When you plan a trip to Constantine in the fall, you’ll notice a clear shift from the lingering heat of summer to days that feel cooler and a lot more comfortable. Average fall weather in Constantine brings mild temperatures, more rainfall, and shorter daylight hours, so the season feels refreshing—sometimes even a bit unpredictable. It’s a unique time to wander the city’s historic streets or just soak in those dramatic landscapes.
September still hangs on to some of that summer warmth, but October and November cool down steadily. Rain picks up, and the air gets crisper as fall moves along.
These changes shape the climate and also influence the daily rhythm of life in Constantine.
If you know what to expect, you can plan better—whether you’re exploring outdoor attractions, snapping photos of those famous bridges, or just enjoying the local vibe.
Looking at temperature trends, rainfall, daylight, and other weather patterns helps you make the most of autumn in Constantine.
Overview of Fall Weather in Constantine
Fall in Constantine brings cooler temperatures, shorter days, and a clear rise in cloud cover and rainfall. The season really shows off the city’s Mediterranean setting, where geography and shifting weather combine to shape daily life.
Location and Geography
Constantine sits in northeastern Algeria at about 1,880 feet (573 meters) above sea level. The city spreads across a plateau, surrounded by deep gorges carved by the Rhumel River, which stirs up local airflow and temperature swings.
Most of the urban area is made up of artificial surfaces and cropland, while the outskirts feature farmland and scattered forests. These land features affect how heat comes and goes, so nights get cooler and daytime temps can swing a bit.
Since Constantine lies inland, it doesn’t get the Mediterranean Sea’s moderating influence as much as places like Algiers or Annaba. Its higher elevation and rugged landscape make for sharper seasonal contrasts.
Fall weather here feels noticeably cooler and wetter compared to those hot, dry summers.
Mediterranean Climate Characteristics
Constantine has a Mediterranean climate (Csa classification), with hot, dry summers and cooler, wetter winters. Fall acts as the bridge between the two, ending the dry season as rainfall ramps up.
Daylight drops quickly, losing about 3 hours from early September to late November. Sunrises come later, sunsets earlier, which shortens the window for outdoor plans.
Humidity stays pretty comfortable. The chance of muggy days drops from around 7% in early September to almost zero by late November. Winds pick up a bit, too, shifting from mostly northern in September to more western by late November.
These features make fall one of the more balanced times of year, offering moderate warmth during the day without the extremes of summer or winter.
Typical Fall Weather Patterns
Average daily high temperatures fall from around 89°F (32°C) in early September to about 59°F (15°C) by late November. Nighttime lows go from about 64°F (18°C) down to 42°F (6°C). You’ll definitely feel cooler evenings and mornings, especially as November rolls in.
Cloud cover builds steadily. Clear skies are common in early September, but by late fall, they’re a lot less frequent. The odds of overcast or mostly cloudy days rise from about 22% to nearly 45%.
Rainfall climbs, too. At the season’s start, the average 31‑day rainfall is about 1 inch (25 mm), but by November, it more than doubles to around 2.3 inches (58 mm). Fall marks the start of Constantine’s wetter half of the year.
Nearby Mediterranean surface water temperatures cool from about 78°F (26°C) to 65°F (18°C), reinforcing the seasonal shift. Stronger winds and shorter days only add to the feeling that winter’s on the way.
Temperature Trends During Fall
In Constantine, fall brings a steady cooling pattern with shorter days and longer nights. You’ll notice a clear drop in both daytime highs and nighttime lows, plus wider temperature swings as autumn moves forward.
Average Daytime and Nighttime Temperatures
Early in the season, daytime highs often reach the upper 80s°F (around 31°C). By the end of November, highs drop closer to 59°F (15°C). The change happens gradually, but it’s hard to miss—outdoor conditions get much cooler by late fall.
Nighttime lows fall even faster. In September, expect lows near 64°F (18°C), but by late fall, they’re down to around 42°F (6°C). Nights feel crisp, especially at higher spots in Constantine.
You’ll want lighter clothes in September, but by November, warmer layers make sense. The gap between day and night temperatures widens, so packing for both warm afternoons and chilly evenings is just practical.
Monthly Temperature Variations
Fall in Constantine covers September, October, and November. Each month brings a clear step down in highs and lows.
- September: Highs average around 85–89°F (29–32°C), lows near 60–64°F (16–18°C).
- October: Highs drop to 70–75°F (21–24°C), lows near 50°F (10°C).
- November: Highs average 59–63°F (15–17°C), with lows at 42–46°F (6–8°C).
