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 Apr-May-Jun
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| KAIKOURA AWS | 30 | 106 - 160 | 160 - 234 | 234 - 587 |
| HANMER FOREST EWS | 27 | 150 - 232 | 232 - 326 | 326 - 514 |
| CULVERDEN | 30 | 86 - 116 | 116 - 181 | 181 - 264 |
| DARFIELD | 30 | 110 - 155 | 155 - 214 | 214 - 331 |
| CHRISTCHURCH AERO | 30 | 76 - 134 | 134 - 193 | 193 - 298 |
| CHRISTCHURCH GARDENS | 30 | 89 - 136 | 136 - 201 | 201 - 329 |
| MT PLEASANT | 23 | 94 - 142 | 142 - 237 | 237 - 335 |
| LINCOLN, BROADFIELD EWS | 29 | 78 - 124 | 124 - 167 | 167 - 293 |
| WINCHMORE EWS | 30 | 87 - 136 | 136 - 198 | 198 - 302 |
| ASHBURTON COUNCIL | 30 | 74 - 135 | 135 - 199 | 199 - 348 |
| PEEL FOREST | 30 | 107 - 178 | 178 - 229 | 229 - 348 |
| LAKE TEKAPO, AIR SAFARIS | 30 | 60 - 121 | 121 - 188 | 188 - 274 |
| WOODBURY | 30 | 107 - 171 | 171 - 233 | 233 - 348 |
| ORARI ESTATE | 30 | 76 - 120 | 120 - 199 | 199 - 313 |
| TIMARU EWS | 30 | 58 - 101 | 101 - 147 | 147 - 232 |
| WAIMATE | 30 | 69 - 108 | 108 - 163 | 163 - 262 |
| IKAWAI | 22 | 66 - 101 | 101 - 164 | 164 - 217 |
| OAMARU AIRPORT AWS | 30 | 75 - 103 | 103 - 179 | 179 - 262 |
| PALMERSTON | 30 | 76 - 123 | 123 - 173 | 173 - 267 |
| TAIAROA HEAD | 30 | 80 - 117 | 117 - 172 | 172 - 250 |
| DUNEDIN, MUSSELBURGH EWS | 29 | 99 - 165 | 165 - 204 | 204 - 326 |
| DUNEDIN AERO AWS | 30 | 91 - 147 | 147 - 191 | 191 - 326 |