Vaisala - Company Announcement

Invitation to Vaisala's Annual General Meeting

Stock exchange release Febrauary 17, 2009 at 9:30 am


Invitation to Vaisala's Annual General Meeting

Vaisala Oyj's Annual General Meeting will be held at 6 p.m. on
Thursday March 26, 2009, at the company's head office, Vanha
Nurmijärventie 21, 01670 Vantaa.

The following items will be presented at the Annual General Meeting:

The issues defined in Section 13 of the Group's Articles of
Association and the Limited Liability Companies Act to be dealt with
at Annual General Meetings. The Agenda does not include any other
matters for decision. The Agenda includes the items associated with
calling the meeting to order according to normal Annual General
Meeting practice.
At the meeting, the Agenda will include the CEO's review, given in
conjunction with the presentation of the financial statements. The
review is not a matter for decision.

Distribution of profit and remuneration of the members of the Board

The Board of Directors proposes to the Annual General Meeting that a
dividend of EUR 0.90 per share be paid for 2008. The dividend will be
paid to shareholders registered in the Register of Shareholders held
by Euroclear Finland Ltd (formerly the Finnish Central Securities
Depository Ltd) on the recorddate March 31, 2009. The Board proposes
that the dividend be paid on April 7, 2009.

The Board proposes to the Annual General Meeting that the
remuneration of the members of the Board of Directors to be elected
at the Annual General Meeting for the term until the close of the
Annual General Meeting in 2010 will be as follows: EUR 35,000 for the
Chairman and EUR 25,000 for each member.

Proposal for the election of the members of the Board of Directors
Board members Stig Gustavsson and Mikko Voipio are in turn to retire
by rotation. Shareholders representing more than 10 percent of all
the votes in the company have announced that they will propose to the
Annual General Meeting held on March 26, 2009 the re-election of Stig
Gustavsson and Mikko Voipio.

Proposal for the election of auditors and their fee
The Board proposes that PricewaterhouseCoopers Oy and Mr Hannu
Pellinen APA, the current Authorized Public Accountants of Vaisala
Oyj, be re-elected for the next term defined by the Articles of
Association. The Board of Directors further proposes that the
auditors' compensation will be based on reasonable invoicing
presented to the company.

Documentation

Documents relating to the financial statements and the documentation
for Annual General Meeting will be available on March 5, 2009 at the
company's head office in Vantaa, Vanha Nurmijärventie 21. On request,
copies will also be sent to shareholders. The material will also be
available on www.vaisala.com/investors by March 5, 2009 at the
latest.

Total number of shares and votes by series of shares

On February 13, 2009, the date of the invitation to the General
Annual Meeting, Vaisala Oyj had 18,218,364 shares, out of which
3,405,584 are series K shares and 14,812,780 are series A shares.
Each K share entitles its owner to 20 votes at a General Meeting
while each A share entitles its owner to 1 vote. The total number of
votes by all shares is 82,924,460 out of which the series K shares
represent 68,111,680 votes and series A shares 14,812,780 votes.

Notice to the attendees

1. Right of attendance and registration

Shareholders who are registered in the company's share register
maintained by Euroclear Finland Ltd (formerly the Finnish Central
Securities Depository Ltd) by March 16, 2009 have the right to attend
the Annual General Meeting. Shareholders whose shares have not been
transferred to the book-entry securities system also have the right
attend the Annual General Meeting, provided that such shareholders
were registered in the company's share register before 21 October
1994. In such cases, shareholders must present evidence that their
shareholding rights have not been transferred to the book-entry
securities system.

Shareholders wishing to attend the Annual General Meeting must
register by 4 p.m. on Tuesday, March 17, 2009 . Registration can be
made either by letter addressed to Vaisala Oyj, Nina Andersin,
P.O.Box 26, FIN-00421 Helsinki, Finland, by telefax to +358 9 8949
2206, by e-mail to nina.andersin@vaisala.com, or by telephone on
weekdays between 9 a.m. and 11 a.m., tel. +358 9 8949 2201.
Letters authorizing a proxy to vote on behalf of a shareholder should
be sent to the company before the expiry of the registration period.

Holders of nominee registered shares

Holders of nominee registered shares who wish to attend the Annual
General Meeting must be registered in the company's shareholders'
register by the record date March 16, 2009.



Vantaa February 13, 2009

Vaisala Oyj
Board of Directors