Instability in the world economy and shifts in currency exchange rates are expected to continue to affect Vaisala's business. Due to the structure of Vaisala's customer base, the company's market situation is expected to remain mostly unchanged in 2009. Vaisala's growth is expected to continue in 2009, but uncertainty towards the end of the year has increased.
 
Seasonal variations are typical of Vaisala's business, and therefore the first quarter will probably be weaker than subsequent ones.