Last updated: August 21, 2025
Experience the charm of Sliema, Malta in September, where the weather invites you to bask in its warmth. With maximum temperatures reaching 28°C (83°F) and an average of 25°C (78°F), the days are comfortably warm, perfect for outdoor activities. Expect a cozy atmosphere with minimum temperatures settling around 20°C (69°F) at night. While the month sees about 25 mm (1.0 in) of rainfall over approximately 5 days, the humidity level can reach 77%, lending a slight tropical feel to the air. This balance of warmth and occasional rain ensures September is a delightful time to explore the vibrant coastal town.
As September unfolds in Sliema, Malta, the temperatures exhibit a pleasant transition from the intense summer heat to a more moderate warmth. With minimum temperatures resting at 20°C (69°F) and comfortable averages around 25°C (78°F), the month embraces sun-soaked days perfect for outdoor exploration. The highs, peaking at 28°C (83°F), beckon beachgoers and sunset lovers alike. Compared to the scorching heights of August, September offers a delightful reprieve, making it an ideal time to enjoy the mild Mediterranean climate before autumn sets in. This transitional phase not only enhances the beauty of Sliema’s coastlines but also invites visitors to indulge in a variety of outdoor activities amidst a backdrop of warm, glowing sunsets.
September in Sliema, Malta marks a distinct shift in the weather pattern, as the summer dryness gives way to increased precipitation. The month sees an average rainfall of 25 mm (1.0 in), spread over 5 days, making it the first significant rainfall since late spring. This uptick in moisture is a precursor to the wetter months ahead, as October and November average 111 mm (4.4 in) and 109 mm (4.3 in), respectively. As the sweltering heat of summer recedes, September's rainfall not only provides relief but also signals the transition into autumn, reflecting a noticeable trend towards more substantial precipitation in the following months.
In September, Sliema, Malta experiences a humidity level of 77%, maintaining the trend of elevated moisture that characterizes the late summer months. This figure slightly dips from August's 78%, indicating a gradual transition towards the cooler autumn months. Throughout the year, humidity steadily rises from January's 71% to a peak of 81% in June, before beginning a gentle decline back to 73% by October. September's relatively high humidity reflects the lingering warmth of summer, yet hints at the seasonal shift that brings drier, crisper air in the following months. The overall pattern underscores Sliema's Mediterranean climate, where humidity plays a significant role in shaping its weather character.
As summer transitions into autumn, September in Sliema, Malta welcomes a UV Index of 8, categorizing it as very high and demanding caution for outdoor enthusiasts. This significant drop from the peak levels of July and August, which reached an extreme 11 and a very high 10 respectively, indicates a gradual easing of the sun's intensity. Despite this reduction, the burn time remains a brisk 15 minutes, reminding sun-seekers that UV protection is still crucial during this month. Comparing the trends from earlier months, September continues to highlight the region's notable UV exposure, making it essential to stay vigilant and informed. For more detailed insights, check out the Sliema UV Index.
UV Risk Categories
In Sliema, Malta, September enjoys a splendid 340 hours of sunshine, marking a gentle transition from the peak summer glow of July, which boasts an impressive 413 hours. As summer winds down, the sunny days linger, offering warm rays while the temperatures cool slightly. This month, while still radiant, sees a notable decrease from August’s 392 hours, yet it remains one of the sunniest times of the year. Following the vibrant summer months, September serves as a delightful bridge into the milder autumn, inviting visitors to bask in the pleasant sunshine before the days begin to shorten. Whether you're lounging by the Mediterranean or exploring the scenic coastline, the September sunshine in Sliema is simply irresistible.
In Sliema, Malta, September boasts a 74% chance of sunny weather, a continuation of the summer's warmth, though slightly lower than the peak months of July and August, which enjoy an impressive 98% and 97% respectively. This trend highlights a gradual transition from the sun-soaked heights of summer into the more temperate autumn months, with September offering a delightful compromise. As the summer crowds begin to dwindle, visitors can still relish plenty of sunshine, making it an ideal time to explore the charming coastal town. The likelihood of sunny days remains significantly higher than the dreary winter months that follow, underscoring September's allure for those seeking a bright getaway.
