Last updated: August 31, 2025
January in San Germán, Puerto Rico offers a delightful tropical experience, with average temperatures hovering around 25°C (77°F). Visitors can expect warm days, peaking at a comfortable 29°C (84°F), while nighttime brings a refreshing drop to a minimum of 19°C (67°F). Rainfall is limited, with a total of 18 mm (0.7 in) spread over just four days, making it an ideal time for outdoor activities. With a humidity level of 76%, the air remains pleasantly warm and inviting, ensuring a memorable winter escape in this charming Puerto Rican town.
In January, San German, Puerto Rico experiences a delightful tropical climate that invites visitors to bask in its warmth. With minimum temperatures averaging 19°C (67°F), the cool evenings provide a refreshing contrast to the daytime highs, typically reaching 29°C (84°F). This month boasts an average temperature of 25°C (77°F), making it one of the more comfortable times of the year. As the month transitions into February, the temperatures begin to rise slightly, with minimums settling at 21°C (70°F) and maximums warming to 29°C (85°F), while the overall experience remains pleasantly mild. Notably, throughout the following months, temperatures gradually trend upwards, signifying a shift towards the hotter seasons while still maintaining that inviting, tropical allure. The consistent warmth and manageable humidity make January an enticing time to explore the natural beauty and vibrant culture of this charming locale.
In January, San Germán, Puerto Rico experiences a relatively mild start to the year with an average precipitation of 18 mm (0.7 in) over just 4 days. This marks the beginning of a gradual increase in rainfall, with February seeing a slight rise to 26 mm (1.0 in). As the months progress into the spring, precipitation climbs significantly, especially in March and April, both recording 49 mm (1.9 in). The trend continues upward, with May and June bringing even more rain, peaking in July and August when rainfall reaches 86 mm (3.4 in) and 96 mm (3.8 in), respectively. The pattern culminates in September, the wettest month, with a striking 159 mm (6.2 in) spread over 21 days, underscoring the transition to the rainy season. As the year wanes, December provides a noticeable drop to 25 mm (1.0 in), suggesting a refreshing pause before the cycle begins anew. Overall, January serves as a gentle introduction to a wetter season ahead, where each subsequent month progressively increases the moisture levels across this vibrant region.
In January, San German, Puerto Rico experiences a humidity level of 76%, setting a consistent tone for the month. This relatively high humidity persists into February and March, maintaining a steady 75%. As spring approaches, April and May see a slight uptick, returning to 76%, which foreshadows the rising figures of the summer months. By June, humidity climbs to 78%, and peaks in July at 81%, highlighting the island's tropical essence. August and September showcase resilient humidity, averaging around 79%, before gently tapering off in the autumn months. Even as the year draws to a close, humidity lingers in the high 70s, with December sitting at 77%. Overall, the data reveals a warm, humid climate that defines San German's allure throughout the year.
In January, San Germán, Puerto Rico, experiences a very high UV Index of 9, requiring careful sun exposure as the burn time is just 15 minutes. This trend of elevated UV levels continues into February and March, where the Index peaks at an extreme level of 11 and 13, respectively, decreasing the safe sun exposure time to a mere 10 minutes. April through June maintains this extreme status, peaking at 14 in May, a reminder to take necessary precautions. The UV Index stabilizes back to 13 throughout summer and into fall until it gradually declines in November and December, returning to a very high rating of 9 and an 8. As sun-seekers plan their activities for the new year, it’s crucial to stay informed about these trends. For more details, check out the San German UV Index.
UV Risk Categories
In January, San Germán basks in an inviting 262 hours of sunshine, marking the start of the year with a warm welcome. As the months unfold, the sun steadily shines brighter, peaking in May with an impressive 363 hours of radiant light. This upward trend continues into the summer, where July captures 361 hours, wrapping the season in golden rays. However, as fall approaches, sunshine hours gently taper off, with November bringing 299 hours. Even in December, the island enjoys a respectable 320 hours, ensuring a bright close to the year. This seasonal rhythm showcases San Germán's exceptional charm, where sunlight dances across the landscape, inviting residents and visitors to embrace its beauty throughout the year.
