Last updated: February 6, 2025
Experience the vibrant weather of Piraeus in September, where temperatures can soar to a scorching 37°C (98°F), balanced by a pleasant average of 24°C (76°F) and refreshing lows of 13°C (55°F). This month sees a modest precipitation total of 17 mm (0.7 in), with rain gracing the city on just 2 days, allowing ample opportunity to enjoy the outdoors. With humidity levels around 65%, the air is comfortably warm, ideal for exploring and soaking up the last days of summer.
In September, Piraeus embraces the fading warmth of summer with a delightful transition, as temperatures range from a mild 13°C (55°F) at night to a pleasant 24°C (76°F) during the day, reaching a peak of 37°C (98°F). It's a time when the sweltering heat of August starts to ease, yet many still bask in the sun's embrace, making the city's beaches and vibrant harbor areas particularly inviting. With an average temperature that bridges the gap between the scorching summer and the more temperate autumn, September offers a sweet spot for travelers keen to enjoy the best of both worlds before cooler days set in. This month not only teeters on the edge of summer's warmth but also ushers in a hint of the crispness to come, creating the perfect backdrop for exploring Piraeus' rich history and stunning waterfront.
In September, Piraeus experiences a notable transition in precipitation patterns, marking the end of summer's dry spell. With 17 mm (0.7 in) of rainfall spread over just 2 days, this month serves as a gentle reminder of the upcoming wetter autumn months. Compared to the nearly rainless August, where only 4 mm (0.2 in) was recorded, September heralds a shift toward increased moisture. This modest uptick in rainfall reflects the city's gradual reawakening from the summer heat, and as temperatures begin to cool, residents may relish the refreshing change. Overall, September represents a balanced blend of lingering summer warmth and the first signs of autumn's embrace.
In September, Piraeus, Greece, experiences a noticeable shift in humidity levels, averaging around 65%. This reflects a trend of decreasing humidity from the peak summer months, with August dipping to its lowest at 63%. Following the heat of summer, September provides a slight reprieve as the humidity begins to rise again in October, reaching 72%. The overall pattern reveals a comfortable transition into the fall season, where humidity levels remain relatively moderate compared to the high percentages recorded at the start of the year, such as 76% in January. This gradual ebb and flow contributes to Piraeus’s inviting climate, balancing warmth and moisture as the seasons change.
As summer transitions into autumn, September in Piraeus, Greece, still boasts a notably high UV Index of 8, categorizing it as very high exposure. While the intense sunlight of July and August lingers, burn time remains a brief 15 minutes, making sun safety crucial as the days begin to shorten. This month marks a slight decrease from the peak summer levels of 10, underscoring a gradual shift in seasonal exposure. For outdoor enthusiasts, it’s essential to remember that although temperatures may feel warmer, the risk remains significant, so ensure proper protection when basking in the Mediterranean sun. For detailed insights and updates, check the Piraeus UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September in Piraeus, Greece offers a delightful continuation of sunshine, boasting 346 hours of golden rays. This month stands out as a lingering echo of the vibrant July and June, which enjoyed peak sunshine with over 409 and 423 hours respectively. Although the sun begins to wane in October, with a drop to 313 hours, September serves as a gentle reminder of summer's warmth, featuring blissful days perfect for enjoying the rich historical tapestry and stunning seascapes of the region. The gradual decline in sunlight from August's 396 hours to September's totals hints at the seasonal shift, yet the bountiful rays invite visitors to revel in the picturesque ambiance before the cooler months set in.
In Piraeus, Greece, the likelihood of sunny weather in September stands impressively at 77%, marking a continuation of the region's summer charm. As the summer peaks in July and August with 94% and 95% sunny days respectively, September transitions into early autumn, still offering a reassuring abundance of sunshine. This month maintains a robust chance of sunny days, outpacing many winter months like November and December, which drop down to 40% and 51%. With such favorable weather, September remains a delightful time for visitors to enjoy the warm Mediterranean climate while the summer sun lingers just a bit longer.