As summer gracefully transitions to autumn, September in Sliema, Malta, witnesses a slight decline in daylight duration, offering about 12 hours of sunlight. This gentle shift follows the peak of summer when daylight reaches a maximum of 14 hours in June through August. The month of September serves as a bridge, where the warmth of summer lingers while daylight begins to retract, paving the way for the earlier sunsets of October. This trend of decreasing daylight continues steadily as the year progresses, hinting at the cozy ambiance of fall and winter that awaits.
As September graces Sliema, Malta, the coastal breeze takes on a gentle character, with an average wind speed of 4.7 m/s (10 mph). This slight uptick from the calm summer months—where winds lingered around 4.1 to 4.2 m/s (9 mph)—marks a transition into the more dynamic autumn season. The winds gradually refresh the coastal air, preparing for the notable increase in speed that October brings, averaging 6.7 m/s (15 mph). September’s serene winds, combined with the lingering warmth of summer, create a perfect backdrop for outdoor activities, inviting both locals and travelers to savor the charm of Sliema's sun-kissed shores before the briskness of winter approaches.
Weather in Sliema varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sliema, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures ranging from a minimum of 20°C (69°F) to a maximum of 28°C (83°F), with an average of 25°C (78°F). With only about 25 mm (1.0 in) of precipitation over five days and a humidity level of 77%, it provides a pleasant atmosphere for outdoor activities. In contrast, January experiences cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 21°C (71°F), averaging around 14°C (58°F). It also tends to be wetter, receiving 41 mm (1.6 in) of rain spread over nine days, although the humidity is slightly lower at 71%. For more detailed information, you can check Sliema weather in January.
September and February present contrasting weather patterns. In September, the temperatures are notably warmer, with a minimum of 20°C (69°F), averaging around 25°C (78°F), and peaking at 28°C (83°F). This month also experiences relatively low precipitation at 25 mm (1.0 in) over five days, alongside a high humidity level of 77%. In contrast, February offers cooler temperatures, with a minimum of 8°C (46°F), an average of 14°C (58°F), and a maximum of 19°C (66°F). Precipitation is higher in February at 45 mm (1.8 in) across six days, while the humidity remains more moderate at 70%. For more detailed information, check out Sliema weather in February.
When comparing the weather in September and March, notable differences emerge in temperature and precipitation. September boasts warmer temperatures, with a minimum of 20°C (69°F) and an average of 25°C (78°F), while March sees temperatures drop to a minimum of 10°C (50°F) and an average of just 15°C (58°F). In terms of rainfall, March experiences slightly higher precipitation at 36 mm (1.4 in) over 6 days compared to September's 25 mm (1.0 in) over 5 days. Additionally, September's humidity is higher at 77%, making it feel more tropical, whereas March maintains a slightly lower humidity level of 73%. For a more detailed look at the March weather, you can visit Sliema weather in March.
September and April present contrasting weather patterns. In September, temperatures are notably warmer, with a minimum of 20°C (69°F) and an average of 25°C (78°F), reaching a maximum of 28°C (83°F). The month experiences a bit more precipitation, totaling 25 mm (1.0 in) over about 5 days, accompanied by a humidity level of 77%. In contrast, April is cooler, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 19°C (67°F), averaging at 16°C (61°F). It also sees less rainfall, with only 9 mm (0.4 in) over about 3 days, and maintains a similar humidity level of 78%. For more information on the weather in this vibrant month, check out Sliema weather in April.
When comparing the weather in September and May, September tends to be warmer and slightly more humid. The average temperature in September is around 25°C (78°F), with a minimum of 20°C (69°F) and a maximum of 28°C (83°F). In contrast, May has cooler temperatures, with an average of 19°C (66°F), a minimum of 15°C (59°F), and a maximum of 23°C (74°F). Precipitation in September is also higher, with about 25 mm (1.0 in) over 5 days, compared to May's mild 6 mm (0.2 in) over just 2 days. However, May experiences slightly higher humidity at 80%, compared to 77% in September. For a closer look at May's weather specifics, check out Sliema weather in May.
