Last updated: February 6, 2025
In Castro, Spain, the weather in September presents a striking contrast, with maximum temperatures soaring to 33°C (92°F) while the average temperature rests comfortably at 17°C (63°F). The month sees a noticeable dip in temperatures, with nighttime lows dropping to a brisk 3°C (38°F). Rainfall is moderate, totaling 46 mm (1.8 in) over approximately 9 days, contributing to a relatively high humidity level of 79%. This blend of warm sunshine and occasional rain makes Castro an intriguing destination for those seeking a mix of summer and autumn vibes.
In September, Castro, Spain, experiences a delightful transition from summer to autumn, with temperatures reflecting this shift. The minimum temperature gently dips to 3°C (38°F), providing a refreshing change from the sweltering heat of August. As the month unfolds, the average temperature settles around 17°C (63°F), making it a comfortable time for outdoor activities. With a maximum temperature peaking at 33°C (92°F), warm, sunny days still dominate, encouraging lingering moments outdoors as the vibrant hues of autumn begin to surface. This blend of warmth and a hint of coolness creates an inviting atmosphere, making September a perfect time to explore the charming landscapes of Castro.
In September, Castro, Spain experiences a modest precipitation total of 46 mm (1.8 in), marking a slight increase from the drier summer months. With rainfall occurring on about nine days, the month represents a transition from the warm, arid conditions of July and August, where precipitation plummeted to just 27 mm (1.1 in) and 36 mm (1.4 in), respectively. This gentle uptick in rainfall heralds the arrival of autumn, as the region prepares for the wetter months ahead, including October's notable increase to 96 mm (3.8 in). However, September's precipitation remains significantly lower than the deluge expected in the winter months, where totals rise sharply, showcasing a clear seasonal trend in Castro's climate.
In September, humidity in Castro, Spain, settles at a comfortable 79%, marking a subtle decrease from the warmer summer months. This drop follows a gradual trend visible throughout the season, where August already saw a lower humidity level of 78%, hinting at the onset of autumn. As we transition from the sweltering summer days to the cooler fall evenings, the air becomes a bit crisper, offering a refreshing change. Notably, this month serves as a bridge, leading into a slight uptick again in October, where humidity levels rise to 82%, reflecting the tendency of the fall months to bring slightly more moisture as we approach winter.
As summer winds down, September in Castro, Spain, presents a very high UV Index of 8, suggesting that while the sun’s intensity slightly diminishes compared to the peak summer months, caution is still essential for outdoor enthusiasts. With a burn time of just 15 minutes, visitors and locals alike should take protective measures during midday hours. This trend follows August's UV Index of 9 and reflects a gradual decline from June's extreme levels, yet it remains crucial to remain vigilant as the sun can still pose risks. In the broader context, the UV Index trends show a noticeable peak in the summer months, with values rising consistently from winter's low levels, emphasizing the importance of sun safety as the seasons shift. For more seasonal insights, check out the Castro UV Index.
UV Risk Categories
As summer tapers off in Castro, Spain, September offers a delightful balance of sunshine with 338 hours of warm rays. This month reflects a subtle decline from the peak of July, which boasts an impressive 421 hours. However, the sunshine hours in September still outshine the earlier months of the year, creating a perfect backdrop for outdoor activities, whether it’s exploring the scenic coastline or indulging in local festivals. As autumn approaches, additional light fades with a gradual tapering, but September stands out as a vibrant transition, ensuring that the warmth of summer lingers a little longer in this charming town.
As September arrives in Castro, Spain, the likelihood of sunny weather begins to dip slightly, with a 32% chance of sunshine. This marks a decrease from the warmer months of July and August, which boast higher probabilities of sunny days at 43% and 53%, respectively. Following the vibrant summertime, September transitions into autumn, leading to increasingly variable weather patterns. Despite the lower chances compared to summer, afternoons may still offer glimpses of sun, inviting residents and visitors to savor the lingering warmth before the cooler months settle in. Overall, while September signals a shift in season, it still holds the potential for delightful sunny spells amid the evolving landscape.
