September Weather in Mosteiros, Portugal

Last updated: February 24, 2025

September in Mosteiros, Portugal offers a delightful blend of moderate warmth and refreshing coastal breezes. With maximum temperatures reaching around 24°C (76°F) and a comfortable average of 22°C (72°F), this month is perfect for enjoying outdoor activities. The weather is characterized by a minimum temperature of 19°C (67°F), ensuring pleasant evenings. However, visitors should be prepared for an average precipitation of 55 mm (2.2 in) spread over 10 days, contributing to an 81% humidity level. Overall, September presents a charming script of sun and occasional rain, ideal for exploring the natural beauty of this coastal gem.

September Temperature in Mosteiros

As September unfolds in Mosteiros, Portugal, temperatures begin to showcase the gentle transition into autumn. With minimums around 19°C (67°F) and averages peaking at 22°C (72°F), the month is characterized by comfortably warm days that still carry the warmth of summer. The maximum temperatures can reach 24°C (76°F), creating the perfect setting for outdoor adventures. This pleasant climate makes September an ideal time to explore the natural beauty of the region, as the days are still long and inviting. It's a delightful period where the vibrant summer heat gradually gives way to the cooler embrace of autumn, allowing visitors to enjoy a perfect blend of warmth and fresh breezes.

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

The chart illustrates September temperature patterns in Mosteiros, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec615959606266697272696563
Data source: Temperature data for Mosteiros 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 Mosteiros

September in Mosteiros, Portugal, experiences a moderate shift in precipitation, with an average of 55 mm (2.2 in) spread over 10 days. This marks a slight increase from the drier summer months of July and August, which saw just 17 mm (0.7 in) and 42 mm (1.6 in), respectively. As the region transitions into autumn, the rain begins to prepare the landscape for the much wetter months ahead. The precipitation in September serves as an indicator of the upcoming increase, with October anticipated to bring a significant rise to 100 mm (4.0 in). Thus, September acts as a bridge, gently ushering in the changing weather patterns and hinting at the lush vibrancy that will soon characterize Mosteiros as the year winds down.

September Precipitation Trends in Mosteiros

The chart displays monthly precipitation patterns in Mosteiros, 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.
JanFebMarAprMayJunJulAugSepOctNovDec60885373513517425510093109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mosteiros

In Mosteiros, Portugal, the humidity levels in September settle at a comfortable 81%, reflecting a slight dip from the typically higher numbers observed during the peak summer months of July and August. This month, along with others in the late summer and early autumn, showcases a trend where humidity fluctuates around the 81-83% range. Notably, January and April feature slightly elevated humidity, while October and November signal a gradual decrease, indicating the onset of drier conditions as the year progresses. Overall, September offers a pleasant balance, making it an inviting time for outdoor activities without the oppressive humidity often associated with the height of summer.

September Average Humidity in Mosteiros

This chart illustrates the average monthly humidity levels in Mosteiros, 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.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%82%83%81%82%83%81%81%79%79%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mosteiros

September in Mosteiros, Portugal, sees the UV Index at a striking 9, indicating very high levels of sun exposure and a burn time of just 15 minutes. This month follows a summer of intense sunshine where the UV Index peaked at 11 in June and remained consistently high throughout July and August. As the year transitions into autumn, September still holds onto the summer's intensity, making it essential for sun-seekers to remain vigilant. Those enjoying outdoor activities should prioritize sun protection to mitigate the risk of harmful UV exposure. For detailed updates, visit Mosteiros UV Index.

Maximum UV Index Levels in Mosteiros for September

The chart shows the monthly maximum UV Index (UVI) for Mosteiros 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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: Mosteiros 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 Mosteiros

As summer wanes, September in Mosteiros, Portugal still enjoys a generous 328 hours of sunshine, making it a delightful early fall destination. This month showcases a slight dip from the peak sunlight of July's 384 hours, yet it remains comfortably warm, wrapping visitors in the afterglow of summer. The trend reveals a gradual decrease in daylight as the year progresses; however, September holds on to its sunny charm longer than the cooler months that follow, such as October with 272 hours. This seamless transition into autumn provides an ideal backdrop for savoring the lingering warmth and vibrant landscapes of this picturesque coastal town.

