September Weather in Mafra, Portugal

Last updated: February 24, 2025

In Mafra, Portugal, the weather in September presents a delightful transition as summer winds down. With a maximum temperature reaching a balmy 31°C (88°F) and a pleasant average of 20°C (68°F), the month invites outdoor activities amidst its warm embrace. Nighttime brings a refreshing dip to around 12°C (54°F), ensuring comfortable evenings. Precipitation is minimal, totaling just 30 mm (1.2 in) over the month, with rain gracing the area on only 3 days. The air carries a mild humidity level of 67%, enhancing the overall atmospheric charm. Whether you're exploring the coastline or enjoying the local culture, September in Mafra is sure to please.

September Temperature in Mafra

As September unfolds in Mafra, Portugal, the temperatures reflect a perfect transition from the sweltering summer to a more temperate fall. With a minimum of 12°C (54°F) and a pleasant average of 20°C (68°F), the days are comfortably warm, making it an ideal time for outdoor exploration. The highs still reach 31°C (88°F), allowing for lingering moments of sunshine before autumn takes hold. This month showcases a delightful blend of summer's warmth and early autumn's crispness, inviting visitors to enjoy the stunning landscapes and cultural richness of this charming region.

September Weather in Mafra: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mafra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525456586365686968645855
Data source: Temperature data for Mafra generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Mafra

September in Mafra, Portugal, marks a transition as summer wanes, bringing an average precipitation of 30 mm (1.2 in) spread over just 3 days. This increase from the parched summer months—where July and August saw minimal rainfall of 6 mm (0.3 in) and 4 mm (0.2 in), respectively—signals the onset of autumn. While precipitation remains moderate compared to the wetter months ahead, the gradual uptick serves as a reminder of the shifting seasons, laying the groundwork for the more substantial rains to come in October and November. The weather in September offers a pleasant balance, with just enough moisture to invigorate the landscape without overwhelming the lingering warmth of summer.

September Precipitation Trends in Mafra

The chart displays monthly precipitation patterns in Mafra, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec4255708242147430538868
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mafra

In Mafra, Portugal, September brings a subtle increase in humidity, rising to 67% after the drier summer months of July and August, which both recorded 60%. This shift marks the transition from the warm, comfortable summer to the more humid conditions of autumn, paving the way for the subsequent months where humidity levels steadily climb. As we move into October, humidity reaches 74%, a noticeable uptick compared to September, and continues to rise through the end of the year, with November and December peaking at 83% and 85%, respectively. This trend highlights a seasonal pattern in Mafra, where summer months enjoy lower humidity, while fall and winter bring an increase in moisture, influencing both the climate and the atmosphere of this charming coastal region.

September Average Humidity in Mafra

This chart illustrates the average monthly humidity levels in Mafra, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mafra

As summer fades into autumn, September in Mafra, Portugal, presents a UV Index of 8, classified as very high. This month's rating indicates a slight decrease from the extreme levels observed in June, yet sun safety remains paramount with a burn time of just 15 minutes. The trend from April's peak at 9 shows a gradual dip, but the risks associated with UV exposure continue, especially for outdoor enthusiasts. With lingering warmth from summer, it's essential to remain vigilant about sun protection. For more detailed insights, explore the comprehensive guide on the Mafra UV Index.

Maximum UV Index Levels in Mafra for September

The chart shows the monthly maximum UV Index (UVI) for Mafra in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Mafra September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Mafra

September in Mafra, Portugal, wraps up the summer season with a delightful 349 hours of sunshine, making it a charming month for outdoor enthusiasts. This is a gradual decline from the sun-drenched peak of 420 hours in July, yet it still offers ample sunshine compared to the earlier months. The bright days of September maintain a warm ambiance before the coolness begins to set in with autumn, contrasting sharply with the dreary 218 hours in December. As the sunshine hours dip, it paves the way for a cozy atmosphere, allowing visitors to savor the beautiful landscapes and rich history that Mafra has to offer before the winter months take hold.

Monthly Sunshine Duration in Mafra: September Highlighted

The September sunshine duration represents the total number of hours Mafra experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec181h228h306h352h408h409h420h395h349h312h232h218h
Data source: Mafra September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mafra During September

In September, Mafra, Portugal, enjoys a 59% chance of sunny weather, maintaining a favorable position among the month’s statistics. This month continues the trend of higher sunshine prevalence seen from June to August, where sun probabilities peak at 69%. After the warmth of summer, September strikes a delightful balance, still offering significant sunshine but also hinting at the approaching autumn. With its enticing potential for clear skies, September remains an appealing choice for visitors looking to bask in the lingering warmth of summer while experiencing the vibrant transition into fall.

