May weather forecast
South Duxbury, MA

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Weather in May

The last month of the spring, May, is a refreshing month in South Duxbury, Massachusetts, with an average temperature fluctuating between 60.3°F (15.7°C) and 50°F (10°C).

Temperature

The start of May brings a shift in the average high-temperature, increasing from April's cool 50.9°F (10.5°C) to a moderate 60.3°F (15.7°C). During May, South Duxbury witnesses a consistent average low-temperature of 50°F (10°C).

Humidity

The average relative humidity in May in South Duxbury is 78%.

Rainfall

In South Duxbury, in May, during 12.4 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In South Duxbury, during the entire year, the rain falls for 120.2 days and collects up to 12.24" (311mm) of precipitation.

Snowfall

May through October are months without snowfall in South Duxbury.

Ocean temperature

In South Duxbury, Massachusetts, in May, the average water temperature is 49.1°F (9.5°C).
Note: Navigating the 49.1°F (9.5°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

In May, the average length of the day in South Duxbury is 14h and 35min.
On the first day of May, sunrise is at 5:37 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 8:11 pm EDT.

Sunshine

The average sunshine in May in South Duxbury is 8.6h.

UV index

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In May, the maximum UV index of 5 suggests these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

What is the usual temperature for South Duxbury in May?

The average high-temperature and low-temperature in South Duxbury, Massachusetts, during May are 60.3°F (15.7°C) and 50°F (10°C) respectively.

What is the average humidity in May in South Duxbury?

The average relative humidity in May in South Duxbury, Massachusetts, is 78%.

How many days does it rain in May in South Duxbury?

In South Duxbury, in May, during 12.4 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

When it does not snow in South Duxbury?

In South Duxbury, snow does not fall in May through October.

Does it snow in South Duxbury in May?

In May, in South Duxbury, it doesn't snow. April is the latest month when it typically snows.

What is the ocean temperature in May in South Duxbury?

In South Duxbury, the average seawater temperature in May is 49.1°F (9.5°C). Swimming in 49.1°F (9.5°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does South Duxbury have in May?

The average day length in May is 14h and 35min.

What time are sunrise and sunset in May in South Duxbury?

On the first day of May, sunrise is at 5:37 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 8:11 pm EDT.

How long on average sun shines in May in South Duxbury?

In May, the average sunshine duration in South Duxbury, Massachusetts, is 8.6h.

How high is the UV index in May in South Duxbury?

The average daily maximum UV index in May in South Duxbury is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
50.9°F 10.5°C
60.3°F 15.7°C
68.4°F 20.2°C
Average low temperature
41.5°F 5.3°C
50°F 10°C
58.5°F 14.7°C
Average pressure
29.97" 761mmHg
30.01" 762mmHg
29.93" 760mmHg
Average wind speed
11.2mph 18km/h
9.6mph 15.4km/h
8.9mph 14.3km/h
Average max. wind speed
12mph 19.3km/h
10.3mph 16.6km/h
9.6mph 15.4km/h
Average wind speed gusts
18.8mph 30.3km/h
16.8mph 27km/h
15.8mph 25.4km/h
Average humidity
75%
78%
80%
Average rainfall
1.1" 28mm
0.94" 24mm
1.1" 28mm
Average rainfall days
12
12.4
12.1
Average snowfall
0.16" 4mm
0" 0mm
0" 0mm
Average snowfall days
0.6
0
0
Average sea temperature
43.2°F 6.2°C
49°F 9.4°C
58.2°F 14.6°C
Average daylight
13h 2min
14h 4min
15h 1min
Average sunshine
8h 2min
8h 4min
9h 2min
Average sunshine days
16.1
16.5
16.3
Average UV index
3
5
5
Average cloud cover
45%
44%
38%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
South Duxbury, MA

Average temperature in May - South Duxbury, MA
  • Average high temperature in May: 60.3°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 May: 50°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).

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Average pressure in May
South Duxbury, MA

Average pressure in May - South Duxbury, MA
  • Average pressure in May: 30.01"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).

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Average wind speed in May
South Duxbury, MA

Average wind speed in May - South Duxbury, MA
  • Average wind speed in May: 9.6mph

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).

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Average humidity in May
South Duxbury, MA

Average humidity in May - South Duxbury, MA
  • Average humidity in May: 78%

The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March and November (74%).

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Average rainfall in May
South Duxbury, MA

Average rainfall in May - South Duxbury, MA
  • Average rainfall in May: 0.94"

The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days in May
South Duxbury, MA

Average rainfall days in May - South Duxbury, MA
  • Average rainfall days in May: 12.4 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).

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Average snowfall in May
South Duxbury, MA

Average snowfall in May - South Duxbury, MA
  • Average snowfall in May: 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").

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Average snowfall days in May
South Duxbury, MA

Average snowfall days in May - South Duxbury, MA
  • Average snowfall days in May: 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).

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Average sea temperature in May
South Duxbury, MA

Average sea temperature in May - South Duxbury, MA
  • Average sea temperature in May: 49°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).

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Average daylight in May /
Average sunshine in May
South Duxbury, MA

Average daylight in May / Average sunshine in May - South Duxbury, MA
  • Average daylight in May: 14h and 4min

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 May: 8h and 4min

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).

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Average sunshine days in May
South Duxbury, MA

Average sunshine days in May - South Duxbury, MA
  • Average sunshine days in May: 16.5 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).

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Average UV index in May
South Duxbury, MA

Average UV index in May - South Duxbury, MA
  • Average UV index in May: 5

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).

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Average cloud cover in May
South Duxbury, MA

Average cloud cover in May - South Duxbury, MA
  • Average cloud cover in May: 44

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in May
South Duxbury, MA

Average visibility in May - South Duxbury, MA
  • Average visibility in May: 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).

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South Duxbury, Massachusetts, USA

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