Climate and Average Weather Year Round in Tailem Bend South Australia, Australia

In Tailem Bend, the summers are dry and warm, the winters are cold, and it is mostly clear and windy year round. Over the course of the year, the temperature typically varies from 43°F to 87°F and is rarely below 35°F or above 103°F.

Based on the tourism score, the best time of year to visit Tailem Bend for warm-weather activities is from late December to early March.

The hot season lasts for 3.4 months, from December 1 to March 13, with an average daily high temperature above 81°F. The hottest month of the year in Tailem Bend is January, with an average high of 86°F and low of 62°F.

The cool season lasts for 3.5 months, from May 21 to September 5, with an average daily high temperature below 64°F. The coldest month of the year in Tailem Bend is July, with an average low of 43°F and high of 59°F.

In Tailem Bend, 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 in Tailem Bend begins around December 13 and lasts for 3.9 months, ending around April 8.

The clearest month of the year in Tailem Bend is February, 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 April 8 and lasts for 8.1 months, ending around December 13.

The cloudiest month of the year in Tailem Bend is May, during which on average the sky is overcast or mostly cloudy 39% of the time.

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

The wetter season lasts 5.1 months, from May 5 to October 9, with a greater than 16% chance of a given day being a wet day. The month with the most wet days in Tailem Bend is August, with an average of 7.6 days with at least 0.04 inches of precipitation.

The drier season lasts 6.9 months, from October 9 to May 5. The month with the fewest wet days in Tailem Bend is February, with an average of 1.7 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 in Tailem Bend is August, with an average of 7.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 26% on August 10.

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. Tailem Bend experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Tailem Bend. The month with the most rain in Tailem Bend is June, with an average rainfall of 1.5 inches.

The month with the least rain in Tailem Bend is January, with an average rainfall of 0.5 inches.

The length of the day in Tailem Bend varies significantly over the course of the year. In 2026, the shortest day is June 21, with 9 hours, 47 minutes of daylight; the longest day is December 22, with 14 hours, 32 minutes of daylight.

The earliest sunrise is at 5:46 AM on October 3, and the latest sunrise is 1 hour, 41 minutes later at 7:27 AM on April 4. The earliest sunset is at 5:06 PM on June 12, and the latest sunset is 3 hours, 24 minutes later at 8:30 PM on January 6.

Daylight saving time (DST) is observed in Tailem Bend during 2026, starting in the spring on October 4 and ending in the fall on April 5.

The figure below presents a compact representation of key lunar data for 2026. 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 in Tailem Bend, 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 in Tailem Bend experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from September 12 to March 15, with average wind speeds of more than 10.5 miles per hour. The windiest month of the year in Tailem Bend is January, with an average hourly wind speed of 11.9 miles per hour.

The calmer time of year lasts for 5.9 months, from March 15 to September 12. The calmest month of the year in Tailem Bend is May, with an average hourly wind speed of 9.2 miles per hour.

The predominant average hourly wind direction in Tailem Bend varies throughout the year.

The wind is most often from the west for 5.0 days, from May 7 to May 12 and for 3.8 months, from June 19 to October 12, with a peak percentage of 43% on August 10. The wind is most often from the north for 1.2 months, from May 12 to June 19, with a peak percentage of 34% on June 18. The wind is most often from the south for 6.8 months, from October 12 to May 7, with a peak percentage of 58% on January 1.

Tailem Bend 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 3.5 months, from December 16 to April 1, with an average temperature above 64°F. The month of the year in Tailem Bend with the warmest water is February, with an average temperature of 65°F.

The time of year with cooler water lasts for 3.3 months, from June 26 to October 3, with an average temperature below 58°F. The month of the year in Tailem Bend with the coolest water is August, with an average temperature of 56°F.

To characterize how pleasant the weather is in Tailem Bend 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 Tailem Bend for general outdoor tourist activities is from late December to early March, with a peak score in the third week of January.

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 Tailem Bend for hot-weather activities is from early January to late February, with a peak score in the last week of January.

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).

While it does not do so every year, freezing temperatures are seen in Tailem Bend over some winters. The day least likely to be in the growing season is July 10, with a 51% chance.

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.

Based on growing degree days alone, the first spring blooms in Tailem Bend should appear around August 4, only rarely appearing before July 27 or after August 15.

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 19, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in Tailem Bend is January, with an average of 8.2 kWh.

The darker period of the year lasts for 3.6 months, from April 30 to August 17, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year in Tailem Bend is June, with an average of 2.3 kWh.

For the purposes of this report, the geographical coordinates of Tailem Bend are -35.252 deg latitude, 139.455 deg longitude, and 72 ft elevation.

The topography within 2 miles of Tailem Bend contains only modest variations in elevation, with a maximum elevation change of 164 feet and an average elevation above sea level of 64 feet. Within 10 miles also contains only modest variations in elevation (394 feet). Within 50 miles contains only modest variations in elevation (2,382 feet).

The area within 2 miles of Tailem Bend is covered by cropland (47%) and sparse vegetation (34%), within 10 miles by cropland (61%) and sparse vegetation (29%), and within 50 miles by cropland (48%) and sparse vegetation (26%).