| Tahun Data | : | 1998 |
| Nama Stasiun | : | TRMM-0903 |
| Lokasi Stasiun | : | Desa Malancan, Kecamatan Siberut Utara, Kepulauan Mentawai, Provinsi Sumatera Barat |
| Longitude | : | 98.875000 |
| Latitude | : | -1.125000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.000 | 8.537 | 0.000 | 10.350 | 1.729 | 15.035 | 0.000 | 0.000 | 0.000 | 0.000 | 15.835 | 24.170 |
| 2 | 6.163 | 0.499 | 2.233 | 15.316 | 5.246 | 0.000 | 0.391 | 8.696 | 0.465 | 7.342 | 9.826 | 4.490 |
| 3 | 11.167 | 0.000 | 0.893 | 42.150 | 4.650 | 7.859 | 4.147 | 30.820 | 13.588 | 0.244 | 35.036 | 1.205 |
| 4 | 4.485 | 23.617 | 5.598 | 4.128 | 0.000 | 55.605 | 0.000 | 6.269 | 0.000 | 3.686 | 18.870 | 18.414 |
| 5 | 6.163 | 0.717 | 21.411 | 0.000 | 9.181 | 3.541 | 4.748 | 2.305 | 5.770 | 22.756 | 1.923 | 7.384 |
| 6 | 1.770 | 0.592 | 4.318 | 53.846 | 0.000 | 0.932 | 0.000 | 1.413 | 32.728 | 0.000 | 0.030 | 15.912 |
| 7 | 5.278 | 16.389 | 39.963 | 0.718 | 0.000 | 3.510 | 4.508 | 13.029 | 51.868 | 0.305 | 0.000 | 10.970 |
| 8 | 0.000 | 0.000 | 17.063 | 0.000 | 15.262 | 0.000 | 4.598 | 32.541 | 5.584 | 8.743 | 0.601 | 1.688 |
| 9 | 30.450 | 0.000 | 1.787 | 4.936 | 6.796 | 4.722 | 3.155 | 17.976 | 19.327 | 0.000 | 0.090 | 18.685 |
| 10 | 1.617 | 0.000 | 0.923 | 26.684 | 4.650 | 0.000 | 15.717 | 0.000 | 0.558 | 0.000 | 26.412 | 7.685 |
| 11 | 0.183 | 0.312 | 0.000 | 0.209 | 63.164 | 0.000 | 12.291 | 29.868 | 19.420 | 7.250 | 11.028 | 11.904 |
| 12 | 0.519 | 0.000 | 0.268 | 28.419 | 6.379 | 8.978 | 6.972 | 40.899 | 2.141 | 4.905 | 4.748 | 6.690 |
| 13 | 10.984 | 0.000 | 20.785 | 4.727 | 36.783 | 0.652 | 2.554 | 10.325 | 5.274 | 5.849 | 0.571 | 0.060 |
| 14 | 8.513 | 32.809 | 15.187 | 0.868 | 17.497 | 0.000 | 18.752 | 12.230 | 3.319 | 5.209 | 4.567 | 26.882 |
| 15 | 16.781 | 10.002 | 6.313 | 0.000 | 0.000 | 9.972 | 5.650 | 57.646 | 5.057 | 0.000 | 39.543 | 4.882 |
| 16 | 30.877 | 1.963 | 0.000 | 6.551 | 58.424 | 0.652 | 3.035 | 0.307 | 12.130 | 2.346 | 19.802 | 3.978 |
| 17 | 7.475 | 7.945 | 29.749 | 13.402 | 16.931 | 21.776 | 56.947 | 17.177 | 10.144 | 8.377 | 7.602 | 24.019 |
| 18 | 0.000 | 9.098 | 18.820 | 4.756 | 1.520 | 16.122 | 25.844 | 22.954 | 5.057 | 1.310 | 7.061 | 44.693 |
| 19 | 9.153 | 19.567 | 0.000 | 25.487 | 0.000 | 6.617 | 31.884 | 0.369 | 7.259 | 0.122 | 1.593 | 41.288 |
| 20 | 6.285 | 0.000 | 0.000 | 0.000 | 0.000 | 11.960 | 60.493 | 7.559 | 0.000 | 2.985 | 0.000 | 15.882 |
| 21 | 0.000 | 0.592 | 0.089 | 3.799 | 0.000 | 0.000 | 17.610 | 0.000 | 13.867 | 28.179 | 21.605 | 0.512 |
| 22 | 0.000 | 0.000 | 10.154 | 0.000 | 0.000 | 0.000 | 3.336 | 36.720 | 20.226 | 7.707 | 11.058 | 7.625 |
| 23 | 0.000 | 0.000 | 91.360 | 63.329 | 0.328 | 13.451 | 0.000 | 24.306 | 17.620 | 81.094 | 0.000 | 3.616 |
| 24 | 0.000 | 0.000 | 0.000 | 6.731 | 11.148 | 0.000 | 0.721 | 11.984 | 5.894 | 14.562 | 0.000 | 10.367 |
| 25 | 0.000 | 0.000 | 6.343 | 0.000 | 1.103 | 0.217 | 35.971 | 19.543 | 14.239 | 51.240 | 2.224 | 6.811 |
| 26 | 0.000 | 0.000 | 0.000 | 0.000 | 3.607 | 0.870 | 6.521 | 25.996 | 2.544 | 31.103 | 9.706 | 19.378 |
| 27 | 0.000 | 0.000 | 12.924 | 12.863 | 0.000 | 0.000 | 0.000 | 0.123 | 0.527 | 5.544 | 7.151 | 4.370 |
| 28 | 0.000 | 0.000 | 7.862 | 7.718 | 1.699 | 0.155 | 0.240 | 1.352 | 0.000 | 1.523 | 2.825 | 1.658 |
| 29 | 10.282 | - | 2.084 | 16.603 | 0.000 | 0.000 | 8.745 | 14.750 | 4.374 | 3.930 | 82.362 | 21.367 |
| 30 | 6.560 | - | 14.413 | 4.756 | 0.268 | 0.000 | 11.239 | 5.285 | 9.058 | 41.217 | 10.156 | 22.633 |
| 31 | 0.000 | - | 41.243 | - | 5.394 | - | 4.725 | 3.104 | - | 7.829 | - | 81.749 |
| Total | 174.71 | 132.64 | 371.78 | 358.35 | 271.76 | 182.63 | 350.79 | 455.55 | 288.04 | 355.36 | 352.23 | 470.97 |
| Hari Hujan | 19.00 | 14.00 | 24.00 | 23.00 | 21.00 | 19.00 | 26.00 | 28.00 | 26.00 | 26.00 | 26.00 | 31.00 |
| Max | 30.877 | 32.809 | 91.360 | 63.329 | 63.164 | 55.605 | 60.493 | 57.646 | 51.868 | 81.094 | 82.362 | 81.749 |
| Avg | 5.64 | 4.74 | 11.99 | 11.94 | 8.77 | 6.09 | 11.32 | 14.70 | 9.60 | 11.46 | 11.74 | 15.19 |
Berdasarkan data hujan TRMM di Grid TRMM-0903, yang terletak di Desa Malancan, Kecamatan Siberut Utara, Kepulauan Mentawai, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 1998 adalah sebesar 3,764.79 mm. Dengan jumlah hari hujan tahunan adalah 283 hari (77.53%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 91.36 mm yang terjadi pada tanggal 23 Maret 1998.
