| ANNUAL RAINFALL - 1989 | |||||||||
| Sl. No. | Month | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | ||
| 1 | January | 2 | 15.20 | 6 | 35.60 | - | - | - | - |
| 2 | February | - | - | - | - | - | - | - | - |
| 3 | March | - | - | - | - | - | - | 2 | 64.40 |
| 4 | April | - | - | - | - | 4 | 88.00 | - | - |
| 5 | May | 3 | 80.80 | 2 | 65.40 | 9 | 108.00 | 1 | 24.00 |
| 6 | June | - | - | - | 0.20 | 28 | 1017.00 | 7 | 215.60 |
| 7 | July | 4 | 94.60 | 9 | 68.50 | 17 | 626.00 | 13 | 482.40 |
| 8 | August | 2 | 20.80 | 4 | 42.00 | 23 | 373.00 | 14 | 257.90 |
| 9 | September | 3 | 77.00 | 2 | 14.80 | 14 | 185.00 | 10 | 176.20 |
| 10 | October | 6 | 88.60 | 9 | 148.60 | 14 | 276.00 | 4 | 40.80 |
| 11 | November | 16 | 517.40 | 20 | 724.20 | 3 | 69.00 | 1 | 4.40 |
| 12 | December | 5 | 99.00 | 7 | 104.70 | - | - | 1 | 7.00 |
| Total | 41 | 993.40 | 59 | 1204.00 | 112 | 2742.00 | 53 | 1272.70 | |
| 993 | 1204 | 2742 | 1273 | ||||||
| REGIONWISE RAINFALL PARTICULARS OF PONDICHERRY REGION FOR THE YEAR 1989-90 | |||||||||
| Sl. No. | Month/ | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Season | Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | |
| 1 | June | - | - | - | 0.2 | 28 | 1017 | 7 | 215.6 |
| 2 | July | 4 | 94.6 | 9 | 68.5 | 17 | 626 | 13 | 482.4 |
| 3 | August | 2 | 20.8 | 4 | 42 | 23 | 373 | 14 | 257.9 |
| 4 | September | 3 | 77 | 2 | 14.8 | 14 | 185 | 10 | 176.2 |
| South West | 9 | 192.40 | 15 | 125.50 | 82 | 2201.00 | 44 | 1132.10 | |
| Monsoon | |||||||||
| 5 | October | 6 | 88.6 | 9 | 148.6 | 14 | 276 | 4 | 40.8 |
| 6 | November | 16 | 517.4 | 20 | 724.2 | 3 | 69 | 1 | 4.4 |
| 7 | December | 5 | 99 | 7 | 104.7 | - | - | 1 | 7 |
| North East | 27 | 705.00 | 36 | 977.50 | 17 | 345.00 | 6 | 52.20 | |
| Monsoon | |||||||||
| 8 | January | 3 | 54.2 | 3 | 55.6 | - | - | 1 | 26.6 |
| 9 | February | 2 | 30.6 | 3 | 22.2 | - | - | 6 | 124.8 |
| Winter | 5 | 84.80 | 6 | 77.80 | 0 | 0.00 | 7 | 151.40 | |
| Period | |||||||||
| 10 | March | 1 | 4.4 | 5 | 87 | - | - | 5 | 55.8 |
| 11 | April | - | - | - | - | - | - | - | - |
| 12 | May | 8 | 116.6 | 5 | 76 | 18 | 704 | 10 | 562.6 |
| Hot Weather | 9 | 121.00 | 10 | 163.00 | 18 | 704.00 | 15 | 618.40 | |
| Period | |||||||||
| Annual | 50 | 1103.20 | 67 | 1343.80 | 117 | 3250.00 | 72 | 1954.10 | |
| Total | |||||||||
| 1103 | 1344 | 3250 | 1954 | ||||||