Portsmouth Waterfront, NH
Today’s Forecast:
Today’s Report:
Outdoor Events / Activities
Not Recommended for outdoor events / activities. High near 47°F. Low rain risk (11%). Temperatures outside comfort limits (47°F).
- Temp: Unfavorable weather factor
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Biking
Good for biking. High near 47°F. Low rain risk (11%).
- Temp: Marginal weather factor
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Paddling
Not Recommended for paddling. High near 47°F. Low rain risk (11%). Temperatures outside comfort limits (47°F).
- Temp: Unfavorable weather factor
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
About Portsmouth Waterfront
Portsmouth Waterfront includes harbor parks, the fast-moving Piscataqua River, island connections, outdoor events, walking districts, and regional bike and paddle access.
Make the Most of a Portsmouth Waterfront Day
Tides and current matter greatly for paddling, while fog and ocean wind can arrive despite warmer inland weather. Use city parks and shorter waterfront loops when conditions are uncertain.
Weather Tips for Portsmouth Waterfront
- Check coastal wind, fog, water temperature, tides or surf in addition to the inland temperature forecast.
- Wind, current, water temperature, waves, and lightning should guide water plans more than sunshine alone.
- After steady rain, favor paved paths or well-drained routes until natural surfaces recover.
- Spring mud, summer bugs, fall crowds, and winter ice can affect access even on a mild day.
Nearby Towns and Areas
This page can also be useful when planning outdoor time near:
- Prescott Park
- Peirce Island
- New Castle
- Kittery
- Piscataqua River
- Great Island Common
- South Mill Pond
Plan Around the Conditions
Use the forecast to choose the best version of a Portsmouth Waterfront day. Match elevation, wind, storms, water conditions, trail surfaces, road access, temperature, and daylight to the activity that gives your group the safest and most comfortable plan.
7-Day Forecast for Portsmouth Waterfront
Portsmouth Waterfront Weather by Season
Winter
Winter at Portsmouth Waterfront brings snow, ice, wind chill, short daylight, and changing road access. Shaded trails, parking areas, and bridges can stay icy through mild spells. Check current facility and road status before departure.
Spring
Spring around Portsmouth Waterfront is mud season, with snowmelt, soft trails, lingering high-elevation ice, and rising waterways. Cold water remains a serious factor even when the air feels warm. Black flies often become noticeable from late spring into early summer.
Summer
Summer at Portsmouth Waterfront brings the warmest weather, humidity, mosquitoes, and afternoon thunderstorm potential. Morning commonly offers calmer water and a larger safety margin before storms. Carry water and use shade breaks during hot periods.
Fall
Fall is a popular season at Portsmouth Waterfront, with cooler air, changing foliage, and generally comfortable outdoor conditions. Busy foliage weekends can affect roads, parking, and waterfront towns. Cold nights, early ice, and rapidly shortening daylight return late in the season.
Key Climate Data Points
- Annual average temperature: generally around 48–50°F, based on the relevant summit or surrounding regional context.
- Annual snowfall: commonly 40–60 inches; elevation and year-to-year storm tracks cause substantial variation.
- Warmest months: July and August are normally warmest, although high terrain and water exposure stay cooler.
- Coolest months: January and February are typically coldest, with wind chill often more important than temperature alone.
- Wettest season: late fall and early winter are often wettest.
- Driest season: summer is often the most dependable outdoor-event window.
- Best outdoor window: May through October for waterfront events, biking, and carefully planned paddling.