August Weather at Ittoqqortoormiit Heliport Greenland

Daily high temperatures decrease by 5°F, from 47°F to 42°F, rarely falling below 37°F or exceeding 54°F.

Daily low temperatures decrease by 4°F, from 39°F to 35°F, rarely falling below 31°F or exceeding 43°F.

For reference, on July 27, the hottest day of the year, temperatures at Ittoqqortoormiit Heliport typically range from 39°F to 48°F, while on February 21, the coldest day of the year, they range from 2°F to 13°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. 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.

Hooper Bay, Alaska, United States (3,155 miles away) and Magadan, Russia (3,448 miles) are the far-away foreign places with temperatures most similar to Ittoqqortoormiit Heliport (view comparison).

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The month of August at Ittoqqortoormiit Heliport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 63% throughout the month.

The clearest day of the month is August 12, with clear, mostly clear, or partly cloudy conditions 37% of the time.

For reference, on January 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 77%, while on June 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 46%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Ittoqqortoormiit Heliport, the chance of a wet day over the course of August is gradually increasing, starting the month at 20% and ending it at 24%.

For reference, the year's highest daily chance of a wet day is 36% on February 1, and its lowest chance is 11% on June 14.

Over the course of August at Ittoqqortoormiit Heliport, the chance of a day with only rain remains an essentially constant 22% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.

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 August at Ittoqqortoormiit Heliport is increasing, starting the month at 2.0 inches, when it rarely exceeds 4.0 inches or falls below 0.1 inches, and ending the month at 2.6 inches, when it rarely exceeds 4.8 inches or falls below 0.4 inches.

The highest average 31-day accumulation is 2.6 inches on August 30.

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 August at Ittoqqortoormiit Heliport is increasing, starting the month at 0.0 inches, when it rarely exceeds 0.0 inches, and ending the month at 1.9 inches, when it rarely exceeds 5.6 inches.

Due to its extreme latitude, Ittoqqortoormiit Heliport experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

Neither polar day nor polar night occur during the month of August.

Over the course of August at Ittoqqortoormiit Heliport, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 5 hours, 59 minutes, implying an average daily decrease of 11 minutes, 59 seconds, and weekly decrease of 1 hour, 23 minutes, 50 seconds.

The shortest day of the month is August 31, with 15 hours, 37 minutes of daylight and the longest day is August 1, with 21 hours, 37 minutes of daylight.

The earliest sunrise of the month at Ittoqqortoormiit Heliport is 1:41 AM on August 1 and the latest sunrise is 2 hours, 57 minutes later at 4:37 AM on August 31.

The latest sunset is 11:17 PM on August 1 and the earliest sunset is 3 hours, 3 minutes earlier at 8:15 PM on August 31.

Daylight saving time is observed at Ittoqqortoormiit Heliport during 2024, but it neither starts nor ends during August, so the entire month is in standard time.

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 August 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 Ittoqqortoormiit Heliport is essentially constant during August, remaining around 0% throughout.

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 Ittoqqortoormiit Heliport is rapidly increasing during August, increasing from 8.8 miles per hour to 11.0 miles per hour over the course of the month.

For reference, on January 22, the windiest day of the year, the daily average wind speed is 18.1 miles per hour, while on June 25, the calmest day of the year, the daily average wind speed is 8.1 miles per hour.

The hourly average wind direction at Ittoqqortoormiit Heliport throughout August is predominantly from the north, with a peak proportion of 61% on August 28.

Ittoqqortoormiit Heliport 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 Ittoqqortoormiit Heliport is essentially constant during August, remaining around 35°F throughout.

The highest average surface water temperature during August is 35°F on August 16.

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 Ittoqqortoormiit Heliport typically lasts for 2.0 months (62 days), from around June 29 to around August 30, rarely starting before June 10, or ending after September 20.

During August at Ittoqqortoormiit Heliport, the chance that a given day is within the growing season is rapidly decreasing falling from 81% to 48% 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 Ittoqqortoormiit Heliport are essentially constant during August, remaining within 2°F of 10°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 Ittoqqortoormiit Heliport is rapidly decreasing during August, falling by 1.7 kWh, from 4.5 kWh to 2.8 kWh, over the course of the month.