As summer gracefully transitions to autumn in Piraeus, Greece, September offers a balanced 12 hours of daylight—a slight dip from the elongated days of summer. Following the zenith of sunshine in June and July, where the city basks in 14 hours of light, September marks the beginning of a gradual decline, mirroring the earlier months of the year. This change signals the onset of shorter days, reminding residents and visitors alike of the shifting seasons. While daylight decreases, it still provides ample time for exploration and enjoyment of Piraeus' stunning coastal charm before the lighter days give way to the cozy embrace of autumn.
As September arrives in Piraeus, Greece, the average wind speed settles at a gentle 3.0 m/s (7 mph), reflecting a slight recovery from the midsummer lull. Throughout the year, the winds show a notable ebb and flow; they peak during the winter with speeds ascending to 3.5 m/s (8 mph) in December and drop to a calm 1.8 m/s (4 mph) in June. As summer transitions into fall, September's breezes herald a return to milder conditions, contrasting with the spring months that show a consistent decline. Interestingly, the September winds mirror those of February and hold steady with the upcoming October's forecast, suggesting a climate that balances tranquility and vigor as seasons change. This captivating dance of winds provides the perfect backdrop for leisurely strolls along the picturesque waterfront of Piraeus.
The weather in Piraeus changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Piraeus and find detailed weather information for every month.
September and January present stark contrasts in weather conditions. In September, temperatures range from a pleasant minimum of 13°C (55°F) to a scorching maximum of 37°C (98°F), with an average of 24°C (76°F) and relatively low precipitation of 17 mm (0.7 in) over just two days. The humidity sits at a comfortable 65%. In contrast, January experiences much cooler temperatures, with a minimum of -4°C (25°F) and an average of 9°C (48°F), reaching a maximum of 22°C (72°F). This month is wetter, receiving 57 mm (2.2 in) of rain over approximately seven days, along with higher humidity at 76%. For more details, you can check out Piraeus weather in January.
In September, the weather is significantly warmer, with average temperatures around 24°C (76°F) and the potential for highs reaching up to 37°C (98°F). The month sees relatively low precipitation, averaging just 17 mm (0.7 in) over approximately 2 days, accompanied by a moderate humidity level of 65%. In contrast, February presents a much cooler climate, with average temperatures dropping to around 10°C (51°F) and maximums that only reach 20°C (68°F). This month experiences higher precipitation at 48 mm (1.9 in), spread over about 8 days, and a slightly higher humidity level of 75%. For more detailed information on February weather in Piraeus, you can visit Piraeus weather in February.
When comparing the weather between September and March, a clear contrast emerges. September boasts higher temperatures, with an average of 24°C (76°F), peaking at 37°C (98°F), while March is milder, averaging just 12°C (54°F) and reaching a maximum of 23°C (74°F). Additionally, September experiences considerably less precipitation at 17 mm (0.7 in) over only 2 days, whereas March sees more rainfall with 39 mm (1.5 in) across 5 days. Humidity levels are also varying, with September at 65% and March higher at 74%, contributing to a distinctively different feel in the air. For more insights on March weather, you can refer to Piraeus weather in March.
In September, the weather is typically warmer, featuring average temperatures around 24°C (76°F) and maximums that can soar to 37°C (98°F). The month experiences relatively low precipitation, with only 17 mm (0.7 in) and rain on just 2 days, resulting in a humidity level of 65%. In contrast, April offers cooler conditions, with average temperatures peaking at 15°C (60°F) and maximums of 29°C (85°F). This month sees more rainfall, totaling 42 mm (1.6 in) over 5 days, and higher humidity at 75%. For more specific details on April conditions, you can refer to Piraeus weather in April.
September and May offer distinct weather patterns, each with its own charm. In September, temperatures can range from a cool 13°C (55°F) at night to a warm 37°C (98°F) during the day, resulting in an average of 24°C (76°F). The month sees minimal precipitation, with only 17 mm (0.7 in) over just 2 days, and humidity levels sit at around 65%.
