Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April's arrival signals a temperature shift, moving from a chilly 43.5°F (6.4°C) in March to a fresh 55.2°F (12.9°C). Chelsea records an average nighttime low of 40.5°F (4.7°C) in April.Humidity
April is the least humid month, with an average relative humidity of 69%.Rainfall
The wettest months in Chelsea are March, April and December, with an average 2.91" (74mm) of rainfall.Snowfall
Months with snowfall are January through May, October through December. In Chelsea, in April, during 1 snowfall days, 0.79" (20mm) of snow is typically accumulated. In Chelsea, during the entire year, snow falls for 29.8 days and aggregates up to 15.75" (400mm) of snow.Ocean temperature
In Chelsea, the average seawater temperature in April is 43.2°F (6.2°C).Note: Diving into 43.2°F (6.2°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
In April, the average length of the day in Chelsea is 13h and 24min.On the first day of April in Chelsea, sunrise is at 6:25 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 7:43 pm EDT.
Sunshine
In April, the average sunshine in Chelsea is 8h.UV index
The average daily maximum UV index in April in Chelsea is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 3 in April translates into these instructions:
Make use of precautions - It is urged to ward off sun damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What are the temperatures in Chelsea in April?
What is the least humid month in Chelsea?
What is the average humidity in April in Chelsea?
What is the rainiest month in Chelsea?
How many days does it rain in April in Chelsea?
How many days does it snow in April in Chelsea?
What is the water temperature in April in Chelsea?
How many hours of daylight does Chelsea have in April?
When is the sunrise / sunset in April in Chelsea?
How long on average sun shines in April in Chelsea?
What is the UV index reading in April in Chelsea?
Average temperature in April
Chelsea, MA
- Average high temperature in April: 55.2°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in April: 40.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in April
Chelsea, MA
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Chelsea, MA
- Average wind speed in April: 8.6mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in April
Chelsea, MA
- Average humidity in April: 69%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (69%).
Average rainfall in April
Chelsea, MA
- Average rainfall in April: 2.91"
The wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in April
Chelsea, MA
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in April
Chelsea, MA
- Average snowfall in April: 0.79"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Chelsea, MA
- Average snowfall days in April: 1 days
The months with the highest number of snowfall days are January and February (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Chelsea, MA
- Average sea temperature in April: 43.1°F
The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).
Average daylight in April /
Average sunshine in April
Chelsea, MA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in April
Chelsea, MA
- Average sunshine days in April: 13 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (13 days).
Average UV index in April
Chelsea, MA
- Average UV index in April: 3
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 April
Chelsea, MA
- Average cloud cover in April: 47
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Chelsea, MA
- Average visibility in April: 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).
Chelsea, Massachusetts, USA
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