Summerside, Prince Edward Island, is in for an unsettled weather week, as Environment Canada forecasts a mix of sun, clouds, and periodic showers from June 29 through July 5, 2026. While no weather alerts are currently in effect, residents planning outdoor activities should prepare for changing conditions, especially mid-week when the chance of showers jumps to 60 percent.
This afternoon, conditions were comfortable with a temperature of 23.1°C and a humidex of 28. Overnight, fog patches are expected to develop and linger into Tuesday morning before clearing. Tuesday brings a mix of sun and cloud with a 30 percent chance of early showers, a risk of a thundershower, and a high of 25°C. The UV index is forecast at 7, which is high, so sunscreen, hats, and sunglasses are a must during sunny breaks.
The wet weather pattern intensifies through the work week. Wednesday will see a high of 23°C with a mix of sun and cloud, then cloudy skies and a 60 percent chance of showers Wednesday night. Thursday stays cloudy with another 60 percent chance of rain and a warmer high of 26°C. Health Canada recommends using sunscreen with SPF 30 or higher on days when the UV index is high.
Normally, early July in Summerside sees highs around 22°C and overnight lows near 12°C, but this week’s temperatures will run slightly above average. Prince Edward Island’s maritime climate usually keeps the Island warmer than neighboring provinces, with July and August being the driest months. Persistent south and southwesterly breezes from the Northumberland Strait help moderate summer humidity, and the region gets about one-third as many foggy days as Nova Scotia or New Brunswick.
Looking ahead, skies are expected to clear by Friday with cloudy periods and a more settled weekend. Sunrise is at 5:25 a.m. and sunset at 9:12 p.m., giving plenty of daylight for outdoor plans, but an umbrella is wise to keep handy through Thursday.
