Currently, September is the cheapest month in which you can book a flight from North America to Sarnia (average of C$ 187). Flying from North America to Sarnia in December is currently the most expensive (average of C$ 862). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
In terms of precipitation, rainfall in Sarnia ranges from 51.0 - 105.0 mm per month. September is typically the wettest month, when rainfall can reach 105.0 mm. February is typically the driest time to visit Sarnia when rainfall is around 51.0 mm.
If weather is an important factor for your trip to Sarnia, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
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