| Code | Environment variable | Unit | Code | Environment variable | Unit |
| Bio1 | Annual mean temperature | ˚C | Bio11 | Mean temperature of coldest quarter | ˚C |
| Bio2 | Mean diurnal range | ˚C | Bio12 | Annual precipitation | mm |
| Bio3 | Isothermality | - | Bio13 | Precipitation of wettest month | mm |
| Bio4 | Temperature seasonality | - | Bio14 | Precipitation of driest month | mm |
| Bio5 | Maximum temperature of warmest month | ˚C | Bio15 | Precipitation seasonality | - |
| Bio6 | Minimum temperature of coldest month | ˚C | Bio16 | Precipitation of wettest quarter | mm |
| Bio7 | Temperature annual range | ˚C | Bio17 | Precipitation of driest quarter | mm |
| Bio8 | Mean temperature of wettest quarter | ˚C | Bio18 | Precipitation of warmest quarter | mm |
| Bio9 | Mean temperature of driest quarter | ˚C | Bio19 | Precipitation of coldest quarter | mm |
| Bio10 | Mean temperature of warmest quarter | ˚C | - | - | - |