Last updated: August 21, 2025
In September, Constantine, Algeria experiences a warm transition as temperatures range from a minimum of 9°C (48°F) at night to a sweltering maximum of 38°C (100°F) during the day, with an average temperature settling at a comfortable 23°C (73°F). This month marks a shift in weather patterns with 39 mm (1.5 in) of rainfall spread across 8 days, contributing to a humidity level of 66%. Visitors can expect a blend of sunny days and occasional light showers, making it essential to prepare for a variety of weather conditions while exploring this historic city.
In September, temperatures in Constantine, Algeria begin to showcase a transition from the blazing summer heat towards milder autumn days. With minimums around 9°C (48°F) and averages reaching 23°C (73°F), the month still retains warmth but starts to cool down compared to the peak summer months. The maximum temperature soars to a remarkable 38°C (100°F), hinting at the lingering intensity of summer. This balance of warm days with cooler nights captures the essence of early fall in the region, inviting visitors to enjoy the beautiful landscapes under the warm sun without the oppressive heat of July and August. Overall, September serves as a delightful bridge, maintaining a comfortable climate while hinting at the cooler days ahead.
In September, Constantine, Algeria, experiences a modest uptick in precipitation, with 39 mm (1.5 in) of rain falling over 8 days. This marks a noteworthy increase from the drier summer months, particularly July, which saw only 9 mm (0.3 in) across a mere 2 days. As the city transitions from the scorching heat of summer, the arrival of autumn brings a refreshing shift, contributing to the overall annual precipitation pattern that peaks in the spring months. This gradual change not only enhances the landscape but also sets the stage for the upcoming wetter months, indicating that the city's climate is gearing up for a more vibrant and lush environment.
In September, humidity levels in Constantine, Algeria experience a modest increase, rising to 66% after the drier summer months of July and August, which both recorded a low of 59%. This uptick signifies a transition towards the fall season, reflecting the gradual replenishment of moisture in the air as temperatures cool. Interestingly, September's humidity is still notably lower than the winter months, where levels soar back to the high 70s. Overall, this pattern highlights a clear trend of decreasing humidity through the warm summer, followed by a slight rise as autumn approaches, setting the stage for the wetter months ahead.
As summer fades into autumn in Constantine, Algeria, September presents a UV Index of 8, categorized as very high. This marks a slight decline from the peak readings in June and July, which registered at 11, yet still demands caution as the burn time remains at 15 minutes. The trend indicates that while ultraviolet exposure gradually decreases as the year progresses, the intensity in early fall still necessitates protective measures, particularly during midday hours. Be mindful of your sun exposure and stay informed by checking the Constantine UV Index for updates throughout the month.
UV Risk Categories
September in Constantine, Algeria, continues the trend of abundant sunshine that characterizes the summer months. With 327 hours of sunshine, the month marks a slight decrease from the peak of 405 hours in July, yet it remains a vibrant time, benefiting from the lingering warmth of summer. As autumn approaches, the sunny days gradually transition into cooler temperatures, but September still offers ample opportunity for outdoor activities and exploration. This month embodies a balance between summer’s intensity and the gentle onset of fall, inviting both locals and visitors to enjoy the picturesque landscapes bathed in sunlight.
In September, Constantine, Algeria typically enjoys a 54% chance of sunny weather, making it a pleasant time for outdoor activities. This percentage reflects a slight dip from the sun-drenched days of July and August, which boast impressive chances of 81% and 79% respectively. However, September's likelihood is still notably higher than the spring months, where sunshine is less reliable. As summer transitions into autumn, residents and visitors alike can expect a balanced mix of sun and cloud, perfect for exploring the city’s rich history and stunning landscapes. The trend reveals that while summer steals the spotlight, September maintains a respectable position, inviting individuals to bask in the serene charm of the season.
