March weather forecastSouthport, CT
March
Weather in March
In March, the coastal city of Southport experiences a transition in its weather essence. While the slight increase in temperature compared to February indicates a slow march towards warmer months, it remains at a chill reminiscent of winter. Notably, this month experiences the highest rainfall for the first quarter of the year. The extended daylight hours may offer more opportunities for sightseeing, before water-based adventures become practical. Just like most places in Connecticut, the winter feel in Southport in March starts giving way to a more spring-like atmosphere.Temperature
As February gives way to March, the average high-temperature displays a slight ascent, adjusting from a cold 38.3°F (3.5°C) to a chilly 44.2°F (6.8°C). An average low-temperature of 34°F (1.1°C) is noted during the month of March.Humidity
In Southport, the average relative humidity in March is 73%.Rainfall
In March, the rain falls for 13.2 days. Throughout March, 2.91" (74mm) of precipitation is accumulated. In Southport, during the entire year, the rain falls for 170.1 days and collects up to 37.76" (959mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. The month with the most snowfall in Southport is March, when snow falls for 5.3 days and typically aggregates up to 2.8" (71mm) of snow.Ocean temperature
In Southport, Connecticut, the average seawater temperature in March is 39.7°F (4.3°C).Note: Within the context of swimming, this scenario is life-threatening. Instant loss of control over breathing impairs cognitive functions. It is essential to use a specialized swimsuit to mitigate thermal loss.
Daylight
In Southport, the average length of the day in March is 11h and 58min.On the first day of the month, sunrise is at 6:26 am and sunset at 5:44 pm EST. On the last day of March, in Southport, sunrise is at 6:36 am and sunset at 7:17 pm EDT.
Note: 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 lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.
Sunshine
In March, the average sunshine is 6.3h.UV index
The months with the lowest UV index in Southport are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in March interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. 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. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Southport, CT
- Average high temperature in March: 44.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in March: 34°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in March
Southport, CT
- Average pressure in March: 30.05"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in March
Southport, CT
- Average wind speed in March: 10.2mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in March
Southport, CT
- Average humidity in March: 73%
The months with the highest relative humidity are May and June (76%).
The months with the lowest relative humidity are April and November (72%).
Average rainfall in March
Southport, CT
- Average rainfall in March: 2.91"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is January (2.48").
Average rainfall days in March
Southport, CT
- Average rainfall days in March: 13.2 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in March
Southport, CT
- Average snowfall in March: 2.8"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in March
Southport, CT
- Average snowfall days in March: 5.3 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in March
Southport, CT
- Average sea temperature in March: 39.7°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (39°F).
Average daylight in March /
Average sunshine in March
Southport, CT
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in March: 6h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in March
Southport, CT
- Average sunshine days in March: 13.3 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in March
Southport, CT
- Average UV index in March: 2
The months with the highest UV index are June, 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 March
Southport, CT
- Average cloud cover in March: 47
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in March
Southport, CT
- Average visibility in March: 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).





