| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-0540 |
| Lokasi Stasiun | : | Desa Mongiilo, Kecamatan Bulango Ulu, Bone Bolango, Provinsi Gorontalo |
| Longitude | : | 123.125000 |
| Latitude | : | 0.625000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 26.696 | 15.353 | 0.000 | 0.000 | 8.471 | 0.000 | 21.039 | 0.000 | 0.633 | 8.749 | 30.898 | 0.000 |
| 2 | 0.277 | 0.000 | 10.867 | 0.000 | 2.814 | 0.000 | 0.000 | 0.000 | 6.685 | 0.000 | 7.811 | 3.609 |
| 3 | 0.000 | 17.715 | 48.113 | 8.495 | 0.000 | 0.000 | 0.900 | 0.000 | 0.696 | 3.258 | 0.000 | 3.412 |
| 4 | 0.000 | 8.414 | 1.181 | 39.302 | 0.000 | 0.535 | 19.914 | 0.000 | 2.088 | 3.886 | 0.000 | 2.723 |
| 5 | 34.460 | 1.083 | 17.993 | 9.288 | 12.281 | 0.000 | 2.475 | 1.016 | 3.606 | 7.725 | 4.126 | 29.197 |
| 6 | 0.000 | 1.033 | 0.000 | 1.416 | 9.145 | 0.000 | 9.676 | 0.677 | 0.000 | 3.258 | 0.000 | 1.443 |
| 7 | 0.000 | 5.708 | 0.079 | 0.000 | 0.117 | 0.423 | 4.575 | 3.386 | 10.587 | 18.033 | 0.000 | 0.000 |
| 8 | 0.871 | 0.000 | 17.363 | 3.455 | 3.019 | 0.000 | 1.163 | 12.755 | 0.169 | 21.221 | 0.000 | 0.000 |
| 9 | 0.158 | 23.915 | 0.276 | 0.000 | 12.193 | 0.000 | 1.688 | 36.740 | 8.562 | 24.199 | 0.000 | 0.000 |
| 10 | 5.268 | 0.000 | 10.001 | 19.425 | 7.005 | 0.000 | 0.563 | 2.991 | 0.000 | 11.332 | 4.126 | 1.050 |
| 11 | 0.079 | 0.000 | 2.874 | 0.000 | 1.524 | 0.000 | 11.063 | 0.000 | 0.000 | 1.024 | 49.860 | 16.206 |
| 12 | 0.000 | 0.000 | 0.000 | 5.663 | 4.455 | 0.000 | 9.263 | 0.000 | 3.543 | 0.116 | 6.288 | 3.051 |
| 13 | 5.862 | 0.000 | 0.000 | 6.456 | 51.412 | 7.355 | 0.000 | 0.000 | 2.278 | 0.000 | 18.519 | 0.000 |
| 14 | 2.060 | 0.000 | 1.299 | 34.942 | 2.022 | 16.403 | 2.850 | 0.451 | 4.155 | 3.467 | 14.688 | 0.197 |
| 15 | 0.000 | 1.575 | 19.686 | 6.739 | 2.257 | 25.251 | 1.163 | 0.000 | 6.411 | 14.287 | 0.000 | 1.804 |
| 16 | 19.171 | 0.000 | 20.238 | 1.189 | 12.516 | 1.872 | 1.050 | 0.000 | 0.886 | 5.794 | 0.000 | 0.000 |
| 17 | 0.000 | 0.000 | 1.024 | 10.930 | 12.223 | 34.210 | 25.427 | 0.000 | 0.000 | 9.749 | 14.884 | 2.756 |
| 18 | 0.000 | 0.000 | 2.599 | 0.000 | 1.466 | 0.535 | 19.351 | 0.000 | 3.269 | 1.047 | 0.737 | 3.018 |
| 19 | 8.912 | 0.000 | 18.741 | 0.000 | 0.000 | 1.159 | 7.801 | 0.000 | 0.000 | 13.170 | 1.032 | 30.050 |
| 20 | 8.120 | 0.000 | 13.938 | 0.000 | 27.201 | 27.903 | 0.750 | 3.668 | 0.000 | 20.569 | 0.639 | 5.642 |
| 21 | 1.862 | 0.640 | 3.386 | 0.453 | 0.674 | 18.208 | 0.000 | 0.000 | 11.220 | 6.538 | 0.000 | 12.466 |
| 22 | 4.159 | 8.956 | 9.292 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 1.455 | 0.000 | 0.000 | 0.525 |
| 23 | 5.624 | 10.973 | 4.922 | 0.000 | 9.028 | 6.731 | 0.000 | 0.254 | 4.344 | 0.000 | 0.835 | 0.000 |
| 24 | 0.000 | 0.000 | 0.000 | 0.453 | 12.662 | 19.790 | 0.000 | 0.000 | 4.134 | 0.000 | 0.344 | 0.000 |
| 25 | 0.792 | 8.464 | 22.049 | 2.039 | 0.147 | 6.953 | 0.000 | 14.024 | 0.000 | 7.562 | 2.947 | 0.000 |
| 26 | 15.962 | 0.000 | 5.000 | 0.000 | 0.000 | 4.123 | 0.000 | 19.612 | 0.696 | 4.723 | 0.000 | 0.000 |
| 27 | 7.248 | 3.198 | 2.874 | 6.456 | 6.507 | 3.856 | 0.000 | 13.912 | 1.582 | 7.050 | 0.196 | 0.689 |
| 28 | 8.674 | 22.192 | 2.914 | 0.000 | 0.117 | 9.917 | 1.050 | 0.113 | 0.000 | 2.978 | 4.372 | 0.000 |
| 29 | 27.885 | - | 0.000 | 4.417 | 0.674 | 0.357 | 0.000 | 0.000 | 26.805 | 10.796 | 0.000 | 3.445 |
| 30 | 0.277 | - | 35.357 | 0.453 | 0.000 | 0.000 | 0.000 | 0.000 | 13.961 | 10.959 | 0.000 | 7.939 |
| 31 | 5.070 | - | 1.575 | - | 0.000 | - | 0.000 | 0.000 | - | 15.217 | - | 0.131 |
| Total | 189.49 | 129.22 | 273.64 | 161.57 | 199.93 | 185.58 | 141.76 | 109.60 | 117.77 | 236.71 | 162.30 | 129.35 |
| Hari Hujan | 22.00 | 14.00 | 25.00 | 18.00 | 24.00 | 18.00 | 19.00 | 13.00 | 22.00 | 26.00 | 17.00 | 20.00 |
| Max | 34.460 | 23.915 | 48.113 | 39.302 | 51.412 | 34.210 | 25.427 | 36.740 | 26.805 | 24.199 | 49.860 | 30.050 |
| Avg | 6.11 | 4.61 | 8.83 | 5.39 | 6.45 | 6.19 | 4.57 | 3.54 | 3.93 | 7.64 | 5.41 | 4.17 |
Berdasarkan data hujan TRMM di Grid TRMM-0540, yang terletak di Desa Mongiilo, Kecamatan Bulango Ulu, Bone Bolango, Provinsi Gorontalo, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 2,036.92 mm. Dengan jumlah hari hujan tahunan adalah 238 hari (65.21%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 51.41 mm yang terjadi pada tanggal 13 Mei 1999.
