Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April's onset in Portsmouth brings a temperature rise, moving from a cool 54.5°F (12.5°C) in March to a comfortable 64.9°F (18.3°C). An average low-temperature of 52°F (11.1°C) is recorded in the month of April.Humidity
The average relative humidity in April is 75%.Rainfall
In April, the rain falls for 13 days. Throughout April, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 151.9 rainfall days, and 20.35" (517mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Ocean temperature
In Portsmouth, the average seawater temperature in April is 54.1°F (12.3°C).Note: If planning to swim in 54.1°F (12.3°C) under 50°F (10°C), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 55.4°F (13°C) is not much warmer.
Daylight
In Portsmouth, the average length of the day in April is 13h and 10min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:27 pm. On the last day of April, sunrise is at 6:11 am and sunset at 7:53 pm EDT.
Sunshine
The average sunshine in April is 9.6h.UV index
The average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 4 during April leads to these instructions:
Ensure safety - Sun damage prevention is strongly urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Portsmouth in April?
What is the average humidity in April?
How many days does it rain in April?
When it does not snow?
Does it snow in April?
What is the ocean temperature in April in Portsmouth?
How many hours of daylight does Portsmouth have in April?
When are sunrise and sunset in April in Portsmouth?
How many hours of sunshine does Portsmouth have in April?
What is the UV index reading in April?
Average temperature in April
Portsmouth, VA
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (45.9°F).
- Average low temperature in April: 52°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).
Average pressure in April
Portsmouth, VA
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in April
Portsmouth, VA
- Average wind speed in April: 10.5mph
The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).
Average humidity in April
Portsmouth, VA
- Average humidity in April: 75%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are July and November (74%).
Average rainfall in April
Portsmouth, VA
- Average rainfall in April: 1.46"
The wettest month (with the highest rainfall) is August (2.52").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in April
Portsmouth, VA
- Average rainfall days in April: 13 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in April
Portsmouth, VA
- Average snowfall in April: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Portsmouth, VA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is January (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in April
Portsmouth, VA
- Average sea temperature in April: 54.2°F
The best month for swimming (with the highest average sea temperature) is August (80°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).
Average daylight in April /
Average sunshine in April
Portsmouth, VA
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in April: 9h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in April
Portsmouth, VA
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in April
Portsmouth, VA
- Average UV index in April: 4
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in April
Portsmouth, VA
- Average cloud cover in April: 36
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in April
Portsmouth, VA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Portsmouth, Virginia, USA
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