September Weather in Portomarin, Spain

Last updated: February 6, 2025

Experience the dynamic September weather in Portomarin, Spain, where temperatures range from a chilly 3°C (38°F) to a warm 33°C (92°F), averaging around 17°C (63°F). This month sees approximately 46 mm (1.8 in) of precipitation spread over 9 days, contributing to a humidity level of 79%. Whether you're enjoying the warm afternoons or braving the cooler nights, Portomarin offers a diverse climate that adds charm and character to your visit.

September Temperature in Portomarin

September in Portomarin brings a delightful transition from the summer heat, with temperatures showcasing a remarkable range. The month begins with min temperatures dipping to a cool 3°C (38°F), while the average settles comfortably at 17°C (63°F), making it an inviting time to explore the charming landscapes. As the days progress, max temperatures can still soar up to 33°C (92°F), reminiscent of August's warmth, ensuring plenty of sunshine for outdoor activities. This gradual shift hints at the approaching autumn, offering a balance of pleasant warmth without the summer's intensity, making September an ideal time for visitors to experience the beauty of Portomarin.

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

The chart illustrates September temperature patterns in Portomarin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434748525761666663564846
Data source: Temperature data for Portomarin generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Portomarin

September in Portomarin, Spain, marks a gentle transition as summer gives way to autumn, showcasing a notable decrease in precipitation compared to the preceding months. With 46 mm (1.8 in) of rain spread over 9 days, this month remains relatively moderate, reflecting a gradual shift from the intense rainfall experienced earlier in the year. For instance, July and August, typically the driest months, fall short with only 27 mm and 36 mm respectively, while precipitation surges again in October. This pattern of diminishing rainfall in September, contrasted with the wetter periods that follow, hints at a seasonal rhythm that residents have come to expect, bringing both respite from summer heat and a gentle reminder of the impending rainy season.

September Precipitation Trends in Portomarin

The chart displays monthly precipitation patterns in Portomarin, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7910711682796627364696120161
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Portomarin

In September, Portomarin, Spain, experiences a slight dip in humidity, averaging around 79%. This marks a continuation of the gradual decline from the high levels observed in the summer months, where humidity peaked at 78% in August. The trend suggests a transition into the autumn season, giving way to drier conditions as the weather cools. Interestingly, the humidity levels in September are still relatively high compared to the months that follow, such as October at 82% and November at 84%, signaling that while summer's moisture begins to wane, the region retains a characteristic dampness typical of its overall climate.

September Average Humidity in Portomarin

This chart illustrates the average monthly humidity levels in Portomarin, 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%83%82%83%83%83%82%78%79%82%84%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Portomarin

In September, Portomarin, Spain experiences a very high UV Index of 8, indicating that sun protection is essential. As summer transitions to autumn, the UV levels remain elevated, with a consistent burn time of just 15 minutes. This trend follows the peak intensity observed in the summer months, such as June's extreme index of 11. Despite a gradual decrease from the summer's highs, September still demands vigilance against sun exposure, particularly for those spending time outdoors. As the weather remains pleasant, taking appropriate precautions is vital for enjoying the beautiful landscapes while safeguarding your skin. For more detailed insights, visit the Portomarin UV Index.

Maximum UV Index Levels in Portomarin for September

The chart shows the monthly maximum UV Index (UVI) for Portomarin 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.
JanFebMarAprMayJunJulAugSepOctNovDec24689111098632
Data source: Portomarin 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 Portomarin

September in Portomarin, Spain, offers a delightful blend of warmth and sunshine, boasting 338 hours of bright daylight. This month stands as a gentle transition into autumn, following the sun-kissed peak of July, where the town basks in 421 hours of light. As summer gently wanes, the comforting rays in September still provide ample opportunities for outdoor adventures against a backdrop of stunning landscapes. Notably, while September's sunshine hours dip from the heights of summer, they remain significantly higher than the winter months, ensuring that this charming locale continues to charm visitors and locals alike with its inviting glow. As the days shorten, the beauty of Portomarin transforms, yet the lingering warmth of the sun makes September a captivating time to explore this picturesque town.

Monthly Sunshine Duration in Portomarin: September Highlighted

The September sunshine duration represents the total number of hours Portomarin 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.
JanFebMarAprMayJunJulAugSepOctNovDec170h230h299h337h390h387h421h392h338h298h228h191h
Data source: Portomarin September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Portomarin During September

In September, Portomarin, Spain, sees a 32% chance of sunny weather, which aligns closely with the tendencies observed from earlier months. Notably, August boasts the highest likelihood of sunshine at 53%, while September experiences a slight dip as summer transitions into autumn. As the year progresses, the chances of sunny days remain relatively stable, with only minor fluctuations. Generally, late spring and summer stand out as the most favorable seasons for sun seekers, making September a transitional month where the return of cloudier days looms. Despite the lower percentage, visitors can still anticipate enjoyable weather, albeit with a greater chance of overcast skies compared to the preceding months.

