| ANNUAL RAINFALL - 1978 | |||||||||
| Sl. No. | Month | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | ||
| 1 | January | 1 | 3.60 | - | - | - | - | 3 | 0.50 |
| 2 | February | - | - | - | - | - | - | 1 | 3.00 |
| 3 | March | - | - | - | - | - | - | - | - |
| 4 | April | 2 | 2.60 | 1 | 61.50 | - | - | 3 | 8.80 |
| 5 | May | 3 | 9.20 | 1 | 4.30 | 19 | 543.80 | 1 | 4.20 |
| 6 | June | 5 | 18.00 | - | - | 30 | 1116.00 | 7 | 88.80 |
| 7 | July | 12 | 106.40 | 5 | 31.00 | 28 | 950.80 | 9 | 99.40 |
| 8 | August | 11 | 78.80 | 3 | 39.90 | 26 | 491.20 | 17 | 211.40 |
| 9 | September | 17 | 343.20 | 6 | 49.20 | 8 | 70.80 | 12 | 99.60 |
| 10 | October | 13 | 249.60 | 13 | 230.50 | 3 | 25.40 | 6 | 100.10 |
| 11 | November | 10 | 578.80 | 7 | 473.80 | 8 | 129.80 | 6 | 157.20 |
| 12 | December | 21 | 470.40 | 15 | 440.10 | 4 | 79.00 | 2 | 12.00 |
| Total | 95 | 1860.60 | 51 | 1330.30 | 126 | 3406.80 | 67 | 785.00 | |
| 1861 | 1330 | 3407 | 785 | ||||||
| REGIONWISE RAINFALL PARTICULARS OF PONDICHERRY REGION FOR THE YEAR 1978-79 | |||||||||
| Sl. No. | Month/ | Pondicherry | Karaikal | Mahe | Yanam | ||||
| Season | Days | Rainfall | Days | Rainfall | Days | Rainfall | Days | Rainfall | |
| 1 | June | 5 | 18 | - | - | 30 | 1116 | 7 | 88.8 |
| 2 | July | 12 | 106.4 | 5 | 31 | 28 | 950.8 | 9 | 99.4 |
| 3 | August | 11 | 78.8 | 3 | 39.9 | 26 | 491.2 | 17 | 211.4 |
| 4 | September | 17 | 343.2 | 6 | 49.2 | 8 | 70.8 | 12 | 99.6 |
| South West | 45 | 546.40 | 14 | 120.10 | 92 | 2628.80 | 45 | 499.20 | |
| Monsoon | |||||||||
| 5 | October | 13 | 249.6 | 13 | 230.5 | 3 | 25.4 | 6 | 100.1 |
| 6 | November | 10 | 578.8 | 7 | 473.8 | 8 | 129.8 | 6 | 157.2 |
| 7 | December | 21 | 470.4 | 15 | 440.1 | 4 | 79 | 2 | 12 |
| North East | 44 | 1298.80 | 35 | 1144.40 | 15 | 234.20 | 14 | 269.30 | |
| Monsoon | |||||||||
| 8 | January | - | - | - | - | - | - | - | - |
| 9 | February | 3 | 31.4 | 1 | 79 | - | - | 1 | 15 |
| Winter | 3 | 31.40 | 1 | 79.00 | 0 | 0.00 | 1 | 15.00 | |
| Period | |||||||||
| 10 | March | 1 | 15 | - | - | - | - | - | - |
| 11 | April | - | - | - | - | 4 | 65.8 | - | - |
| 12 | May | 2 | 7.7 | - | - | 5 | 85.9 | 4 | 207.1 |
| Hot Weather | 3 | 22.70 | 0 | 0.00 | 9 | 151.70 | 4 | 207.10 | |
| Period | |||||||||
| Annual | 95 | 1899.30 | 50 | 1343.50 | 116 | 3014.70 | 64 | 990.60 | |
| Total | |||||||||
| 1899 | 1344 | 3015 | 991 | ||||||