Cool
Average highs are around 10°C, so pack for cooler days.
Weather Guide
Portsmouth, New Hampshire, United States Average Monthly Weather
Weather score38Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 14°C, sunshine averages 6.8h per day, and rainfall totals about 1077mm. Sea temperatures average 11°C across the year.
Annual weather
Annual averages
Temp
14°C
Rain
1077mm
Annual total
Sun
6.8h
Sea
11°C
Weather score
38
Poor avg
Seasonal climate calendar
Trip feel
Showers
Rainfall averages 126mm, so some wet days are possible.
Limited sun
Sunshine averages 4.5h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 10°C, so the water can feel cool.
Map
Weather map
Compare Portsmouth, New Hampshire, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
November10°C average high
November is on the cooler side of Portsmouth's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
November126mm average rain
November is one of Portsmouth's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
November4.5 hours average sun
November is one of Portsmouth's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
November10°C average sea
November is close to Portsmouth's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
Weather score
November21 weather score
November is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
Hotels in Portsmouth, New Hampshire, United States
Marriott
Renaissance Portsmouth-Norfolk Waterfront HotelPortsmouth, Virginia, USA
Sheraton Portsmouth Harborside HotelPortsmouth, New Hampshire, USA
AC Hotel Portsmouth Downtown/WaterfrontPortsmouth, New Hampshire, USA
Courtyard PortsmouthPortsmouth, New Hampshire, USA
Fairfield Inn Portsmouth SeacoastPortsmouth, New Hampshire, USA
Residence Inn PortsmouthPortsmouth, New Hampshire, USA