Last updated: February 24, 2025
January in Viana do Castelo, Portugal welcomes visitors with a diverse weather palette, where daytime temperatures can reach a comfortable 20°C (69°F), while nights may dip to a brisk -1°C (31°F). The average temperature hangs around 9°C (49°F), making it essential to pack layers for fluctuating conditions. This month witnesses significant precipitation, with 136 mm (5.4 in) falling over about 10 days, contributing to the region's lush landscapes. High humidity levels at 87% create a cool and refreshing atmosphere, perfect for exploring the coastal charm of this picturesque locale.
In Viana do Castelo during the month of January, temperatures can be quite diverse, showcasing the region's transition from winter to the more temperate climates of late spring. The month kicks off with a minimum of -1°C (31°F), hinting at chilly nights, while days warm up to an average of 9°C (49°F). With maximum temperatures reaching up to 20°C (69°F), sunny afternoons can offer a surprising contrast to the frosty mornings. This blend of cool nights and mild days sets the stage for the gradual warming trend that continues into February and beyond, where temperatures gradually rise and the promise of spring becomes increasingly palpable. As January unfolds, the region's climate hints at the vibrant seasons to come, making it an intriguing time to experience Viana do Castelo.
In January, Viana do Castelo experiences a notable start to the year with precipitation totaling 136 mm (5.4 in) over about 10 days of rain. This marks a significant shift from the drier summer months, as the region transitions into its wet season. Following January, February and March see an increase in rainfall, peaking at 185 mm (7.3 in) and 186 mm (7.3 in) respectively, while the number of rainy days creeps up. As spring approaches, however, precipitation begins to taper off, with April bringing slightly less rain at 169 mm (6.7 in). By May, the rainfall decreases to 106 mm (4.2 in), setting the stage for a dryer summer marked by just 26 mm (1.0 in) in July. The overall trend showcases a clear seasonal pattern, with January marking a significant rainfall period that leads into drier conditions as the year progresses.
In January, Viana do Castelo experiences its peak humidity at an impressive 87%, contributing to a cool and misty ambiance that lingers through the winter months. As the year unfolds, humidity levels begin a gradual decline, dropping to 81% in February and reaching their lowest point of 63% in July. This trend highlights the transition to drier summer conditions that bring a more comfortable climate for outdoor activities. However, just as the summer wraps up, humidity starts to rise again, reaching 86% in November and climbing back to 87% by December, reinforcing the region's distinctive maritime climate. Throughout the year, the fluctuating humidity levels paint a picture of Viana do Castelo's dynamic weather, where each season brings its own unique character and charm.
In January, Viana do Castelo experiences a low UV Index of 2, allowing for a burn time of up to 45 minutes before sun protection is necessary. As the season transitions into February, the UV Index rises to 4, indicating a moderate exposure level and shortening safe sun exposure to 30 minutes. This upward trend continues into March and April, with UV Index values escalating to 6 and 8, respectively, which reflect high and very high exposure categories. By May and through the summer months, the UV Index peaks at 9 or 10, signifying a consistent very high risk with a mere 15 minutes of sun exposure before harmful effects occur. This gradual increase illustrates a clear seasonal trend of rising UV levels as winter yields to warmer months. For a detailed look at UV levels throughout the year, visit Viana do Castelo UV Index.
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In Viana do Castelo, Portugal, the dawn of January greets residents and visitors with 156 hours of sunshine, a gentle promise of warmth that begins to build as the year unfolds. As February arrives, daylight begins to extend, reaching 207 hours, ushering in an anticipation of spring. By March, the sun shines for an impressive 288 hours, energizing the landscape and hinting at the vibrant blooms to come. April continues this upward trend, offering 348 hours of golden light, while May and June see a spectacular peak, with 405 and 406 hours respectively, inviting everyone to bask in the beauty of the coastline. The summer months of July and August radiate with 427 and 395 hours, creating the perfect backdrop for beach outings and picturesque sunsets. As fall sets in, hours of sunshine gently retreat, transitioning to 346 hours in September and dropping to 301 by October. The waning days of the year bring a more subdued light in November and December, recording 207 and 181 hours. This rhythmic ebb and flow of sunlight illustrates Viana do Castelo's captivating seasonal dance, inviting all to experience its charm throughout the year.
