Climate and Average Weather Year Round in Darnah Libya
In Darnah, the summers are hot, muggy, arid, and clear; the winters are cool and mostly clear; and it is windy year round. Over the course of the year, the temperature typically varies from 52°F to 87°F and is rarely below 49°F or above 91°F.
Based on the beach/pool score, the best time of year to visit Darnah for hot-weather activities is from mid June to late September.
Climate in Darnah
The hot season lasts for 3.8 months, from June 10 to October 2, with an average daily high temperature above 82°F. The hottest month of the year in Darnah is August, with an average high of 87°F and low of 75°F.
The cool season lasts for 3.5 months, from December 6 to March 24, with an average daily high temperature below 67°F. The coldest month of the year in Darnah is February, with an average low of 53°F and high of 62°F.
Average High and Low Temperature in Darnah
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Darnah
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
In Darnah, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Darnah begins around June 3 and lasts for 4.0 months, ending around October 4.
The clearest month of the year in Darnah is July, during which on average the sky is clear, mostly clear, or partly cloudy 100% of the time.
The cloudier part of the year begins around October 4 and lasts for 8.0 months, ending around June 3.
The cloudiest month of the year in Darnah is December, during which on average the sky is overcast or mostly cloudy 32% of the time.
Cloud Cover Categories in Darnah
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Darnah varies throughout the year.
The wetter season lasts 4.7 months, from October 23 to March 14, with a greater than 10% chance of a given day being a wet day. The month with the most wet days in Darnah is January, with an average of 5.4 days with at least 0.04 inches of precipitation.
The drier season lasts 7.3 months, from March 14 to October 23. The month with the fewest wet days in Darnah is August, with an average of 0.2 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 Darnah is January, with an average of 5.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 19% on January 2.
Daily Chance of Precipitation in Darnah
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. Darnah experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 5.5 months, from October 9 to March 26, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Darnah is January, with an average rainfall of 1.6 inches.
The rainless period of the year lasts for 6.5 months, from March 26 to October 9. The month with the least rain in Darnah is July, with an average rainfall of 0.0 inches.
Average Monthly Rainfall in Darnah
The length of the day in Darnah varies significantly over the course of the year. In 2023, the shortest day is December 22, with 10 hours, 0 minutes of daylight; the longest day is June 21, with 14 hours, 19 minutes of daylight.
Hours of Daylight and Twilight in Darnah
The earliest sunrise is at 5:20 AM on June 12, and the latest sunrise is 2 hours, 12 minutes later at 7:32 AM on January 9. The earliest sunset is at 5:22 PM on December 4, and the latest sunset is 2 hours, 19 minutes later at 7:41 PM on June 30.
Daylight saving time (DST) is not observed in Darnah during 2023.
Sunrise & Sunset with Twilight in Darnah
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 Darnah
The figure below presents a compact representation of key lunar data for 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.
Moon Rise, Set & Phases in Darnah
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.
Darnah experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.9 months, from June 14 to October 11, during which time the comfort level is muggy, oppressive, or miserable at least 18% of the time. The month with the most muggy days in Darnah is August, with 21.8 days that are muggy or worse.
The least muggy day of the year is February 26, when muggy conditions are essentially unheard of.
Humidity Comfort Levels in Darnah
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Darnah experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 4.7 months, from November 25 to April 14, with average wind speeds of more than 11.9 miles per hour. The windiest month of the year in Darnah is February, with an average hourly wind speed of 13.7 miles per hour.
The calmer time of year lasts for 7.3 months, from April 14 to November 25. The calmest month of the year in Darnah is October, with an average hourly wind speed of 10.0 miles per hour.
Average Wind Speed in Darnah
The predominant average hourly wind direction in Darnah varies throughout the year.
The wind is most often from the north for 7.5 months, from April 7 to November 21, with a peak percentage of 86% on July 24. The wind is most often from the west for 4.5 months, from November 21 to April 7, with a peak percentage of 42% on January 1.
Wind Direction in Darnah
Darnah 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 3.3 months, from July 5 to October 15, with an average temperature above 76°F. The month of the year in Darnah with the warmest water is August, with an average temperature of 79°F.
The time of year with cooler water lasts for 4.1 months, from January 2 to May 6, with an average temperature below 65°F. The month of the year in Darnah with the coolest water is March, with an average temperature of 62°F.
Average Water Temperature in Darnah
To characterize how pleasant the weather is in Darnah 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 times of year to visit Darnah for general outdoor tourist activities are from mid April to mid July and from mid September to mid November, with a peak score in the second week of June.
Tourism Score in Darnah
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 Darnah for hot-weather activities is from mid June to late September, with a peak score in the second week of July.
Beach/Pool Score in Darnah
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 in Darnah 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 Darnah
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
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.
Growing Degree Days in Darnah
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 3.6 months, from May 6 to August 26, with an average daily incident shortwave energy per square meter above 7.3 kWh. The brightest month of the year in Darnah is July, with an average of 8.3 kWh.
The darker period of the year lasts for 3.2 months, from November 4 to February 10, with an average daily incident shortwave energy per square meter below 3.9 kWh. The darkest month of the year in Darnah is December, with an average of 2.8 kWh.
Average Daily Incident Shortwave Solar Energy in Darnah
For the purposes of this report, the geographical coordinates of Darnah are 32.767 deg latitude, 22.637 deg longitude, and 30 ft elevation.
The topography within 2 miles of Darnah contains very significant variations in elevation, with a maximum elevation change of 873 feet and an average elevation above sea level of 158 feet. Within 10 miles also contains very significant variations in elevation (1,299 feet). Within 50 miles contains very significant variations in elevation (2,946 feet).
The area within 2 miles of Darnah is covered by water (41%), artificial surfaces (28%), and grassland (11%), within 10 miles by water (49%) and shrubs (16%), and within 50 miles by water (55%) and sparse vegetation (15%).
This report illustrates the typical weather in Darnah, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Darnah is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.
The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Darnah, according to the International Standard Atmosphere .
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.
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.
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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