September still feels like late summer, but November is more like early winter. The changes are steady, so you can plan for cooler weather as each week passes.
Record Highs and Lows
While averages give you a pretty good idea, Constantine has seen some extremes in fall. Record highs have hit the upper 90s°F (36–37°C) in early September, though that’s not the norm.
On the cold side, nighttime temps have sometimes dropped just above freezing (near 36°F / 2°C) by late fall. These chilly nights are rare, but possible, especially when clear skies let heat escape fast.
The spread between record highs and lows shows just how variable Constantine’s fall can be. Some afternoons might feel like summer, while nights can remind you that winter’s not far off.
Rainfall and Precipitation Patterns
Rainfall in Constantine during fall shifts quickly from dry summer to wetter days. You’ll see steady increases in both total rain and the number of days with measurable precipitation as the season goes on.
Monthly Rainfall Totals
September usually gets about 26 mm (1 inch) of rain. By October, that rises to around 40–50 mm (1.6–2 inches). November is the wettest fall month, often reaching 55–60 mm (2.1–2.4 inches).
Rainfall nearly doubles from early to late fall. This uptick fits the Mediterranean climate, where autumn storms become more frequent.
Year to year, totals can jump around. Some Novembers go over 100 mm (4 inches), while drier years might stick closer to 30 mm (1.2 inches).
| Month | Average Rainfall (mm) | Average Rainfall (inches) |
|---|---|---|
| September | ~26 mm | ~1.0 in |
| October | ~40–50 mm | ~1.6–2.0 in |
| November | ~55–60 mm | ~2.1–2.4 in |
Number of Rainy Days in Fall
The number of rainy days climbs as fall moves along. September usually brings 3–4 wet days. October averages 5–6 days, and November often has 7–9 days with measurable rain.
A “wet day” means at least 1 mm of precipitation, which makes month-to-month comparisons easier.
Sometimes, November brings rain nearly a third of the month, though most days stay dry. September still feels more like summer, with rain events that are scattered and brief.
This rise in rainy days signals the lead-up to Constantine’s wetter winter season.
Rainfall Intensity and Distribution
Most fall rain in Constantine is light to moderate, but storms can get intense, especially in October and November. Short bursts of heavy rain are pretty common late in the season.
Passing Mediterranean systems bring most of the showers, which often last just a few hours and are separated by dry stretches.
You rarely get long, multi-day rain events in fall. Instead, rain comes in several shorter bursts. This pattern lets the soil absorb water better, but sudden downpours can still cause local runoff and brief flooding in low spots.
Rainfall isn’t evenly spread out. Some weeks stay dry, while others bring several wet days. This irregularity is just part of the region’s autumn climate.
Sunshine Hours and Daylight
During fall in Constantine, you get shorter days and fewer hours of direct sun compared to summer. The season brings clear shifts in daylight that shape the atmosphere and affect how you plan your days.
Average Daily Sunshine Hours
Early fall still offers a decent amount of bright weather, especially in September. On average, the city gets about 7 to 9 hours of sunshine per day during this month.
By October, that drops to 6 to 7 hours. In November, you’re down to around 5 to 6 hours.
These averages reflect the move from dry, warm weather to cooler, wetter days. While October and November bring more clouds, you’ll still find some clear days, especially early in the season.
Sunshine hours decrease gradually, so you’ll notice the difference more toward late November. That shift is often a sign that Constantine’s colder, wetter winter is just around the corner.
Changes in Day Length During Fall
Day length drops steadily as fall progresses. In September, you get about 12.3 hours of daylight at the start of the month. By late November, that shortens to around 10 hours.
Here’s a quick breakdown:
| Month | Approx. Daylight Hours |
|---|---|
| September | 11.5–12.5 hours |
| October | 10.5–11.5 hours |
| November | 10–10.5 hours |
Sunrise happens later each morning, and sunset comes earlier in the evening. This gradual shift changes the daily rhythm, especially if you rely on natural light for work or travel.
By late fall, shorter days and cooler weather slow things down compared to the long, bright days of summer.
Impact on Outdoor Activities
Less sunshine and fewer daylight hours definitely affect how you plan outdoor activities. In September, you can still enjoy long afternoon walks or sightseeing with plenty of daylight.
Tourists usually prefer September and early October for exploring outside, since the balance of light and mild temps is ideal. Hiking, city tours, and photography are just easier when there’s more sun.
By late fall, those shorter days encourage earlier outings. If you want to visit Constantine’s bridges, markets, or nearby natural spots, late morning or early afternoon is best. That way, you make the most of available daylight before sunset.
