525 | - | 0.000 | - | 8.633 |
| Total | 239.52 | 217.45 | 220.54 | 159.79 | 221.65 | 138.00 | 106.92 | 123.21 | 242.01 | 470.64 | 413.77 | 299.32 |
| Hari Hujan | 18.00 | 18.00 | 22.00 | 15.00 | 19.00 | 17.00 | 19.00 | 22.00 | 19.00 | 25.00 | 25.00 | 20.00 |
| Max | 51.909 | 42.135 | 68.774 | 51.814 | 37.017 | 37.368 | 21.186 | 19.192 | 53.464 | 78.497 | 65.673 | 63.682 |
| Avg | 7.73 | 7.77 | 7.11 | 5.33 | 7.15 | 4.60 | 3.45 | 3.97 | 8.07 | 15.18 | 13.79 | 9.66 |
Berdasarkan data hujan TRMM di Grid TRMM-0905, yang terletak di Desa Muaro Aie, Kecamatan Iv Nagari Bayang Utara, Pesisir Selatan, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 2,852.80 mm. Dengan jumlah hari hujan tahunan adalah 239 hari (65.48%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 78.50 mm yang terjadi pada tanggal 29 Oktober 1999.
