| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-2288 |
| Lokasi Stasiun | : | Desa Gumiwang Lor, Kecamatan Wuryantoro, Wonogiri, Provinsi Jawa Tengah |
| Longitude | : | 110.875000 |
| Latitude | : | -7.875000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.000 | 3.751 | 2.806 | 0.000 | 7.430 | 0.000 | 0.000 | 0.000 | 0.000 | 0.381 | 16.590 | 0.000 |
| 2 | 5.851 | 20.312 | 0.000 | 0.477 | 2.045 | 0.000 | 24.927 | 0.000 | 0.000 | 0.000 | 10.772 | 5.065 |
| 3 | 0.000 | 8.079 | 2.658 | 15.523 | 3.465 | 7.020 | 0.000 | 0.000 | 0.000 | 0.000 | 23.698 | 2.678 |
| 4 | 7.581 | 3.318 | 4.608 | 31.070 | 0.000 | 0.000 | 25.172 | 0.000 | 0.000 | 0.000 | 0.463 | 32.555 |
| 5 | 0.000 | 0.000 | 6.971 | 0.000 | 0.000 | 0.000 | 0.000 | 4.410 | 0.000 | 0.000 | 4.208 | 5.941 |
| 6 | 0.000 | 5.280 | 33.228 | 9.494 | 0.557 | 1.710 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 11.420 |
| 7 | 3.027 | 0.115 | 26.051 | 3.793 | 7.750 | 4.230 | 0.000 | 0.000 | 0.000 | 0.000 | 0.443 | 6.647 |
| 8 | 17.757 | 4.155 | 7.384 | 32.351 | 3.047 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.215 | 3.433 |
| 9 | 11.498 | 5.886 | 39.667 | 3.843 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.667 | 6.242 | 17.069 |
| 10 | 15.416 | 8.425 | 23.127 | 0.854 | 0.000 | 3.870 | 0.000 | 12.690 | 0.000 | 4.542 | 14.698 | 9.813 |
| 11 | 9.489 | 0.000 | 2.422 | 1.783 | 2.073 | 0.000 | 0.000 | 0.000 | 0.000 | 0.826 | 7.792 | 1.339 |
| 12 | 1.145 | 5.424 | 7.739 | 6.907 | 0.000 | 0.000 | 0.000 | 0.000 | 0.519 | 0.000 | 3.644 | 13.441 |
| 13 | 25.566 | 8.021 | 21.237 | 5.250 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 8.004 | 9.161 | 36.524 |
| 14 | 13.101 | 0.000 | 0.857 | 20.320 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 4.320 | 6.604 | 0.000 |
| 15 | 6.589 | 7.675 | 3.397 | 4.144 | 18.617 | 0.000 | 0.000 | 0.000 | 0.000 | 14.134 | 9.221 | 0.000 |
| 16 | 9.896 | 11.310 | 8.270 | 11.504 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.827 | 14.738 | 1.924 |
| 17 | 0.432 | 6.723 | 29.064 | 0.603 | 0.000 | 0.000 | 0.736 | 0.000 | 0.000 | 2.509 | 2.376 | 4.164 |
| 18 | 3.867 | 8.569 | 0.000 | 0.000 | 0.640 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.799 | 0.000 |
| 19 | 27.398 | 1.587 | 5.671 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 6.805 | 0.000 |
| 20 | 2.162 | 12.839 | 0.532 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.283 | 13.531 | 9.825 | 10.105 |
| 21 | 7.505 | 18.783 | 31.781 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.509 | 9.463 | 14.390 |
| 22 | 0.000 | 11.079 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.381 | 23.416 | 18.359 |
| 23 | 5.164 | 35.719 | 31.545 | 0.000 | 0.000 | 0.000 | 1.226 | 0.000 | 0.000 | 0.000 | 5.758 | 12.442 |
| 24 | 19.843 | 0.490 | 4.342 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 6.416 | 5.497 | 2.484 |
| 25 | 20.148 | 37.133 | 9.747 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 24.017 | 0.000 | 22.973 | 11.615 |
| 26 | 0.102 | 7.732 | 2.304 | 0.000 | 0.000 | 1.980 | 0.000 | 0.000 | 4.294 | 0.000 | 1.651 | 11.712 |
| 27 | 13.406 | 8.309 | 3.190 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.189 | 3.430 | 0.000 | 4.285 |
| 28 | 23.150 | 0.000 | 1.359 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 24.520 | 0.000 | 0.000 |
| 29 | 2.646 | - | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 10.418 | 0.000 | 6.891 |
| 30 | 0.458 | - | 0.768 | 0.553 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 20.741 | 0.000 | 22.231 |
| 31 | 0.254 | - | 0.000 | - | 0.000 | - | 0.000 | 0.000 | - | 4.764 | - | 18.554 |
| Total | 253.45 | 240.71 | 310.73 | 148.47 | 45.62 | 18.81 | 52.06 | 17.10 | 29.30 | 124.92 | 221.05 | 285.08 |
| Hari Hujan | 26.00 | 24.00 | 26.00 | 16.00 | 9.00 | 5.00 | 4.00 | 2.00 | 5.00 | 18.00 | 25.00 | 25.00 |
| Max | 27.398 | 37.133 | 39.667 | 32.351 | 18.617 | 7.020 | 25.172 | 12.690 | 24.017 | 24.520 | 23.698 | 36.524 |
| Avg | 8.18 | 8.60 | 10.02 | 4.95 | 1.47 | 0.63 | 1.68 | 0.55 | 0.98 | 4.03 | 7.37 | 9.20 |
Berdasarkan data hujan TRMM di Grid TRMM-2288, yang terletak di Desa Gumiwang Lor, Kecamatan Wuryantoro, Wonogiri, Provinsi Jawa Tengah, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 1,747.31 mm. Dengan jumlah hari hujan tahunan adalah 185 hari (50.68%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 39.67 mm yang terjadi pada tanggal 9 Maret 1999.
