Climate Overview
The climate in St-Jean-Port-Joli is cool. The average annual temperature is 5°C and approximately 1244mm of precipitation falls per year. St-Jean-Port-Joli receives a notable amount of rainfall throughout the year, including during its driest month. St-Jean-Port-Joli is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -12°C. St-Jean-Port-Joli experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in St-Jean-Port-Joli vary considerably across the year, with a 34°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 22°C with a mean of 19°C. The coldest month is February, when overnight lows fall to -12°C and the daily average is -9°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.
Precipitation
St-Jean-Port-Joli is a fairly wet location, receiving approximately 1244mm of precipitation annually, which averages out to around 104mm per month. The wettest month is October, averaging 147mm of rainfall. June and April also tend to see above-average precipitation. The driest month is February, with just 76mm. That's 71mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. St-Jean-Port-Joli receives heavy snowfall, accumulating around 246cm annually from January through December. The snowiest month is January, with approximately 51cm. Winter travel should account for significant snow cover.
Wind
St-Jean-Port-Joli is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 18km/h in winter, 18km/h in spring, 16km/h in summer, 18km/h in autumn.
Seasons
88 days until Summer
It is currently spring in St-Jean-Port-Joli, which began on March 20, 2026. St-Jean-Port-Joli is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 22°C, while the coldest stretch bottoms out in February near -12°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from -7 to 14°C. Rainfall is heavy, totalling around 313mm across the season with a monthly average of 104mm. Winds are moderate at around 18km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 12 to 22°C. Rainfall is heavy, totalling around 320mm across the season with a monthly average of 107mm. Winds are moderate at around 16km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -2 to 18°C. Rainfall is heavy, totalling around 339mm across the season with a monthly average of 113mm. Expect around 30cm of snow accumulation during this period. Winds are moderate at around 18km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -12 to -2°C. Precipitation is moderate at around 271mm for the season, averaging 90mm per month. Expect around 137cm of snow accumulation during this period. Winds are moderate at around 18km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Best Time to Visit
The best time to visit St-Jean-Port-Joli is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 90mm per month. By contrast, February can be quite cold with temperatures dropping to -12°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.
Monthly Climate Data
The table below shows monthly climate averages for St-Jean-Port-Joli 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.