Wind Speed and Weather Variability
During fall in Constantine, you’ll notice a mix of moderate winds, changing seasonal patterns, and shifts in daily comfort. Wind speed, direction, and gusts all shape how the weather feels and how you plan your time outside.
Average Wind Speed by Month
Wind speeds in Constantine pick up as fall goes from September to November. Early fall stays pretty calm, but later months bring stronger breezes as winter nears.
In September, average wind speed hovers around 6–7 mph (10–11 km/h). By October, speeds rise a bit to 7–8 mph (11–13 km/h). November kicks off the windier period, with averages often topping 8 mph (13+ km/h).
The bump in wind speed during late fall lines up with shifting weather systems that carry cooler air into the area. These changes also connect to higher chances of rain and cloudier skies.
| Month | Avg. Wind Speed |
|---|---|
| September | ~6–7 mph |
| October | ~7–8 mph |
| November | 8+ mph |
This gradual rise in wind speed signals the move from Constantine’s dry, warm summer into its cooler, wetter winter.
Wind Patterns and Directions
Wind direction in Constantine changes with the seasons. In early fall, breezes usually blow in from the northwest, bringing cooler air from inland.
By mid to late fall, you’ll notice winds coming more from the west and southwest. These winds carry extra moisture and lead to increased rainfall.
Mediterranean weather systems play a big role in these patterns. Since the city sits near the coast and higher up, you’ll often feel stronger gusts than people do in the lowlands.
Wind speeds usually pick up in the afternoon, then calm down at night. That’s pretty typical for places with both coastal and inland influences.
Effects of Wind on Daily Life
Wind in Constantine shapes your daily routine, whether you’re out and about or just relaxing at home. In September, calmer conditions make it pleasant to wander through open-air markets or stroll around the city. By November, stronger gusts can make evenings feel much colder than you’d expect.
If you’re traveling, steady fall winds add a bit of a chill, so wearing layers just makes sense. Locals usually plan outdoor events earlier in the day when the wind’s not as strong.
Farmers nearby have to deal with the wind, too. Stronger breezes in late fall help dry out the fields after rain, but they can also make harvesting tougher.
Drivers need to watch out for higher winds on open roads, especially in November.
Relative Humidity and Atmospheric Conditions
In the fall, Constantine’s air turns more humid than during the dry summer. Cooler nights, shorter days, and the return of light rainfall bring noticeable changes to how the air feels and how comfortable you are outside.
Typical Humidity Levels in Fall
Humidity in Constantine goes up steadily as fall moves along. In September, dry summer air still lingers, and you’ll usually see humidity around 45–55% during the day.
By November, cooler weather and more rain push humidity closer to 65–70%.
You’ll probably notice mornings and evenings feel damper, while midday is still pretty dry when things warm up. That kind of daily cycle is just part of life in Mediterranean climates where fall weather shifts gradually.
The humidity doesn’t get extreme, but it’s definitely a change from summer’s dry heat. It creeps up slowly, so you’ll feel more moisture without any sudden, uncomfortable jumps.
Humidity Fluctuations by Month
Humidity shifts month by month as temperatures drop and rain picks up.
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September: Warm afternoons keep humidity lower, around 50%, and you only get a handful of rainy days.
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October: Daytime highs drop off, and humidity rises to about 55–60%, especially in the mornings.
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November: Nights get colder and rainier. Humidity often hits 65% or higher, with more cloudy days.
So, September still feels kind of dry, October sits somewhere in the middle, and November definitely feels wetter. Even then, humidity doesn’t really reach those heavy, sticky levels you’d find in coastal cities.
If you pay attention to these changes, you can plan your outdoor activities or travel a bit better. Hiking in September feels dry and warm, but by November, you might want to grab a jacket for the damp air and cooler wind.
Influence on Comfort and Health
Most visitors find fall humidity in Constantine pretty moderate and easy to handle. The air usually isn’t sticky, but you might notice a bit more moisture in the mornings. Sometimes, that extra moisture actually makes the air feel cooler than what the thermometer says.
If you deal with respiratory sensitivities, you’ll probably appreciate the added humidity. It tends to ease dryness in your throat and skin, especially when you compare it to the dry summer months.
But those damp November evenings? They can feel chilly, especially if you forget to dress in layers.
Indoor spaces react to these changes too. Homes and hotels often feel fresher with a little more moisture in the air. Still, you’ve got to keep up with ventilation, or things can get musty fast.
For travelers, this mix of moderate humidity and mild temperatures usually makes sightseeing and outdoor activities pretty comfortable.