Last updated: January 18, 2025
Leiria, Portugal, exhibits a Mediterranean climate characterized by the Köppen-Geiger classifications Csa and Csb. This region experiences a diverse temperature range, with winter lows dropping to a chilly -4°C (26°F) in January, while the summer months can soar to an intense 42°C (108°F) in August. With an average annual temperature of 16°C (60°F), Leiria’s climate provides a unique interplay of seasonal contrasts, making it an intriguing area for climate studies and outdoor activities.
Leiria, Portugal, showcases distinct seasonal temperature patterns throughout the year. Winter months, notably January and February, are marked by colder temperatures, where minimums can dip as low as -4°C (26°F). As spring approaches, temperatures gradually rise, reaching their peak averages in April and May, where daily highs can soar to around 29°C (85°F) and 35°C (95°F), respectively. The summer months of June, July, and August exhibit the highest temperatures, often exceeding 39°C (102°F), with August recording a maximum of 42°C (108°F). As autumn sets in, temperatures begin to cool again, with September maintaining warmth but gradually transitioning to milder conditions in October and November, finishing the year with chillier days in December where minimal temperatures again flirt with the freezing point. This cyclical pattern offers a blend of both seasonal warmth and coolness, shaping the region's climate identity.
Nazare experiences a temperature range from a chilly 1°C (33°F) in January to a scorching 38°C (101°F) in August, making it notable for its extreme summer heat monthly temperatures in Nazare. In contrast, Peniche has a milder range, with January lows around 7°C (45°F) and highs of 25°C (78°F) in September, offering a more temperate climate monthly temperatures in Peniche. Obidos presents a slightly cooler climate with January temperatures dropping to 3°C (37°F) and summer highs reaching 33°C (92°F) in August monthly temperatures in Obidos.
Leiria, Portugal, experiences a distinctive precipitation pattern throughout the year, predominantly influenced by seasonal changes. The wettest months are typically November and April, with rainfall measuring 103 mm (4.1 in) and 97 mm (3.8 in), respectively, spread over approximately 13 and 12 days. This increased precipitation supports lush vegetation and rejuvenates local water sources. In contrast, the summer months of July and August see significantly reduced rainfall, with only 9 mm (0.4 in) and 7 mm (0.3 in) recorded, often corresponding to just 2 and 1 day of rainfall each month, reflecting the region's dry and warm summer climate.
As autumn sets in, precipitation begins to rise again, peaking in November and followed by a gradual decrease as winter approaches. January and February continue to see higher rainfall, with 52 mm (2.1 in) and 65 mm (2.6 in), respectively. The total annual precipitation thus illustrates a clear seasonal trend, marked by wet winters and springs, punctuated by a distinct dry spell in the summer months. This climate pattern not only shapes the local ecosystem but also influences agricultural practices, as farmers adapt to the varying conditions throughout the year.
Leiria, Portugal, showcases a clear seasonal progression in sunshine duration, with a steady increase from the darker winter months to the bright days of summer. Starting the year with 176 hours of sunshine in January, residents experience a gradual uplift in daylight hours, culminating in vibrant spring months. By May, sunshine peaks to 406 hours, marking the transition into summer when longer days allow for abundant sunlight. The trend continues into July with 418 hours, establishing it as the sunniest month of the year, while August remains impressively sunny with 392 hours, ensuring that the warm season is well illuminated.
As summer gives way to autumn, there is a notable decline in sunshine hours, yet the decrease occurs gradually. September still enjoys 346 hours of sunlight, offering a pleasant start to the autumn season. However, by November, the hours drop significantly to 225 hours, signaling shorter days and overcast conditions typical of late autumn. December rounds out the year with 209 hours, reflecting the lingering effects of winter. This pattern highlights not only the appeal of Leiria’s summer months for outdoor activities but also the need for planning during the shorter, cloudier days of winter.
In Leiria, Portugal, the UV Index displays notable seasonal variations, reflecting changes in sun intensity throughout the year. During the winter months of January and February, the UV Index is relatively low, rated at 3 and 5, which falls into the moderate exposure category. With a burn time of 30 minutes, residents can enjoy outdoor activities with minimal risk if they take basic precautions. However, as the year progresses into late winter and spring, the UV Index begins to rise significantly, peaking at 9 in April, which is classified as very high with a burn time decreasing to just 15 minutes.
The summer months reveal the most intense UV exposure, especially in June, when the Index reaches a peak of 11, categorized as extreme. This sharp increase necessitates caution, as the burn time shortens to just 10 minutes. Even in July and August, the UV Index remains high at ratings of 10 and 9, respectively, emphasizing the importance of sun protection during these months. As autumn approaches, the UV Index gradually declines, but still retains a notable level of risk, particularly in September with a reading of 8. By the time November and December arrive, UV levels drop back to moderate, yet caution should still be exercised, especially for those engaging in outdoor activities during sunny winter days.
