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Summer Weather in Merimbula New South Wales, Australia

Daily high temperatures are around 74°F, rarely falling below 64°F or exceeding 85°F. The highest daily average high temperature is 76°F on January 26.

Daily low temperatures increase by 4°F, from 59°F to 63°F, rarely falling below 54°F or exceeding 69°F. The highest daily average low temperature is 64°F on February 11.

For reference, on January 25, the hottest day of the year, temperatures in Merimbula typically range from 64°F to 76°F, while on July 19, the coldest day of the year, they range from 48°F to 59°F.

Average High and Low Temperature in the Summer in Merimbula

Average High and Low Temperature in the Summer in MerimbulaDecJanFeb50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FSpringFallJan 2576°FJan 2576°F64°F64°FDec 172°FDec 172°F59°F59°FFeb 2875°FFeb 2875°F63°F63°FJan 175°FJan 175°F62°F62°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in the Summer in Merimbula

Average Hourly Temperature in the Summer in MerimbulaDecJanFeb12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSpringFallcoolcoolcoolcomfortablecool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Cape Town, Western Cape, South Africa (6,641 miles away) is the far-away foreign place with temperatures most similar to Merimbula (view comparison).

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The summer in Merimbula experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 41% to 29%.

The clearest day of the summer is February 28, with clear, mostly clear, or partly cloudy conditions 71% of the time.

For reference, on November 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 42%, while on August 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.

Cloud Cover Categories in the Summer in Merimbula

Cloud Cover Categories in the Summer in MerimbulaDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFallDec 159%Dec 159%Feb 2871%Feb 2871%Jan 166%Jan 166%Feb 169%Feb 169%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Merimbula, the chance of a wet day over the course of the summer is rapidly decreasing, starting the season at 26% and ending it at 19%.

For reference, the year's highest daily chance of a wet day is 29% on November 20, and its lowest chance is 14% on July 28.

Probability of Precipitation in the Summer in Merimbula

Probability of Precipitation in the Summer in MerimbulaDecJanFeb0%0%5%5%10%10%15%15%20%20%25%25%30%30%SpringFallDec 126%Dec 126%Feb 2819%Feb 2819%Jan 120%Jan 120%Feb 123%Feb 123%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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 summer in Merimbula is essentially constant, remaining about 2.5 inches throughout, and rarely exceeding 6.5 inches or falling below 0.3 inches.

The highest average 31-day accumulation is 2.9 inches on February 10. The lowest average 31-day accumulation is 2.1 inches on January 5.

Average Monthly Rainfall in the Summer in Merimbula

Average Monthly Rainfall in the Summer in MerimbulaDecJanFeb0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inSpringFallFeb 102.9 inFeb 102.9 inJan 42.1 inJan 42.1 inDec 12.8 inDec 12.8 inFeb 282.6 inFeb 282.6 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of the summer in Merimbula, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 34 minutes, implying an average daily decrease of 1 minute, 3 seconds, and weekly decrease of 7 minutes, 21 seconds.

The shortest day of the summer is February 28, with 12 hours, 56 minutes of daylight and the longest day is December 21, with 14 hours, 42 minutes of daylight.

Hours of Daylight and Twilight in the Summer in Merimbula

Hours of Daylight and Twilight in the Summer in MerimbulaDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallDec 2114 hr, 42 minDec 2114 hr, 42 mindaydaydaydaynightFeb 2812 hr, 56 minFeb 2812 hr, 56 minFeb 113 hr, 56 minFeb 113 hr, 56 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the summer in Merimbula is 5:34 AM on December 7 and the latest sunrise is 1 hour, 10 minutes later at 6:44 AM on February 28.

The latest sunset is 8:23 PM on January 5 and the earliest sunset is 43 minutes earlier at 7:40 PM on February 28.

Daylight saving time is observed in Merimbula during 2024, but it neither starts nor ends during the summer, so the entire season is in daylight saving time.

For reference, on December 21, the longest day of the year, the Sun rises at 5:37 AM and sets 14 hours, 42 minutes later, at 8:19 PM, while on June 20, the shortest day of the year, it rises at 7:13 AM and sets 9 hours, 38 minutes later, at 4:50 PM.

Sunrise & Sunset with Twilight in the Summer in Merimbula

Sunrise & Sunset with Twilight in the Summer in MerimbulaDecJanFeb2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSpringFall5:34 AM5:34 AMDec 78:09 PMDec 78:09 PM5:47 AM5:47 AMJan 58:23 PMJan 58:23 PM6:44 AM6:44 AMFeb 287:40 PMFeb 287:40 PM6:15 AM6:15 AMFeb 18:11 PMFeb 18:11 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the summer. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

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.

