Winter Weather in Estero Florida, United States

Daily high temperatures are around 76°F, rarely falling below 64°F or exceeding 84°F. The lowest daily average high temperature is 74°F on January 16.

Daily low temperatures are around 58°F, rarely falling below 42°F or exceeding 70°F. The lowest daily average low temperature is 55°F on January 19.

For reference, on August 8, the hottest day of the year, temperatures in Estero typically range from 76°F to 90°F, while on January 18, the coldest day of the year, they range from 55°F to 74°F.

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

Asunción, Paraguay (3,925 miles away) and Taichung, Taiwan (8,642 miles) are the far-away foreign places with temperatures most similar to Estero (view comparison).

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The winter in Estero experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 35% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 32% on February 22.

The clearest day of the winter is February 22, with clear, mostly clear, or partly cloudy conditions 68% of the time.

For reference, on August 28, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on February 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Estero, the chance of a wet day over the course of the winter is gradually increasing, starting the season at 15% and ending it at 18%.

For reference, the year's highest daily chance of a wet day is 74% on August 13, and its lowest chance is 13% on December 17.

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 winter in Estero is increasing, starting the season at 1.3 inches, when it rarely exceeds 3.5 inches or falls below 0.1 inches, and ending the season at 1.9 inches, when it rarely exceeds 4.0 inches or falls below 0.3 inches.

The lowest average 31-day accumulation is 1.3 inches on December 17.

Over the course of the winter in Estero, the length of the day is rapidly increasing. From the start to the end of the season, the length of the day increases by 1 hour, 1 minute, implying an average daily increase of 40 seconds, and weekly increase of 4 minutes, 43 seconds.

The shortest day of the winter is December 22, with 10 hours, 29 minutes of daylight and the longest day is February 29, with 11 hours, 37 minutes of daylight.

The latest sunrise of the winter in Estero is 7:16 AM on January 12 and the earliest sunrise is 26 minutes earlier at 6:51 AM on February 29.

The earliest sunset is 5:34 PM on December 1 and the latest sunset is 54 minutes later at 6:28 PM on February 29.

Daylight saving time is observed in Estero during 2023, but it neither starts nor ends during the winter, so the entire season is in standard time.

For reference, on June 21, the longest day of the year, the Sun rises at 6:35 AM and sets 13 hours, 48 minutes later, at 8:23 PM, while on December 22, the shortest day of the year, it rises at 7:11 AM and sets 10 hours, 29 minutes later, at 5:40 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 winter of 2023. 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 Estero is rapidly decreasing during the winter, falling from 33% to 21% over the course of the season.

The lowest chance of a muggy day during the winter is 16% on January 31.

For reference, on August 12, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 30, the least muggy day of the year, there are muggy conditions 16% 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 Estero is essentially constant during the winter, remaining within 0.2 miles per hour of 9.5 miles per hour throughout.

For reference, on March 14, the windiest day of the year, the daily average wind speed is 9.8 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.

The lowest daily average wind speed during the winter is 9.3 miles per hour on December 21.

The wind direction in Estero during the winter is predominantly out of the east from December 1 to December 27 and from February 27 to February 29 and the north from December 27 to February 27.

Estero 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 Estero is decreasing during the winter, falling by 5°F, from 73°F to 69°F, over the course of the season.

The lowest average surface water temperature during the winter is 68°F on February 4.

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 Estero 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 Estero are very rapidly decreasing during the winter, decreasing by 7,248°F, from 8,122°F to 873°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 Estero is increasing during the winter, rising by 1.5 kWh, from 3.9 kWh to 5.4 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 3.7 kWh on December 22.

For the purposes of this report, the geographical coordinates of Estero are 26.438 deg latitude, -81.807 deg longitude, and 13 ft elevation.

The topography within 2 miles of Estero is essentially flat, with a maximum elevation change of 10 feet and an average elevation above sea level of 11 feet. Within 10 miles is also essentially flat (26 feet). Within 50 miles is essentially flat (98 feet).

The area within 2 miles of Estero is covered by artificial surfaces (96%), within 10 miles by artificial surfaces (48%) and herbaceous vegetation (25%), and within 50 miles by water (40%) and herbaceous vegetation (25%).