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 Jun-Jul-Aug
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| KAIKOURA AWS | 30 | 118 - 187 | 187 - 268 | 268 - 466 |
| HANMER FOREST EWS | 29 | 207 - 324 | 324 - 392 | 392 - 507 |
| CULVERDEN | 30 | 97 - 149 | 149 - 209 | 209 - 302 |
| DARFIELD | 30 | 139 - 194 | 194 - 264 | 264 - 340 |
| CHRISTCHURCH AERO | 30 | 96 - 165 | 165 - 244 | 244 - 349 |
| CHRISTCHURCH GARDENS | 30 | 99 - 174 | 174 - 277 | 277 - 371 |
| MT PLEASANT | 23 | 116 - 194 | 194 - 243 | 243 - 406 |
| LINCOLN, BROADFIELD EWS | 29 | 91 - 152 | 152 - 223 | 223 - 308 |
| WINCHMORE EWS | 30 | 106 - 153 | 153 - 262 | 262 - 308 |
| ASHBURTON COUNCIL | 30 | 81 - 160 | 160 - 253 | 253 - 337 |
| PEEL FOREST | 29 | 89 - 158 | 158 - 226 | 226 - 322 |
| LAKE TEKAPO, AIR SAFARIS | 30 | 77 - 145 | 145 - 189 | 189 - 279 |
| WOODBURY | 29 | 89 - 150 | 150 - 229 | 229 - 322 |
| ORARI ESTATE | 30 | 80 - 127 | 127 - 193 | 193 - 320 |
| TIMARU EWS | 30 | 37 - 88 | 88 - 155 | 155 - 222 |
| WAIMATE | 29 | 31 - 105 | 105 - 187 | 187 - 263 |
| IKAWAI | 23 | 61 - 113 | 113 - 171 | 171 - 260 |
| OAMARU AIRPORT AWS | 30 | 35 - 117 | 117 - 194 | 194 - 260 |
| PALMERSTON | 30 | 42 - 126 | 126 - 214 | 214 - 322 |
| TAIAROA HEAD | 30 | 75 - 118 | 118 - 200 | 200 - 244 |
| DUNEDIN, MUSSELBURGH EWS | 30 | 94 - 164 | 164 - 231 | 231 - 354 |
| DUNEDIN AERO AWS | 30 | 82 - 148 | 148 - 208 | 208 - 300 |