Percentage of Sunny Days in September in Mafra

The chart illustrates the percentage of sunny days in Mafra throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Mafra experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%22%59%37%53%61%69%69%59%53%65%37%
Data source: Mafra September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mafra in September

As summer transitions into autumn in Mafra, Portugal, September brings a delightful balance of daylight, offering 12 hours of sunshine each day. This month marks a slight decline from the peak summer months of June and July, which bask in a glorious 14 hours of daylight. The gradual reduction reflects nature's rhythm, as daylight begins to taper off, moving towards the darker months of October and November. Interestingly, September's daylight still outshines the earlier months of the year, maintaining a vibrant atmosphere for outdoor activities and exploration. As the sun dips into the horizon a bit earlier, the charm of early autumn begins to take hold, inviting both locals and visitors to relish the beauty of the changing season.

Average Daylight Hours in Mafra for September

The chart illustrates the variation in daylight duration in Mafra throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 46m10h 44m11h 58m13h 14m14h 18m14h 50m14h 33m13h 36m12h 23m11h 8m10h 2m9h 28m
Data source: Mafra daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Mafra

As summer transitions into autumn, September in Mafra, Portugal, brings a gentle breeze averaging 4.1 m/s (9 mph), marking a noticeable decline from the slightly stronger winds of July and August. This shift reflects a seasonal calm, with the wind speed dipping further as the year unfolds—October follows with even lighter gusts at 3.7 m/s (8 mph). Interestingly, the generally stable wind patterns suggest a reliable yet softening embrace of nature, paving the way for cozy autumnal days. Whether you're strolling through the picturesque streets of Mafra or enjoying the scenic views, September's refreshing air offers a lovely balance, inviting locals and visitors alike to savor the changing season.

Average September Wind Speed in Mafra

The chart displays monthly wind speed patterns in Mafra, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.85.04.13.45.25.25.34.74.1 m/s3.74.44.8
Data source: Mafra September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Mafra Compares to Other Months

The weather in Mafra 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 Mafra and find detailed weather information for every month.

In September, the weather is generally warmer and more pleasant, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 31°C (88°F) and an average of 20°C (68°F). This month sees relatively low precipitation, with only 30 mm (1.2 in) over about 3 days and a humidity level of 67%. In contrast, January experiences cooler temperatures, with a minimum of 2°C (35°F) and a maximum of 19°C (67°F), averaging around 11°C (52°F). It also has higher precipitation at 42 mm (1.6 in) over approximately 6 days and increased humidity at 85%. For a more detailed look at January conditions, check out Mafra weather in January.

September typically features milder weather, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 31°C (88°F), making it warmer on average at 20°C (68°F). The month sees relatively low precipitation, with only about 30 mm (1.2 in) falling over just 3 days, and humidity levels averaging around 67%.

In contrast, February presents cooler conditions, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 22°C (72°F), averaging at 12°C (55°F). This month experiences a higher precipitation level of 55 mm (2.2 in) across 8 days, accompanied by increased humidity at 75%. For more details on February weather, check out Mafra weather in February.

September and March exhibit notable differences in weather patterns. September boasts warmer temperatures, with a minimum of 12°C (54°F) and an average of 20°C (68°F), reaching highs of 31°C (88°F). In contrast, March is cooler, starting at a minimum of 6°C (44°F) and averaging only 13°C (56°F), with a maximum temperature of 24°C (76°F). Additionally, September experiences lower precipitation, totaling 30 mm (1.2 in) over just 3 days, while March sees a marked increase in rainfall, with 70 mm (2.8 in) spread across 9 days. Humidity levels are also slightly higher in March at 72%, compared to 67% in September. For more detailed information, check out Mafra weather in March.

In September, the weather is generally warmer with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 31°C (88°F), making it ideal for outdoor activities. The month sees relatively low rainfall, with only 30 mm (1.2 in) spread over about 3 days, and humidity sits at a comfortable 67%.

In contrast, April experiences cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 24°C (76°F), along with significantly higher precipitation totaling 82 mm (3.2 in) across about 13 days. The humidity is slightly higher at 70%. This makes April a month with more unpredictable weather, perfect for those who enjoy the freshness of spring. For more details, you can check this link: Mafra weather in April.

