Fall Weather in Golfito Costa Rica

Daily high temperatures are around 84°F, rarely falling below 80°F or exceeding 88°F. The lowest daily average high temperature is 83°F on October 25.

Daily low temperatures are around 73°F, rarely falling below 71°F or exceeding 75°F.

For reference, on March 10, the hottest day of the year, temperatures in Golfito typically range from 75°F to 92°F, while on January 9, the coldest day of the year, they range from 73°F to 89°F.

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

Douala, Cameroon (6,376 miles away) is the far-away foreign place with temperatures most similar to Golfito (view comparison).

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The fall in Golfito experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 93% to 65%. The highest chance of overcast or mostly cloudy conditions is 95% on October 1.

The clearest day of the fall is November 30, with clear, mostly clear, or partly cloudy conditions 35% of the time.

For reference, on June 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 95%, while on January 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 59%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Golfito, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 50% and ending it at 35%.

For reference, the year's highest daily chance of a wet day is 52% on October 6, and its lowest chance is 9% on February 2.

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 fall in Golfito is very rapidly decreasing, starting the season at 8.5 inches, when it rarely exceeds 13.9 inches or falls below 3.9 inches, and ending the season at 5.2 inches, when it rarely exceeds 10.2 inches or falls below 1.6 inches.

The highest average 31-day accumulation is 8.6 inches on October 18.

Over the course of the fall in Golfito, the length of the day is decreasing. From the start to the end of the season, the length of the day decreases by 37 minutes, implying an average daily decrease of 24 seconds, and weekly decrease of 2 minutes, 51 seconds.

The shortest day of the fall is November 30, with 11 hours, 40 minutes of daylight and the longest day is September 1, with 12 hours, 16 minutes of daylight.

The earliest sunrise of the fall in Golfito is 5:20 AM on October 14 and the latest sunrise is 11 minutes later at 5:31 AM on November 30.

The latest sunset is 5:40 PM on September 1 and the earliest sunset is 31 minutes earlier at 5:08 PM on November 14.

Daylight saving time is not observed in Golfito during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:15 AM and sets 12 hours, 38 minutes later, at 5:53 PM, while on December 21, the shortest day of the year, it rises at 5:42 AM and sets 11 hours, 38 minutes later, at 5:19 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 fall 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 Golfito is essentially constant during the fall, remaining around 100% throughout.

For reference, on May 30, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 28, the least muggy day of the year, there are muggy conditions 77% 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 Golfito is gradually decreasing during the fall, decreasing from 5.8 miles per hour to 4.9 miles per hour over the course of the season.

For reference, on October 9, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on January 7, the calmest day of the year, the daily average wind speed is 3.4 miles per hour.

The highest daily average wind speed during the fall is 7.1 miles per hour on October 9.

The hourly average wind direction in Golfito throughout the fall is predominantly from the west, with a peak proportion of 83% on October 1.

Golfito 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 Golfito is essentially constant during the fall, remaining within 1°F of 82°F throughout.

The lowest average surface water temperature during the fall is 82°F on November 2.

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 Golfito 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 Golfito are very rapidly increasing during the fall, increasing by 2,502°F, from 7,369°F to 9,871°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 Golfito is gradually increasing during the fall, rising by 0.8 kWh, from 3.5 kWh to 4.4 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the fall is 3.3 kWh on October 10.

For the purposes of this report, the geographical coordinates of Golfito are 8.603 deg latitude, -83.113 deg longitude, and 128 ft elevation.

The topography within 2 miles of Golfito contains very significant variations in elevation, with a maximum elevation change of 1,476 feet and an average elevation above sea level of 518 feet. Within 10 miles contains very significant variations in elevation (2,238 feet). Within 50 miles contains large variations in elevation (11,634 feet).

The area within 2 miles of Golfito is covered by trees (77%) and grassland (10%), within 10 miles by trees (45%) and water (26%), and within 50 miles by water (44%) and trees (32%).