Last updated: February 24, 2025
In Guia, Portugal, September heralds a delightful transition into autumn, with temperatures reaching a maximum of 37°C (99°F) and a comfortable average of 23°C (74°F). As the days grow milder, the evenings can dip to a crisp 11°C (52°F). Visitors can expect minimal rainfall, with only 11 mm (0.4 in) of precipitation over just one day, allowing for ample sunshine to enjoy the picturesque landscapes. Humidity levels sit at a moderate 71%, creating a pleasant atmosphere perfect for exploring the charming local culture and surrounding natural beauty.
In September, Guia, Portugal, offers a delightful transition from the sweltering summer heat, with temperatures settling into a more moderate rhythm. The daily minimums hover around 11°C (52°F), while average temperatures reach a pleasant 23°C (74°F), making it perfect for outdoor adventures. As the month progresses, maximum temperatures can still climb to 37°C (99°F), reminiscent of the summer months, but the overall trend indicates a gradual cooling as autumn approaches. This makes September an ideal time to explore the region, with warm days tempered by refreshing evenings, providing a comfortable backdrop for visitors looking to enjoy both the vibrant culture and stunning landscapes of Guia.
In September, Guia, Portugal experiences a notable shift in precipitation patterns, with an average of 11 mm (0.4 in) of rain over just one day. This marks a slight increase from the exceedingly dry summer months of July and August, which recorded minimal rain at 3 mm and 1 mm, respectively. The trend continues into autumn, where precipitation generally increases in the following months; for instance, October sees a spike to 32 mm. This pattern suggests a transition from the parched summer to the more temperate, wetter season, offering a refreshing change that prepares the landscape for the coming months.
In September, Guia, Portugal experiences a humidity level of 71%, marking a slight increase from the drier summer months of June (67%) and July (69%). This seasonal shift reflects a typical transition as the region prepares for autumn, with humidity gradually rising as temperatures begin to cool. Interestingly, September's humidity aligns closely with the levels recorded in March (71%), suggesting a yearly pattern where early fall resembles spring in moisture content. As the year progresses into October, humidity creeps up to 75%, reaffirming the trend of increasing dampness leading into the wetter months ahead. Overall, September serves as a bridge, where summer's serene dryness gently gives way to the lush, revitalizing breezes of autumn.
As summer fades, September in Guia, Portugal, maintains a very high UV Index of 9, requiring careful sun protection as burn time shortens to just 15 minutes. This shift marks a gradual decline from the extreme levels experienced during the peak summer months. Comparatively, May and June hit their highest marks at 10 and 11, respectively, while September's index demonstrates a slight drop but still demands attention to sun safety. With the UV Index decreasing in October, but not dropping below a high level, it's clear that Guia's sun continues to be strong well into the fall. For the best tips on staying safe, explore more at Guia UV Index.
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September in Guia, Portugal, emerges as a vibrant transition month, basking in 351 hours of sunshine—a delightful continuation of summer's warmth. After the peak of 425 hours in July, the sun begins to wane slightly, yet September still holds onto a substantial amount of radiant days, outshining the later fall months like October and November. This trend highlights a stunning late-summer charm, perfect for outdoor adventures and soaking up the last golden rays before autumn settles in. As the month unfolds, Guia's weather invites both locals and travelers to savor the lingering sun while it lasts, making each day a perfect canvas for exploration and enjoyment.
In Guia, Portugal, the likelihood of sunny weather significantly peaks during the summer months, with July and August boasting an impressive 90% and 86% chance of sun, respectively. As the seasons transition into September, the probability remains notably high at 66%, marking a delightful overlap between the summer sun and the onset of autumn. This trend highlights a favorable window for those seeking warm, sunny days as the year begins to cool down, creating a promising atmosphere for outdoor activities and exploration. With an average chance of sunshine throughout the year, September offers a wonderful opportunity for visitors to enjoy the lingering warmth of summer while avoiding the peak crowds.
