May weather forecast
Bar Harbor, ME

The popular tourist spot of Bar Harbor in Maine, within the Mount Desert Island
The popular tourist spot of Bar Harbor in Maine, within the Mount Desert Island

Weather in May

May, the last month of the spring in Bar Harbor, is a moderate month, with an average temperature varying between 58.6°F (14.8°C) and 44.2°F (6.8°C).

Temperature

In Bar Harbor, the average high-temperature in May rises from a frosty 48.6°F (9.2°C) in April to a moderate 58.6°F (14.8°C). The average low-temperature, in Bar Harbor, is 44.2°F (6.8°C).

Humidity

In Bar Harbor, the average relative humidity in May is 78%.

Rainfall

In Bar Harbor, it is raining for 14.8 days, with typically 2.28" (58mm) of accumulated precipitation. In Bar Harbor, during the entire year, the rain falls for 142.1 days and collects up to 32.28" (820mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, Bar Harbor aggregates 0.08" (2mm) of snow. In Bar Harbor, during the entire year, snow falls for 48.1 days and aggregates up to 23.82" (605mm) of snow.

Ocean temperature

In Bar Harbor, the average seawater temperature in May is 44.2°F (6.8°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

The average length of the day in May is 14h and 49min.
On the first day of the month, sunrise is at 5:23 am and sunset at 7:36 pm. On the last day of May, sunrise is at 4:52 am and sunset at 8:09 pm EDT.

Sunshine

The average sunshine in May is 7.8h.

UV index

The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in May in Bar Harbor?

The average high-temperature, in May, is 58.6°F (14.8°C), while the average low-temperature is 44.2°F (6.8°C).

What is the average humidity in May in Bar Harbor?

The average relative humidity in May in Bar Harbor is 78%.

How many days does it rain in May in Bar Harbor?

In Bar Harbor, Maine, in May, it is raining for 14.8 days, with typically 2.28" (58mm) of accumulated precipitation.

What is the last month it snows in Bar Harbor?

May is the last month it regularly snows in Bar Harbor. During 0.1 snowfall days, in May, Bar Harbor aggregates 0.08" (2mm) of snow.

How cold is the water in May in Bar Harbor?

In Bar Harbor, in May, the average water temperature is 44.2°F (6.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in May in Bar Harbor?

In May, the average day length is 14h and 49min.

What time are sunrise and sunset in May in Bar Harbor?

In May, on the first day of the month, sunrise is at 5:23 am and sunset at 7:36 pm. On the last day of the month, in Bar Harbor, Maine, sunrise is at 4:52 am and sunset at 8:09 pm EDT.

How many hours of sunshine does Bar Harbor have in May?

In Bar Harbor, the average sunshine duration in May is 7.8h.

What is the UV index reading in May in Bar Harbor?

The average daily maximum UV index in May in Bar Harbor, Maine, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bar Harbor, ME

Average temperature in May - Bar Harbor, ME
  • Average high temperature in May: 58.6°F

The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in May: 44.2°F

The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

[Resources]

Average pressure in May
Bar Harbor, ME

Average pressure in May - Bar Harbor, ME
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed in May
Bar Harbor, ME

Average wind speed in May - Bar Harbor, ME
  • Average wind speed in May: 7.6mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

[Resources]

Average humidity in May
Bar Harbor, ME

Average humidity in May - Bar Harbor, ME
  • Average humidity in May: 78%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).

[Resources]

Average rainfall in May
Bar Harbor, ME

Average rainfall in May - Bar Harbor, ME
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").

[Resources]

Average rainfall days in May
Bar Harbor, ME

Average rainfall days in May - Bar Harbor, ME
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).

[Resources]

Average snowfall in May
Bar Harbor, ME

Average snowfall in May - Bar Harbor, ME
  • Average snowfall in May: 0.08"

The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in May
Bar Harbor, ME

Average snowfall days in May - Bar Harbor, ME
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average sea temperature in May
Bar Harbor, ME

Average sea temperature in May - Bar Harbor, ME
  • Average sea temperature in May: 44.3°F

The best month for swimming (with the highest average sea temperature) is August (56.8°F).
The coldest month (with the lowest average sea temperature) is March (38.6°F).

[Resources]

Average daylight in May /
Average sunshine in May
Bar Harbor, ME

Average daylight in May / Average sunshine in May - Bar Harbor, ME
  • Average daylight in May: 14h and 49min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in May: 7h and 48min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

[Resources]

Average sunshine days in May
Bar Harbor, ME

Average sunshine days in May - Bar Harbor, ME
  • Average sunshine days in May: 14.5 days

The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).

[Resources]

Average UV index in May
Bar Harbor, ME

Average UV index in May - Bar Harbor, ME
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in May
Bar Harbor, ME

Average cloud cover in May - Bar Harbor, ME
  • Average cloud cover in May: 50

The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).

[Resources]

Average visibility in May
Bar Harbor, ME

Average visibility in May - Bar Harbor, ME
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location