Uppsala's Tourist information Office is well equipped with all sorts of brochures about the city and the Uppland region as well as Sigtuna.
So after arrival to the city by train, I directly went to the Tourist Information Office, which is located more or less opposite of the train station.
The guy in charge spoke good English and was friendly and helpful. Besides a free Uppsala map, I also picked up the "What's on Uppsala - Tourist Magazine", a map about the Uppland province, some brochures about Sigtuna and a very useful timetable about bus connections to Sigtuna.
Unfortunately, he couldn't explain the public transport system of the city and region to my full satisfaction, but tried to sell me the Uppsala Card (Uppsala Kortet) instead. However, I later found this out at the UL office in the train station.
Uppsala's Tourist information Office can be found at the busy street Kungsgatan 59, right in the heart of the city centre. It is located in close vicinity to the train and bus station.
Address: Tourist Information Office, Kungsgatan 59, Uppsala
There is no special rainy season
Avg. Temp. in Spring: max.: 4 – 15°C ( 39 - 59°F ); min: -3 - 5°C ( 27 - 41°F )
Avg. Temp. in Summer: max.: 19 – 22°C ( 66 - 71°F ); min: 10 - 14°C ( 50 - 57°F )
Avg. Temp. in Autumn: max.: 5 – 17°C ( 41 - 63°F); min: 1 - 9°C ( 34 – 49°F )
Avg. Temp. in Winter: max.: 0 – 1°C ( 32 - 34°F); min: -3 - -2°C ( 27 - 30°F )
Miscellaneous: Again - if you are a student, or have some kind of student ID, bring it, if you plan to stay for at least a few days. You can then get a guest ID to get into the student clubs, which are, after all, the best places to go dancing or drinking and socialising, and not the least, much cheaper than other restaurants/nightclubs!