Percentage of Sunny Days in September in Portomarin

The chart illustrates the percentage of sunny days in Portomarin 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 Portomarin experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%16%50%39%33%42%43%53%33%37%42%32%
Data source: Portomarin September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Portomarin in September

As September unfolds in Portomarin, Spain, daylight begins its steady descent from the sun-kissed heights of summer. With 12 hours of sunshine, this month marks a gentle transition, following the luminous 14 hours of daylight in July and the slightly lesser 13 hours in August. The gradual decrease in daylight reflects the onset of autumn, creating a perfect backdrop for exploring the vibrant landscape while still enjoying ample light. As temperatures start to cool and leaves begin to change, September offers a harmonious balance of daylight, nurturing the spirit of both adventure and reflection before the days shorten further into the depths of fall.

Average Daylight Hours in Portomarin for September

The chart illustrates the variation in daylight duration in Portomarin throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 25m10h 32m11h 57m13h 24m14h 38m15h 15m14h 56m13h 50m12h 26m10h 59m9h 43m9h 4m
Data source: Portomarin daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Portomarin

As September rolls into Portomarin, Spain, the average wind speed mirrors the gentle calm of late summer, tapering to 2.4 m/s (5 mph). This slight dip reflects a trend observed through the months, where the winds gradually decrease from the breezy highs of winter to the softer whispers of late summer. The consistency of low wind speeds in August (2.3 m/s) and September creates a serene atmosphere, perfect for leisurely strolls along the riverbanks or indulging in al fresco dining. As the region transitions into autumn, one can expect a subtle uptick in breeziness come October, echoing the dance of the leaves in a soft embrace of nature’s rhythm.

Average September Wind Speed in Portomarin

The chart displays monthly wind speed patterns in Portomarin, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.44.12.72.53.12.82.62.32.4 m/s2.62.83.4
Data source: Portomarin September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Portomarin Compares to Other Months

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

September and January present contrasting weather patterns, with September typically enjoying milder conditions. In September, temperatures range from a minimum of 3°C (38°F) to a high of 33°C (92°F), averaging around 17°C (63°F), while January sees colder conditions with temperatures dipping as low as -5°C (23°F) and peaking at 19°C (67°F), averaging only 6°C (43°F). September experiences less precipitation, totaling 46 mm (1.8 in) over about 9 days, compared to January's 79 mm (3.1 in) spread over 10 days. Additionally, humidity levels are slightly higher in January at 84%, compared to September's 79%. For more detailed insights into January weather, you can check Portomarin weather in January.

September and February present contrasting weather experiences. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 33°C (92°F), with an average of 17°C (63°F), accompanied by relatively low precipitation of 46 mm (1.8 in) over 9 days. The humidity stands at 79%, making the warm days feel quite pleasant. In contrast, February brings cooler temperatures, with minimums dropping to -3°C (27°F) and maximums reaching only 21°C (70°F), averaging around 8°C (47°F). The month is also wetter, with 106 mm (4.2 in) of rain over 12 days and slightly higher humidity at 83%. For a detailed look at February's climate, visit Portomarin weather in February.

September typically offers warmer weather compared to March, with average temperatures around 17°C (63°F) and highs reaching up to 33°C (92°F). In contrast, March has a cooler average of 9°C (48°F), with maximum temperatures peaking at 24°C (75°F) and some days dipping to as low as -4°C (26°F). While September sees about 46 mm (1.8 in) of precipitation over 9 days, March is noticeably wetter with 116 mm (4.6 in) spread across 14 days. Additionally, humidity levels are fairly similar in both months, averaging 79% in September and 82% in March. For more details on March weather specifically, you can check Portomarin weather in March.

When comparing the weather in September and April, notable differences emerge. September typically enjoys warmer temperatures, with averages reaching around 17°C (63°F) and maximums peaking at 33°C (92°F), while April is cooler, averaging 11°C (52°F) and only reaching a maximum of 25°C (77°F). Precipitation levels also vary; April sees more rain, totaling 82 mm (3.2 in) over 13 days compared to September's 46 mm (1.8 in) across 9 days. Additionally, humidity levels are slightly higher in April at 83%, compared to 79% in September. For detailed insights on April weather, visit Portomarin weather in April.

