May weather forecast
West Harwich, MA

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Weather in May

May, the last month of the spring in West Harwich, is a fresh month, with an average temperature ranging between max 55°F (12.8°C) and min 51.3°F (10.7°C).

Temperature

May sees a marginal temperature increase, moving from a chilly 47.1°F (8.4°C) in April to a fresh 55°F (12.8°C). West Harwich, during the May nights, maintains an average temperature of 51.3°F (10.7°C), closely aligned with its daytime readings.

Humidity

In May, the average relative humidity in West Harwich, Massachusetts, is 83%.

Rainfall

In West Harwich, Massachusetts, in May, it is raining for 12.5 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 129 rainfall days, and 14.21" (361mm) of precipitation is accumulated.

Snowfall

May through November are months without snowfall in West Harwich.

Daylight

In West Harwich, the average length of the day in May is 14h and 33min.
On the first day of the month, sunrise is at 5:35 am and sunset at 7:39 pm. On the last day of May, in West Harwich, sunrise is at 5:08 am and sunset at 8:08 pm EDT.

Sunshine

The average sunshine in May in West Harwich is 8.6h.

UV index

In West Harwich, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: During May, 4 as the daily maximum UV index converts into the following advice:
Take precautions - Protection against sun damage is advised. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What are the temperatures in West Harwich in May?

In West Harwich, 55°F (12.8°C) is the average high-temperature and 51.3°F (10.7°C) is the average low-temperature during May.

What is the average humidity in May in West Harwich?

In May, the average relative humidity in West Harwich is 83%.

How much does it rain in West Harwich in May?

In West Harwich, during May, the rain falls for 12.5 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When it does not snow in West Harwich?

May through November are months without snowfall.

Does it snow in West Harwich in May?

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

What is the average length of the day in May in West Harwich?

The average day length in May in West Harwich is 14h and 33min.

What time are sunrise and sunset in May in West Harwich?

On the first day of May in West Harwich, sunrise is at 5:35 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:08 pm EDT.

How many hours of sunshine does West Harwich have in May?

The average sunshine duration in May is 8.6h.

What is the UV index intensity in May in West Harwich?

In West Harwich, Massachusetts, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
West Harwich, MA

Average temperature in May - West Harwich, MA
  • Average high temperature in May: 55°F

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in May
West Harwich, MA

Average pressure in May - West Harwich, MA
  • Average pressure in May: 30.02"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
West Harwich, MA

Average wind speed in May - West Harwich, MA
  • Average wind speed in May: 12.5mph

The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

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Average humidity in May
West Harwich, MA

Average humidity in May - West Harwich, MA
  • Average humidity in May: 83%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in May
West Harwich, MA

Average rainfall in May - West Harwich, MA
  • Average rainfall in May: 1.14"

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").

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Average rainfall days in May
West Harwich, MA

Average rainfall days in May - West Harwich, MA
  • Average rainfall days in May: 12.5 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall in May
West Harwich, MA

Average snowfall in May - West Harwich, MA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in May
West Harwich, MA

Average snowfall days in May - West Harwich, MA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
West Harwich, MA

Average daylight in May / Average sunshine in May - West Harwich, 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 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days in May
West Harwich, MA

Average sunshine days in May - West Harwich, MA
  • Average sunshine days in May: 16.4 days

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).

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Average UV index in May
West Harwich, MA

Average UV index in May - West Harwich, MA
  • Average UV index in May: 4

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
West Harwich, MA

Average cloud cover in May - West Harwich, MA
  • Average cloud cover in May: 43

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in May
West Harwich, MA

Average visibility in May - West Harwich, 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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West Harwich, Massachusetts, USA

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