As summer fades into autumn in Guia, Portugal, September brings a gentle shift in daylight, offering approximately 12 hours of sunshine—a noticeable decrease from the 14 hours enjoyed in the summer months of June through August. This transition signals the gradual retreat of longer days, with daylight beginning to shorten as the year progresses. Following September, daylight continues to diminish, dipping to 11 hours in October and only 9 hours by December. The overall trend reflects the charm of the changing seasons, as both natural light and warm hues give way to the cozy embrace of autumn, inviting residents and visitors alike to savor the beauty of Guia in this enchanting time of year.
As September arrives in Guia, Portugal, the winds start to gently soften compared to the bustling summer months. With an average speed of 3.2 m/s (7 mph), the breezes provide a subtle reminder of the transitioning seasons. This decline reflects a broader trend as the wind speeds gradually taper off from the peak of 4.2 m/s (9 mph) seen in July, creating a sense of calm as summer wanes. The consistent, moderate winds typical of September invite both locals and visitors to enjoy serene afternoons, while also hinting at the cooler months ahead. As the year progresses into autumn, the wind's consistent demeanor at this time sets the stage for peaceful days filled with the beauty of changing leaves and a warm, golden sun.
The weather in Guia 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 Guia and find detailed weather information for every month.
September and January present strikingly different weather conditions. September typically boasts warmer temperatures, with averages around 23°C (74°F) and a maximum reaching up to 37°C (99°F), while January's temperatures are significantly cooler, with an average of 10°C (50°F) and a maximum of 21°C (69°F). In terms of precipitation, January receives more rainfall, averaging 23 mm (0.9 in) over about three days, compared to September's minimal 11 mm (0.4 in) over just one day. Additionally, humidity levels are generally higher in January at 80%, compared to September's 71%. For further insights on weather specifics in January, you can check this link: Guia weather in January.
In September, the weather is generally warm, with average temperatures around 23°C (74°F) and highs reaching as high as 37°C (99°F). The month experiences minimal rainfall, with only about 11 mm (0.4 in) of precipitation spread across just one day, resulting in relatively low humidity levels of 71%. In contrast, February brings cooler temperatures, with an average of 12°C (54°F) and highs of 24°C (76°F). This month sees significantly more rainfall at 46 mm (1.8 in) over five days, while humidity slightly increases to 73%. For more information on the weather in February, you can visit Guia weather in February.
September and March present contrasting weather conditions. September boasts warmer temperatures, with averages around 23°C (74°F) and highs reaching up to 37°C (99°F), while March is cooler, with average temperatures of only 13°C (56°F) and maximums of 27°C (81°F). Precipitation also differs significantly; September has minimal rainfall at just 11 mm (0.4 in) across a single day, whereas March experiences much wetter conditions with 80 mm (3.2 in) over nine days. Both months maintain a consistent humidity level of 71%. For a deeper insight into March weather, you can refer to Guia weather in March.
In comparing the weather of September and April, we see notable differences in temperature and precipitation. September enjoys warmer conditions, with an average temperature of 23°C (74°F) and maximums reaching up to 37°C (99°F). In contrast, April is much cooler, averaging just 15°C (59°F) with highs around 29°C (84°F) and lower minimum temperatures of 6°C (43°F). Additionally, April is significantly wetter, receiving about 70 mm (2.8 in) of rain over 12 days, whereas September experiences only 11 mm (0.4 in) of precipitation across just one rainy day. Despite the higher humidity levels in September at 71%, April's humidity is relatively close at 69%. For more detailed insights into April's weather, check out Guia weather in April.
September tends to be warmer than May, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 37°C (99°F), while May features cooler temperatures that range from 6°C (43°F) to a maximum of 34°C (94°F). Precipitation is less frequent in September, with only 11 mm (0.4 in) recorded over just 1 day, compared to May's 25 mm (1.0 in) spread over 5 days. Humidity levels are slightly higher in September at 71%, while May's humidity sits at around 69%. For more details on the weather in May, you can check this link: Guia weather in May.
