Last updated: August 21, 2025
September in Valletta, Malta offers a delightful blend of Mediterranean warmth and refreshing breezes. With a maximum temperature reaching 28°C (83°F) and an average of 25°C (78°F), it's an ideal time for outdoor exploration. Nights cool down to a pleasant 20°C (69°F), providing comfortable evenings. However, travelers should be aware of the potential for light rain, with 25 mm (1.0 in) of precipitation spread over 5 days in the month. The humidity hovers around 77%, adding a touch of tropical allure to this picturesque city. Whether soaking in the sun or strolling through historic streets, September is a vibrant time to experience Valletta's charm.
In September, Valletta welcomes the transition into autumn with delightful temperatures that linger in the warm embrace of summer. With a minimum of 20°C (69°F) and an average of 25°C (78°F), the city remains comfortably warm, making it an ideal time for outdoor exploration. The maximum temperatures reach 28°C (83°F), offering plenty of sunshine for beachgoers and sightseers alike. As the month progresses, the heat gradually softens, hinting at the cooler days to come. This makes September a perfect bridge between the sizzling summer months and the milder fall, allowing visitors to enjoy the vibrant culture of Valletta in pleasant weather.
September in Valletta, Malta marks a notable shift in precipitation patterns as summer transitions into autumn. With an average rainfall of 25 mm (1.0 in) over 5 days, this month records a significant increase in precipitation compared to the preceding dry months of July and August, which saw virtually no rain. As the once-scorching summer temperatures give way to cooler breezes, September's showers serve as a refreshing prelude to the heavier rainfall that October and November bring, both of which surpass the month's totals dramatically. This emerging trend of increased precipitation not only revitalizes the landscape but also signals the onset of Malta's wetter season, making September a pivotal month in the island's climatic calendar.
In September, Valletta's humidity levels settle at a comfortable 77%, mirroring the slightly lower figures of August and early September. As summer wanes, the city transitions from the peak humidity of June and July, which reached 81% and 78%, respectively. Observing the trend throughout the year, humidity gradually increases from a cooler 71% in January to its summer highs, before gently tapering off in the fall. This consistent decline into October, where humidity drops to 73%, suggests a refreshing shift in the atmosphere, making September an appealing month for exploring this historic city by the sea.
As summer gracefully transitions into autumn, September in Valletta, Malta, brings a notable shift in UV exposure. With a UV Index of 8, it falls under the very high category, requiring keen attention to sun safety with a burn time of just 15 minutes. This trend reflects a gradual decline from the extreme levels seen in July (UV Index 11) and August (UV Index 10), yet caution remains essential. The consistent high readings from March through September underscore the importance of protective measures against harmful UV rays during these months. For more detailed insights on UV exposure, check out Valletta UV Index.
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As summer transitions into autumn, September in Valletta, Malta continues to bask in abundant sunlight, offering around 340 hours of radiant light. This marks a slight decline from the peak of 413 hours in July but still provides a delightful glow as the city waves goodbye to the season of long, sun-soaked days. September retains a generous amount of sunshine compared to early months, showcasing the island's lovely climate. With the sun shining brightly, visitors can enjoy picturesque strolls through the historic streets, savoring the lingering warmth before autumn’s cooler embrace sets in. The trend of gradual decrease in sunlight hours from the height of summer to the onset of fall highlights that while summer is cherished, the charm of Malta in September is undeniably enticing.
In Valletta, Malta, the advent of September offers a delightful blend of summer warmth and gentle autumn breezes, with a 74% chance of sunny weather. This marks a slight decline from the peak sunshine days of July and August, which boast impressive rates of 98% and 97% respectively. However, September remains firmly in the sunlight territory, significantly outpacing the cooler months ahead, such as October’s 51% and November’s 49%. As summer transitions into fall, visitors can still expect plenty of those golden rays, making it an ideal time to explore the rich history and stunning landscapes of this beautiful Mediterranean gem.