Monthly Sunshine Duration in Mosteiros: September Highlighted

The September sunshine duration represents the total number of hours Mosteiros 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.
JanFebMarAprMayJunJulAugSepOctNovDec150h203h271h300h346h364h384h367h328h272h222h210h
Data source: Mosteiros September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mosteiros During September

In Mosteiros, Portugal, September marks a significant transition in weather, as the likelihood of sunny days reaches 50%, making it one of the more favorable months for sunshine. This improvement follows the sunny peaks of the summer months, particularly August, which boasts a 56% chance of sun. As the year progresses, we can see a clear trend: from the lower percentages in the winter months—like 23% in January—to the summer highs, the overall trend shows increasing sunlight from spring onwards. September's balanced chance of sunny weather offers a delightful opportunity for visitors to enjoy the fading warmth of summer while gazing at the beautiful coastal scenery.

Percentage of Sunny Days in September in Mosteiros

The chart illustrates the percentage of sunny days in Mosteiros 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 Mosteiros experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%26%25%35%38%47%45%56%50%32%32%34%
Data source: Mosteiros September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mosteiros in September

As summer fades in Mosteiros, Portugal, September brings a gentle transition, with daylight lasting approximately 12 hours each day. This month marks a subtle shift from the long, sun-drenched days of July and August, which enjoyed 14 hours of daylight, to the shorter days that characterize the upcoming autumn. The gradual decrease in daylight, starting from 14 hours in mid-summer to 12 hours in early fall, highlights the natural rhythm of the seasons in this picturesque locale. With the days becoming slightly shorter, September offers a perfect opportunity to enjoy the vibrant colors of nature as it prepares for the cooler months ahead, all while still basking in the lingering warmth of summer.

Average Daylight Hours in Mosteiros for September

The chart illustrates the variation in daylight duration in Mosteiros throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 51m10h 47m11h 58m13h 11m14h 13m14h 44m14h 27m13h 33m12h 22m11h 10m10h 6m9h 34m
Data source: Mosteiros daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Mosteiros

As September rolls in, Mosteiros, Portugal experiences a gentle breeze, with average wind speeds steady at 5.9 m/s (13 mph). This tranquility follows the summer months, where wind speeds hovered around similar figures, suggesting a calming transition from the more blustery earlier parts of the year. Interestingly, while January and February exhibit peak speeds near 9.9 m/s (22 mph) and 10.7 m/s (24 mph), the latter half of the year settles into a more consistent rhythm. By October, a slight uptick to 6.3 m/s (14 mph) hints at the winds beginning to pick up again. Overall, September serves as a bridge, offering a serene setting before the cooler months bring back those spirited gales, inviting both relaxation and reflection for locals and visitors alike.

Average September Wind Speed in Mosteiros

The chart displays monthly wind speed patterns in Mosteiros, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9.910.76.17.56.15.46.25.95.9 m/s6.37.98.4
Data source: Mosteiros September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Mosteiros Compares to Other Months

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

In September, the weather is typically warmer, with average temperatures around 22°C (72°F) and a maximum of 24°C (76°F), while January sees cooler temperatures, averaging 16°C (61°F) and peaking at 19°C (66°F). Both months experience relatively high humidity, with September at 81% and January slightly higher at 82%. Precipitation is similar, with September receiving 55 mm over 10 days and January slightly wetter with 60 mm over 11 days. For more detailed January weather information, check out Mosteiros weather in January.

September and February present contrasting weather patterns. In September, temperatures are generally milder, with minimums around 19°C (67°F) and an average of 22°C (72°F), while February sees cooler temperatures, with averages dropping to 15°C (60°F) and minimums of 10°C (51°F). Precipitation is slightly higher in February, totaling 88 mm (3.5 in) over 13 days compared to September's 55 mm (2.2 in) over 10 days. Both months share high humidity levels, with September at 81% and February slightly lower at 80%. For more details on February weather specifics, visit Mosteiros weather in February.

September and March present contrasting yet mild weather conditions. In September, temperatures are generally warmer, with a minimum of 19°C (67°F) and an average of 22°C (72°F), peaking at 24°C (76°F). This month also experiences slightly higher humidity at 81% and receives around 55 mm (2.2 in) of precipitation over approximately 10 days. In contrast, March is cooler, featuring a minimum temperature of 11°C (52°F) and an average of 15°C (60°F), with a maximum of 18°C (65°F). Precipitation levels are similar at 53 mm (2.1 in) over about 11 days, and humidity is marginally higher at 82%. For more details about the weather in March, you can visit Mosteiros weather in March.

When comparing the weather in September and April, we observe distinct differences in temperature and precipitation patterns. September enjoys milder temperatures, with a minimum of 19°C (67°F) and an average of 22°C (72°F), reaching a maximum of 24°C (76°F). In contrast, April is cooler, featuring a minimum temperature of 11°C (53°F) and an average temperature of 16°C (60°F), peaking at 18°C (65°F). Precipitation is also more prevalent in April, with a total of 73 mm (2.9 in) over 13 days, compared to September’s 55 mm (2.2 in) across 10 days. Humidity levels remain fairly similar, with April at 83% and September at 81%. For more detailed information on April weather in Mosteiros, visit Mosteiros weather in April.

