Rainfall tercile tables for several locations in the East of the South Island. Data are based on the 30-year period 1971-2000. The ranges for each tercile are: below normal = second lowest to 33rd percentile; near normal = 34th to 66th percentile; above normal = 67th percentile to second highest.
Historical rainfall total (mm) range for forecast area ESI for the 3-month period Jul-Aug-Sep
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| KAIKOURA AWS | 30 | 91 - 164 | 164 - 281 | 281 - 475 |
| HANMER FOREST EWS | 30 | 196 - 280 | 280 - 344 | 344 - 552 |
| CULVERDEN | 30 | 87 - 137 | 137 - 197 | 197 - 323 |
| DARFIELD | 30 | 124 - 170 | 170 - 254 | 254 - 371 |
| CHRISTCHURCH AERO | 30 | 71 - 132 | 132 - 225 | 225 - 321 |
| CHRISTCHURCH GARDENS | 29 | 69 - 131 | 131 - 232 | 232 - 347 |
| MT PLEASANT | 23 | 88 - 151 | 151 - 224 | 224 - 374 |
| LINCOLN, BROADFIELD EWS | 30 | 67 - 124 | 124 - 227 | 227 - 297 |
| WINCHMORE EWS | 30 | 89 - 133 | 133 - 211 | 211 - 338 |
| ASHBURTON COUNCIL | 30 | 80 - 133 | 133 - 212 | 212 - 339 |
| PEEL FOREST | 29 | 99 - 158 | 158 - 242 | 242 - 415 |
| LAKE TEKAPO, AIR SAFARIS | 30 | 65 - 120 | 120 - 200 | 200 - 322 |
| WOODBURY | 29 | 99 - 164 | 164 - 242 | 242 - 386 |
| ORARI ESTATE | 30 | 61 - 120 | 120 - 179 | 179 - 362 |
| TIMARU EWS | 30 | 38 - 78 | 78 - 140 | 140 - 287 |
| WAIMATE | 29 | 39 - 99 | 99 - 159 | 159 - 293 |
| IKAWAI | 23 | 39 - 97 | 97 - 158 | 158 - 275 |
| OAMARU AIRPORT AWS | 30 | 52 - 104 | 104 - 180 | 180 - 315 |
| PALMERSTON | 30 | 60 - 116 | 116 - 194 | 194 - 359 |
| TAIAROA HEAD | 30 | 74 - 113 | 113 - 163 | 163 - 222 |
| DUNEDIN, MUSSELBURGH EWS | 29 | 112 - 157 | 157 - 214 | 214 - 291 |
| DUNEDIN AERO AWS | 30 | 98 - 138 | 138 - 192 | 192 - 252 |