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 May-Jun-Jul
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| KAIKOURA AWS | 30 | 127 - 176 | 176 - 280 | 280 - 431 |
| HANMER FOREST EWS | 28 | 219 - 270 | 270 - 339 | 339 - 455 |
| CULVERDEN | 30 | 104 - 142 | 142 - 187 | 187 - 234 |
| CHRISTCHURCH AERO | 30 | 106 - 164 | 164 - 222 | 222 - 280 |
| DARFIELD | 30 | 135 - 173 | 173 - 234 | 234 - 306 |
| CHRISTCHURCH GARDENS | 30 | 107 - 160 | 160 - 226 | 226 - 295 |
| MT PLEASANT | 23 | 115 - 177 | 177 - 267 | 267 - 332 |
| LINCOLN, BROADFIELD EWS | 29 | 104 - 143 | 143 - 197 | 197 - 286 |
| WINCHMORE EWS | 30 | 116 - 146 | 146 - 205 | 205 - 281 |
| ASHBURTON COUNCIL | 30 | 111 - 144 | 144 - 201 | 201 - 289 |
| PEEL FOREST | 29 | 107 - 161 | 161 - 203 | 203 - 277 |
| LAKE TEKAPO, AIR SAFARIS | 30 | 76 - 137 | 137 - 174 | 174 - 255 |
| WOODBURY | 29 | 100 - 152 | 152 - 201 | 201 - 277 |
| ORARI ESTATE | 30 | 70 - 134 | 134 - 200 | 200 - 281 |
| TIMARU EWS | 30 | 52 - 100 | 100 - 156 | 156 - 198 |
| WAIMATE | 29 | 57 - 107 | 107 - 172 | 172 - 264 |
| IKAWAI | 22 | 47 - 106 | 106 - 185 | 185 - 256 |
| OAMARU AIRPORT AWS | 30 | 57 - 102 | 102 - 181 | 181 - 259 |
| PALMERSTON | 30 | 54 - 116 | 116 - 204 | 204 - 300 |
| TAIAROA HEAD | 30 | 83 - 116 | 116 - 203 | 203 - 254 |
| DUNEDIN, MUSSELBURGH EWS | 29 | 106 - 159 | 159 - 242 | 242 - 377 |
| DUNEDIN AERO AWS | 30 | 90 - 142 | 142 - 212 | 212 - 324 |