| ANNUAL RAINFALL - 1986 | |||||||||
| Sl. No. | Month | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | ||
| 1 | January | 4 | 104.20 | 7 | 223.50 | 2 | 150.00 | 2 | 50.00 |
| 2 | February | 1 | 25.00 | 4 | 78.50 | - | - | 2 | 28.60 |
| 3 | March | 1 | 43.00 | 1 | 87.50 | - | - | - | - |
| 4 | April | - | - | - | - | 1 | 34.00 | - | - |
| 5 | May | - | - | 1 | 10.70 | 5 | 168.00 | 2 | 29.40 |
| 6 | June | 2 | 30.00 | - | - | 24 | 1589.00 | 7 | 43.20 |
| 7 | July | 1 | 5.40 | 3 | 52.00 | 18 | 631.00 | 6 | 96.30 |
| 8 | August | 8 | 109.20 | 6 | 94.00 | 12 | 385.00 | 6 | 297.70 |
| 9 | September | 4 | 27.80 | 4 | 97.10 | 14 | 367.00 | 4 | 28.80 |
| 10 | October | 9 | 117.20 | 12 | 236.40 | 6 | 44.00 | 8 | 204.70 |
| 11 | November | 9 | 210.60 | 7 | 305.10 | 6 | 131.00 | 8 | 303.20 |
| 12 | December | 7 | 133.00 | 13 | 407.10 | 1 | 6.00 | - | - |
| Total | 46 | 805.40 | 58 | 1591.90 | 89 | 3505.00 | 45 | 1081.90 | |
| 805 | 1592 | 3505 | 1082 | ||||||
| REGIONWISE RAINFALL PARTICULARS OF PONDICHERRY REGION FOR THE YEAR 1986-87 | |||||||||
| Sl. No. | Month/ | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Season | Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | |
| 1 | June | 2 | 30 | - | - | 24 | 1589 | 7 | 43.2 |
| 2 | July | 1 | 5.4 | 3 | 52 | 18 | 631 | 6 | 96.3 |
| 3 | August | 8 | 109.2 | 6 | 94 | 12 | 385 | 6 | 297.7 |
| 4 | September | 4 | 27.8 | 4 | 97.1 | 14 | 367 | 4 | 28.8 |
| South West | 15 | 172.40 | 13 | 243.10 | 68 | 2972.00 | 23 | 466.00 | |
| Monsoon | |||||||||
| 5 | October | 9 | 117.2 | 12 | 236.4 | 6 | 44 | 8 | 204.7 |
| 6 | November | 9 | 210.6 | 7 | 305.1 | 6 | 131 | 8 | 303.2 |
| 7 | December | 7 | 133 | 13 | 407.1 | 1 | 6 | - | - |
| North East | 25 | 460.80 | 32 | 948.60 | 13 | 181.00 | 16 | 507.90 | |
| Monsoon | |||||||||
| 8 | January | 1 | 6.2 | 1 | 22.9 | - | - | 1 | 24.6 |
| 9 | February | - | - | - | - | - | - | - | - |
| Winter | 1 | 6.20 | 1 | 22.90 | 0 | 0.00 | 1 | 24.60 | |
| Period | |||||||||
| 10 | March | 1 | 45 | 1 | 32.9 | - | - | - | - |
| 11 | April | - | - | - | - | - | - | 1 | 49 |
| 12 | May | - | - | 2 | 41.6 | 5 | 45 | 1 | 32 |
| Hot Weather | 1 | 45.00 | 3 | 74.50 | 5 | 45.00 | 2 | 81.00 | |
| Period | |||||||||
| Annual | 42 | 684.40 | 49 | 1289.10 | 86 | 3198.00 | 42 | 1079.50 | |
| Total | |||||||||
| 684 | 1289 | 3198 | 1080 | ||||||