As summer transitions into autumn, September in Valletta, Malta offers a delightful balance of daylight, with an average of 12 hours of sunlight. This decrease from the summer peak of 14 hours reflects the gradual shift towards shorter days, as the vibrant energy of summer begins to wane. Following August's warm embrace, September maintains a generous amount of daylight, inviting locals and visitors alike to savor the lingering warmth. The trend of extending daylight hours in spring and summer sharply contrasts with the swift reduction felt in the fall months, setting the stage for the cozy, shorter days of October and November.
In September, Valletta experiences a gentle shift in its breezy climate, with average wind speeds reaching 4.7 m/s (10 mph). This moderate wind provides a refreshing transition from the sweltering summer months, where winds were notably light, averaging around 4.1 m/s (9 mph) in July and August. As autumn approaches, this slight uptick in wind speed hints at the changing seasons and accompanies the fading summer heat, setting the stage for more invigorating patterns in the coming months. Notably, the trend shows a gradual increase as October follows, where wind speeds return to a more brisk 6.7 m/s (15 mph), heralding the arrival of fall in this enchanting Mediterranean city.
Weather in Valletta varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Valletta, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is notably warmer, with average temperatures reaching around 25°C (78°F) and maximums hitting 28°C (83°F), accompanied by relatively high humidity levels at 77%. Precipitation during this month is minimal, totaling 25 mm (1.0 in) over about 5 days. In contrast, January brings a significant drop in temperature, with averages falling to 14°C (58°F) and maximums peaking at 21°C (71°F). Rainfall increases to 41 mm (1.6 in) spread over approximately 9 days, while humidity decreases slightly to 71%. This stark difference in temperature and precipitation makes September feel much more summery compared to the cooler, wetter January. For more detailed forecasts, you can check Valletta weather in January.
September and February offer significantly different weather experiences. In September, temperatures are warmer, 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) and relatively high humidity at 77%. This month typically sees about 25 mm (1.0 in) of precipitation over approximately 5 days, making it a more comfortable time for outdoor activities. In contrast, February experiences cooler temperatures, with a minimum of 8°C (46°F) and a maximum of 19°C (66°F), averaging around 14°C (58°F). This month has slightly more precipitation at 45 mm (1.8 in) spread over 6 days and a lower humidity level of 70%. For more detailed insights, you can check the Valletta weather in February.
In September, the weather is typically warmer, with average temperatures around 25°C (78°F) and daily highs reaching up to 28°C (83°F). The humidity levels are relatively high at 77%, and the month experiences about 25 mm (1.0 in) of precipitation over approximately five days. In contrast, March sees cooler temperatures, with averages dropping to 15°C (58°F) and maximums at 20°C (69°F). Although March is less humid at 73%, it tends to have slightly higher precipitation levels, averaging 36 mm (1.4 in) across six days. For more detailed information about the weather during this month, you can check Valletta weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and precipitation. September boasts warmer temperatures, with minimums around 20°C (69°F) and highs reaching up to 28°C (83°F), while April shows cooler averages, with highs of only 19°C (67°F) and lows around 12°C (54°F). Additionally, September features more days of rainfall, totaling about 25 mm (1.0 in) over five days, compared to April's lighter precipitation of 9 mm (0.4 in) over three days. Both months have similar humidity levels, hovering around 77%-78%. For a more detailed look at the climate, check out Valletta weather in April.
In September, temperatures are generally warmer, with a minimum of 20°C (69°F), an average of 25°C (78°F), and a maximum reaching up to 28°C (83°F). This month also sees higher humidity levels at 77% and experiences an average of 25 mm of precipitation over about 5 days. In contrast, May presents milder temperatures, with a minimum of 15°C (59°F), an average of 19°C (66°F), and a maximum of 23°C (74°F). The humidity is slightly higher at 80%, but precipitation is notably less at only 6 mm over 2 days. For more detailed weather information, refer to Valletta weather in May.
