Summerside

What is the climate like in Summerside?

The best time to visit Summerside is typically August – October, with trip comfort peaking in September (7.1/10). Summerside is warmest in July, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically July and the driest is October; the year sees roughly 50 in (1259 mm) of precipitation.

• Best time to visitAugust – October — comfort peaks in September (7.1/10)
• Warmest monthJuly — average high 86°F (30°C)
• Coolest monthJanuary — average low 27°F (-3°C)
• Wettest monthJuly (5.1 in (129 mm))
• Driest monthOctober (3.1 in (78 mm))
• Annual precipitation50 in (1259 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromCincinnati Muni AP Lunken Fld, 11 km away (1949-2026)