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Plymouth Weather in August
August in Plymouth averages 20°C (68°F) during the day and 14°C (57°F) at night. Quite a bit of rainfall is typical this month, with around 79 mm (3.1 in) on average. An umbrella is a good idea.
Rainfall in Plymouth in August
This month experiences about 14 days of rain according to historical data, averaging 79 mm (3.1 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Plymouth in August
The temperature in Plymouth in August is excellent. Daytime highs reach 20°C (68°F), with nights dropping to 14°C (57°F). This month falls in the summer season. Conditions are often most pleasant around the middle of the day. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, it has the peak temperatures of the year.
Sunshine in Plymouth in August
With approximately 205 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Plymouth.
Plymouth Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
20°C (68°F)
Chance of Rain
47%
Precipitation
79 mm (3.1 in)
Rainy days
14 days
Humidity
82%
Sunshine
205 hours
Percentage Sunshine
Plymouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Plymouth - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Plymouth typically stay consistent throughout August, with daily highs averaging around 20°C (68°F). Nights are cool, with lows around 13°C (55°F).
Average temperatures in August
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 August
Historical weather records for Plymouth in August
Browse day-by-day weather records for Plymouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Plymouth historical weather extremes in August
The extremes listed below come from historical weather data collected in Plymouth from 1976 through 2026.
- The hottest August day on record in Plymouth reached 32°C (90°F) (August 12, 2022).
- The coldest August day was on August 26, 1986, with a maximum of 14°C (57°F).
- Nighttime temperatures dropped to 6°C (43°F) on August 21, 2014, marking the coldest August night on record.
- Peak precipitation in August occurred on August 12, 2004, when 46 mm (1.8 in) of precipitation was measured.
Best Places in the United Kingdom in August
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Plymouth in August
Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Plymouth in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Plymouth 3-Day Forecast
More climate data for Plymouth
Temperature Rainfall Sunshine Humidity
See the full Plymouth climate overview or explore weather in the United Kingdom.
Popular in August
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
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