Sweden facts
Capital: Stockholm
Language: Swedish
Population: 9.3 million
Currency: 1 krona
Area: 450,000 km² (174,000 sq mi)
Political system: Parliamentary democracy
August weather in Uppsala:
August is normally a pleasantly warm month, but it can be cool in the evening.
Average temperatures: max 20°C (60°F), min 10°C (44°F).
Average monthly rainfall: 75 mm (3 ins)
So we suggest you bring summer clothing, but add something warm that you can wear in the evenings. An umbrella or rain-wear is recommended. If you enjoy swimming, pack your swim-wear.
Some useful and amusing links:
https://sweden.se/quick-facts/
https://www.cia.gov/library/publications/the-world-factbook/geos/sw.html
https://facts.randomhistory.com/sweden-facts.html
https://www.factslides.com/s-Sweden
https://www.xe.com/currencyconverter/