July weather forecastMattapoisett, MA
July
Weather in July
July is a moderately hot summer month in Mattapoisett, Massachusetts, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 66.4°F (19.1°C).Temperature
Mattapoisett reaches its highest average temperatures in July, measuring 78.4°F (25.8°C) at the peak and 66.4°F (19.1°C) at the lowest.Humidity
June and July, with an average relative humidity of 80%, are the most humid months in Mattapoisett.Rainfall
In July, the rain falls for 13.4 days. Throughout July, 1.5" (38mm) of precipitation is accumulated. In Mattapoisett, during the entire year, the rain falls for 133.2 days and collects up to 17.2" (437mm) of precipitation.Snowfall
In Mattapoisett, snow does not fall in May through October.Ocean temperature
In Mattapoisett, the average seawater temperature in July is 66.2°F (19°C).Note: Swimming in 66.2°F (19°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).
Daylight
In July, the average length of the day is 14h and 51min.On the first day of July, sunrise is at 5:13 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:01 pm EDT.
Sunshine
In Mattapoisett, the average sunshine in July is 10.4h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 6 during July translates into these guidelines:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Mattapoisett, MA
- Average high temperature in July: 78.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in July: 66.4°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in July
Mattapoisett, MA
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
Mattapoisett, MA
- Average wind speed in July: 8.1mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in July
Mattapoisett, 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, April and November (74%).
Average rainfall in July
Mattapoisett, MA
- Average rainfall in July: 1.5"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is September (1.06").
Average rainfall days in July
Mattapoisett, MA
- Average rainfall days in July: 13.4 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in July
Mattapoisett, MA
- Average snowfall in July: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Mattapoisett, MA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in July
Mattapoisett, MA
- Average sea temperature in July: 66.2°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in July /
Average sunshine in July
Mattapoisett, MA
- Average daylight in July: 14h and 48min
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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in July
Mattapoisett, MA
- Average sunshine days in July: 14.9 days
The months with the most sunshine days are November and December (18.3 days).
The month with the least sunshine days is April (14.4 days).
Average UV index in July
Mattapoisett, MA
- Average UV index in July: 6
The months with the highest UV index are June, 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
Mattapoisett, MA
- Average cloud cover in July: 32
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in July
Mattapoisett, 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).
