Portsmouth Weather in August

During August, Portsmouth experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 22°C (72°F). Expect quite a bit of rainfall. Around 129 mm (5.1 in) is typical.

Rainfall in Portsmouth in August

Typically around 11 days of rainfall are expected, averaging 129 mm (5.1 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 August

If you're visiting Portsmouth in August, expect highs of 31°C (88°F) and overnight lows around 22°C (72°F). It's usually most comfortable outside during the morning and later in the day. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors.

Sunshine in Portsmouth in August

The month enjoys around 258 hours of sunshine, creating mostly sunny days with good weather conditions.

If you prefer enjoying temperate temperatures and rain-free days, April typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
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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 August

Min Temperature 22°C (72°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 37%  

Precipitation 129 mm (5.1 in)  

Rainy days 11 days  

Humidity 74% *  

Sunshine 258 hours *  

Percentage Sunshine 62% *  

* Data from: Hampton, the United States of America (22 KM, 13 Miles).

What to Wear in Portsmouth in August

Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Portsmouth in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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.

More climate data for Portsmouth

Temperature Rainfall Sunshine Humidity

See the full Portsmouth climate overview or explore weather in the United States of America.