| ANNUAL RAINFALL - 1990 | |||||||||
| Sl. No. | Month | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | ||
| 1 | January | 3 | 54.20 | 3 | 55.60 | - | - | 1 | 26.60 |
| 2 | February | 2 | 30.60 | 3 | 22.20 | - | - | 6 | 124.80 |
| 3 | March | 1 | 4.40 | 5 | 87.00 | - | - | 5 | 55.80 |
| 4 | April | - | - | - | - | - | - | - | - |
| 5 | May | 8 | 116.60 | 5 | 76.00 | 18 | 704.00 | 10 | 562.60 |
| 6 | June | 4 | 90.80 | 1 | 5.20 | 28 | 716.00 | 4 | 89.00 |
| 7 | July | 6 | 55.00 | 2 | 9.90 | 26 | 902.00 | 7 | 98.00 |
| 8 | August | 8 | 237.10 | 5 | 134.00 | 24 | 482.00 | 6 | 142.00 |
| 9 | September | 10 | 193.70 | 4 | 95.60 | 5 | 82.00 | 1 | 27.40 |
| 10 | October | 14 | 546.10 | 14 | 519.20 | 14 | 285.00 | 8 | 480.40 |
| 11 | November | 7 | 197.20 | 6 | 212.00 | 7 | 68.00 | 5 | 94.00 |
| 12 | December | 2 | 24.60 | 8 | 100.30 | - | - | 1 | 3.80 |
| Total | 65 | 1550.30 | 56 | 1317.00 | 122 | 3239.00 | 54 | 1704.40 | |
| 1550 | 1317 | 3239 | 1704 | ||||||
| REGIONWISE RAINFALL PARTICULARS OF PONDICHERRY REGION FOR THE YEAR 1990-91 | |||||||||
| Sl. No. | Month/ | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Season | Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | |
| 1 | June | 4 | 90.8 | 1 | 5.2 | 28 | 716 | 4 | 89 |
| 2 | July | 6 | 55 | 2 | 9.9 | 26 | 902 | 7 | 98 |
| 3 | August | 8 | 237.1 | 5 | 134 | 24 | 482 | 6 | 142 |
| 4 | September | 10 | 193.7 | 4 | 95.6 | 5 | 82 | 1 | 27.4 |
| South West | 28 | 576.60 | 12 | 244.70 | 83 | 2182.00 | 18 | 356.40 | |
| Monsoon | |||||||||
| 5 | October | 14 | 546.1 | 14 | 519.2 | 14 | 285 | 8 | 480.4 |
| 6 | November | 7 | 197.2 | 6 | 212 | 7 | 68 | 5 | 94 |
| 7 | December | 2 | 24.6 | 8 | 100.3 | - | - | 1 | 3.8 |
| North East | 23 | 767.90 | 28 | 831.50 | 21 | 353.00 | 14 | 578.20 | |
| Monsoon | |||||||||
| 8 | January | 2 | 57.8 | 2 | 13.2 | - | - | 1 | 11.2 |
| 9 | February | 1 | 7.8 | - | - | - | - | - | - |
| Winter | 3 | 65.60 | 2 | 13.20 | 0 | 0.00 | 1 | 11.20 | |
| Period | |||||||||
| 10 | March | - | - | - | - | - | - | - | - |
| 11 | April | - | - | - | 2 | 5 | 84 | - | - |
| 12 | May | - | - | - | - | 10 | 90 | - | - |
| Hot Weather | 0 | 0.00 | 0 | 2.00 | 15 | 174.00 | 0 | 0.00 | |
| Period | |||||||||
| Annual | 54 | 1410.10 | 42 | 1091.40 | 119 | 2709.00 | 33 | 945.80 | |
| Total | |||||||||
| 1410 | 1091 | 2709 | 946 | ||||||