Climate Insights for Porvoo

The climate in Porvoo is cool. The average annual temperature is 7°C and approximately 715 mm of precipitation falls per year. Porvoo receives a notable amount of rainfall throughout the year, including during its driest month. Porvoo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, March, when temperatures can drop to -7°C. Snowfall occurs from January to December, with around 179cm accumulating over the season.The climate in Porvoo is cool. The average annual temperature is 44°F and approximately 28.2 in of precipitation falls per year. Porvoo receives a notable amount of rainfall throughout the year, including during its driest month. Porvoo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, March, when temperatures can drop to 20°F. Snowfall occurs from January to December, with around 70in accumulating over the season.

Temperatures in Porvoo vary considerably across the year, with a 29°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 22°C with a mean of 18°C. The coldest month is January, when overnight lows fall to -7°C and the daily average is -4°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.Temperatures in Porvoo vary considerably across the year, with a 52°F difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 72°F with a mean of 65°F. The coldest month is January, when overnight lows fall to 20°F and the daily average is 24°F. Daily temperature variation is modest, with an average difference of 13°F between highs and lows. The sharpest temperature change occurs between April and May, with a 12°F shift in average temperatures.

Porvoo is a relatively dry area, receiving approximately 715 mm of precipitation annually, which averages out to around 60 mm per month. The wettest month is July, averaging 82 mm of rainfall. August and October also tend to see above-average precipitation. The driest month is March, with just 40 mm. That's 42 mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 179cm accumulating over the season. January typically sees the most snow at around 49cm.Porvoo is a relatively dry area, receiving approximately 28.2 in of precipitation annually, which averages out to around 2.4 in per month. The wettest month is July, averaging 3.2 in of rainfall. August and October also tend to see above-average precipitation. The driest month is March, with just 1.6 in. That's 1.7 in less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 70in accumulating over the season. January typically sees the most snow at around 19in.

Porvoo is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.Porvoo is moderately windy, with an average annual wind speed of 8mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 9mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 7mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2mph between the calmest and windiest months.

The best time to visit Porvoo is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 76 mm per month. By contrast, January can be quite cold with temperatures dropping to -7°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Porvoo is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 63°F with modest rainfall averaging 3 in per month. By contrast, January can be quite cold with temperatures dropping to 20°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Porvoo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Porvoo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.