As summer draws to a close in September, the daylight hours in Constantine, Algeria begin to gradually diminish, offering a total of 12 hours of light. This transition marks a shift from the long, sun-drenched days of July and August, where the daylight peaked at 14 hours. The decline in daylight is a precursor to autumn, which brings with it a notable change in the rhythm of daily life. Following September, daylight hours will further decrease into the cooler months, settling at 11 hours in October and continuing the trend downward to just 9 hours by December. This natural ebb and flow of sunlight beautifully illustrates the seasonal dance of light in Constantine, inviting both reflection and appreciation for the changing landscape.
As September arrives in Constantine, Algeria, the gentle embrace of the wind subtly shifts. With an average speed of 2.0 m/s (5 mph), the breeze in September mirrors that of earlier summer months, characterized by its mild and steady presence. Throughout the year, wind speeds fluctuate modestly, peaking in November (2.4 m/s) and dipping to its lowest in March (2.0 m/s). The consistency of wind patterns, especially in the warmer months, creates a pleasant atmosphere perfect for enjoying the stunning landscapes of this historic city. As summer gives way to fall, the calming winds serve as a delightful reminder of the changing seasons, inviting both locals and visitors to savor the serene beauty of September in Constantine.
Weather in Constantine varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Constantine, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Constantine range from a minimum of 9°C (48°F) to a maximum of 38°C (100°F), offering a warm average of 23°C (73°F). The month experiences around 39 mm (1.5 in) of precipitation over 8 days, with humidity levels at 66%. In contrast, January presents a much cooler climate, with temperatures dipping to a minimum of -5°C (24°F) and peaking at 23°C (73°F), averaging 7°C (45°F). This month sees slightly less rainfall at 32 mm (1.3 in) over 7 days, while humidity rises to 77%. For more detailed information, you can explore Constantine weather in January.
September and February present stark contrasts in weather conditions. September typically boasts a wide temperature range, with minimums of 9°C (48°F) and maximums soaring up to 38°C (100°F), resulting in an average of 23°C (73°F). The month experiences around 39 mm (1.5 in) of precipitation over approximately 8 days with a humidity level of 66%. In contrast, February is much cooler, featuring minimum temperatures that can drop to -1°C (30°F) and a maximum of 25°C (77°F), leading to an average of just 9°C (49°F). It sees slightly less rainfall at 32 mm (1.3 in) over 7 days but has higher humidity at 75%. For more specific details about the weather in February, you can check Constantine weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 9°C (48°F) to a scorching maximum of 38°C (100°F), with an average of 23°C (73°F). This month also experiences relatively low precipitation at 39 mm (1.5 in) over 8 days, coupled with a humidity level of 66%. In contrast, March has cooler temperatures, with a minimum of 0°C (31°F) and a maximum of 25°C (76°F), averaging at 11°C (52°F). It sees more precipitation, totaling 62 mm (2.4 in) over 9 days, and slightly higher humidity at 73%. For a detailed outlook on March weather, you can check Constantine weather in March.
In September, the weather tends to be quite warm, with average temperatures around 23°C (73°F) and highs that can reach up to 38°C (100°F). The month sees relatively moderate precipitation of 39 mm (1.5 in) over approximately 8 days, along with a humidity level of 66%. In contrast, April experiences cooler temperatures, with an average of 14°C (58°F) and highs peaking at 29°C (85°F). April is also wetter, recording 62 mm (2.4 in) of precipitation over 11 days and slightly higher humidity at 70%. For a detailed look at the April weather in the region, you can check Constantine weather in April.
In comparing the weather conditions of September and May, September tends to be warmer, with average temperatures around 23°C (73°F) and peaks reaching as high as 38°C (100°F). In contrast, May has cooler average temperatures at 18°C (66°F), with maximums of 35°C (95°F). While both months experience a similar number of rainy days—about 8—the total precipitation is slightly higher in May at 51 mm (2.0 in) compared to September's 39 mm (1.5 in). Humidity levels are also comparable, with September at 66% and May slightly higher at 67%. For more detailed information, you can check out Constantine weather in May.
