Decisions made by Vaisala Oyj's Extraordinary General Meeting 14 December, 2004

The Extraordinary General Meeting approved The Board of Directors' proposal for additional dividend of EUR 0.50 per share, totalling EUR 8,739,500, to be paid, in addition to the dividend approved by the Annual General Meeting on 18 March 2004 (EUR 0,75), on the basis of the Balance Sheet for the financial year that ended on 31 December, 2003.

The record date is 17 December, 2004. The date of the dividend payment is 28 December, 2004.