Isothermal hydrogen solubility in methanol has been measured at six temperatures: 248.41, 263.38, 278.01, 278.25, 291.20 and 308.20 K up to 3.4 MPa. Hydrogen solubility has been found an increasing function of temperature in the range of studied temperatures. The apparatus used in this work can be operated either as a static-analytic technique with a '' on line '' gas chromatograph or as a synthetic one. The static-analytic method takes advantage of a movable pneumatic capillary sampler (RolSi (TM), Armines' patent). The apparatus was used following a synthetic mode at 278.25 K from 0.04 to 0.33 MPa in order to compare the data obtained through the two techniques. The data are congruent. A comparison analysis is performed with measurements from Bezanehtak et al. [K. Bezanehtak, G.B. Combes, F. Dehghani, N.R. Foster, J. Chem. Eng. Data, 47 (2002) 161-168], Wainwright et al. [M.S. Wainwright, T. Ahn, D.L. Trimm, N.W. Cant, J. Chem. Eng. Data, 32 (1987) 22-24], Yorizane et al. [M. Yorizane, S. Sadamoto, H. Masuoka, Y. Eto, Kogyo Kagaku Zasshi, 72 (1969) 2174-2177] and Liu et al. [Q. Liu, F. Takemura, A. Yabe, J. Chem. Eng. Data, 41 (1996) 1141-1143]. The Henry's law constants were calculated, and a temperature dependent empirical correlation has been produced, based on experimental data. (c) 2004 Elsevier B.V. All rights reserved.