April Weather at Sable Island, N. S. Canada

Daily high temperatures increase by 5°F, from 40°F to 46°F, rarely falling below 34°F or exceeding 51°F.

Daily low temperatures increase by 6°F, from 33°F to 39°F, rarely falling below 27°F or exceeding 43°F.

For reference, on August 15, the hottest day of the year, temperatures at Sable Island, N. S. typically range from 61°F to 68°F, while on February 3, the coldest day of the year, they range from 26°F to 35°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Åkirkeby, Denmark (3,283 miles away) is the far-away foreign place with temperatures most similar to Sable Island, N. S. (view comparison).

© OpenStreetMap contributors

Compare Sable Island, N. S. to another city:

CompareMap

The month of April at Sable Island, N. S. experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 63% to 69%.

The clearest day of the month is April 1, with clear, mostly clear, or partly cloudy conditions 37% of the time.

For reference, on January 28, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 71%, while on September 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 53%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Sable Island, N. S., the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 43% and ending it at 34%.

For reference, the year's highest daily chance of a wet day is 47% on November 30, and its lowest chance is 32% on May 5.

Over the course of April at Sable Island, N. S., the chance of a day with only rain remains an essentially constant 36% throughout, the chance of a day with mixed snow and rain decreases from 6% to 0%, and the chance of a day with only snow decreases from 3% to 0%.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during April at Sable Island, N. S. is decreasing, starting the month at 4.1 inches, when it rarely exceeds 5.8 inches or falls below 2.4 inches, and ending the month at 3.4 inches, when it rarely exceeds 4.9 inches or falls below 1.8 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during April at Sable Island, N. S. is rapidly decreasing, starting the month at 4.7 inches, when it rarely exceeds 11.0 inches or falls below 0.5 inches, and ending the month at 0.3 inches, when it rarely exceeds 1.3 inches.

Over the course of April at Sable Island, N. S., the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 23 minutes, implying an average daily increase of 2 minutes, 52 seconds, and weekly increase of 20 minutes, 1 second.

The shortest day of the month is April 1, with 12 hours, 47 minutes of daylight and the longest day is April 30, with 14 hours, 10 minutes of daylight.

The latest sunrise of the month at Sable Island, N. S. is 6:40 AM on April 1 and the earliest sunrise is 48 minutes earlier at 5:52 AM on April 30.

The earliest sunset is 7:27 PM on April 1 and the latest sunset is 35 minutes later at 8:02 PM on April 30.

Daylight saving time is observed at Sable Island, N. S. during 2024, but it neither starts nor ends during April, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:17 AM and sets 15 hours, 29 minutes later, at 8:46 PM, while on December 21, the shortest day of the year, it rises at 7:31 AM and sets 8 hours, 54 minutes later, at 4:25 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for April 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy at Sable Island, N. S. is essentially constant during April, remaining around 0% throughout.

For reference, on August 18, the muggiest day of the year, there are muggy conditions 17% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Sable Island, N. S. is rapidly decreasing during April, decreasing from 18.5 miles per hour to 15.5 miles per hour over the course of the month.

For reference, on January 13, the windiest day of the year, the daily average wind speed is 22.0 miles per hour, while on July 27, the calmest day of the year, the daily average wind speed is 12.7 miles per hour.

The hourly average wind direction at Sable Island, N. S. throughout April is predominantly from the west, with a peak proportion of 35% on April 1.

Sable Island, N. S. is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature at Sable Island, N. S. is gradually increasing during April, rising by 3°F, from 36°F to 40°F, over the course of the month.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Sable Island, N. S. typically lasts for 7.3 months (223 days), from around April 17 to around November 26, rarely starting before March 28 or after May 9, and rarely ending before November 4 or after December 17.

During April at Sable Island, N. S., the chance that a given day is within the growing season is very rapidly increasing rising from 16% to 77% over the course of the month.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days at Sable Island, N. S. are essentially constant during April, remaining around 1°F throughout.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy at Sable Island, N. S. is gradually increasing during April, rising by 0.9 kWh, from 4.1 kWh to 5.0 kWh, over the course of the month.