Weather will likely play an important role when you plan your trip to Lax, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 9°C, while the coldest months are January and February, with an average of -8°C. The rainiest months in Lax are July, August, June and May, with each month seeing an average of 189 mm of rainfall.