In Viana do Castelo, Portugal, January offers a moderate chance of sunny weather at 48%, making it a promising start to the year. This month typically sees more sunshine than February, which plummets to just 18%, but is outshone by the upcoming spring months like March, which boasts a 58% chance of sun. As the seasons progress, the likelihood of sunny days increases significantly, peaking during the summer months of June (60%) and August (66%). Interestingly, while December offers a paltry 33%, November surprises with a healthier 66%, suggesting that late autumn can rival summer for sunny days. Overall, if you're planning a winter escape, January in Viana do Castelo presents a viable option for basking in some winter sun before the weather warms up.
In Viana do Castelo, Portugal, January ushers in a modest 9 hours of daylight, marking the year's start with shorter days. However, as the months progress, an encouraging trend emerges: daylight begins to gradually increase, reaching 10 hours in February and steadily climbing to 11 hours in March. This upward trajectory continues through spring, peaking in June with a remarkable 15 hours of sunlight. As summer transitions into autumn, daylight begins to taper off, with 14 hours in July and gently declining to 12 hours in September. By the time winter returns in December, the daylight duration reverts back to 9 hours, illustrating the distinctive cyclical nature of the seasons in this beautiful coastal region.
In Viana do Castelo, January greets the year with an average wind speed of 4.1 m/s (9 mph), setting a breezy tone that can be felt throughout the month. As we transition into February, the winds pick up slightly to 4.9 m/s (11 mph), marking the month as one of the windiest before they begin a gentle descent. March sees a drop to 3.0 m/s (7 mph), continuing the trend of diminishing gusts leading into the spring months. By April and May, wind speeds stabilize around 2.8 m/s (6 mph) to 3.7 m/s (8 mph), creating a more serene atmosphere as the landscape blossoms. The calmer summer months of June, July, and August follow suit with consistent speeds near the 3.0 m/s mark. Interestingly, as autumn descends, a slight resurgence occurs, with November and December recording 3.4 m/s (8 mph) and 4.1 m/s (9 mph) respectively, perfectly closing the year on a balanced note of fresh, invigorating air. Overall, January's winds in Viana do Castelo herald a transitional season characterized by an ebb and flow of breezy conditions that paint a vivid picture of coastal life.
The weather in Viana do Castelo changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Viana do Castelo and find detailed weather information for every month.
In January, temperatures in Viana do Castelo range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 20°C (69°F), with an average temperature of 9°C (49°F). The month experiences significant precipitation, totaling 136 mm (5.4 in) across about 10 days, along with a higher humidity level of 87%.
In contrast, February brings slightly milder temperatures, with a minimum of 1°C (35°F), an average of 11°C (52°F), and a maximum reaching 21°C (70°F). However, it also sees increased precipitation of 185 mm (7.3 in) over approximately 13 days, while the humidity decreases to 81%. To explore more about February's weather specifics, check out Viana do Castelo weather in February.
In January, Viana do Castelo experiences cooler temperatures with a minimum of -1°C (31°F) and an average of 9°C (49°F), while the maximum reaches 20°C (69°F). The month sees significant precipitation of 136 mm (5.4 in) over about 10 days and maintains a high humidity level of 87%. In contrast, March brings slightly warmer conditions, with minimum temperatures of 2°C (37°F) and an average of 12°C (53°F), peaking at 23°C (73°F). However, March also experiences increased precipitation, totaling 186 mm (7.3 in) over 13 days, and a decrease in humidity to 78%. For more detailed information, check out Viana do Castelo weather in March.
In January, the weather tends to be cooler with average temperatures ranging from a minimum of -1°C (31°F) to a maximum of 20°C (69°F) and higher humidity levels at 87%. The month receives about 136 mm (5.4 in) of precipitation over approximately 10 days. In contrast, April experiences a milder climate, with temperatures varying from a minimum of 3°C (38°F) to a maximum of 26°C (79°F). While April has slightly more rainfall, totaling 169 mm (6.7 in) over about 13 days, the humidity decreases to 79%. For a detailed look at what to expect during this spring month, check out Viana do Castelo weather in April.
In January, Viana do Castelo experiences cooler temperatures, with a minimum of -1°C (31°F) and an average of 9°C (49°F), while the maximum temperature can reach up to 20°C (69°F). The month sees considerable precipitation, totaling 136 mm (5.4 in) over 10 days, along with high humidity levels at 87%. In contrast, May brings a notable warming trend, with minimum temperatures rising to 6°C (43°F) and averages reaching 16°C (61°F), peaking at 29°C (84°F). Rainfall decreases slightly to 106 mm (4.2 in) over 9 days, and humidity drops to a more comfortable 78%. For more details on the weather in Viana do Castelo during this time, visit Viana do Castelo weather in May.
