Portsmouth weather
At 6:30 PM local time it was clear and 8°C (47°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Portsmouth, Rhode Island, United States.
Current conditions
- Clouds
- 0%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Dec–Mar
About Portsmouth weather
Is it raining in Portsmouth right now?
No. It’s clear and 8° right now. Little to no rain in the next 24 hours.
What’s the weather like in Portsmouth this week?
Over the next 7 days, expect highs of 13–18° and lows of 1–15°. Rain is likely on 1 of 7 days (Thursday). The driest day looks like Saturday.
Has it been raining in Portsmouth lately?
Barely. The past 7 days were mostly dry, with 0.0 mm of rain in total.
What should I pack for Portsmouth?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Portsmouth weather by month
When is the best time to visit Portsmouth?
Based on weather alone, the best time to visit Portsmouth is May–Sep, according to NASA's 2001–2025 climate averages. Dec–Mar tends to be the least pleasant. Average highs run from 3°C (37°F) in January to 26°C (79°F) in August.
What is the rainiest month in Portsmouth?
October is the wettest month, with about 119 mm (4.7 in) of rain on average. February is the driest, with about 81 mm (3.2 in).
What is the hottest month in Portsmouth?
August is the warmest, with average highs of 26°C (79°F) and lows of 19°C (66°F). January is the coolest, with highs of 3°C (37°F) and lows of -3°C (26°F).
Does Portsmouth have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is October at about 119 mm (4.7 in).
How warm is the sea in Portsmouth?
The sea is warmest in August at about 22°C (72°F) and coolest in February at about 4°C (39°F). It is comfortable for swimming (22°C or more) in Aug.
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months