Well, according to the weather I have to disagree with mr. Papantoniou: It won't rain all the time. But in this time of the year it might rain quite often.
According to the speed-limit I have to agree ... 90km/h is wha will be the limit very often but on a lot of roads you want be able to drive that fast but the highways ("riksväg" should be the name) are ok.

Ok, you want't to photograph. Some spots that are interesting for you should be:
- All those small islands at the west and east coast.
- The lakes. This country is full of them and some are really beautiful.