In January, the weather in Viana do Castelo is characterized by cooler temperatures, with a minimum of -1°C (31°F) and an average of 9°C (49°F), reaching a maximum of 20°C (69°F). This month experiences significant precipitation, totaling 136 mm (5.4 in) across about 10 days, contributing to a high humidity level of 87%. In contrast, June brings much warmer weather, with temperatures ranging from a minimum of 9°C (48°F) to an average of 17°C (63°F), and peaking at 28°C (84°F). Additionally, June sees notably less rain, with only 59 mm (2.3 in) of precipitation over 7 days and a lower humidity of 71%. For a more detailed look at what to expect, check out Viana do Castelo weather in June.
January and July in Viana do Castelo present a stark contrast in weather conditions. In January, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 20°C (69°F), with an average of 9°C (49°F). The month sees significant precipitation, with 136 mm (5.4 in) falling over 10 days, resulting in high humidity levels at 87%. In contrast, July enjoys much warmer temperatures, with minimums around 11°C (53°F) and maximums reaching 30°C (87°F), averaging 20°C (67°F). Rainfall is scarce during this month, totaling only 26 mm (1.0 in) over 5 days, and humidity drops to a comfortable 63%. For a detailed look at the July weather, check out Viana do Castelo weather in July.
When comparing January and August weather, stark differences emerge in temperature and precipitation. January experiences a cooler climate, with average temperatures ranging from a minimum of -1°C (31°F) to a pleasant maximum of 20°C (69°F). The month is also characterized by higher humidity at 87% and considerable rainfall, averaging 136 mm (5.4 inches) over about 10 days. In contrast, August presents a warm and dry atmosphere, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 32°C (90°F). The month boasts lower humidity at 64% and significantly less precipitation, totaling only 30 mm (1.2 inches) over just 3 days. For a detailed look at August weather specifically, check out Viana do Castelo weather in August.
January and September present contrasting weather conditions. In January, temperatures are noticeably cooler, with a minimum of -1°C (31°F) and an average of 9°C (49°F), while September enjoys milder temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F). Precipitation levels are higher in January, totaling 136 mm (5.4 in) over 10 days, compared to just 49 mm (1.9 in) across 6 days in September. Furthermore, January's humidity is significantly higher at 87%, while September boasts a more comfortable 71%. For more details on September weather, you can refer to Viana do Castelo weather in September.
January and October present distinct weather patterns. In January, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant average of 9°C (49°F), peaking at 20°C (69°F). The month receives significant precipitation, totaling 136 mm (5.4 in) over about 10 days, with high humidity at 87%. In contrast, October boasts milder temperatures, starting at a minimum of 6°C (43°F) and averaging 16°C (61°F), with maximums reaching 29°C (84°F). This month experiences slightly higher precipitation at 152 mm (6.0 in) spread across 11 days, but the humidity is lower at 79%. For more detailed insights, you can visit Viana do Castelo weather in October.
In comparing the weather of January and November, January tends to be slightly cooler, with average temperatures ranging from a minimum of -1°C (31°F) to a maximum of 20°C (69°F), while November sees milder temperatures, with a minimum of 3°C (38°F) and maximum of 21°C (70°F). Precipitation is more prominent in November, with 216 mm (8.5 in) of rain over 15 days compared to January's 136 mm (5.4 in) over 10 days. Additionally, humidity levels are comparable, with January at 87% and November at 86%. For more detailed insights into the weather during this month, you can check Viana do Castelo weather in November.
In January, the weather in Viana do Castelo shows a slight decrease in temperature compared to December, with average temperatures ranging from a minimum of -1°C (31°F) to a maximum of 20°C (69°F), while December records slightly warmer averages of 2°C (36°F) to 19°C (66°F). Furthermore, January experiences less precipitation, with 136 mm (5.4 in) over 10 days, contrasted with December's 246 mm (9.7 in) spread over 17 days. Despite these changes, both months maintain the same humidity level of 87%. For more details on December's weather, visit Viana do Castelo weather in December.
As January unfolds in Viana do Castelo, it brings a unique blend of chilly air and frequent rain, making it distinctly different from the warmer months. With average temperatures hovering around 9°C (49°F), this month invites a briskness that contrasts sharply with the mildness felt in spring and summer. Precipitation is notably higher, with about ten days dedicated to rainfall, leading to a humidity level of 87% that results in a damp atmosphere—a stark shift from the drier, sunnier weather found in the later months. For those curious about how January fits into the bigger picture of the city's year-round climate, explore more at Viana do Castelo Climate.