July weather forecastSouth Duxbury, MA
July
Weather in July
July in South Duxbury, Massachusetts, is a moderately hot summer month, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 75.7°F (24.3°C).Temperature
During July and August, South Duxbury registers its highest temperatures, averaging a high of 75.7°F (24.3°C).Humidity
The months with the highest humidity are June and July, with an average relative humidity of 80%.Rainfall
The month with the most rainfall is July, when the rain falls for 13.2 days and typically aggregates up to 1.34" (34mm) of precipitation.Snowfall
May through October are months without snowfall in South Duxbury.Ocean temperature
In July, the average ocean temperature in South Duxbury, Massachusetts, is 65.8°F (18.8°C).Note: Most people do not find pleasure in swimming when the water temperature is 65.8°F (18.8°C). Breathing becomes increasingly difficult to manage as the water temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
In South Duxbury, the average length of the day in July is 14h and 53min.On the first day of July, sunrise is at 5:11 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:02 pm EDT.
Sunshine
In South Duxbury, the average sunshine in July is 10.4h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 6 in July converts into the following recommendations:
Fend off overexposure. Sun protection is vital. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
South Duxbury, MA
- Average high temperature in July: 75.7°F
The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in July: 65.8°F
The months with the highest average low temperature are July and August (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in July
South Duxbury, MA
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
South Duxbury, MA
- Average wind speed in July: 8.3mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in July
South Duxbury, MA
- Average humidity in July: 80%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in July
South Duxbury, MA
- Average rainfall in July: 1.34"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in July
South Duxbury, MA
- Average rainfall days in July: 13.2 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in July
South Duxbury, MA
- Average snowfall in July: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
South Duxbury, MA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in July
South Duxbury, MA
- Average sea temperature in July: 65.9°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in July /
Average sunshine in July
South Duxbury, MA
- Average daylight in July: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 10h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in July
South Duxbury, MA
- Average sunshine days in July: 15.7 days
The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in July
South Duxbury, MA
- Average UV index in July: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
South Duxbury, MA
- Average cloud cover in July: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in July
South Duxbury, MA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
