United StatesAverage weather for Portsmouth in July
It's hot in July in Portsmouth with an average temperature of 30°C. Temperatures this month range from a low of 28°C to a high of 31°C. At night, you can expect temperatures between 19°C and 22°C.
Start of July
The month of July starts in Portsmouth with hot temps, averaging around 30°C during the day and nights around 21°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid July
By mid-July, daytime temps rise to around 31°C, with nights around 21°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of July
By the end of July, the average daytime temperature in Portsmouth is around 30°C, while nighttime temps are about 20°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Because temperatures drop in the evening, wearing layers is recommended.
In July, there is an average of 106 mm of precipitation, spread over 11 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Portsmouth in July |
New York | ||
|---|---|---|---|
 Average temperature |
30°C | 31°C | |
 Max. temperature |
31°C | 33°C | |
| Min. temperature |
28°C | -5°C | |
 Total precipitation |
106 mm | 160 mm | |
| Rainy days |
11 days | 18 days | |
June
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is July a good time to visit Portsmouth?
Looking for sun? July isn’t a good month to be in Portsmouth. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 35°C in 2020, Portsmouth reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 20°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 25°C.
Check out the climate of Portsmouth for all months and discover the best travel time
Daily Temperature in July in Portsmouth
This chart shows the average daily high and low temperatures in July for Portsmouth, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in July in Portsmouth
The chart below shows the average daily precipitation in July for Portsmouth, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for July, you can expect about 11 days of precipitation in Portsmouth.
Daily UV index in July in Portsmouth
This chart shows the average daily UV index in July in Portsmouth, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in July in Portsmouth over the years
This chart shows the average temperature in July in Portsmouth, measured in degrees Celsius, over the past few years.
Total precipitation in July in Portsmouth over the years
This chart shows the average precipitation in July in Portsmouth, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in July for Portsmouth
Click on any day in July to get detailed info about the usual weather on that day in Portsmouth. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in July in Portsmouth
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Average weather in Portsmouth by month
Click on a month below to see detailed weather info for Portsmouth. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Portsmouth for all months at once
