September Weather in Zumaia, Spain

Last updated: February 6, 2025

September in Zumaia, Spain presents a delightful blend of summer warmth and a hint of autumn's arrival. With maximum temperatures reaching up to 30°C (87°F) and an average hover around 18°C (65°F), the month is ideal for outdoor enthusiasts. However, expect some rain, as 98 mm (3.9 in) of precipitation falls over 13 days, contributing to the region's lush landscape. Humidity levels are at 75%, fostering a soft, comfortable atmosphere perfect for exploring the picturesque coastline and charming local culture. Enjoying the striking beauty of Zumaia’s striking cliffs and beaches is a must this September!

September Temperature in Zumaia

In Zumaia, Spain, September heralds the transition from summer to autumn, with temperatures showing a delightful balance. The minimum temperature settles around 9°C (49°F), providing a mild touch to the cooler evenings, while the average reaches a comfortable 18°C (65°F). As the days progress, the maximum temperature can still soar to 30°C (87°F), allowing for lingering moments of warmth reminiscent of summer. This month reflects a significant drop from the sweltering heights of August, yet still offers plenty of sunshine and inviting weather for outdoor activities, making it an ideal time to explore the stunning coastline and rich culture of this Basque gem.

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

The chart illustrates September temperature patterns in Zumaia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec465051545863676865595249
Data source: Temperature data for Zumaia 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 Zumaia

In Zumaia, Spain, September experiences a moderate shift in precipitation, with 98 mm (3.9 in) of rain spread across 13 days. This marks a slight increase compared to the drier summer months of July and August, which recorded 91 mm (3.6 in) and 79 mm (3.1 in), respectively. As the region transitions into autumn, the rainfall begins to pick up again, hinting at the wetter months ahead. Notably, September's levels are still significantly lower than the upcoming peaks in October and November, where precipitation typically escalates, culminating in a robust 211 mm (8.3 in) by December. The overall trend showcases a blend of summer warmth giving way to the lush, rain-soaked scenery characteristic of the Basque Coast.

September Precipitation Trends in Zumaia

The chart displays monthly precipitation patterns in Zumaia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec145129116107115131917999133190211
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Zumaia

In Zumaia, Spain, September marks a notable transition in humidity levels, with an average of 75%. This reduction continues a trend observed throughout the summer months, where humidity peaked at 76% in August. It's a slight decline from the wetter conditions of spring, when humidity averaged around 81% in both April and June. As the year progresses, Zumaia experiences a significant rise again in October, reaching 81%, before humidity climbs even higher in the autumn months. This ebb and flow in humidity not only shapes the coastal landscape but also influences the local atmosphere, making September a pleasantly refreshing time to visit.

September Average Humidity in Zumaia

This chart illustrates the average monthly humidity levels in Zumaia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%83%81%80%81%80%76%75%81%85%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Zumaia

As summer winds down in Zumaia, Spain, September brings a UV Index of 7, categorized as high, with a burn time of 25 minutes. This marks a slight decrease from the peak summer months of June and July, which recorded an intense UV Index of 10. The transition into autumn showcases a trend where sun exposure remains significant, reminding beachgoers and outdoor enthusiasts to stay vigilant about their skin protection. With the UV Index gradually falling to 5 in October, the shift signals a cooler but still sunny season ahead. For a detailed look at daily UV forecasts, check out Zumaia UV Index.

Maximum UV Index Levels in Zumaia for September

The chart shows the monthly maximum UV Index (UVI) for Zumaia 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.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Zumaia 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 Zumaia

As summer fades into autumn, the September sunshine in Zumaia continues to shine brightly, offering an impressive 332 hours of sunlight. This marks a graceful transition from the peak of July’s 401 hours, showing a gentle decline that reflects the changing season. The luminosity of September, while slightly dimmer than the summer months, maintains a robust brightness that invites visitors to bask in the warmth. With each passing month, the hours of sunlight gradually decrease, dipping to 292 hours in October; however, September still holds its ground as one of the sunniest months of the year, ensuring that the stunning coastal scenery is bathed in light, making it an ideal time to explore the natural beauty that Zumaia has to offer.

Monthly Sunshine Duration in Zumaia: September Highlighted

The September sunshine duration represents the total number of hours Zumaia 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.
JanFebMarAprMayJunJulAugSepOctNovDec169h239h307h332h369h378h401h384h332h292h230h218h
Data source: Zumaia September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zumaia During September

In Zumaia, Spain, the likelihood of enjoying sunny weather in September is about 28%, which, while notable, marks a dip compared to the sunnier months of late spring and summer. As the seasons transition from the vibrant warmth of August, with a 38% chance of sun, to the cooler embrace of autumn, this drop reflects the gradual shift in weather patterns. It's interesting to note that while September still offers a decent chance for sunshine, it is less favorable than months like March and October, which boast 43% and 39% chances, respectively. As visitors plan their trips, understanding this trend can help set expectations for a pleasant seaside experience, even if the sun might not shine as consistently as in the peak summer months.

