| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-1199 |
| Lokasi Stasiun | : | Desa Saureinu, Kecamatan Sipora Selatan, Kepulauan Mentawai, Provinsi Sumatera Barat |
| Longitude | : | 99.625000 |
| Latitude | : | -2.125000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 15.557 | 0.000 | 0.000 | 0.123 | 27.341 | 0.060 | 0.000 | 0.000 | 0.000 | 19.690 | 0.616 | 16.982 |
| 2 | 36.585 | 5.770 | 0.332 | 1.665 | 10.198 | 0.000 | 59.155 | 0.000 | 7.803 | 25.853 | 1.877 | 35.371 |
| 3 | 12.715 | 6.236 | 55.707 | 0.000 | 66.199 | 0.181 | 4.118 | 16.418 | 16.119 | 4.160 | 0.000 | 8.996 |
| 4 | 0.947 | 10.672 | 0.000 | 0.216 | 38.242 | 6.012 | 17.090 | 6.061 | 18.781 | 48.932 | 10.803 | 3.305 |
| 5 | 0.000 | 14.767 | 2.141 | 1.202 | 0.000 | 5.015 | 1.412 | 37.809 | 0.000 | 13.127 | 31.915 | 12.147 |
| 6 | 0.000 | 0.682 | 4.192 | 9.187 | 3.956 | 9.365 | 5.736 | 0.000 | 2.782 | 56.882 | 37.517 | 0.000 |
| 7 | 0.000 | 0.000 | 0.905 | 11.067 | 14.887 | 2.659 | 11.913 | 39.398 | 0.000 | 0.154 | 27.637 | 6.548 |
| 8 | 0.000 | 3.102 | 15.110 | 19.977 | 24.118 | 4.109 | 22.915 | 0.000 | 8.286 | 35.929 | 10.741 | 1.561 |
| 9 | 3.607 | 0.000 | 13.120 | 0.000 | 6.242 | 21.087 | 19.826 | 32.513 | 17.420 | 7.210 | 0.000 | 3.366 |
| 10 | 0.000 | 0.341 | 23.224 | 2.744 | 12.044 | 43.593 | 43.270 | 8.680 | 8.196 | 16.578 | 0.092 | 10.587 |
| 11 | 0.520 | 3.009 | 32.242 | 3.730 | 9.758 | 9.244 | 55.654 | 0.000 | 3.417 | 21.693 | 32.254 | 42.286 |
| 12 | 1.712 | 0.000 | 7.118 | 0.000 | 7.180 | 0.060 | 0.000 | 3.472 | 6.895 | 1.541 | 28.314 | 2.509 |
| 13 | 2.262 | 20.816 | 0.000 | 0.000 | 14.535 | 0.000 | 0.000 | 4.031 | 0.605 | 0.955 | 40.594 | 16.829 |
| 14 | 0.000 | 0.000 | 25.817 | 0.000 | 35.488 | 0.000 | 0.000 | 19.125 | 2.298 | 0.000 | 5.663 | 0.979 |
| 15 | 2.598 | 2.575 | 0.000 | 0.000 | 6.242 | 0.997 | 3.265 | 5.267 | 3.206 | 21.878 | 5.417 | 0.887 |
| 16 | 83.898 | 0.000 | 0.995 | 0.000 | 0.205 | 0.000 | 2.206 | 2.118 | 8.317 | 11.740 | 27.760 | 0.612 |
| 17 | 23.595 | 0.000 | 1.146 | 0.000 | 28.718 | 0.000 | 1.736 | 29.129 | 16.543 | 1.756 | 0.000 | 64.868 |
| 18 | 12.623 | 0.000 | 0.000 | 2.620 | 1.612 | 14.259 | 0.000 | 0.000 | 9.405 | 6.286 | 7.171 | 1.224 |
| 19 | 4.432 | 13.029 | 11.702 | 5.210 | 19.107 | 0.000 | 0.000 | 0.794 | 10.192 | 10.477 | 35.455 | 0.245 |
| 20 | 18.675 | 1.179 | 0.000 | 0.000 | 7.942 | 0.000 | 0.000 | 0.412 | 29.940 | 2.311 | 3.108 | 9.179 |
| 21 | 2.934 | 0.000 | 0.000 | 0.000 | 0.000 | 4.320 | 0.000 | 3.796 | 3.115 | 1.233 | 22.805 | 2.050 |
| 22 | 0.000 | 0.682 | 0.000 | 0.000 | 6.330 | 20.573 | 0.000 | 14.153 | 1.391 | 9.706 | 0.000 | 33.382 |
| 23 | 2.781 | 41.818 | 4.916 | 0.000 | 0.000 | 0.453 | 0.000 | 0.088 | 23.015 | 44.865 | 1.662 | 11.382 |
| 24 | 33.315 | 0.062 | 0.000 | 2.867 | 40.206 | 4.834 | 0.000 | 27.687 | 42.793 | 8.351 | 11.449 | 0.000 |
| 25 | 6.846 | 66.543 | 6.545 | 4.347 | 18.784 | 52.959 | 2.059 | 6.856 | 13.035 | 12.480 | 3.816 | 0.092 |
| 26 | 17.911 | 59.470 | 4.735 | 1.048 | 0.000 | 15.317 | 0.000 | 16.918 | 10.403 | 11.987 | 0.739 | 13.371 |
| 27 | 15.435 | 3.288 | 4.886 | 3.114 | 0.000 | 0.000 | 0.000 | 11.181 | 9.678 | 9.521 | 37.701 | 0.061 |
| 28 | 1.406 | 2.823 | 0.332 | 9.125 | 0.000 | 0.121 | 0.000 | 10.475 | 41.221 | 0.000 | 14.219 | 0.765 |
| 29 | 7.091 | - | 4.011 | 7.368 | 0.000 | 0.000 | 2.647 | 3.560 | 32.087 | 6.533 | 1.293 | 0.000 |
| 30 | 14.793 | - | 0.181 | 7.830 | 0.000 | 0.876 | 0.382 | 7.974 | 5.177 | 2.219 | 22.190 | 36.748 |
| 31 | 1.223 | - | 0.151 | - | 0.000 | - | 0.000 | 11.916 | - | 1.140 | - | 8.330 |
| Total | 323.46 | 256.86 | 219.51 | 93.44 | 399.33 | 216.09 | 253.38 | 319.83 | 352.12 | 415.19 | 422.81 | 344.66 |
| Hari Hujan | 24.00 | 19.00 | 22.00 | 18.00 | 22.00 | 21.00 | 16.00 | 25.00 | 27.00 | 29.00 | 26.00 | 28.00 |
| Max | 83.898 | 66.543 | 55.707 | 19.977 | 66.199 | 52.959 | 59.155 | 39.398 | 42.793 | 56.882 | 40.594 | 64.868 |
| Avg | 10.43 | 9.17 | 7.08 | 3.11 | 12.88 | 7.20 | 8.17 | 10.32 | 11.74 | 13.39 | 14.09 | 11.12 |
Berdasarkan data hujan TRMM di Grid TRMM-1199, yang terletak di Desa Saureinu, Kecamatan Sipora Selatan, Kepulauan Mentawai, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 3,616.69 mm. Dengan jumlah hari hujan tahunan adalah 277 hari (75.89%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 83.90 mm yang terjadi pada tanggal 16 Januari 1999.