In comparing the weather of September and May, September tends to be warmer, with average temperatures reaching 22°C (72°F), while May's averages hover around 17°C (63°F). The maximum temperature in September can reach up to 24°C (76°F), compared to a maximum of 20°C (68°F) in May. Both months experience similar amounts of rainfall, with September receiving 55 mm (2.2 in) and May slightly less at 51 mm (2.0 in), and both months feature about 10 days of precipitation. Notably, humidity levels remain constant at 81% in both months, creating a humid environment throughout. For more detailed information about May weather, you can visit Mosteiros weather in May.

In comparing the weather between September and June, September tends to be warmer, with average temperatures reaching 22°C (72°F) compared to June's average of 19°C (66°F). While both months experience relatively high humidity levels—81% in September and 82% in June—September brings more rainfall, with 55 mm (2.2 in) over about 10 days, contrasting with June's 35 mm (1.4 in) over 7 days. Despite the increase in rain, September's overall warmth makes it a more pleasant month for outdoor activities. For a more detailed look at the weather specifics in June, check out Mosteiros weather in June.

In comparing the weather between September and July, September tends to be slightly warmer, with average temperatures reaching 22°C (72°F) compared to July's average of 21°C (70°F). Both months experience similar low temperatures, but September offers a slightly higher maximum temperature of 24°C (76°F) versus July's 23°C (74°F). However, September is noticeably wetter, with an average precipitation of 55 mm (2.2 in) over 10 days, while July sees significantly less rainfall at 17 mm (0.7 in) across just 5 days. Humidity levels remain comparable, with July at 83% and September at 81%. For more detailed information about July weather, you can check Mosteiros weather in July.

When comparing the weather in September to August, we see a slight decline in minimum temperatures, with September averaging a minimum of 19°C (67°F), compared to August's 20°C (68°F). Both months maintain the same average (22°C or 72°F) and maximum temperatures (24°C or 76°F), which indicates that the overall warmth remains consistent. However, September experiences more rainfall with 55 mm (2.2 in) over 10 days, compared to August’s 42 mm (1.6 in) over 8 days. Despite the increased precipitation in September, humidity levels remain constant at 81% for both months. For more details on the weather patterns in August, visit Mosteiros weather in August.

In September, the weather is generally mild with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 24°C (76°F). With 55 mm (2.2 in) of precipitation over about 10 days, humidity levels are relatively high at 81%. In contrast, October sees a slight drop in minimum temperatures to 16°C (61°F), while the average remains at 21°C (69°F). Precipitation increases significantly to 100 mm (4.0 in) spread over 14 days, leading to a slightly lower humidity level of 79%. For more detailed insights into October weather, check out Mosteiros weather in October.

In September, the weather is generally warmer with average temperatures around 22°C (72°F) and a maximum of 24°C (76°F), while November sees cooler conditions with an average of 18°C (65°F) and a minimum of 12°C (54°F). September experiences less rainfall, totaling 55 mm over approximately 10 days, compared to November's higher precipitation of 93 mm spread over 13 days. Humidity levels are slightly elevated in September at 81%, while November remains comfortable at 79%. For a more detailed look at November weather, check out Mosteiros weather in November.

In comparing the weather between September and December, it is clear that December experiences cooler temperatures, with average highs reaching only 20°C (69°F) compared to September's warmer peak of 24°C (76°F). The minimum temperatures also decline significantly, from 19°C (67°F) in September to 12°C (54°F) in December. Precipitation increases in December, totaling 109 mm (4.3 in) over 13 days, which is a notable rise from September's 55 mm (2.2 in) over 10 days. Additionally, humidity remains relatively high during both months, with December slightly higher at 84% compared to September's 81%. For more detailed information about December conditions, you can visit Mosteiros weather in December.

Compare Mosteiros's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Mosteiros

As September unfolds in Mosteiros, the weather offers a delightful transition from the warmer summer months to the cooler autumn season. With mild temperatures averaging around 22°C, this month experiences a gentler climate, making it a comfortable time for outdoor pursuits. However, September also brings increased humidity and occasional showers, totaling about 55 mm of precipitation across approximately 10 days, a noticeable shift from the drier patterns of summer. This combination fosters a lush landscape, perfect for exploring the region's natural beauty. For a deeper dive into the nuances of the area's weather, check out Mosteiros Climate.