Portsmouth

What is the climate like in Portsmouth?

The best time to visit Portsmouth is typically September – October, with trip comfort peaking in September (6.8/10). Portsmouth is warmest in July, when daily highs average 87°F (30°C), and coolest in January, when lows fall to about 28°F (-2°C). The wettest month is typically May and the driest is November; the year sees roughly 50 in of precipitation.

• Best time to visitSeptember – October — comfort peaks in September (6.8/10)
• Warmest monthJuly — average high 87°F (30°C)
• Coolest monthJanuary — average low 28°F (-2°C)
• Wettest monthMay (5.4 in)
• Driest monthNovember (3.1 in)
• Annual precipitation50 in