When it comes to sunny weather in San Germán, Puerto Rico, January offers a moderate 54% chance of sunshine, setting the stage for a pleasant start to the year. This likelihood is notably lower compared to the subsequent month of February, which boasts a 79% chance of sun. Following February, the sunshine probability dips slightly in March to 68%, before decreasing again in April to 49%. May and September see a slight rebound at 57% and 55%, respectively, while the summer months show a more unpredictable pattern with June experiencing only a 32% chance of sun. Overall, the trend indicates that while January's sun is relatively modest, the subsequent months generally present improved opportunities for basking in warm Puerto Rican sunshine.
In San Germán, Puerto Rico, January brings a delightful 11 hours of daylight, a duration that remains consistent through February. As spring approaches in March, daylight extends to 12 hours, continuing this trend through April and May. The summer months of June and July bask the region in an inviting 13 hours of daylight, perfect for outdoor activities and exploration. However, as summer transitions into fall, daylight begins to taper off, returning to 12 hours in August and September. By October, the daylight duration shifts back to 11 hours, a rhythm that the island maintains through November and December. This cyclical pattern of daylight duration enhances the vibrant experience of life in San Germán throughout the year.
In January, the winds in San Germán, Puerto Rico usher in a refreshing start to the year with an average speed of 3.9 m/s (9 mph), setting a tranquil tone for the month. As the seasons transition, February sees a noticeable increase, with winds picking up to 5.5 m/s (12 mph), marking the most blustery month of the winter. The wind gently tapers off in March, returning to 4.2 m/s (9 mph), before settling back down to 3.9 m/s (9 mph) in April. The spring months bring a slight uptick in wind speed, reaching up to 4.8 m/s (11 mph) by June and peaking in July at 5.1 m/s (12 mph), creating a lively atmosphere. However, as summer wanes into fall, wind speeds gradually decline, falling to 3.1 m/s (7 mph) in September. The trend continues into the final months of the year, where November registers 3.6 m/s (8 mph) and December returns to 4.2 m/s (9 mph), wrapping up the year on a calm note. Overall, January's gentle breezes give way to a vibrant tapestry of wind patterns, showcasing the shifting rhythms of San Germán's climate.
Weather in San German varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in San German, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather in San German features a minimum temperature of 19°C (67°F), with an average of 25°C (77°F) and a maximum of 29°C (84°F). This month experiences about 18 mm (0.7 in) of precipitation spread over 4 days, coupled with a humidity level of 76%. In contrast, February sees a slight increase in temperatures, with a minimum of 21°C (70°F) and the same average of 25°C, while the maximum rises to 29°C (85°F). Precipitation in February reaches 26 mm (1.0 in) over 5 days, and humidity remains similar at 75%. For more details, visit San German weather in February.
In January, the weather is generally warm with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 29°C (84°F), and an average of 25°C (77°F). The month experiences relatively low precipitation at 18 mm (0.7 in) over about 4 days, coupled with a humidity level of 76%. In contrast, March sees slightly warmer temperatures with a minimum of 21°C (69°F) and a maximum of 28°C (83°F), averaging 24°C (76°F). However, it also brings more substantial rainfall, totaling 49 mm (1.9 in) over approximately 11 days, while maintaining a similar humidity level of 75%. For more details, you can check San German weather in March.
In comparing the weather between January and April, both months share similar average and maximum temperatures, with January experiencing a minimum of 19°C (67°F) and April a slightly warmer minimum of 21°C (70°F). However, April sees a notable increase in precipitation, totaling 49 mm (1.9 in) over 14 days, compared to January's 18 mm (0.7 in) over just 4 days. Despite this increase in rain, the humidity remains constant at 76% for both months. For more details about April’s weather in San German, you can visit San German weather in April.
In January, the weather is typically warm, with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 29°C (84°F) and an average of 25°C (77°F). The month sees relatively low precipitation at 18 mm (0.7 in) over just four days, accompanied by a consistent humidity level of 76%. In contrast, May experiences slightly warmer temperatures, with minimums at 23°C (73°F) and maximums reaching 30°C (86°F), along with an average of 26°C (79°F). However, May is considerably wetter, with 59 mm (2.3 in) of rain spread across 12 days, while humidity remains constant at 76%. For a more in-depth look at what to expect, check out San German weather in May.
