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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 sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Castine, Maine, is a freezing cold winter month, with an average temperature ranging between max 28.4°F (-2°C) and min 16.2°F (-8.8°C). Castine witnesses the coldest weather in January, with temperatures averaging a high of 28.4°F (-2°C) and a low of 16.2°F (-8.8°C). Weather in January »
Weather in February
February, the last month of the winter in Castine, is another freezing cold month, with temperature in the range of an average low of 17.4°F (-8.1°C) and an average high of 29.8°F (-1.2°C). February notes an average high-temperature of a still subzero cold 29.8°F (-1.2°C), subtly differing from January's 28.4°F (-2°C). Weather in February »
Weather in March
March, the first month of the spring in Castine, is an icy month, with an average temperature varying between 24.3°F (-4.3°C) and 37°F (2.8°C). As March arrives, a slight rise in the average high-temperature is observed, moving from a subzero cold 29.8°F (-1.2°C) in February to an icy 37°F (2.8°C). Weather in March »
Weather in April
April is a chilly spring month in Castine, Maine, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 34.5°F (1.4°C). An increase in the average high-temperature marks April, moving from March's cold 37°F (2.8°C) to a frosty 48.9°F (9.4°C). Weather in April »
Weather in May
May, the last month of the spring in Castine, is a moderate month, with an average temperature varying between 59.7°F (15.4°C) and 43.9°F (6.6°C). The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a frosty 48.9°F (9.4°C) in April to a refreshing 59.7°F (15.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a comfortable month in Castine, Maine, with an average temperature ranging between max 66.7°F (19.3°C) and min 50.7°F (10.4°C). As Castine transitions into June, a marginal rise in the average high-temperature is observed, moving from 59.7°F (15.4°C) in May to a still refreshing 66.7°F (19.3°C). Weather in June »
Weather in July
July in Castine, Maine, is a moderately hot summer month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 73.9°F (23.3°C). Castine witnesses its peak temperatures during July and August, when the average high-temperature reaches 73.9°F (23.3°C). Weather in July »
Weather in August
August, the last month of the summer in Castine, is another warm month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.9°F (23.3°C). July and August mark Castine's peak of temperatures, averaging a high-temperature of 73.9°F (23.3°C). Weather in August »
Weather in September
September, the first month of the autumn in Castine, is still a refreshing month, with an average temperature varying between 51.1°F (10.6°C) and 67.1°F (19.5°C). September is characterized by a mild reduction in the average high-temperature, from a warm 73.9°F (23.3°C) in August to an enjoyable 67.1°F (19.5°C). Weather in September »
Weather in October
October, the same as September, in Castine, Maine, is another refreshing autumn month, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 55.8°F (13.2°C). October's arrival comes with a decrease in the average high-temperature, moving from an enjoyable 67.1°F (19.5°C) in September to a mild 55.8°F (13.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Castine, is another chilly month, with an average temperature fluctuating between 44.1°F (6.7°C) and 32.7°F (0.4°C). Start of November brings a shift in the average high-temperature, falling from October's moderate 55.8°F (13.2°C) to a chilly 44.1°F (6.7°C). Weather in November »
Weather in December
December, the first month of the winter in Castine, is also an icy month, with an average temperature fluctuating between 34.2°F (1.2°C) and 24.1°F (-4.4°C). Castine in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 44.1°F (6.7°C) in November to a wintry 34.2°F (1.2°C). Weather in December »
Updated: Jul 2, 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 time of the year is the coldest?
January is Castine's coldest month, registering average high temperatures of 28.4°F (-2°C) and lows of 16.2°F (-8.8°C).
How much does it rain?
In Castine, during the entire year, the rain falls for 141.1 days and collects up to 24.29" (617mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
January is the month with the most snowfall in Castine. Snow falls for 10.1 days and accumulates 4.57" (116mm) of snow.
How much does it snow?
In Castine, during the entire year, snow falls for 44.3 days and aggregates up to 16.81" (427mm) of snow.
What is the month with the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What are the most humid months?
February and July, with an average relative humidity of 83%, are most humid months in Castine.
What is the month with the least sunshine?
With an average of 4.3h of sunshine, February has the least sunshine of the year.
What month is the ocean coldest?
With an average ocean temperature of 38.3°F (3.5°C), March is the month with the coldest seawater.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 Castine, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 30min of daylight, June has the longest days of the year in Castine.
What is the month with the highest UV index?
June through August, with an average maximum UV index of 5, are months with the highest UV index.
What is the hottest time of year?
Castine's warmest months, July and August, record an average high-temperature of 73.9°F (23.3°C).
What is the driest month?
The months with the least rainfall are July and September Rain falls for 14.5 days and accumulates 1.46" (37mm) of rain.
What month is the ocean warmest?
August is the month with the warmest seawater in Castine, with an average ocean temperature of 58.6°F (14.8°C).
What month has the most sunshine?
August has the most sunshine of the year, with an average of 9.9h of sunshine.
What is the least humid month?
With an average relative humidity of 77%, November is the least humid month.
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 10.1 days and typically aggregates up to 2.72" (69mm) of precipitation.
What is the month with the shortest days?
With an average of 8h and 54min of daylight, December has the shortest days of the year in Castine.
Average temperature
Castine, ME
The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Castine, ME
- Average pressure in January:
29.96"Hg - Average pressure in February:
29.95"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:
30.03"Hg - Average pressure in December:
30"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
Castine, ME
- Average wind speed in January:
9.9mph - Average wind speed in February:
10mph - Average wind speed in March:
10.1mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Castine, ME
The months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall
Castine, ME
- Average rainfall in January:
1.93" - Average rainfall in February:
1.65" - Average rainfall in March:
1.57" - Average rainfall in April:
2.64" - Average rainfall in May:
2.05" - Average rainfall in June:
2.09"
- Average rainfall in July:
1.46" - Average rainfall in August:
1.85" - Average rainfall in September:
1.46" - Average rainfall in October:
2.56" - Average rainfall in November:
2.32" - Average rainfall in December:
2.72"
The wettest month (with the highest rainfall) is December (2.72").
The driest months (with the least rainfall) are July and September (1.46").
Average rainfall days
Castine, ME
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
15 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.5 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.2 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall
Castine, ME
- Average snowfall in January:
4.57" - Average snowfall in February:
3.58" - Average snowfall in March:
2.76" - Average snowfall in April:
2.17" - Average snowfall in May:
0.35" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Castine, ME
- Average snowfall days in January:
10.1 days - Average snowfall days in February:
10 days - Average snowfall days in March:
9 days - Average snowfall days in April:
2.9 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:
0.1 days - Average snowfall days in November:
3.2 days - Average snowfall days in December:
8.9 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature
Castine, ME
The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).
Average daylight / Average sunshine
Castine, 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 4min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 1min - Average sunshine in April:
7h and 1min - Average sunshine in May:
7h and 4min - Average sunshine in June:
8h and 2min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 1min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days
Castine, ME
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
14.7 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.7 days).
Average UV index
Castine, 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
Castine, ME
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility
Castine, ME
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Castine, Maine, USA
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