UV Risk Categories
In Leiria, Portugal, daylight duration exhibits a clear seasonal rhythm, beginning its gradual increase in winter. In January, the days are short, offering only 9 hours of daylight, which can feel limiting for outdoor activities. As February progresses, an additional hour of daylight emerges, leading to 10 hours, and by March, the duration extends to 11 hours. The arrival of spring marks a significant transition, with daylight reaching 13 hours in April, allowing for longer, brighter evenings that invite outdoor exploration and social gatherings.
The summer months of June and July bring consistency in sunlight, each boasting 14 hours of daylight, making these the longest days of the year. As August wraps up, daylight starts to gradually decline, yet it still maintains an impressive 13 hours. This decreasing trend continues into autumn, with September offering 12 hours, and October bringing 11 hours. Daylight duration shrinks once more in November, falling back to 9 hours, and December mirrors this shortness, completing the cycle. This fluctuation in daylight not only influences daily life but also plays a crucial role in the local climate and ecological rhythms throughout the year.
Alcobaca, Portugal experiences a Mediterranean climate characterized by warm, dry summers and mild, wet winters. Average temperatures range from a minimum of 1°C (33°F) in January to a maximum of 38°C (101°F) in August, with rainfall peaking in March and November. The region enjoys substantial sunshine, particularly in the summer months, with July receiving up to 418 hours of sun. Rainfall decreases significantly during the summer, making it an ideal time for outdoor activities. For more detailed information, visit Alcobaca climate.
Batalha, Portugal experiences a Mediterranean climate with warm summers and mild winters. Temperatures range from a chilly min of -3°C (27°F) in January to a hot max of 37°C (99°F) in August. Precipitation is highest in the spring and autumn months, peaking at 105 mm (4.1 in) in April and 106 mm (4.2 in) in November. The region enjoys ample sunshine, particularly in the summer, with July averaging 414 hours of sunlight. For more details, visit Batalha climate.
Foz do Arelho, Portugal, features a Mediterranean climate characterized by mild winters and warm summers. Average temperatures range from a low of 4°C (40°F) in January to a high of 31°C (87°F) in July and August. Rainfall peaks in November with 91 mm (3.6 in), while the driest months are July and August, receiving only 12 mm (0.5 in) and 7 mm (0.3 in), respectively. The area enjoys ample sunshine, with July offering the most hours at 418. For more detailed information, visit Foz do Arelho climate.
Nazare, Portugal enjoys a Mediterranean climate characterized by mild winters and warm summers. Average temperatures range from a cool 11°C (51°F) in January to a peak of 20°C (68°F) in August, with maximum summer temperatures reaching up to 38°C (101°F). Precipitation varies throughout the year, peaking in November at 97 mm (3.8 in), while July and August are notably dry with just 10 mm (0.4 in) and 7 mm (0.3 in) respectively. Sunshine hours are abundant, especially in July, which boasts around 418 hours of sunlight. For more detailed information, visit Nazare climate.
Situated in Portugal, Obidos enjoys a temperate climate characterized by mild winters and warm summers. January temperatures range from a chilly 3°C to a pleasant 19°C, while July reaches highs of up to 33°C. Precipitation varies throughout the year, peaking in November with 90 mm, and summers are notably dry, especially in July and August. The region basks in abundant sunshine, particularly from May to July, with over 400 hours of sun in June and July. For further details, visit Obidos climate.
Peniche, Portugal experiences a mild maritime climate characterized by relatively warm summers and cool winters. Average temperatures range from 7°C (45°F) in January to a peak of 25°C (78°F) in May and September. Precipitation varies throughout the year, with November being the wettest month at 96 mm (3.8 in), while July and August are the driest with only 10 mm (0.4 in) and 7 mm (0.3 in) respectively. Sunshine is abundant, particularly in the summer months, reaching up to 420 hours in July. For more details, visit Peniche climate.
In conclusion, Leiria, Portugal, presents a captivating interplay of climate, sunlight, and UV exposure throughout the year. With its Mediterranean climate characterized by seasonal temperature variations, residents experience a diverse range of weather conditions. The notable increase in sunshine duration from winter to summer enhances outdoor activities and cultivates a vibrant local culture. However, as UV levels rise significantly during the warmer months, particularly in June and July, it becomes essential for individuals to take precautions against sun exposure. Understanding these seasonal trends not only enriches the lives of those who inhabit this beautiful region but also serves as a reminder of the dynamic relationship between climate and human activities.