Winthrop
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Winthrop, MA

April is a fresh spring month in Winthrop, Massachusetts, with average temperature ranging between min 40.5°F (4.7°C) and max 55.2°F (12.9°C).

Temperature

In Winthrop, Massachusetts, the average high-temperature increases, from a chilly 43.5°F (6.4°C) in March, to a fresh 55.2°F (12.9°C). The average low-temperature, is 40.5°F (4.7°C).

Humidity

April is the least humid month in Winthrop, with an average relative humidity of 69%.

Rainfall

Months with the most rainfall are March, April and December, with an average 2.91" (74mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Winthrop, Massachusetts, during 1 snowfall days, 0.79" (20mm) of snow is typically accumulated. Throughout the year, there are 29.8 snowfall days, and 15.75" (400mm) of snow is accumulated.

Ocean temperature

In Winthrop, in April, the average water temperature is 43.2°F (6.2°C).
Note: Swimming in 43.2°F (6.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In April, the average length of the day in Winthrop is 13.4h.

Sunshine

In Winthrop, the average sunshine is 8h.

UV index

The average daily maximum UV index in Winthrop is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 3 in April transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Winthrop?

In April, in Winthrop, the average high-temperature is 55.2°F (12.9°C), and the average low-temperature is 40.5°F (4.7°C).

What is the least humid month in Winthrop?

With an average relative humidity of 69%, April is the least humid month.

What is the average humidity in April in Winthrop?

The average relative humidity in April in Winthrop, Massachusetts, is 69%.

How many days does it rain in April in Winthrop?

In Winthrop, in April, during 14.8 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

What is the wettest month in Winthrop?

The wettest months in Winthrop, Massachusetts, are March, April and December, with an average 2.91" (74mm) of rainfall.

How much does it snow in Winthrop in April?

In Winthrop, during April, snow falls for 1 days and regularly aggregates up to 0.79" (20mm) of snow.

What is the water temperature in April in Winthrop?

In Winthrop, Massachusetts, the average seawater temperature in April is 43.2°F (6.2°C). Swimming in 43.2°F (6.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Winthrop have in April?

The average length of the day in April in Winthrop, Massachusetts, is 13.4h.

How long on average sun shines in April in Winthrop?

In April, the average sunshine is 8h.

What is the UV index reading in April in Winthrop?

In April, the average daily maximum UV index in Winthrop is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in April - Winthrop, 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 humidity in April - Winthrop, 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 - Winthrop, 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 - Winthrop, 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 - Winthrop, MA
  • Average snowfall in April: 0.79"

The month with the highest snowfall is February (4.72").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in April - Winthrop, MA
  • Average snowfall days in April: 1 days

Months with the highest number of snowfall days are January and February (7.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in April - Winthrop, MA
  • Average sea temperature in April: 43.2°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).

Average daylight in April / Average sunshine in April - Winthrop, MA
  • Average daylight in April: 13.4h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in April: 8h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average UV index in April - Winthrop, MA
  • Average UV index in April: 3

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).