Curitiba has a humid subtropical climate with no dry season. The summers are mild and the winters are cool. The year round temperature oscillates between 7ºC and 30ºC, so when you go depends on what you want to do.
How to get there
US Citizens require a visa in order to enter Brazil. Citizens of Israel, Great Britain, and most EU countries do not require a visa for a stay of up to 90 days. If you are in doubt about whether you require a visa to enter Brazil, check with your embassy or online.
At restaurants a service charge of approximately 10% is generally added to the bill. It is always identified that this charge is not obligatory, and any more than this is certainly not expected. Taxi drivers do not expect to be tipped, but fares may be rounded up to the nearest Real so no one has to deal with change.