Mid-spring · Weather & things to do
Portsmouth in April
Portsmouth warms up: highs climb to 49°F (10°C), from 40°F in March, with lows of 38°F (4°C) and about 4.7 in (119 mm) of rain.
Our comfort score puts it mid-table at 54/100, 7th of 12.
- Avg high
- 49°F (10°C)
- Avg low
- 38°F (4°C)
- Rain
- 4.7 in (119 mm)
- Humidity
- 82%
- Cloud cover
- 62%
- Daylight
- ~13 h 11 min
- Comfort score
- 54/100 · Fair
What April feels like
Afternoons only reach about 49°F (10°C), so plan on a warm jacket.
Nights cool to an average low of 38°F (4°C).
Some rain is likely, about 4.7 in (119 mm) in the month, so pack for a shower or two.
Plan around April
April sits mid-table; the best months are September.
- The year's biggest warm-up: highs jump 5°C (9°F) from March.
- Comfort improves from 40/100 in March to 54/100.
- Our Boston to Portland route recommends May – Oct, so April falls outside its suggested window.
What to pack for April
- Insulated jackethighs only 49°F
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost picks involve some walking
What to do in Portsmouth in April
Weather can go either way, so the picks below mix open-air spots with indoor backups.
The Black Trumpet
Bistro and upstairs wine bar in an old waterfront building.
Moxy
Chef Matt Louis's American tapas using New England ingredients.
USS Albacore Museum
Walk through a 1953 experimental submarine on dry land.
Odiorne Point State Park
Rocky shoreline trails and tide pools, plus the Seacoast Science Center.
Portsmouth Harbor Cruises
Narrated harbor and Isles of Shoals cruises from Ceres Street dock.
Nearby in April
- New Hampshire in April~42 mi · highs 56°F, 3.8 in rain · 4°C (7°F) warmer by day, drier
- Portland, Maine in April~48 mi · highs 46°F, 4.8 in rain · 2°C (3°F) cooler by day, about as wet
- Boston in April~51 mi · highs 56°F, 4.2 in rain · 4°C (6°F) warmer by day, about as wet
- White Mountains in April~87 mi · highs 31°F, 3.8 in rain or snow · 10°C (18°F) cooler by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Portsmouth in April: quick answers
Is April a good time to visit Portsmouth?
It's middling, scoring 54/100. The best months are September, at up to 88. Expect highs of 49°F (10°C) and 4.7 in (119 mm) of rain. Our Boston to Portland route recommends May – Oct, so April is outside its suggested window.
How cold is Portsmouth in April?
Average highs are 49°F (10°C) and average lows 38°F (4°C), making it the 6th-coldest month by daytime highs.
Does it rain a lot in Portsmouth in April?
Some: about 4.7 in (119 mm) of rain falls across April on average, the 4th-wettest month of the year. The annual total is about 52.6 in (1337 mm).
What should I pack for Portsmouth in April?
Bring insulated jacket (highs only 49°F), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most picks involve some walking).
Planning Portsmouth in April?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.