April weather forecastSouthwest Harbor, ME
April
Weather in April
April is a frosty spring month in Southwest Harbor, Maine, with an average temperature fluctuating between 35.6°F (2°C) and 48.6°F (9.2°C).Temperature
Southwest Harbor's April weather brings a rise in high-temperatures, moving from an icy 37.2°F (2.9°C) in March to a chilly 48.6°F (9.2°C). An average low-temperature of 35.6°F (2°C) is common in Southwest Harbor during the nights of April.Humidity
In April, the average relative humidity in Southwest Harbor is 77%.Rainfall
In April, in Southwest Harbor, the rain falls for 15.5 days. Throughout April, 3.5" (89mm) of precipitation is accumulated. In Southwest Harbor, during the entire year, the rain falls for 142.1 days and collects up to 32.28" (820mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Southwest Harbor, in April, snow falls for 3.1 days, with typically accumulated 2.44" (62mm) of snow. Throughout the year, there are 48.1 snowfall days, and 23.82" (605mm) of snow is accumulated.Daylight
In Southwest Harbor, the average length of the day in April is 13h and 29min.On the first day of April, sunrise is at 6:12 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 7:36 pm EDT.
Sunshine
In Southwest Harbor, the average sunshine in April is 7.2h.UV index
The average daily maximum UV index in April in Southwest Harbor is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In April, the maximum UV index of 3 suggests this advice:
Make use of precautions - It is urged to ward off sun damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Southwest Harbor, ME
- Average high temperature in April: 48.6°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 April: 35.6°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).
Average pressure in April
Southwest Harbor, ME
- Average pressure in April: 29.95"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).
Average wind speed in April
Southwest Harbor, ME
- Average wind speed in April: 9.2mph
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).
Average humidity in April
Southwest Harbor, ME
- Average humidity in April: 77%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in April
Southwest Harbor, ME
- Average rainfall in April: 3.5"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in April
Southwest Harbor, ME
- Average rainfall days in April: 15.5 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).
Average snowfall in April
Southwest Harbor, ME
- Average snowfall in April: 2.44"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Southwest Harbor, ME
- Average snowfall days in April: 3.1 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).
Average daylight in April /
Average sunshine in April
Southwest Harbor, ME
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 7h and 12min
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).
Average sunshine days in April
Southwest Harbor, ME
- Average sunshine days in April: 11.2 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).
Average UV index in April
Southwest Harbor, ME
- Average UV index in April: 3
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).
Average cloud cover in April
Southwest Harbor, ME
- Average cloud cover in April: 54
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).
Average visibility in April
Southwest Harbor, ME
- Average visibility in April: 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).