In September, temperatures generally range from a minimum of 9°C (48°F) to a maximum of 38°C (100°F), with an average of 23°C (73°F). The month sees a total precipitation of 39 mm (1.5 in) over approximately 8 days, coupled with a humidity level of 66%. In contrast, June experiences slightly warmer temperatures, with a minimum of 9°C (48°F) and a maximum of 41°C (106°F), averaging 24°C (75°F). June is also drier, receiving only 19 mm (0.7 in) of precipitation across 6 days and slightly lower humidity at 63%. For more detailed insights, check out Constantine weather in June.
When comparing the weather in September and July, notable differences in temperature, precipitation, and humidity emerge. September features a more moderate temperature range, with minimums dipping to 9°C (48°F) and average highs of 23°C (73°F), while July experiences warmer conditions, with minimums at 15°C (59°F) and average highs reaching 28°C (83°F). Additionally, July is characterized by significantly lower precipitation, with only 9 mm (0.3 in) over just 2 days compared to September's 39 mm (1.5 in) across 8 days, indicating a wetter month. Humidity levels also differ, as September's humidity averages around 66%, which is higher than July's 59%. For more detailed insights on July weather, you can visit Constantine weather in July.
In comparing the weather of September and August, we can observe distinct differences in temperature and humidity levels. August tends to be warmer, with minimum temperatures starting at 16°C (61°F) and average highs reaching up to 43°C (109°F). In contrast, September sees lower minimum temperatures of 9°C (48°F) and average highs of 38°C (100°F). Precipitation is also more frequent in September, with 39 mm (1.5 in) over 8 days, compared to 21 mm (0.8 in) across 6 days in August. Additionally, September has a higher humidity level at 66%, while August maintains a more comfortable 59%. For more detailed insights on August conditions, you can check Constantine weather in August.
September typically experiences a warmer climate, with average temperatures reaching up to 23°C (73°F) and maximum highs soaring to 38°C (100°F). In contrast, October sees a notable drop in temperature, with an average of 17°C (63°F) and maximums around 31°C (88°F). Both months receive similar amounts of precipitation, averaging 39 mm, but October tends to be slightly wetter with 1.6 inches of rain over 7 days compared to September's 1.5 inches over 8 days. Additionally, October's humidity levels rise to 71%, making the air feel a bit more humid than in September, which recorded 66%. For more detailed information, check out Constantine weather in October.
September and November present a stark contrast in weather conditions. September boasts warmer temperatures, with a minimum of 9°C (48°F) and an average of 23°C (73°F), reaching as high as 38°C (100°F). Although it's relatively dry with 39 mm (1.5 in) of precipitation over 8 days, humidity levels are around 66%. In contrast, November experiences cooler temperatures, where the minimum dips to 1°C (33°F) and the average settles at 12°C (54°F), with a maximum of 28°C (82°F). Rainfall increases slightly to 42 mm (1.6 in) over 9 days, and humidity rises to 71%. For more detailed insight into the weather during this month, check out Constantine weather in November.
In September, the weather is significantly warmer, with average temperatures reaching 23°C (73°F) and highs soaring up to 38°C (100°F). In contrast, December brings much cooler conditions, with average temperatures dropping to 9°C (48°F) and maximums only reaching 20°C (68°F). While both months experience precipitation over eight days, December tends to have slightly higher rainfall at 49 mm (1.9 in) compared to September's 39 mm (1.5 in). Additionally, the humidity levels rise from 66% in September to 76% in December, contributing to a chillier feel as the year comes to a close. For more details on the weather, you can refer to Constantine weather in December.
As September arrives in Constantine, the weather begins to transition from the intense summer heat to a more temperate climate. Daytime temperatures can still soar, hitting highs reminiscent of summer while the nights offer a refreshing reprieve with cooler lows. With an average temperature of 23°C (73°F), it strikes a pleasant balance for outdoor activities. Although precipitation becomes slightly more frequent, totaling around 39 mm over 8 days, it brings much-needed relief from the dry spell, enhancing the region's lush landscapes. In contrast to the sweltering summer months, September's humidity level of 66% may feel more comfortable, inviting locals and tourists alike to enjoy all that this historical destination has to offer. For more insights on weather patterns, visit Constantine Climate.