Sea Temperature in Dennis in August

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Complete information on the sea temperature range in the Atlantic Ocean in Dennis in August. Historical daily data. Climate details for August. Tips on swimming conditions and beach relaxation in Dennis. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Dennis Climate and Swimming Opportunities in August

Dennis lies within the Massachusetts in United States. The average daytime temperature in Dennis in August is 79°F (26°C), while the nighttime average is 63°F (17°C). There are typically 10 rainy days during the month, with a total precipitation of 3.1 inches (78 mm). The daylight duration in August in Dennis is 14 hours, with an average of 8 hours of sunshine per day. The average wind speed in August is 10 mph (16 km/h), and the humidity level is around 76%.

The water temperature in Dennis in August ranges from 66°F to 70°F (19°C to 21°C). At the beginning of the month, the average temperature is around 68°F (20°C), shifting to 70°F (21°C) by mid-August and reaching 70°F (21°C) in the last ten days. Overall, the average sea temperature in Dennis for August is 70°F (21°C). Perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.

Frequently Asked Questions About Water Temperatures in August in Dennis