In comparing the weather patterns of September and June, it’s evident that both months are pleasantly warm, but they do exhibit some differences. September tends to have slightly higher average temperatures, with lows around 20°C (69°F) and highs reaching up to 28°C (83°F), while June offers a more moderate range from 18°C (64°F) to 29°C (84°F). Interestingly, September also experiences a bit more precipitation, averaging 25 mm (1.0 in) over five days, compared to June's dry spell with only 3 mm (0.1 in) and no rain. Additionally, humidity levels are a touch lower in September at 77%, while June has a higher humidity of 81%. For a more detailed look at the weather in June, you can check out Valletta weather in June.
In comparing the weather of September and July, both months offer warm temperatures, but with some notable differences. September experiences slightly cooler temperatures with a minimum of 20°C (69°F) and a maximum of 28°C (83°F), whereas July boasts a minimum of 21°C (71°F) and a maximum of 29°C (85°F). Additionally, September is characterized by some rainfall, averaging 25 mm over five days, while July remains entirely dry with no precipitation at all. Humidity levels are similar, with September at 77% and July slightly higher at 78%. For more specific insights into July's weather, you can check Valletta weather in July.
September weather shows a gradual cooling trend as temperatures drop slightly, with a minimum of 20°C (69°F), an average of 25°C (78°F), and a maximum of 28°C (83°F). In contrast, August is warmer, featuring higher minimum and maximum temperatures of 23°C (74°F) and 31°C (88°F), respectively, with an overall average of 27°C (81°F). Additionally, September experiences more precipitation, with 25 mm (1.0 in) over 5 days, while August remains predominantly dry, receiving only 4 mm (0.1 in) with no recorded rainy days. Interestingly, both months share the same humidity level of 77%. For more details about August weather, visit Valletta weather in August.
In September, the weather is generally warm with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 28°C (83°F), averaging around 25°C (78°F). This month sees relatively low precipitation at 25 mm (1.0 in) over just 5 days, accompanied by high humidity levels of 77%.
Conversely, October experiences a slight dip in minimum temperatures, dropping to 17°C (63°F), with an average of 22°C (72°F) and a slightly higher maximum of 29°C (85°F). However, it has a notable increase in rainfall, totaling 111 mm (4.4 in) spread over 9 days, while humidity decreases slightly to 73%. For detailed information on weather conditions, check out Valletta weather in October.
September and November exhibit quite distinct weather patterns. In September, temperatures are generally warmer, with a minimum of 20°C (69°F) and an average of 25°C (78°F), while November sees cooler temperatures, with a minimum of 13°C (56°F) and an average of 19°C (67°F). Additionally, September experiences relatively low precipitation at 25 mm (1.0 in) over approximately 5 days, contrasting with November's higher rainfall of 109 mm (4.3 in) spread over 13 days. Despite the increase in precipitation, November’s humidity levels are slightly lower at 71%, compared to September’s 77%. For more detailed information on November weather in Valletta, check out Valletta weather in November.
September and December in Valletta offer a stark contrast in weather conditions. September boasts warmer temperatures, with a minimum of 20°C (69°F) and an average of 25°C (78°F), compared to December, which sees a minimum of 10°C (49°F) and an average of 16°C (61°F). Additionally, September experiences less precipitation, with only 25 mm (1.0 in) over 5 days, while December is notably wetter, accumulating 58 mm (2.3 in) across 9 days. Humidity levels are slightly higher in September at 77%, compared to 70% in December, making the latter feel a bit cooler overall. For more detailed insights, you can refer to Valletta weather in December.
September in Valletta showcases a delightful transition from the sweltering summer heat to the more temperate autumn climate. With average temperatures around 25°C and higher humidity levels, the weather remains pleasantly warm but is complemented by occasional rain, with about five days of precipitation throughout the month. This combination of warmth and moisture creates an inviting atmosphere for visitors, making it a perfect time to explore the city's rich history and vibrant culture. As the crowds of summer wane, September offers a unique charm, making it distinctly different from both the sizzling summer months and the cooler autumn days that follow. For more detailed insights, check out Valletta Climate.