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Dumbarton Weather in August
August in Dumbarton brings pleasant temperatures, with daytime highs of 19°C (66°F) and nights around 11°C (52°F). Quite a bit of rainfall is expected, around 126 mm (5 in), so pack an umbrella.
Rainfall in Dumbarton in August
Climate statistics over the past 30 years suggest around 18 days of rain, with 126 mm (5 in) average for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Dumbarton in August
Temperatures in Dumbarton in August top out at 19°C (66°F) and drop to 11°C (52°F) overnight. August is in the summer season. Conditions are often most pleasant around the middle of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Dumbarton in August
You can expect a moderate amount of sunlight, with approximately 145 hours. This means a pleasant mix of sun and overcast.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Dumbarton Temperature in August
Min Temperature
11°C (52°F)
Max Temperature
19°C (66°F)
Chance of Rain
61%
Precipitation
126 mm (5 in)
Rainy days
18 days
Humidity
75% *
Sunshine
145 hours *
Percentage Sunshine
29% *
* Data from: Glasgow, Scotland (12 KM, 7 Miles).
Dumbarton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dumbarton - and find the best time to visit.
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 Dumbarton 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. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Dumbarton in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
Dumbarton 3-Day Forecast
More climate data for Dumbarton
Temperature Rainfall Sunshine Humidity
See the full Dumbarton climate overview or explore weather in the United Kingdom.
Popular in August
Where to go in August - average daytime high across popular destinations.
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Hike the South West Coast Path
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