The temperature dependence of small angle neutron scattering in weakly ferromagnetic Ni3Al has been investigated by means of multi-detector small-angle spectrometers at A.E.R.E. Harwell and I.L.L. Grenoble. Measurements are reported in three stoichiometric samples with residual resistivity ratios [RRR=ρ(293 K)/ρ(4.2 K)] of up to 40 and in a Ni rich specimen (Ni75.4Al24.6). The cross sections in stoichiometric specimens exhibit an approximately linear rise with temperature well below the Curie point (TC=41±1 K), a peak around TC and a fall approximately proportional to (T−TC)−1 above TC. This behaviour is interpreted in a Ginzburg-Landau model of magnetic fluctuations involving a single adjustable parameter, from which a spin correlation length around TC and an effective spin-wave stiffness well below TC may be derived. Finally the possible qualitative features of the overall transverse magnetic fluctuation spectrum of Ni3Al are examined and a simple model is noted which can account for the observed fall in magnetization at low temperatures.