When you picture summer in Algiers, you probably imagine long stretches of sunshine, warm nights, and barely any rain. Daytime highs usually land around 28°C to 32°C (82°F to 90°F), while nights stay mild at about 20°C (68°F). The season feels hot, sure, but it doesn’t get as punishing as it does in the country’s interior.
The air dries out a lot during these months, and by July and August, rain basically disappears. Humidity still hangs around, especially near the sea, so sometimes the heat feels heavier than the numbers suggest. The Mediterranean breeze often sweeps in, though, and honestly, it can make a big difference if you’re close to the water.
Summer brings the longest days of the year, with well over 10 hours of sunshine daily. That blend of light, warmth, and salty air creates the classic Mediterranean summer vibe that shapes Algiers’ whole coastal lifestyle.
Typical Summer Temperatures in Algiers
Summers in Algiers stretch out with dry, warm days and only a slight drop in temperature at night. Most days, the warmth climbs over 30°C, but evenings stay comfortable enough to linger outside.
Average Daytime Highs
Algiers keeps its summer days consistently warm. In July and August, the hottest months, highs usually sit between 28°C and 32°C (82°F–90°F).
The Mediterranean Sea helps keep the heat from getting out of hand, unlike what you’d find farther inland. Coastal breezes take the edge off, though you’ll still feel the sun’s intensity if you’re away from shade.
Unlike the desert regions, Algiers almost never sees highs above 35°C (95°F). The summer heat feels more manageable here, especially right by the sea.
Nighttime Lows
Evenings in Algiers stay warm without being stifling. Nighttime lows in July and August hover around 21°C to 23°C (70°F–73°F).
You can easily enjoy dinner outdoors or stroll after sunset—no need for extra layers. The sea keeps the nights from cooling down too much, a big contrast with the bigger temperature drops you’d get inland.
Humidity at night sits in the moderate range, so the air might feel a bit heavy, but it’s rarely uncomfortable. Most people find that a fan or some light air conditioning does the trick indoors.
Monthly Temperature Variations
Summer in Algiers runs mainly from June through September, with temperatures shifting a bit as the season goes on.
- June: Highs around 27°C (81°F), lows near 19°C (66°F)
- July: Highs around 30°C (86°F), lows near 21°C (70°F)
- August: Highs peak near 32°C (90°F), lows around 23°C (73°F)
- September: Highs ease back to 28°C (82°F), lows near 20°C (68°F)
You’ll notice a slow build-up of heat from June into August, then a gradual cooling in September. By late summer, the gap between day and night temperatures gets a bit wider, so evenings start to feel a little fresher while days stay warm.
Rainfall Patterns and Humidity During Summer
Rain almost vanishes from Algiers in summer, and humidity drops compared to the cooler months. You’ll see long stretches of dry, hot days, with only the rare light sprinkle.
Average Rainfall Amounts
Rainfall in Algiers during summer is low—really low. June brings about 10 mm, July drops to just 2 mm, and August gets around 6 mm. These numbers are tiny compared to autumn and winter.
Most of the city’s rain falls between late fall and early spring. In summer, Algiers picks up less than 5% of its yearly 638 mm total.
Skies stay mostly clear, and sunshine dominates, so the chance of any real rain is slim.
Number of Rainy Days
Rainy days are rare in Algiers’ summer. Usually, you’ll see:
- June: 2–3 days with light rain
- July: 1–2 days, usually just brief showers
- August: 2–3 days, mostly isolated events
These aren’t downpours—just quick, passing showers. Most days are dry from morning until night.
The lack of rain makes summer a reliable time for outdoor plans. If it does rain, it’s usually over fast and won’t mess up your day.
Humidity Levels
Humidity in Algiers drops in summer. You’ll get the lowest readings of the year in July and August, with average relative humidity around 59–62%.
Lower humidity makes the heat a bit easier to handle, even though midday temps can still go above 32°C.
Mornings might feel a little humid near the coast, but afternoons dry out thanks to the sea breezes. This is pretty typical for Mediterranean cities—hot, dry afternoons with just a hint of moisture early in the day.
With less humidity, you also get less cloud cover, so sunshine sticks around for hours.
Sunshine and Daylight Hours in Summer
Algiers’ summers come packed with long days and loads of direct sunlight. Clear skies and plenty of daylight shape not just the weather, but how people spend their time.
Average Daily Sunshine
Algiers pulls in between 10 and 11 hours of sunshine per day in summer. July stands out as the brightest, with about 11 hours and 17 minutes of sunlight on average. June and August aren’t far behind, clocking in at 10 hours and 36 minutes and 10 hours and 17 minutes.
That means about 73–79% of daylight hours are sunny. Most afternoons feel bright and warm, and overcast skies barely make an appearance.
Compared to spring or autumn, summer brings the highest proportion of clear, sunny days. It’s honestly the best season for anyone who wants to be outside or needs dependable weather for plans.
Daily Sunshine Hours
The direct sunlight you get each summer day in Algiers is among the best in North Africa. On average:
- June: ~10h 36m
- July: ~11h 17m
- August: ~10h 17m
These aren’t just occasional highs—they’re daily averages. The steady sunshine makes Algiers summers easy to predict if you’re planning anything outdoors.
The sun sits high in the sky at midday, reaching over 70° above the horizon in June and July. That strong, direct light bumps up UV levels, so midday can feel even hotter than the thermometer says.
Day Length Changes
Day length shifts slowly across the summer months. Around the solstice in late June, Algiers enjoys its longest days at about 14 hours and 37 minutes of daylight.