In contrast, May presents slightly cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 36°C (97°F), averaging 21°C (70°F). It experiences more rainfall than September, with 23 mm (0.9 in) over 4 days, and higher humidity at 77%. For a closer look at May weather specifics, check out Piraeus weather in May. Overall, while both months can be warm, May tends to have a more humid and wet disposition compared to the drier and hotter September.
In September, the weather is generally warm, with average temperatures around 24°C (76°F) and maximums reaching up to 37°C (98°F), accompanied by low precipitation of just 17 mm (0.7 in) over two days. The humidity sits at a moderate 65%, making for comfortable conditions despite the heat. In contrast, June tends to be slightly warmer, with an average temperature of 25°C (77°F) and maximums peaking at 38°C (101°F). However, June experiences more rainfall, totaling 33 mm (1.3 in) over five days, and a higher humidity level of 71%, which can make the air feel hotter and more muggy. For more detailed information, you can check Piraeus weather in June.
In comparing the weather of September and July, it’s evident that July tends to be hotter overall, with average temperatures reaching 28°C (83°F) and max temperatures soaring to 42°C (108°F). In contrast, September features a more moderate average temperature of 24°C (76°F) and max temperatures that still can reach 37°C (98°F). Both months experience limited precipitation, but July sees slightly more rain at 9 mm compared to September’s 17 mm, although both have only about two rainy days. Humidity levels are fairly similar, with July at 68% and September slightly lower at 65%. For more specifics on July weather, check out Piraeus weather in July.
September's weather shows a notable transition from August, characterized by cooler temperatures and slightly higher humidity. The average temperature in September is 24°C (76°F), with a minimum of 13°C (55°F) and a maximum of 37°C (98°F), compared to August's warmer average of 28°C (83°F) and extremes reaching up to 43°C (109°F). Additionally, September experiences 17 mm (0.7 in) of precipitation over two days, while August remains completely dry with only 4 mm (0.2 in) of rain. This indicates a shift towards more variable weather as summer comes to an end. For a closer look at last month's conditions, visit Piraeus weather in August.
September typically boasts warmer temperatures, with averages reaching around 24°C (76°F) and maximum highs hitting 37°C (98°F). In contrast, October sees a drop in temperatures, averaging 19°C (66°F) and peaking at 31°C (89°F), while minimums fall to 7°C (45°F). While September remains relatively dry with just 17 mm (0.7 in) of precipitation over only 2 days, October experiences increased rainfall, totaling 30 mm (1.2 in) spread over 4 days. Additionally, humidity levels rise slightly in October, hitting 72% compared to 65% in September. For more details, check out Piraeus weather in October.
September and November present a stark contrast in weather. September boasts warmer temperatures, with an average of 24°C (76°F) and highs reaching up to 37°C (98°F), making it the tail end of summer with relatively low precipitation, only 17 mm over 2 days. In contrast, November ushers in cooler conditions, featuring an average temperature of 15°C (59°F) and a maximum of 25°C (78°F). The month sees increased rainfall, totaling 48 mm over 7 days, along with higher humidity levels at 75%. For those interested in specific weather patterns during this time, check out Piraeus weather in November.
In September, the weather is quite warm, with average temperatures around 24°C (76°F) and highs reaching up to 37°C (98°F). The month sees relatively low precipitation, with only 17 mm (0.7 in) over just 2 days, and humidity levels around 65%. In contrast, December brings a significant drop in temperatures, averaging just 11°C (53°F) with highs of 21°C (70°F) and lows dipping to 1°C (34°F). The rainfall increases considerably, totaling 66 mm (2.6 in) over 9 days, and the humidity rises to 76%. For more detailed insights on the weather, you can visit Piraeus weather in December.
As September rolls in, Piraeus experiences a delightful transition from the scorching summer months to a more temperate climate. The average temperature sits comfortably at 24°C (76°F), providing a perfect backdrop for outdoor activities, while the max can still reach up to 37°C (98°F), ensuring those sunny days linger a bit longer. With only two days of rainfall and a modest 17 mm of precipitation, the humidity at 65% feels more pleasant compared to the peak summer levels. For those seeking to understand Piraeus' unique seasonal charm, explore more about the weather patterns in this vibrant coastal city by visiting Piraeus Climate.