Summer Weather in Alaïli Ḏaḏḏa‘ Djibouti

Daily high temperatures are around 99°F, rarely falling below 89°F or exceeding 107°F. The highest daily average high temperature is 102°F on July 12.

Daily low temperatures are around 83°F, rarely falling below 78°F or exceeding 89°F. The highest daily average low temperature is 86°F on July 14.

For reference, on July 9, the hottest day of the year, temperatures in Alaïli Ḏaḏḏa‘ typically range from 86°F to 102°F, while on December 28, the coldest day of the year, they range from 68°F to 83°F.

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.

Tibú, Colombia (7,793 miles away) and Qui Nhon, Vietnam (4,455 miles) are the far-away foreign places with temperatures most similar to Alaïli Ḏaḏḏa‘ (view comparison).

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The summer in Alaïli Ḏaḏḏa‘ experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 75% to 65%. The highest chance of overcast or mostly cloudy conditions is 76% on June 7.

The clearest day of the summer is August 27, with clear, mostly clear, or partly cloudy conditions 36% of the time.

For reference, on June 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 76%, while on November 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Alaïli Ḏaḏḏa‘, the chance of a wet day over the course of the summer is very rapidly increasing, starting the season at 8% and ending it at 24%.

For reference, the year's highest daily chance of a wet day is 28% on August 20, and its lowest chance is 2% on December 29.

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 Alaïli Ḏaḏḏa‘ is increasing, starting the season at 0.5 inches, when it rarely exceeds 1.7 inches, and ending the season at 1.5 inches, when it rarely exceeds 2.6 inches or falls below 0.2 inches.

The highest average 31-day accumulation is 1.5 inches on August 17. The lowest average 31-day accumulation is 0.4 inches on June 15.

Over the course of the summer in Alaïli Ḏaḏḏa‘, the length of the day is gradually decreasing. From the start to the end of the season, the length of the day decreases by 27 minutes, implying an average daily decrease of 17 seconds, and weekly decrease of 2 minutes, 2 seconds.

The shortest day of the summer is August 31, with 12 hours, 22 minutes of daylight and the longest day is June 22, with 12 hours, 51 minutes of daylight.

The earliest sunrise of the summer in Alaïli Ḏaḏḏa‘ is 5:42 AM on June 1 and the latest sunrise is 16 minutes later at 5:57 AM on August 31.

The latest sunset is 6:38 PM on July 10 and the earliest sunset is 18 minutes earlier at 6:19 PM on August 31.

Daylight saving time is not observed in Alaïli Ḏaḏḏa‘ during 2026.

For reference, on June 21, the longest day of the year, the Sun rises at 5:44 AM and sets 12 hours, 51 minutes later, at 6:35 PM, while on December 21, the shortest day of the year, it rises at 6:24 AM and sets 11 hours, 24 minutes later, at 5:48 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 summer of 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. 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 Alaïli Ḏaḏḏa‘ is increasing during the summer, rising from 84% to 93% over the course of the season.

The lowest chance of a muggy day during the summer is 68% on June 29.

For reference, on September 15, the muggiest day of the year, there are muggy conditions 96% of the time, while on December 30, the least muggy day of the year, there are muggy conditions 52% 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 Alaïli Ḏaḏḏa‘ is gradually increasing during the summer, increasing from 8.9 miles per hour to 9.6 miles per hour over the course of the season.

For reference, on January 17, the windiest day of the year, the daily average wind speed is 16.0 miles per hour, while on September 16, the calmest day of the year, the daily average wind speed is 8.2 miles per hour.

The highest daily average wind speed during the summer is 12.3 miles per hour on July 20.

The wind direction in Alaïli Ḏaḏḏa‘ during the summer is predominantly out of the north from June 1 to June 15 and the west from June 15 to August 31.

Alaïli Ḏaḏḏa‘ 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 Alaïli Ḏaḏḏa‘ is essentially constant during the summer, remaining within 1°F of 87°F throughout.

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 Alaïli Ḏaḏḏa‘ 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 Alaïli Ḏaḏḏa‘ are very rapidly increasing during the summer, increasing by 3,229°F, from 4,345°F to 7,574°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 Alaïli Ḏaḏḏa‘ is essentially constant during the summer, remaining within 0.3 kWh of 5.7 kWh throughout.

The lowest average daily incident shortwave solar energy during the summer is 5.4 kWh on July 24.

For the purposes of this report, the geographical coordinates of Alaïli Ḏaḏḏa‘ are 12.422 deg latitude, 42.896 deg longitude, and 1,171 ft elevation.

The topography within 2 miles of Alaïli Ḏaḏḏa‘ contains significant variations in elevation, with a maximum elevation change of 669 feet and an average elevation above sea level of 1,304 feet. Within 10 miles contains significant variations in elevation (1,965 feet). Within 50 miles contains very significant variations in elevation (6,647 feet).

The area within 2 miles of Alaïli Ḏaḏḏa‘ is covered by bare soil (63%) and sparse vegetation (37%), within 10 miles by bare soil (72%) and sparse vegetation (18%), and within 50 miles by bare soil (49%) and water (30%).