Percentage of Sunny Days in September in Zumaia

The chart illustrates the percentage of sunny days in Zumaia 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 Zumaia experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%21%43%38%30%29%36%38%28%39%17%34%
Data source: Zumaia September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zumaia in September

As summer transitions to autumn in Zumaia, Spain, September brings a gentle shift in daylight hours, offering around 12 hours of daylight. Following the bright, sun-drenched days of June and July, where daylight peaks at 15 hours, the month marks a gradual decrease, echoing the rhythm of the changing seasons. August's light begins to wane, and by September, the daylight is still generous but noticeably shorter, beckoning a return to cozy evenings. This trend of decreasing daylight continues into October, reminding us of the cyclical nature of time and the beauty of seasonal change, as the vibrant hues of autumn start to paint the landscape.

Average Daylight Hours in Zumaia for September

The chart illustrates the variation in daylight duration in Zumaia throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 31m11h 57m13h 25m14h 40m15h 18m14h 58m13h 51m12h 27m10h 59m9h 41m9h 1m
Data source: Zumaia daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Zumaia

In September, Zumaia, Spain, experiences a gentle breeze with an average wind speed of 2.7 m/s (6 mph), mirroring the calming winds of the preceding summer months. This slight uptick from August’s stillness signals a transition towards autumn, where the winds begin to pick up again in the following months. Notably, the trend showcases a gradual increase in wind speeds as the year progresses, peaking in February with 4.7 m/s (10 mph) before gradually settling back down towards the milder conditions of late summer. As the temperature cools, the invigorating September winds offer a refreshing respite, perfectly encapsulating the serene beauty of the changing seasons in this coastal paradise.

Average September Wind Speed in Zumaia

The chart displays monthly wind speed patterns in Zumaia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.14.73.73.43.02.92.72.52.7 m/s3.13.84.8
Data source: Zumaia September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Zumaia Compares to Other Months

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

In comparing the weather of September and January, September tends to be much warmer, with average temperatures ranging from a chilly 9°C (49°F) to a comfortable 30°C (87°F), while January offers much colder conditions, with temperatures dropping to a minimum of -1°C (31°F) and peaking at 19°C (66°F). Precipitation is also more frequent in January, totaling 144 mm (5.7 in) over 15 days, compared to September's 98 mm (3.9 in) over 13 days. Additionally, humidity levels are higher in January at 86%, compared to September's 75%, making for a distinctly different feel between the two months. For more detailed weather information during this time, you can visit Zumaia weather in January.

In September, the weather is generally warmer, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 30°C (87°F). With an average precipitation of 98 mm (3.9 in) over 13 days, humidity levels sit at around 75%. In contrast, February experiences cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 22°C (72°F). The month sees an increase in rainfall, totaling 129 mm (5.1 in) also over 13 days, and slightly higher humidity at 85%. For a closer look at February weather specifics, visit Zumaia weather in February.

September and March present contrasting weather conditions. In September, temperatures range from a mild 9°C (49°F) at night to a warm 30°C (87°F) during the day, making it a pleasant month with an average temperature of 18°C (65°F). However, it also experiences relatively high humidity at 75% and about 98 mm (3.9 in) of precipitation over 13 days.

In contrast, March is significantly cooler, with nighttime lows plummeting to -1°C (31°F) and daytime highs reaching only 22°C (72°F), resulting in an average of 10°C (51°F). Furthermore, March has slightly higher precipitation of 116 mm (4.6 in) spread across 16 days and increased humidity at 82%. For a more detailed look at the weather, you can check Zumaia weather in March.

September and April present distinct weather patterns, reflecting the transition between summer and autumn in September and the onset of spring in April. In September, temperatures range from a milder 9°C (49°F) at night to a warm 30°C (87°F) during the day, with an average temperature of 18°C (65°F). Despite being relatively warm, September sees an average of 13 days of precipitation totaling 98 mm (3.9 in) and a humidity level of 75%.

Conversely, April is cooler, with minimum temperatures dipping to 2°C (36°F) and maximums reaching 24°C (75°F), averaging 12°C (54°F). It experiences slightly more precipitation, averaging 107 mm (4.2 in) over 14 days, alongside a higher humidity of 81%. For those looking to explore specific weather details for this month, check out Zumaia weather in April. Overall, April tends to feel wetter and cooler than the warmer and more variable September, making each month distinct in its own right.

