Booking with KLM 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Johannesburg OR Tambo Airport to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, the most affordable month to book a KLM flight from Johannesburg OR Tambo Airport to Porto in February, with an average price of R7 066. Conversely, traveling with KLM from Johannesburg OR Tambo Airport to Porto in September will be the most expensive, with an average cost of R13 320. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
In terms of precipitation, rainfall in Porto ranges from 18.0 - 195.0 inches per month. December is typically the wettest month, when rainfall can reach 195.0 mm. July is typically the driest time to visit Porto when rainfall is around 18.0 mm.
If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 9.0 C).
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