As summer fades into autumn, September in Castro, Spain enjoys a pleasant 12 hours of daylight—a perfect balance as the days gradually shorten from the sun-drenched peaks of June and July. Following the vibrant 14 hours of daylight in May and June, September marks a gentle decline, transitioning towards the 10 hours of daylight seen in October. This reduction in daylight reflects the natural rhythm of the seasons, creating a tapestry of light and shadow that enhances the beauty of Castro's landscapes. As the month progresses, the golden hues of late summer are beautifully contrasted against the longer, cooler evenings, inviting both locals and visitors to savor the changing light.
As summer transitions to autumn in Castro, Spain, the September wind brings a gentle average speed of 2.4 m/s (5 mph), continuing the trend of gradually decreasing breezes seen since the peak summer month. This slight dip from August’s 2.3 m/s suggests a serene shift, as the winds enjoy a moment of stillness before the more dynamic later months. Remarkably, the winds in September are notably calmer compared to the brisker months of January and February, which feature average wind speeds of 3.4 m/s (8 mph) and 4.1 m/s (9 mph), respectively. This pattern highlights a calming influence as nature begins to prepare for autumnal change, inviting a more tranquil ambiance to the coastal town.
The weather in Castro 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 Castro and find detailed weather information for every month.
In September, the weather tends to be much warmer, with temperatures ranging from a cool 3°C (38°F) at night to a sizzling 33°C (92°F) during the day, making it a great month for outdoor activities. With an average temperature of 17°C (63°F), this month also experiences moderate humidity at 79% and relatively low precipitation of 46 mm (1.8 in) over about 9 days. In contrast, January brings a much colder climate, where temperatures drop significantly, with a minimum of -5°C (23°F) and a maximum of 19°C (67°F), and an average of 6°C (43°F). This month is also wetter, with 79 mm (3.1 in) of rainfall spread over 10 days and higher humidity at 84%. For those interested in a more detailed overview of January weather, you can visit Castro weather in January.
September and February present contrasting weather patterns, reflecting the transition from summer to winter. 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). The month experiences moderate precipitation of 46 mm (1.8 in) over about 9 days, and the humidity hovers around 79%. In contrast, February is notably cooler, with temperatures dipping to a minimum of -3°C (27°F) and peaking at 21°C (70°F), averaging 8°C (47°F). Precipitation rises significantly to 106 mm (4.2 in) across 12 days, accompanied by a slightly higher humidity level of 83%. For more details on February's weather, check out Castro weather in February.
In September, temperatures in Castro can range from a cool 3°C (38°F) up to a scorching 33°C (92°F), with an average of 17°C (63°F). The month experiences relatively low precipitation, with 46 mm (1.8 in) falling over about 9 days, and humidity sitting at 79%. In contrast, March brings cooler temperatures, with a minimum of -4°C (26°F) and a maximum of 24°C (75°F), averaging just 9°C (48°F). This month is also wetter, with total precipitation reaching 116 mm (4.6 in) across 14 days, and humidity levels slightly higher at 82%. For more information about the weather in March, visit Castro weather in March.
In September, temperatures range from a chilly minimum of 3°C (38°F) to a warm maximum of 33°C (92°F), with an average temperature of 17°C (63°F). The month sees approximately 46 mm (1.8 in) of precipitation over about 9 days and maintains a humidity level of 79%. In contrast, April experiences cooler temperatures, with a minimum of -3°C (26°F), an average of 11°C (52°F), and a maximum of 25°C (77°F). This month has significantly higher precipitation at 82 mm (3.2 in) across 13 days, accompanied by a slightly higher humidity of 83%. For more details on April's weather, you can visit Castro weather in April.
In September, temperatures can range significantly, with a minimum of 3°C (38°F) and a maximum of 33°C (92°F), leading to an average of 17°C (63°F). The month experiences moderate precipitation, totaling 46 mm (1.8 in) over about 9 days, and maintains a humidity level of 79%. In contrast, May tends to be cooler overall, with temperatures varying from a minimum of 1°C (35°F) to a maximum of 30°C (86°F), resulting in an average of 14°C (58°F). May is also wetter, with precipitation reaching 79 mm (3.1 in) across approximately 12 days and slightly higher humidity at 83%. For more details on May weather specifics, you can check Castro weather in May.
