Guilford Weather in August

What's the weather like in Guilford (Connecticut) in August 2025?

The climate in Guilford during August can be summarized as warm, humid and a little damp.

August is in the summer in Guilford and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 17°C (62°F) is normal.

Guilford weather averages (imperial / metric)
Daytime temperature 26.8°C 80.2°F
Nightly temperature 16.7°C 62°F
Average temperature 21.7°C 71.1°F
Daily sunshine 9.1 hrs
Avg rainfall 96 mm 3.8 ins
Rainy days 9 days
Sea temperature 21.7°C 71°F
Humidity 74%
Windspeed 14.4kph 9 mph

On average August is the 5th wettest month of the year in Guilford with around 96mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.1 hours of sunshine per day.

August temperatures in Guilford

Guilford average temperature in August

August rainfall

Guilford average rain in August

August hourly sunshine

Guilford average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Guilford in August 2025.