In September, the weather features a warmer average temperature of 20°C (68°F), with maximums reaching up to 31°C (88°F), making it one of the warmest months of the year. The humidity level sits around 67%, and there is light precipitation averaging 30 mm (1.2 in) spread across three days. In contrast, May sees cooler temperatures, with an average of 17°C (63°F) and a minimum of 9°C (49°F), although the maximum can reach slightly higher at 32°C (89°F). This month experiences more rainfall, totaling 42 mm (1.7 in) over four days, and humidity rises slightly to 70%. For more detailed weather insights, you can check out Mafra weather in May.

In comparing the weather of September and June, we observe that both months start with a minimum temperature of 12°C (54°F), but September enjoys a slightly warmer average temperature of 20°C (68°F) compared to June's 18°C (65°F). While September can occasionally reach a maximum of 31°C (88°F), June peaks at a higher 33°C (93°F). Precipitation is more abundant in September, with 30 mm (1.2 in) falling over 3 days, whereas June receives only 14 mm (0.5 in) over 4 days, indicating that June is relatively drier. Additionally, September has a slightly higher humidity level at 67% compared to June's 63%. For more details, you can check out Mafra weather in June.

In comparing the weather of September and July, we see some distinct differences. September experiences a slightly cooler temperature range, with minimums around 12°C (54°F) compared to July’s minimum of 14°C (58°F), while both months maintain an average of approximately 20°C (68°F). July tends to be a bit hotter at its peak, with maximum temperatures reaching 33°C (91°F), whereas September maxes out at 31°C (88°F). Precipitation also varies; September receives more rain, totaling 30 mm (1.2 in) over three days, in contrast to July's much drier conditions with only 6 mm (0.3 in) on a single day. Humidity levels are slightly higher in September at 67%, compared to 60% in July. For more details on July weather, check Mafra weather in July.

In comparing September and August weather, it is clear that September tends to be milder, with a minimum temperature of 12°C (54°F) compared to August's 15°C (60°F). The average temperature remains constant at around 20°C (68°F) for both months, but August can reach a much higher maximum of 36°C (97°F), while September peaks at 31°C (88°F). Additionally, August experiences significantly less precipitation, with only 4 mm (0.2 in) over one day, compared to September's 30 mm (1.2 in) over three days. The humidity is also slightly higher in September at 67%, as opposed to 60% in August. For more insights into August weather, you can visit this link: Mafra weather in August.

September weather typically features warmer temperatures, with a minimum of 12°C (54°F) and an average of 20°C (68°F) that peaks at 31°C (88°F). In contrast, October sees a slight drop in temperatures, reaching minimums of 9°C (49°F) and averaging 18°C (64°F), with a maximum of 29°C (85°F). While September records only 30 mm (1.2 in) of precipitation over 3 days, October experiences increased rainfall, totaling 53 mm (2.1 in) over 6 days. Additionally, October tends to be more humid, with humidity levels rising to 74%, compared to September's 67%. For more details about October weather, you can visit Mafra weather in October.

September weather is generally warmer, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 31°C (88°F) and an average of 20°C (68°F). It sees relatively low precipitation, totaling 30 mm (1.2 in) over just three days, and humidity levels around 67%. In contrast, November experiences cooler conditions, with temperatures dropping to a minimum of 7°C (46°F) and reaching a maximum of 23°C (73°F), averaging 14°C (58°F). This month is also significantly wetter, receiving 88 mm (3.5 in) of rain over 12 days, accompanied by higher humidity levels at 83%. For more detailed weather information, check out Mafra weather in November.

September weather is typically warmer and more variable, with average temperatures around 20°C (68°F), peaking at a maximum of 31°C (88°F). In contrast, December sees cooler temperatures, averaging 13°C (55°F) with a high of only 18°C (65°F), making it a much chillier month overall. Additionally, September experiences limited precipitation, averaging only 30 mm (1.2 in) over just 3 days, while December is significantly wetter, with 68 mm (2.7 in) of rain over 10 days and higher humidity levels at 85%. For more details, check out the Mafra weather in December.

Compare Mafra's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Mafra

September in Mafra heralds a delightful transition in weather, offering a pleasant blend of warmth and refreshing breezes as summer gives way to autumn. With average temperatures hovering around 20°C, the heat is more manageable compared to the peak summer months, creating an inviting atmosphere for outdoor activities. The reduced precipitation, with only a few rainy days throughout the month, allows for ample sunshine, making it perfect for exploring the picturesque surroundings. While the humidity remains noticeable, it's less oppressive than in the peak summer, enhancing the overall experience. For those looking to plan their visit, a deeper understanding of the monthly variations can be found at Mafra Climate.