In comparing the weather of September and June, both months showcase similar maximum temperatures, reaching up to 33°C (92°F). However, September tends to feature slightly warmer average temperatures, with a minimum of 3°C (38°F) compared to June's 4°C (40°F). September also experiences less precipitation, totaling 46 mm (1.8 in) over 9 days, while June sees higher rainfall at 66 mm (2.6 in) spread across 12 days. Moreover, humidity levels are slightly lower in September at 79%, compared to June's 83%. For more details, check out Castro weather in June.
In comparing the weather of September to that of July, we see some notable differences. September experiences a wider temperature range, with lows dipping to 3°C (38°F) and highs reaching 33°C (92°F), while July maintains a milder temperature range, starting at a minimum of 7°C (45°F) and averaging up to 33°C (91°F). Precipitation is slightly higher in September, with 46 mm (1.8 in) over 9 days, compared to July’s 27 mm (1.1 in) over 7 days, indicating a wetter month as summer begins to transition into fall. Humidity is also slightly lower in July at 82% compared to September’s 79%, suggesting a bit more comfort during the peak summer month. For detailed insights into the weather in July, you can check this link: Castro weather in July.
In comparing the weather of September to that of August, we notice a slight dip in temperatures. September experiences a minimum of 3°C (38°F) and an average temperature of 17°C (63°F), while August has a higher minimum of 8°C (47°F) and an average of 19°C (66°F). In terms of extremes, September reaches a maximum of 33°C (92°F), slightly cooler than August's maximum of 35°C (95°F). Precipitation is also more significant in September, with 46 mm (1.8 in) falling over 9 days compared to August's 36 mm (1.4 in) over 6 days. Humidity levels are similar, with September at 79% and August at 78%. For more details on August's weather, you can visit Castro weather in August.
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). The month sees about 46 mm (1.8 in) of precipitation over 9 days, and humidity levels sit at 79%. In contrast, October brings slightly cooler temperatures, with a minimum of 2°C (35°F) and a maximum of 30°C (87°F), averaging 14°C (57°F). Precipitation significantly increases to 96 mm (3.8 in) over 12 days, accompanied by a slight rise in humidity to 82%. For more detailed insights on October weather, you can check Castro weather in October.
In September, temperatures range from a mild 3°C (38°F) at night to a warm 33°C (92°F) during the day, with an average of 17°C (63°F). The month experiences relatively low precipitation of 46 mm (1.8 in) over about 9 days, and humidity levels sit at 79%. In contrast, November brings significantly cooler weather, with temperatures dipping to a minimum of -1°C (31°F) and averaging 9°C (49°F). The maximum temperature in November reaches only 19°C (67°F), and the month is much wetter, receiving 120 mm (4.7 in) of rainfall across approximately 15 days, accompanied by a slightly higher humidity of 84%. For a detailed look at November's weather patterns, you can visit Castro weather in November.
September and December present contrasting weather patterns, reflecting the transition from late summer to winter. In September, temperatures range from a refreshing 3°C (38°F) at night to a warm 33°C (92°F) during the day, with an average of 17°C (63°F). Although it's relatively humid at 79%, precipitation is moderate, totaling 46 mm (1.8 in) over about nine days.
In stark contrast, December experiences much colder temperatures, dipping as low as -4°C (26°F) overnight, with an average of only 8°C (46°F) and a maximum of 16°C (62°F). The month is significantly wetter, with precipitation reaching 161 mm (6.3 in) over 16 days and humidity rising to 85%. This shift highlights the typical seasonal changes, as seen in the weather patterns in Castro weather in December.
As September arrives, Castro's weather transitions into a remarkable blend of warmth and moisture. With average temperatures hovering around a comfortable 17°C, residents and visitors alike enjoy a delightful respite from the peak summer heat, where maximum daytime highs can reach a sweltering 33°C. However, it's also a month marked by increased humidity and occasional rainfall, with nearly a third of the days experiencing precipitation. This unique combination of factors gives September its own identity, distinct from the preceding summer months and the cooler fall that follows. For a deeper dive into Castro's climate nuances, check out Castro Climate.