September and May present distinct weather patterns, with September typically enjoying a wider temperature range. In September, temperatures can vary from a chilly 3°C (38°F) to a warm 33°C (92°F), averaging around 17°C (63°F). This month experiences a total precipitation of 46 mm (1.8 in) across approximately 9 days, with humidity levels at 79%. In contrast, May tends to be cooler, with temperatures ranging from 1°C (35°F) to a maximum of 30°C (86°F) and an average of 14°C (58°F). It sees a higher total precipitation of 79 mm (3.1 in) over about 12 days and slightly elevated humidity at 83%. For more insights into May's weather, visit Portomarin weather in May.

September and June share similar maximum temperatures, both reaching up to 33°C (92°F). However, September tends to have slightly more variable weather, with a wider range of temperatures, from a minimum of 3°C (38°F) to an average of 17°C (63°F). In contrast, June's minimum temperature is only slightly higher at 4°C (40°F) with an average of 16°C (62°F). Additionally, September experiences less precipitation, with 46 mm (1.8 in) over 9 days, compared to June's 66 mm (2.6 in) over 12 days. Humidity is relatively high in both months, but June is slightly more humid at 83% compared to September's 79%. For a closer look at June conditions specifically, visit Portomarin weather in June.

When comparing the weather in September to that of July, several notable differences emerge. September tends to have a wider temperature range, with minimums dropping to 3°C (38°F) and maximums soaring up to 33°C (92°F), while July's temperatures start higher, with minimums of 7°C (45°F) and a slightly lower maximum of 33°C (91°F). Precipitation levels in September are higher at 46 mm (1.8 in) over 9 days compared to July's 27 mm (1.1 in) over 7 days, indicating a wetter month overall. Humidity remains relatively consistent, sitting at 79% in September and slightly higher at 82% in July. For more detailed information, you can visit Portomarin weather in July.

In comparing the weather of September and August, September tends to be cooler, with minimum temperatures dropping to 3°C (38°F) compared to August's 8°C (47°F). The average temperature in September is slightly lower at 17°C (63°F) versus August's 19°C (66°F), although both months can experience high temperatures, with September peaking at 33°C (92°F) and August reaching 35°C (95°F). Precipitation also increases in September, with 46 mm (1.8 in) over 9 days, while August sees slightly less rainfall at 36 mm (1.4 in) over 6 days. Humidity remains relatively stable, with September measuring at 79% and August slightly lower at 78%. For a more detailed look at August weather, you can check Portomarin weather in August.

In September, temperatures ranged from a mild 3°C (38°F) at night to a warm 33°C (92°F) during the day, averaging around 17°C (63°F). The month recorded 46 mm (1.8 in) of precipitation over 9 days, with humidity levels at 79%. In contrast, October brings slightly cooler temperatures, with a minimum of 2°C (35°F), an average of 14°C (57°F), and a maximum of 30°C (87°F). Rainfall increases significantly to 96 mm (3.8 in) across 12 days, accompanied by a slight rise in humidity to 82%. For more detailed insights, check out Portomarin weather in October.

In September, temperatures range from a refreshing minimum of 3°C (38°F) to a warm maximum of 33°C (92°F), with an average of 17°C (63°F). The month typically sees about 46 mm (1.8 in) of precipitation over 9 days, coupled with a humidity level of 79%. In contrast, November experiences a significant drop in temperatures, with a minimum reaching -1°C (31°F) and an average of 9°C (49°F). The maximum temperature is more moderate at 19°C (67°F). Rainfall increases sharply to 120 mm (4.7 in) over 15 days, and humidity rises slightly to 84%. For more detailed insights into what to expect, check Portomarin weather in November.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 33°C (92°F) and an average of 17°C (63°F). This month experiences relatively low precipitation levels of 46 mm (1.8 in) over about 9 days, accompanied by humidity around 79%. In contrast, December brings colder temperatures, with a minimum of -4°C (26°F) and a maximum of 16°C (62°F), averaging 8°C (46°F). Moreover, December sees significantly higher precipitation at 161 mm (6.3 in) spread across 16 days, along with a slight increase in humidity to 85%. For a more detailed look at the December climate, check out Portomarin weather in December.

Compare Portomarin's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Portomarin

As summer fades, September in Portomarin brings a delightful transition marked by a blend of warmer days and cooler nights. The weather offers a comfortable average temperature that contrasts with the scorching highs of July and August, inviting visitors to explore the scenic landscape. However, occasional showers, common this month, add a refreshing touch before autumn settles in. With an increased humidity level, it’s wise to prepare for both sunny afternoons and the potential for rain. For those keen to understand more about the shifting climate, visit Portomarin Climate.