| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-0785 |
| Lokasi Stasiun | : | Desa Kelurahan Pangkalan Kasai, Kecamatan Siberida, Indragiri Hulu, Provinsi Riau |
| Longitude | : | 102.375000 |
| Latitude | : | -0.625000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 6.293 | 8.636 | 2.125 | 0.000 | 2.639 | 0.000 | 0.000 | 0.000 | 0.000 | 2.924 | 12.862 | 2.438 |
| 2 | 1.265 | 10.888 | 0.186 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 22.885 | 0.000 | 0.177 | 7.584 |
| 3 | 10.769 | 0.000 | 39.739 | 13.478 | 0.267 | 0.000 | 1.336 | 0.000 | 0.928 | 15.246 | 0.000 | 35.135 |
| 4 | 0.000 | 20.110 | 1.789 | 0.000 | 0.517 | 10.788 | 6.523 | 0.000 | 3.866 | 3.634 | 0.000 | 0.000 |
| 5 | 0.000 | 0.000 | 14.501 | 8.553 | 1.551 | 0.000 | 0.404 | 0.000 | 0.000 | 4.457 | 0.000 | 21.050 |
| 6 | 0.000 | 0.524 | 2.945 | 45.750 | 7.042 | 0.000 | 5.374 | 0.000 | 0.000 | 13.514 | 1.060 | 1.896 |
| 7 | 0.000 | 0.000 | 0.000 | 51.598 | 3.512 | 0.000 | 12.176 | 8.847 | 0.000 | 0.000 | 1.060 | 2.670 |
| 8 | 1.168 | 6.786 | 9.693 | 0.000 | 15.814 | 0.000 | 0.000 | 3.334 | 24.509 | 0.000 | 3.267 | 2.244 |
| 9 | 18.652 | 0.000 | 8.462 | 5.317 | 23.355 | 2.592 | 0.000 | 0.000 | 38.194 | 5.196 | 34.995 | 0.000 |
| 10 | 5.969 | 0.000 | 32.544 | 0.370 | 4.778 | 0.000 | 17.830 | 0.342 | 0.348 | 34.070 | 1.795 | 3.328 |
| 11 | 1.492 | 13.109 | 0.000 | 6.242 | 1.712 | 37.013 | 0.000 | 0.000 | 0.000 | 56.073 | 7.211 | 0.000 |
| 12 | 0.000 | 35.809 | 0.857 | 5.826 | 2.122 | 5.070 | 9.847 | 3.889 | 0.000 | 0.000 | 65.575 | 0.000 |
| 13 | 69.742 | 3.208 | 3.914 | 0.000 | 0.160 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 9.978 | 3.250 |
| 14 | 47.522 | 18.074 | 5.294 | 0.000 | 10.715 | 3.088 | 0.000 | 3.676 | 0.000 | 2.669 | 28.873 | 0.000 |
| 15 | 15.830 | 0.000 | 0.000 | 0.000 | 10.911 | 8.615 | 31.435 | 13.976 | 0.000 | 1.817 | 0.000 | 0.000 |
| 16 | 0.000 | 7.495 | 0.000 | 0.000 | 0.000 | 0.000 | 0.404 | 0.000 | 0.000 | 0.000 | 12.891 | 0.000 |
| 17 | 22.480 | 19.431 | 0.000 | 5.271 | 0.624 | 0.000 | 0.000 | 15.685 | 0.000 | 0.000 | 5.445 | 67.330 |
| 18 | 13.040 | 0.000 | 5.890 | 19.488 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 6.644 | 1.707 | 15.207 |
| 19 | 3.925 | 0.000 | 5.443 | 0.000 | 1.230 | 0.000 | 0.000 | 26.370 | 0.000 | 10.732 | 59.365 | 0.000 |
| 20 | 4.476 | 0.000 | 0.000 | 0.000 | 1.230 | 2.211 | 2.392 | 4.060 | 0.000 | 35.433 | 1.236 | 2.051 |
| 21 | 0.811 | 0.000 | 20.429 | 2.520 | 4.297 | 29.999 | 0.000 | 9.061 | 1.430 | 6.275 | 55.686 | 0.774 |
| 22 | 0.000 | 0.000 | 1.678 | 0.000 | 2.817 | 3.698 | 0.000 | 0.000 | 6.301 | 4.117 | 0.000 | 30.376 |
| 23 | 13.105 | 2.252 | 18.192 | 0.000 | 0.535 | 1.067 | 0.000 | 0.000 | 4.484 | 9.682 | 5.769 | 18.419 |
| 24 | 32.568 | 0.000 | 6.039 | 0.000 | 0.071 | 0.000 | 0.000 | 1.752 | 0.000 | 19.647 | 18.660 | 0.464 |
| 25 | 0.195 | 28.808 | 24.306 | 1.942 | 0.071 | 2.478 | 0.000 | 10.087 | 0.619 | 23.168 | 0.177 | 2.167 |
| 26 | 2.952 | 24.829 | 4.921 | 0.000 | 0.000 | 0.877 | 2.640 | 4.103 | 14.767 | 17.035 | 2.090 | 0.000 |
| 27 | 0.000 | 5.459 | 3.877 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 32.589 | 0.000 | 13.303 | 0.000 |
| 28 | 4.898 | 0.000 | 1.156 | 0.000 | 0.000 | 0.762 | 0.000 | 0.000 | 0.000 | 1.817 | 11.861 | 0.000 |
| 29 | 0.000 | - | 32.731 | 1.341 | 0.000 | 17.077 | 1.677 | 4.103 | 16.507 | 4.798 | 0.912 | 0.000 |
| 30 | 1.103 | - | 0.000 | 0.393 | 0.000 | 0.000 | 12.083 | 1.026 | 4.484 | 4.855 | 12.362 | 0.000 |
| 31 | 17.808 | - | 102.075 | - | 0.000 | - | 0.000 | 0.000 | - | 13.940 | - | 4.923 |
| Total | 296.06 | 205.42 | 348.79 | 168.09 | 95.97 | 125.34 | 104.12 | 110.31 | 171.91 | 297.74 | 368.32 | 221.31 |
| Hari Hujan | 22.00 | 15.00 | 24.00 | 14.00 | 22.00 | 14.00 | 13.00 | 15.00 | 14.00 | 23.00 | 25.00 | 18.00 |
| Max | 69.742 | 35.809 | 102.075 | 51.598 | 23.355 | 37.013 | 31.435 | 26.370 | 38.194 | 56.073 | 65.575 | 67.330 |
| Avg | 9.55 | 7.34 | 11.25 | 5.60 | 3.10 | 4.18 | 3.36 | 3.56 | 5.73 | 9.60 | 12.28 | 7.14 |
Berdasarkan data hujan TRMM di Grid TRMM-0785, yang terletak di Desa Kelurahan Pangkalan Kasai, Kecamatan Siberida, Indragiri Hulu, Provinsi Riau, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 2,513.37 mm. Dengan jumlah hari hujan tahunan adalah 219 hari (60.00%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 102.08 mm yang terjadi pada tanggal 31 Maret 1999.
