| Name | Hafnarfjall |
| Type | Automated observational station |
| Station number | 31674 |
| WMO number | 4832 |
| Abbreviation | hfnfj |
| Forecast region | Faxaflói(fa) |
| Location | 64°28.528', 21°57.617' (64.4755, 21.9603) |
| Height above sea-level | 25.0 m a.s.l. |
| Beginning of weather observations | 1995 |
| Station owned by | Vegagerðin |



