Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As May sets, the average high-temperature shows a slight increase, moving up from a chilly 46.9°F (8.3°C) in April to a fresh 54.3°F (12.4°C). Harwich records a mild decrease in temperature during the nights of May, averaging a still cool 50.5°F (10.3°C).Humidity
The average relative humidity in May is 84%.Rainfall
In Harwich, in May, during 14.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in Harwich, there are 142.4 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 33min.On the first day of the month, sunrise is at 5:35 am and sunset at 7:38 pm. On the last day of May, in Harwich, sunrise is at 5:08 am and sunset at 8:07 pm EDT.
Sunshine
In May, the average sunshine in Harwich is 8.4h.UV index
In May, the average daily maximum UV index in Harwich is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 4 translates into these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the average May temperature in Harwich?
What is the average humidity in May in Harwich?
How many days does it rain in May in Harwich?
When it does not snow in Harwich?
Does it snow in Harwich in May?
What is the average length of the day in May in Harwich?
What time are sunrise and sunset in May in Harwich?
How many hours of sunshine does Harwich have in May?
How high is the UV index in May in Harwich?
Average temperature in May
Harwich, MA
- Average high temperature in May: 54.3°F
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in May
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).
Average wind speed in May
Harwich, MA
- Average wind speed in May: 13.2mph
The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in May
Harwich, MA
- Average humidity in May: 84%
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in May
Harwich, MA
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in May
Harwich, MA
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in May
Harwich, MA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Harwich, 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, September and October (0 days).
Average daylight in May /
Average sunshine in May
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 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in May
Harwich, MA
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).
Average UV index in May
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).
Average cloud cover in May
Harwich, MA
- Average cloud cover in May: 45
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
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).
Harwich, Massachusetts, USA
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