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 Aug-Sep-Oct
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| KAIKOURA AWS | 30 | 82 - 119 | 119 - 254 | 254 - 485 |
| HANMER FOREST EWS | 30 | 191 - 244 | 244 - 379 | 379 - 557 |
| CULVERDEN | 30 | 88 - 117 | 117 - 187 | 187 - 320 |
| DARFIELD | 30 | 91 - 171 | 171 - 259 | 259 - 355 |
| CHRISTCHURCH AERO | 30 | 50 - 111 | 111 - 209 | 209 - 267 |
| CHRISTCHURCH GARDENS | 29 | 58 - 119 | 119 - 215 | 215 - 289 |
| MT PLEASANT | 23 | 79 - 129 | 129 - 227 | 227 - 286 |
| LINCOLN, BROADFIELD EWS | 30 | 49 - 121 | 121 - 208 | 208 - 275 |
| WINCHMORE EWS | 30 | 79 - 129 | 129 - 219 | 219 - 305 |
| ASHBURTON COUNCIL | 30 | 66 - 133 | 133 - 221 | 221 - 306 |
| PEEL FOREST | 30 | 131 - 214 | 214 - 300 | 300 - 457 |
| LAKE TEKAPO, AIR SAFARIS | 30 | 79 - 137 | 137 - 203 | 203 - 239 |
| WOODBURY | 30 | 105 - 212 | 212 - 285 | 285 - 455 |
| ORARI ESTATE | 30 | 66 - 131 | 131 - 215 | 215 - 331 |
| TIMARU EWS | 30 | 40 - 94 | 94 - 153 | 153 - 261 |
| WAIMATE | 29 | 56 - 93 | 93 - 161 | 161 - 295 |
| IKAWAI | 23 | 44 - 103 | 103 - 149 | 149 - 276 |
| OAMARU AIRPORT AWS | 30 | 55 - 103 | 103 - 178 | 178 - 317 |
| PALMERSTON | 30 | 38 - 110 | 110 - 197 | 197 - 322 |
| TAIAROA HEAD | 30 | 70 - 128 | 128 - 169 | 169 - 237 |
| DUNEDIN, MUSSELBURGH EWS | 29 | 80 - 177 | 177 - 219 | 219 - 288 |
| DUNEDIN AERO AWS | 30 | 74 - 150 | 150 - 195 | 195 - 268 |