By July, days shorten just a bit to about 14 hours and 23 minutes. In August, they drop further to around 13 hours and 31 minutes. Even as summer winds down, you still get more than 13 hours of daylight—way more than in winter.
These long days mean you get extended evenings. Late sunsets and drawn-out afternoons give you extra time for whatever you want to do outdoors.
Sea Temperature and Coastal Conditions
The Mediterranean off Algiers heats up through late spring and hits its warmest in midsummer. The coast stays calm enough for swimming and water sports, though the sea’s temperature does shift from month to month.
Average Sea Temperature
Sea temperatures around Algiers follow a pretty steady pattern. In June, the water usually sits at 19–22°C (66–72°F). By July, it climbs to about 22–26°C (72–79°F), and in August, it peaks near 25–26°C (77–79°F).
September keeps things warm, averaging 23–26°C (73–79°F), before cooling off in autumn. These numbers come from years of satellite and coastal data, and they don’t change much year to year.
Monthly averages only vary by 2–3 degrees, so the water stays reliably warm all summer. Most people find the sea comfortable for swimming through the entire season.
Swimming Conditions
When the water’s above 22°C (72°F), most swimmers are happy without a wetsuit, and that’s the norm from July through September. June can feel a touch cool, especially in the mornings, but it’s still swimmable.
August is the sweet spot, with the warmest water and calm conditions along the beaches. Even in September, you can still enjoy long swims, though the air starts to cool a bit.
If you’re planning to stay in the water for a while in June, you might want a light wetsuit. By midsummer, regular swimwear is all you need. The warm sea temperatures and steady weather make this the best time for swimming and water activities.
Wind and Other Weather Factors
Summer in Algiers brings its own set of wind patterns and weather quirks. Breezes off the sea help cool things down, and air pressure and visibility play their part in day-to-day comfort.
Prevailing Winds
You’ll often notice steady breezes blowing in from the Mediterranean. These sea breezes carry cooler, slightly more humid air, taking the edge off the afternoon heat.
Sometimes, stronger gusts show up when pressure shifts between inland and coastal areas. Wind speeds usually fall between 3 to 6 meters per second (7–13 mph), just enough to refresh the air without causing problems.
Every now and then, hot, dry winds from the Sahara—the sirocco—blow into Algiers. When that happens, you’ll feel a sudden jump in temperature, humidity drops, and dust can hang in the air. It doesn’t happen often in summer, but it’s noticeable when it does.
For most people, those sea breezes make a real difference, especially later in the day. Outdoor activities stay more comfortable here than in places without that coastal wind.
Visibility and Air Pressure
Visibility in Algiers stays clear for most of the summer. On typical days, you can see well over 10 kilometers, which is great for both daily life and travel.
Air pressure doesn’t swing much, usually hovering around 1012–1016 hPa. That’s a sign of calm, settled summer weather. Big changes are rare, so you don’t really have to worry about sudden storms.
When sirocco winds do blow in, dust and haze can cut visibility down to a few kilometers. Air pressure might shift a bit, but it’s really the dust that makes the biggest impact.
Most of the time, though, you get steady, clear conditions, so summer in Algiers is pretty easy to plan around.
How Algiers’ Summer Weather Compares to Other Seasons
Summer in Algiers brings the hottest weather of the year, long daylight, and almost no rain. The rest of the year cools down, gets wetter, and cloudier, with big changes in how comfortable it feels to be outside.
Spring and Autumn Differences
Spring and autumn in Algiers act as the bridge between hot, dry summers and cool, wet winters. You’ll notice milder temperatures during these months, with highs in early spring around 18–20°C (mid-60s °F) and late spring reaching 22–24°C (low-70s °F). Autumn starts off warmer, often in the upper 70s °F (25–26°C), then cools off as the season goes on.
Rain picks up compared to summer. In spring, showers get more common by March and April, averaging 1.5–1.7 inches per month. Autumn sees even more rain, especially in October and November, when monthly totals can go over 2 inches. So, autumn turns out wetter than spring.
Cloud cover changes too. Spring skies are often partly clear, while autumn brings more clouds, especially in October. Humidity sits at moderate levels in both seasons, though you might get a few muggy days in September and early October when summer warmth lingers.
These shoulder seasons usually feel the most comfortable for sightseeing. You skip the intense summer heat and the heavier winter rains. Outdoor activities like walking tours and beach visits are just easier to enjoy with cooler air and fewer weather extremes.
Winter Weather Overview
Winter in Algiers feels like the coolest and wettest time of year. Daytime highs usually sit around 60°F (15–16°C), and at night, temps often dip to 42–45°F (5–7°C). That’s a pretty big shift from the summer, when you’ll see the mercury up in the 80s °F (27–30°C).
Rain really takes over in winter. December and January can bring 2–2.6 inches of rain each month, and you’ll notice more gray skies than usual. It tends to rain about once a week, and sometimes those storms get pretty windy. Snow almost never shows up in the city, but if you head inland to higher ground, you might spot a dusting.
Humidity doesn’t usually get out of hand, but the cool, damp air can feel surprisingly chilly, especially if the wind kicks up off the Mediterranean. The days feel short too, with just 9–10 hours of daylight in December. That’s a big difference from the long, sunny days of summer.
Even with the cooler, wetter vibe, winter here actually feels pretty mild compared to a lot of other places. You’ll probably be fine exploring the city in a light jacket. Just don’t count on swimming or lounging at the beach right now.