Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average sea temperature in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July, known for its average high temperature of 76.3°F (24.6°C) and an average low temperature of 62.6°F (17°C), is the warmest month.Humidity
The average relative humidity in July is 79%.Rainfall
In Portsmouth, in July, it is raining for 14.1 days, with typically 2.17" (55mm) of accumulated precipitation. In Portsmouth, during the entire year, the rain falls for 144.2 days and collects up to 27.48" (698mm) of precipitation.Snowfall
May through September are months without snowfall in Portsmouth.Ocean temperature
In Portsmouth, the average seawater temperature in July is 63.1°F (17.3°C).Note: For most people, swimming in water at 63.1°F (17.3°C) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in July is 14h and 59min.On the first day of the month, sunrise is at 5:07 am and sunset at 8:26 pm. On the last day of July, sunrise is at 5:33 am and sunset at 8:05 pm EDT.
Sunshine
In Portsmouth, the average sunshine in July is 10.3h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in July interprets into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
What are the temperatures in July?
What is the average humidity in July in Portsmouth?
How many days does it rain in July?
When it does not snow?
What is the ocean temperature in July?
What is the average length of the day in July?
What time are sunrise and sunset in July?
How many hours of sunshine does Portsmouth have in July?
What is the month with the highest UV index?
How high is the UV index in July in Portsmouth?
Average temperature in July
Portsmouth, NH
- Average high temperature in July: 76.3°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in July: 62.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in July
Portsmouth, NH
- Average pressure in July: 29.94"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Portsmouth, NH
- Average wind speed in July: 6.6mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in July
Portsmouth, NH
- Average humidity in July: 79%
The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in July
Portsmouth, NH
- Average rainfall in July: 2.17"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in July
Portsmouth, NH
- Average rainfall days in July: 14.1 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in July
Portsmouth, NH
- Average snowfall in July: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Portsmouth, NH
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in July
Portsmouth, NH
- Average sea temperature in July: 63.1°F
The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).
Average daylight in July /
Average sunshine in July
Portsmouth, NH
- Average daylight in July: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in July: 10h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in July
Portsmouth, NH
- Average sunshine days in July: 14.8 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in July
Portsmouth, NH
- Average UV index in July: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
Portsmouth, NH
- Average cloud cover in July: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in July
Portsmouth, NH
- Average visibility in July: 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, New Hampshire, USA
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