In January, temperatures in San Germán range from a minimum of 19°C (67°F) to a maximum of 29°C (84°F), with an average temperature of 25°C (77°F). The month experiences relatively low precipitation, totaling only 18 mm (0.7 in) over about four days, and has a humidity level of 76%. In contrast, June showcases warmer weather, with temperatures ranging from a minimum of 23°C (75°F) to a maximum of 31°C (88°F) and an average of 27°C (80°F). However, June is also wetter, with 53 mm (2.1 in) of precipitation occurring over approximately 12 days, accompanied by a slight increase in humidity at 78%. For more detailed information about June weather, check out San German weather in June.
In January, the weather in San German features milder temperatures, with a minimum of 19°C (67°F) and an average of 25°C (77°F), reaching a maximum of 29°C (84°F). The area experiences relatively low rainfall of 18 mm (0.7 in) over just 4 days and a humidity level of 76%. In contrast, July brings warmer temperatures, with a minimum of 24°C (75°F), an average of 27°C (81°F), and a maximum of 31°C (88°F). However, July is considerably wetter, receiving 86 mm (3.4 in) over 16 days, paired with a higher humidity of 81%. For more details on July weather specifics, you can visit San German weather in July.
When comparing the weather in January and August, January typically presents a milder climate with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 29°C (84°F). This month sees relatively low precipitation, totaling 18 mm (0.7 in) over just 4 days, and maintains a humidity level of 76%. In contrast, August tends to be warmer, with minimum temperatures of 23°C (74°F) and maximums reaching up to 32°C (90°F). This month is characterized by significantly higher precipitation, accumulating 96 mm (3.8 in) over 16 days, and a slight increase in humidity at 80%. For more details on August weather, check out San German weather in August.
In January, the weather is generally pleasant with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 29°C (84°F), accompanied by relatively low precipitation of just 18 mm (0.7 in) over about 4 days. The humidity stands at 76%, making it feel warm but comfortable. In stark contrast, September experiences higher temperatures, with a minimum of 24°C (76°F) and a maximum of 32°C (90°F). However, it is also much wetter, with a substantial 159 mm (6.2 in) of rain falling over 21 days, and humidity slightly rising to 79%. This shift in weather highlights the transition from the drier, milder January to the wetter, warmer conditions of September. For more detailed information, visit San German weather in September.
In January, temperatures range from a mild minimum of 19°C (67°F) to a comfortable average of 25°C (77°F), peaking at 29°C (84°F), with relatively low precipitation of 18 mm (0.7 in) spread over just 4 days and a humidity level of 76%. In contrast, October experiences warmer temperatures, with a minimum of 24°C (75°F) and an average of 27°C (80°F), reaching a maximum of 31°C (88°F). However, October is significantly wetter, receiving 102 mm (4.0 in) of rain over 20 days, accompanied by slightly higher humidity at 78%. For more detailed information, check out San German weather in October.
January and November in San German exhibit notable differences in weather patterns. In January, temperatures range from a minimum of 19°C (67°F) to a maximum of 29°C (84°F), with an average of 25°C (77°F). The month experiences relatively low precipitation, totaling 18 mm (0.7 in) over about 4 days, and humidity levels hover around 76%. In contrast, November tends to be warmer, with minimum temperatures of 23°C (73°F) and maximums reaching 31°C (88°F), averaging at 26°C (79°F). However, November also brings significantly more rain, with a total of 91 mm (3.6 in) spread across 15 days, and a slight increase in humidity to 78%. For a more detailed look into San German's weather in November, visit San German weather in November.
When comparing January and December weather, January tends to be slightly cooler with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 29°C (84°F), while December’s temperatures are a bit warmer, with a minimum of 22°C (72°F) and a maximum of 30°C (86°F). In terms of precipitation, January sees less rainfall at 18 mm (0.7 in) over 4 days compared to December, which experiences 25 mm (1.0 in) over 7 days. Humidity levels are quite similar, with January at 76% and December slightly higher at 77%. For more detailed information, check out San German weather in December.
January in San German offers a delightful change from the heat of the summer months. With milder temperatures averaging around 25°C (77°F), it’s the perfect time to enjoy the outdoors without the relentless humidity and heat that characterize other times of the year. The occasional rainfall—averaging just 18 mm over about four days—helps to refresh the landscape, while the 76% humidity provides a gentle reminder of the island's tropical charm. This month is ideal for visitors seeking comfortable weather to explore the rich culture and stunning surroundings. For a deeper understanding of what to expect throughout the year, check out the detailed insights on San German Climate.