Spring Weather in Thursday Island Australia

Daily high temperatures increase by 4°F, from 83°F to 88°F, rarely falling below 81°F or exceeding 90°F.

Daily low temperatures increase by 5°F, from 75°F to 80°F, rarely falling below 73°F or exceeding 82°F.

For reference, on December 2, the hottest day of the year, temperatures in Thursday Island typically range from 80°F to 88°F, while on August 3, the coldest day of the year, they range from 74°F to 82°F.

The figure below shows you a compact characterization of the hourly average spring temperatures. 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.

Gros Islet, St. Lucia (10,867 miles away) is the far-away foreign place with temperatures most similar to Thursday Island (view comparison).

© OpenStreetMap contributors

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The spring in Thursday Island experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 59% to 79%.

The clearest day of the spring is September 9, with clear, mostly clear, or partly cloudy conditions 41% of the time.

For reference, on January 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 90%, while on August 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 42%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Thursday Island, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 1% and ending it at 27%.

For reference, the year's highest daily chance of a wet day is 75% on February 11, and its lowest chance is 1% on September 21.

Rainfall

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

The average sliding 31-day rainfall during the spring in Thursday Island is very rapidly increasing, starting the season at 0.1 inches, when it rarely exceeds 0.1 inches, and ending the season at 4.1 inches, when it rarely exceeds 10.5 inches or falls below 0.4 inches.

The lowest average 31-day accumulation is 0.1 inches on September 6.

Over the course of the spring in Thursday Island, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 47 minutes, implying an average daily increase of 31 seconds, and weekly increase of 3 minutes, 40 seconds.

The shortest day of the spring is September 1, with 11 hours, 54 minutes of daylight and the longest day is November 30, with 12 hours, 42 minutes of daylight.

The latest sunrise of the spring in Thursday Island is 6:33 AM on September 1 and the earliest sunrise is 36 minutes earlier at 5:57 AM on November 18.

The earliest sunset is 6:26 PM on October 5 and the latest sunset is 14 minutes later at 6:40 PM on November 30.

Daylight saving time is not observed in Thursday Island during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 6:06 AM and sets 12 hours, 45 minutes later, at 6:51 PM, while on June 20, the shortest day of the year, it rises at 6:47 AM and sets 11 hours, 30 minutes later, at 6:17 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 the spring of 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 in Thursday Island is increasing during the spring, rising from 92% to 100% over the course of the season.

For reference, on January 1, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 12, the least muggy day of the year, there are muggy conditions 88% 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 in Thursday Island is very rapidly decreasing during the spring, decreasing from 18.2 miles per hour to 11.5 miles per hour over the course of the season.

For reference, on July 31, the windiest day of the year, the daily average wind speed is 18.6 miles per hour, while on December 13, the calmest day of the year, the daily average wind speed is 10.7 miles per hour.

The hourly average wind direction in Thursday Island throughout the spring is predominantly from the east, with a peak proportion of 98% on September 21.

Thursday Island 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 in Thursday Island is increasing during the spring, rising by 6°F, from 78°F to 84°F, over the course of the season.

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).

Temperatures in Thursday Island are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

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 in Thursday Island are very rapidly increasing during the spring, increasing by 2,773°F, from 1,720°F to 4,493°F, over the course of the season.

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 in Thursday Island is essentially constant during the spring, remaining within 0.5 kWh of 6.6 kWh throughout.

The highest average daily incident shortwave solar energy during the spring is 7.1 kWh on October 23.

For the purposes of this report, the geographical coordinates of Thursday Island are -10.583 deg latitude, 142.219 deg longitude, and 62 ft elevation.

The topography within 2 miles of Thursday Island contains only modest variations in elevation, with a maximum elevation change of 341 feet and an average elevation above sea level of 27 feet. Within 10 miles contains only modest variations in elevation (781 feet). Within 50 miles contains significant variations in elevation (1,184 feet).

The area within 2 miles of Thursday Island is covered by water (76%) and trees (15%), within 10 miles by water (72%) and trees (22%), and within 50 miles by water (84%) and trees (14%).