Climate and Average Weather Year Round at Tumby Bay Airport Australia

At Tumby Bay Airport, the summers are warm and dry, the winters are cold, and it is windy and mostly clear year round. Over the course of the year, the temperature typically varies from 45°F to 78°F and is rarely below 40°F or above 90°F.

Based on the tourism score, the best time of year to visit Tumby Bay Airport for warm-weather activities is from late December to mid March.

The warm season lasts for 3.6 months, from November 30 to March 19, with an average daily high temperature above 74°F. The hottest month of the year at Tumby Bay Airport is February, with an average high of 77°F and low of 63°F.

The cool season lasts for 3.2 months, from May 31 to September 6, with an average daily high temperature below 62°F. The coldest month of the year at Tumby Bay Airport is July, with an average low of 46°F and high of 58°F.

At Tumby Bay Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Tumby Bay Airport begins around December 1 and lasts for 3.7 months, ending around March 25.

The clearest month of the year at Tumby Bay Airport is January, during which on average the sky is clear, mostly clear, or partly cloudy 75% of the time.

The cloudier part of the year begins around March 25 and lasts for 8.3 months, ending around December 1.

The cloudiest month of the year at Tumby Bay Airport is May, during which on average the sky is overcast or mostly cloudy 41% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Tumby Bay Airport varies throughout the year.

The wetter season lasts 4.2 months, from May 12 to September 18, with a greater than 16% chance of a given day being a wet day. The month with the most wet days at Tumby Bay Airport is July, with an average of 8.3 days with at least 0.04 inches of precipitation.

The drier season lasts 7.8 months, from September 18 to May 12. The month with the fewest wet days at Tumby Bay Airport is January, with an average of 1.6 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Tumby Bay Airport is July, with an average of 8.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 28% on June 27.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Tumby Bay Airport experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from February 15 to December 22, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain at Tumby Bay Airport is June, with an average rainfall of 1.8 inches.

The rainless period of the year lasts for 1.8 months, from December 22 to February 15. The month with the least rain at Tumby Bay Airport is January, with an average rainfall of 0.4 inches.

The length of the day at Tumby Bay Airport varies significantly over the course of the year. In 2024, the shortest day is June 21, with 9 hours, 51 minutes of daylight; the longest day is December 21, with 14 hours, 27 minutes of daylight.

The earliest sunrise is at 5:56 AM on October 5, and the latest sunrise is 1 hour, 45 minutes later at 7:41 AM on April 6. The earliest sunset is at 5:22 PM on June 10, and the latest sunset is 3 hours, 20 minutes later at 8:41 PM on January 7.

Daylight saving time (DST) is observed at Tumby Bay Airport during 2024, starting in the spring on October 6 and ending in the fall on April 7.

The figure below presents a compact representation of key lunar data for 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.

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 perceived humidity level at Tumby Bay Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 1% 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 Tumby Bay Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 9.3 months, from June 4 to March 14, with average wind speeds of more than 13.2 miles per hour. The windiest month of the year at Tumby Bay Airport is July, with an average hourly wind speed of 14.2 miles per hour.

The calmer time of year lasts for 2.7 months, from March 14 to June 4. The calmest month of the year at Tumby Bay Airport is April, with an average hourly wind speed of 12.1 miles per hour.

The predominant average hourly wind direction at Tumby Bay Airport varies throughout the year.

The wind is most often from the west for 2.0 weeks, from May 1 to May 15 and for 3.9 months, from June 14 to October 11, with a peak percentage of 43% on August 9. The wind is most often from the north for 4.3 weeks, from May 15 to June 14, with a peak percentage of 33% on June 13. The wind is most often from the south for 6.7 months, from October 11 to May 1, with a peak percentage of 51% on January 1.

Tumby Bay Airport 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 water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.2 months, from December 31 to April 4, with an average temperature above 67°F. The month of the year at Tumby Bay Airport with the warmest water is February, with an average temperature of 69°F.

The time of year with cooler water lasts for 3.6 months, from June 20 to October 7, with an average temperature below 59°F. The month of the year at Tumby Bay Airport with the coolest water is August, with an average temperature of 57°F.

To characterize how pleasant the weather is at Tumby Bay Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Tumby Bay Airport for general outdoor tourist activities is from late December to mid March, with a peak score in the second week of February.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Tumby Bay Airport for hot-weather activities is from mid January to late February, with a peak score in the second week of February.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 at Tumby Bay Airport 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.

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 experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from November 5 to February 18, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest month of the year at Tumby Bay Airport is January, with an average of 8.1 kWh.

The darker period of the year lasts for 3.6 months, from April 28 to August 16, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year at Tumby Bay Airport is June, with an average of 2.4 kWh.

For the purposes of this report, the geographical coordinates of Tumby Bay Airport are -34.359 deg latitude, 136.095 deg longitude, and 30 ft elevation.

The topography within 2 miles of Tumby Bay Airport contains only modest variations in elevation, with a maximum elevation change of 148 feet and an average elevation above sea level of 40 feet. Within 10 miles contains only modest variations in elevation (1,089 feet). Within 50 miles also contains very significant variations in elevation (1,368 feet).

The area within 2 miles of Tumby Bay Airport is covered by cropland (58%) and water (19%), within 10 miles by cropland (58%) and water (30%), and within 50 miles by water (49%) and cropland (32%).