Portsmouth Weather in April
April in Portsmouth typically sees daytime highs of 13°C (55°F) and nighttime lows of 2°C (36°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Portsmouth in April
Typically around 11 days of rainfall are expected, averaging 111 mm (4.4 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Portsmouth in April
Expect highs of 13°C (55°F) in Portsmouth in April, with nights dropping to around 2°C (36°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 2°C (36°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Portsmouth in April
There are approximately 223 hours of sunshine this month, resulting in mostly clear days. Despite the cool temperatures, the sunshine makes it an enjoyable time to be outside.April in Portsmouth has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Portsmouth's climate page.
Portsmouth Temperature in April
Min Temperature
2°C (36°F)
Max Temperature
13°C (55°F)
Chance of Rain
38%
Precipitation
111 mm (4.4 in)
Rainy days
11 days
Humidity
62% *
Sunshine
223 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Portsmouth typically rise from around 10°C (50°F) at the start of April to approximately 16°C (61°F) by the end. Nights are cold, with lows typically ranging from 0°C (32°F) to 5°C (41°F).
Average temperatures in April
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in April
Historical weather for Portsmouth in April
Browse day-by-day weather records for Portsmouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Portsmouth historical weather extremes in April
Based on weather observations in Portsmouth between 1976 and 2026, these are the recorded extremes during April.
- The coldest night in April in Portsmouth was on April 7, 1982, with a minimum of -11°C (12°F).
Best Places in the United States of America in April
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in April →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Portsmouth in April
The weather can be unpredictable in April, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Portsmouth in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Portsmouth's climate page.
Temperature Rainfall Sunshine Humidity
See the full Portsmouth climate overview or explore weather in the United States of America.