When comparing the weather in September and June, September tends to be slightly warmer, with average temperatures reaching 25°C (78°F) and a max of 28°C (83°F), while June has an average temperature of 23°C (73°F) and peaks at 29°C (84°F). Although September's minimum temperature is a bit higher at 20°C (69°F) compared to June's 18°C (64°F), June enjoys a drier climate with only 3 mm (0.1 in) of precipitation over 0 days, whereas September sees more rainfall at 25 mm (1.0 in) across 5 days. Additionally, humidity levels are comparable, with September at 77% and June slightly higher at 81%. For a closer look at June weather in Sliema, you can visit Sliema weather in June.
In July, the weather tends to be slightly warmer, with average temperatures around 26°C (78°F) and a maximum reaching up to 29°C (85°F). Unlike September, July boasts completely dry conditions with no recorded precipitation and maintains a consistent humidity level of 78%. In contrast, September experiences a slight drop in temperatures, with an average of 25°C (78°F) and an increase in humidity to 77%. Additionally, September sees some rainfall, accumulating 25 mm (1.0 in) over about 5 days. Overall, while both months offer warm weather, July is characterized by its dryness, whereas September brings a bit of moisture to the region. For more details, you can check out Sliema weather in July.
September weather sees a slight decrease in temperature compared to August, with minimums around 20°C (69°F) and maximums reaching 28°C (83°F), whereas August boasts higher temperatures, ranging from a minimum of 23°C (74°F) to a maximum of 31°C (88°F). Additionally, September experiences more precipitation, totaling 25 mm (1.0 in) over 5 days, unlike August, which has virtually no rainfall at just 4 mm (0.1 in) over 0 days. Despite the rise in rainfall in September, humidity remains consistent at 77% for both months, maintaining a tropical feel. For a closer look at August weather in Sliema, you can check Sliema weather in August.
In comparing the weather of September and October, we see a notable shift in temperatures and precipitation levels. September boasts a warmer climate with average temperatures around 25°C (78°F), while October cools slightly to an average of 22°C (72°F). However, October experiences a significant increase in rainfall, with 111 mm (4.4 in) of precipitation over 9 days compared to September's 25 mm (1.0 in) over just 5 days. Humidity remains relatively stable, hovering around 77% in September and dropping slightly to 73% in October. For a detailed look at October's weather patterns, check out Sliema weather in October.
September and November present notably different weather patterns. In September, temperatures are warmer, with minimums around 20°C (69°F) and averages peaking at 25°C (78°F), offering a pleasant warmth for outdoor activities. The month experiences relatively low rainfall, with only 25 mm (1.0 in) over approximately five days, accompanied by a higher humidity level of 77%.
In contrast, November sees a significant drop in temperatures, with minimums at 13°C (56°F) and an average around 19°C (67°F), making it much cooler overall. This month also experiences higher precipitation, totaling 109 mm (4.3 in) over about 13 days, and a slightly lower humidity of 71%. For more detailed insights on November weather, you can visit Sliema weather in November.
September's weather is characterized by warm temperatures, with a minimum of 20°C (69°F) and an average of 25°C (78°F), peaking at 28°C (83°F). The month experiences relatively low precipitation, totaling 25 mm (1.0 in) over just 5 days, along with a higher humidity level of 77%. In contrast, December sees a significant drop in temperatures, with a minimum of 10°C (49°F), an average of 16°C (61°F), and a maximum of 20°C (69°F). This month brings increased precipitation, reaching 58 mm (2.3 in) over 9 days, and a slightly lower humidity of 70%. For more detailed information, you can check Sliema weather in December.
As summer gradually transitions into autumn, September in Sliema offers a delightful mix of warmth and refreshing breezes. With average temperatures hovering around 25°C (78°F), it provides a perfect balance between the intense heat of July and August and the cooler months that follow. While brief showers occur on about five days throughout the month, the overall humidity remains comfortably manageable at 77%, making it an ideal time for outdoor adventures and enjoying the scenic seafront. For a deeper dive into how September weather compares to the rest of the year, check out Sliema Climate.