When comparing the weather in September and May, it’s clear that September tends to be warmer overall. September experiences a minimum temperature of 9°C (49°F) and can reach highs of up to 30°C (87°F), with an average temperature of 18°C (65°F). In contrast, May starts cooler with a minimum of 4°C (40°F), an average of 15°C (58°F), and a maximum of 27°C (81°F). Precipitation levels are slightly higher in May at 115 mm (4.5 in) over 16 days, compared to 98 mm (3.9 in) over 13 days in September. Humidity is also a bit higher in May at 80% versus 75% in September, making May feel slightly more humid. For a closer look at the specifics of May weather in this region, check out Zumaia weather in May.

In September, the weather is characterized by a wider temperature range, with minimums dropping to 9°C (49°F) and maximums reaching up to 30°C (87°F), resulting in an average temperature of 18°C (65°F). In contrast, June has a lower average temperature of 17°C (64°F) but can peak at a hotter 33°C (91°F). Additionally, September tends to be slightly wetter, with 98 mm (3.9 in) of precipitation over 13 days, compared to June’s 131 mm (5.1 in) over 15 days. The humidity levels are also a bit higher in June at 81%, compared to September's 75%. For a more detailed look at June weather, check Zumaia weather in June.

When comparing the weather in July and September, July tends to be slightly warmer, with an average temperature of 19°C (67°F) and maximum highs reaching 33°C (92°F). In contrast, September features a broader temperature range, with minimums dropping to 9°C (49°F) yet still allowing for highs of 30°C (87°F) and an average around 18°C (65°F). Both months experience similar levels of precipitation, with July seeing 91 mm (3.6 in) over 14 days and September slightly higher at 98 mm (3.9 in) across 13 days. Humidity levels are also comparable, with July at 80% and September at 75%. For a detailed look at July weather, you can refer to Zumaia weather in July.

In comparing the weather between September and August, we see a notable shift in temperatures and precipitation patterns. September experiences slightly cooler temperatures with a minimum of 9°C (49°F) and a maximum of 30°C (87°F), whereas August boasts warmer averages ranging from 13°C (55°F) to a maximum of 32°C (90°F). Rainfall increases in September, totaling 98 mm (3.9 in) over 13 days, compared to August's lower precipitation of 79 mm (3.1 in) across the same number of days. Humidity levels remain relatively consistent, with September at 75% and August at 76%. For more detailed insights, you can check out Zumaia weather in August.

September and October present a notable shift in weather patterns. September typically enjoys warmer temperatures, with minimums around 9°C (49°F) and maximums reaching up to 30°C (87°F), while the average temperature sits at 18°C (65°F). However, as the calendar turns to October, temperatures dip slightly, with averages falling to 15°C (59°F) and maxima peaking at 27°C (81°F). Precipitation increases in October, rising to 133 mm (5.2 inches) over 14 days compared to September's 98 mm (3.9 inches) across 13 days, coupled with a slight rise in humidity from 75% to 81%. For a closer look at October weather specifics, you can visit Zumaia weather in October.

September and November present contrasting weather patterns. In September, temperatures range from a mild minimum of 9°C (49°F) to a warm maximum of 30°C (87°F), with an average of 18°C (65°F). The month experiences a moderate level of precipitation at 98 mm (3.9 in) over 13 days, alongside a humidity level of 75%. In stark contrast, November sees a significant drop in temperatures, with minimums of 3°C (38°F) and average highs of only 22°C (73°F), averaging around 11°C (53°F). The month is wetter, accumulating 190 mm (7.5 in) of precipitation across 18 days, coupled with increased humidity at 85%. For a more detailed look at the weather conditions, you can refer to Zumaia weather in November.

September and December exhibit quite a contrast in weather. In September, temperatures range from a minimum of 9°C (49°F) to a comfortable maximum of 30°C (87°F), with an average of 18°C (65°F), making it a generally warm month. However, it sees moderate rainfall of 98 mm (3.9 in) across about 13 days, coupled with a humidity level of 75%.

In contrast, December brings a significant drop in temperatures, with a minimum of 0°C (32°F) and a maximum of 18°C (64°F), averaging just 10°C (50°F). This month experiences considerably higher precipitation, totaling 211 mm (8.3 in) over 18 days, along with increased humidity at 87%. For more detailed information, you can check Zumaia weather in December.

Compare Zumaia's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Zumaia

As summer transitions to autumn, September in Zumaia brings a delightful shift in weather. The temperatures are more moderate, providing a comfortable average that contrasts with the peak heat of July and August. While pleasant days invite outdoor exploration, occasional rainfall adds a refreshing touch, leading to a more humid atmosphere. This month tends to be wetter than the dry summer, with several rainy days, making it a unique period for visitors seeking both sunny shores and gentle showers. If you’re curious about the broader climate throughout the year, be sure to explore Zumaia Climate.