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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Southwest Harbor, Maine, is a freezing cold winter month, with temperature in the range of an average high of 29.7°F (-1.3°C) and an average low of 18.5°F (-7.5°C). January, noted for its average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 18.5°F (-7.5°C), is considered the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Southwest Harbor, is also a subzero cold month, with an average temperature ranging between max 30.7°F (-0.7°C) and min 18.9°F (-7.3°C). Southwest Harbor's weather in February displays an average high-temperature of a still freezing cold 30.7°F (-0.7°C), showing minor disparity from January's 29.7°F (-1.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Southwest Harbor, Maine, with an average temperature varying between 25.9°F (-3.4°C) and 37.2°F (2.9°C). The start of March brings a subtle shift in the average high-temperature, edging up from February's freezing cold 30.7°F (-0.7°C) to a cold 37.2°F (2.9°C). Weather in March »
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). 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). Weather in April »
Weather in May
May, the last month of the spring in Southwest Harbor, is a moderate month, with an average temperature ranging between max 58.6°F (14.8°C) and min 44.2°F (6.8°C). May brings a rise in the average high-temperature, transitioning from April's frosty 48.6°F (9.2°C) to a moderate 58.6°F (14.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a refreshing month in Southwest Harbor, Maine, with an average temperature fluctuating between 66°F (18.9°C) and 51.4°F (10.8°C). Southwest Harbor's transition into June sees a mild rise in the average high-temperature, edging from a mild 58.6°F (14.8°C) in May to a still refreshing 66°F (18.9°C). Weather in June »
Weather in July
July in Southwest Harbor, Maine, is a pleasant summer month, with temperature in the range of an average low of 58.1°F (14.5°C) and an average high of 73.2°F (22.9°C). A slight uplift in the average high-temperature marks July, adjusting from June's comfortable 66°F (18.9°C) to a pleasant 73.2°F (22.9°C). Weather in July »
Weather in August
The last month of the summer, August, is a moderately hot month in Southwest Harbor, Maine, with an average temperature varying between 57.7°F (14.3°C) and 73.4°F (23°C). August registers as the month with the highest average temperatures, reaching 73.4°F (23°C) at its peak and 57.7°F (14.3°C) at the lowest. Weather in August »
Weather in September
September, the first month of the autumn in Southwest Harbor, is also an enjoyable month, with an average temperature fluctuating between 52.7°F (11.5°C) and 67.1°F (19.5°C). The advent of September brings a subtle shift in temperature, with the average high moving from a moderately hot 73.4°F (23°C) in August to a comfortable 67.1°F (19.5°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Southwest Harbor, Maine, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 55.9°F (13.3°C). Southwest Harbor observes a minor decrease in the average high-temperature with the arrival of October, falling from September's comfortable 67.1°F (19.5°C) to a mild 55.9°F (13.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Southwest Harbor, Maine, with an average temperature ranging between min 34.7°F (1.5°C) and max 44.8°F (7.1°C). November's onset brings a slight change in high-temperatures, falling from a mild 55.9°F (13.3°C) in October to a chilly 44.8°F (7.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Southwest Harbor, Maine, with an average temperature varying between 25.7°F (-3.5°C) and 35.1°F (1.7°C). In Southwest Harbor, the average high-temperature in December drops from a chilly 44.8°F (7.1°C) in November to a cold 35.1°F (1.7°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Southwest Harbor?
With average temperatures fluctuating between a high of 29.7°F (-1.3°C) and a low of 18.5°F (-7.5°C), January stands out as the coldest month in Southwest Harbor, Maine.
How much does it rain in Southwest Harbor?
In Southwest Harbor, Maine, during the entire year, the rain falls for 142.1 days and collects up to 32.28" (820mm) of precipitation.
When does it snow in Southwest Harbor?
Months with snowfall are January through May, October through December.
How much does it snow in Southwest Harbor?
In Southwest Harbor, during the entire year, snow falls for 48.1 days and aggregates up to 23.82" (605mm) of snow.
When is the lowest UV index in Southwest Harbor?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Southwest Harbor.
What is the most humid month in Southwest Harbor?
The most humid month in Southwest Harbor is February, with an average relative humidity of 83%.
What is the snowiest month in Southwest Harbor?
The month with the most snowfall in Southwest Harbor, Maine, is February, when snow falls for 11.4 days and typically aggregates up to 5.75" (146mm) of snow.
What is the month with the least sunshine in Southwest Harbor?
February has the least sunshine of the year in Southwest Harbor, Maine, with an average of 4.1h of sunshine.
When is Daylight Saving Time (DST) in Southwest Harbor?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Southwest Harbor, Maine, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow in Southwest Harbor?
In Southwest Harbor, Maine, snow does not fall in June through September.
When are the longest days in Southwest Harbor?
June has the longest days of the year, with an average of 15h and 30min of daylight.
What is the month with the highest UV index in Southwest Harbor?
The months with the highest UV index are June through August, with an average maximum UV index of 5.
What is the driest month in Southwest Harbor?
July is the month with the least rainfall in Southwest Harbor, Maine. Rain falls for 13 days and accumulates 1.57" (40mm) of precipitation.
What is the hottest time of year in Southwest Harbor?
In Southwest Harbor, the average highest temperatures are observed in August, with a high of 73.4°F (23°C) and a low of 57.7°F (14.3°C).
What month has the most sunshine in Southwest Harbor?
With an average of 10.1h of sunshine, August has the most sunshine of the year.
What is the least humid month in Southwest Harbor?
November is the least humid month in Southwest Harbor, with an average relative humidity of 76%.
What is the rainiest month in Southwest Harbor?
The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.94" (100mm) of precipitation.
What is the month with the shortest days in Southwest Harbor?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Southwest Harbor, ME
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).
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
Southwest Harbor, ME
- Average pressure in January:
29.95"Hg - Average pressure in February:
29.94"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
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).
Average wind speed
Southwest Harbor, ME
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
9.2mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.5mph - Average wind speed in December:
10.1mph
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
Southwest Harbor, ME
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall
Southwest Harbor, ME
- Average rainfall in January:
3.19" - Average rainfall in February:
2.52" - Average rainfall in March:
2.44" - Average rainfall in April:
3.5" - Average rainfall in May:
2.28" - Average rainfall in June:
2.6"
- Average rainfall in July:
1.57" - Average rainfall in August:
1.73" - Average rainfall in September:
1.81" - Average rainfall in October:
3.35" - Average rainfall in November:
3.35" - Average rainfall in December:
3.94"
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
Southwest Harbor, ME
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
7.5 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
13 days - Average rainfall days in August:
10.4 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
14 days - Average rainfall days in November:
11.7 days - Average rainfall days in December:
11.5 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
Southwest Harbor, ME
- Average snowfall in January:
5.31" - Average snowfall in February:
5.75" - Average snowfall in March:
4.13" - Average snowfall in April:
2.44" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
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
Southwest Harbor, ME
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
11.4 days - Average snowfall days in March:
9.4 days - Average snowfall days in April:
3.1 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
4.1 days - Average snowfall days in December:
7.9 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 / Average sunshine
Southwest Harbor, ME
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
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 January:
4h and 3min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 1min - Average sunshine in April:
7h and 1min - Average sunshine in May:
7h and 5min - Average sunshine in June:
8h and 4min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
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
Southwest Harbor, ME
- Average sunshine days in January:
14.4 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
16.6 days - Average sunshine days in August:
18.7 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
15.7 days - Average sunshine days in December:
14.1 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
Southwest Harbor, ME
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
Southwest Harbor, ME
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
Southwest Harbor, ME
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).
Southwest Harbor, Maine, USA
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