We investigate fault‐offset fluvial terraces at two sites along the Hutt River, near Wellington, New Zealand, to determine horizontal slip rates for the southern part of the Wellington fault for the last ∼100 ka. Using photogrammetric analysis of historic aerial photos, we measured the original displacements of terrace risers at Emerald Hill, which have been modified by urban development. Fourteen sediment samples from this site and from another location, Dry Creek, were analyzed using Optically Stimulated Luminescence (OSL) methods, yielding ages of between ∼10 ka and ∼100 ka. From our displacement‐age relations, we estimate an average slip rate of mula" id="inline-formula-1">mg class="inline-graphic" alt="Graphic" src="559/embed/inline-graphic-1.gif" /> (2