Solar Elevation and Azimuth in the Summer in Merimbula

Solar Elevation and Azimuth in the Summer in MerimbulaDecJanFeb12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSpringFall0010202030304050506060700010102030304040506070
northeastsouthwest
Solar elevation and azimuth in the the summer of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

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

Moon Rise, Set & Phases in the Summer in Merimbula

Moon Rise, Set & Phases in the Summer in MerimbulaDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallNov 111:48 PMNov 111:48 PMNov 168:29 AMNov 168:29 AMDec 15:22 PMDec 15:22 PMDec 158:02 PMDec 158:02 PMDec 319:28 AMDec 319:28 AMJan 149:28 AMJan 149:28 AMJan 2911:37 PMJan 2911:37 PMFeb 1312:54 AMFeb 1312:54 AMFeb 2811:45 AMFeb 2811:45 AMMar 145:55 PMMar 145:55 PMMar 299:58 PMMar 299:58 PM7:23 PM7:23 PM7:12 PM7:12 PM5:23 AM5:23 AM4:58 AM4:58 AM8:21 PM8:21 PM8:30 PM8:30 PM5:43 AM5:43 AM9:02 PM9:02 PM8:13 PM8:13 PM5:37 AM5:37 AM8:21 PM8:21 PM8:03 PM8:03 PM6:42 AM6:42 AM6:31 AM6:31 AM7:53 PM7:53 PM7:19 PM7:19 PM7:33 AM7:33 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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 Merimbula is rapidly increasing during the summer, rising from 2% to 13% over the course of the season.

The highest chance of a muggy day during the summer is 17% on February 7.

For reference, on February 7, the muggiest day of the year, there are muggy conditions 17% of the time, while on May 25, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Summer in Merimbula

Humidity Comfort Levels in the Summer in MerimbulaDecJanFeb0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SpringFallFeb 717%Feb 717%Dec 12%Dec 12%Feb 2813%Feb 2813%Jan 18%Jan 18%muggymuggyhumidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Merimbula is essentially constant during the summer, remaining within 0.1 miles per hour of 7.5 miles per hour throughout.

For reference, on June 24, the windiest day of the year, the daily average wind speed is 7.8 miles per hour, while on April 30, the calmest day of the year, the daily average wind speed is 7.0 miles per hour.

The highest daily average wind speed during the summer is 7.6 miles per hour on January 28.

Average Wind Speed in the Summer in Merimbula

Average Wind Speed in the Summer in MerimbulaDecJanFeb0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mphSpringFallJan 287.6 mphJan 287.6 mphDec 17.3 mphDec 17.3 mphFeb 287.5 mphFeb 287.5 mphJan 17.6 mphJan 17.6 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Merimbula throughout the summer is predominantly from the north, with a peak proportion of 34% on January 14.

Wind Direction in the Summer in Merimbula

Wind Direction in the Summer in MerimbulaDecJanFeb0%100%20%80%40%60%60%40%80%20%100%0%SpringFallsoutheastnorthwest
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Merimbula 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 Merimbula is increasing during the summer, rising by 5°F, from 65°F to 71°F, over the course of the season.

The highest average surface water temperature during the summer is 71°F on February 21.

Average Water Temperature in the Summer in Merimbula

Average Water Temperature in the Summer in MerimbulaDecJanFeb60°F60°F62°F62°F64°F64°F66°F66°F68°F68°F70°F70°F72°F72°F74°F74°FSpringFallFeb 2171°FFeb 2171°FDec 165°FDec 165°FJan 168°FJan 168°FFeb 170°FFeb 170°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Merimbula 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.

Time Spent in Various Temperature Bands and the Growing Season in the Summer in Merimbula

Time Spent in Various Temperature Bands and the Growing Season in the Summer in MerimbulaDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFall100%Jan 15100%Jan 15coolcomfortablewarmcold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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 Merimbula are very rapidly increasing during the summer, increasing by 1,622°F, from 1,271°F to 2,893°F, over the course of the season.

Growing Degree Days in the Summer in Merimbula

Growing Degree Days in the Summer in MerimbulaDecJanFeb1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FSpringFallDec 11,271°FDec 11,271°FFeb 282,893°FFeb 282,893°FJan 11,789°FJan 11,789°FFeb 12,381°FFeb 12,381°F
The average growing degree days accumulated over the course of the summer, with 25th to 75th and 10th to 90th percentile bands.

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 Merimbula is decreasing during the summer, falling by 1.1 kWh, from 7.3 kWh to 6.2 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 7.8 kWh on December 30.

Average Daily Incident Shortwave Solar Energy in the Summer in Merimbula

Average Daily Incident Shortwave Solar Energy in the Summer in MerimbulaDecJanFeb0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhSpringFallDec 307.8 kWhDec 307.8 kWhDec 17.3 kWhDec 17.3 kWhFeb 286.2 kWhFeb 286.2 kWhFeb 17.1 kWhFeb 17.1 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Merimbula are -36.889 deg latitude, 149.910 deg longitude, and 13 ft elevation.

The topography within 2 miles of Merimbula contains significant variations in elevation, with a maximum elevation change of 686 feet and an average elevation above sea level of 112 feet. Within 10 miles contains significant variations in elevation (2,201 feet). Within 50 miles contains large variations in elevation (4,409 feet).

The area within 2 miles of Merimbula is covered by trees (45%) and water (36%), within 10 miles by trees (49%) and water (42%), and within 50 miles by water (45%) and trees (42%).

This report illustrates the typical weather in Merimbula, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There is only a single weather station, Canberra International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Merimbula.

At a distance of 187 kilometers from Merimbula, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .

The weight assigned to the MERRA-2 value depends on the distance from Merimbula to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 43%, making the weight assigned to the weather station 57%.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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