In September, the weather offers a warm transition as temperatures range from a minimum of 11°C (52°F) to a maximum of 37°C (99°F), averaging around 23°C (74°F). With only 11 mm (0.4 in) of precipitation over just one day, the humidity sits at a comfortable 71%. In contrast, June starts slightly cooler, with temperatures ranging from 10°C (51°F) to a maximum of 40°C (105°F) and an average of 21°C (71°F). Despite receiving slightly less precipitation at 8 mm (0.3 in) across two days, June's humidity is marginally lower at 67%. For more detailed insights, you can check Guia weather in June.
In comparing the weather of September and July, we observe that September boasts a slightly wider temperature range, with minimums of 11°C (52°F), averages of 23°C (74°F), and maximums reaching up to 37°C (99°F). In contrast, July experiences slightly warmer averages, with minimums at 12°C (55°F) and maximums hitting 40°C (105°F). Precipitation is minimal in both months, with September receiving only 11 mm (0.4 in) over one day, while July experiences even drier conditions with just 3 mm (0.1 in) across the entire month. Humidity levels are comparable, at 71% for September and 69% for July. For more detailed information on July weather, check out Guia weather in July.
September generally offers slightly cooler temperatures compared to August, with minimums dropping from 14°C (57°F) to 11°C (52°F) and average temperatures decreasing from 25°C (77°F) to 23°C (74°F). However, September still sees maximum temperatures reaching up to 37°C (99°F), whereas August can peak remarkably higher at 44°C (111°F). Precipitation remains low in both months, but September experiences a little more rain with 11 mm over one day, compared to August's almost entirely dry weather with just 1 mm. Humidity is fairly consistent, slightly increasing from 68% in August to 71% in September. For more details about the weather in August, you can visit Guia weather in August.
September typically showcases warmer and more varied temperatures, with minimums around 11°C (52°F) and maximums reaching up to 37°C (99°F). The month experiences low precipitation, averaging just 11 mm (0.4 in) over a single day, and a humidity level of 71%. In contrast, October brings a noticeable shift in the weather, with cooler temperatures that dip to a minimum of 6°C (43°F) and an average of 19°C (67°F). Precipitation increases significantly, totaling 32 mm (1.3 in) over four days, and humidity rises slightly to 75%. For a more detailed look at October weather, you can visit Guia weather in October.
September typically showcases warmer temperatures, with an average of 23°C (74°F) and a maximum that can reach as high as 37°C (99°F). The month sees limited precipitation, averaging only 11 mm (0.4 in) and humidity levels around 71%. In contrast, November brings a noticeable drop in temperature, with averages at 14°C (58°F) and a maximum of 24°C (76°F). This month is also characterized by increased rainfall, with an average of 51 mm (2.0 in) over approximately seven days and a slight rise in humidity to 78%. For more details, you can check out Guia weather in November.
September's weather is characterized by warm temperatures, with a minimum of 11°C (52°F) and average highs reaching up to 37°C (99°F), making it feel quite hot, especially during the day. The month sees relatively low precipitation with only 11 mm (0.4 in) across just one day, creating a dry and sunny environment complemented by a humidity level of 71%.
In contrast, December brings cooler temperatures, with a minimum of 0°C (32°F) and an average high of 22°C (71°F). This month is marked by increased precipitation, totaling 44 mm (1.7 in) over five days, contributing to a slightly wetter atmosphere and higher humidity at 81%. For more detailed insights, you can visit Guia weather in December.
As September arrives in Guia, the weather shifts towards a more temperate feel compared to the sweltering heat of summer. While temperatures can peak at a warm 37°C (99°F), the average settles at a comfortable 23°C (74°F), providing a pleasant balance for outdoor activities. With only one day of rainfall adding a mere 11 mm (0.4 in) of precipitation, the month stands out as a relatively dry period. Coupled with moderate humidity levels around 71%, September serves as a perfect transitional month, paving the way for the cooler days ahead. For more details about how the climate evolves throughout the year, check out Guia Climate.