Last updated: August 27, 2025
January in Guiuan, Philippines is characterized by a warm tropical climate, where average temperatures hover around 26°C (80°F), with daily highs reaching up to 28°C (83°F) and lows around 24°C (76°F). The month is significantly marked by prevalent rainfall, with a substantial 370 mm (14.6 in) of precipitation spread across approximately 24 days, creating a lush and vibrant landscape. Additionally, the humidity level remains high at an average of 86%, adding to the tropical ambiance. Visitors can expect a mix of warm days accompanied by frequent rain showers, making it essential to stay prepared while enjoying the natural beauty of this coastal region.
In Guiuan, Philippines, January marks the beginning of the year with warm, inviting temperatures. The month typically starts off with a comfortable minimum of 24°C (76°F), contributing to an average of 26°C (80°F), and peaks at a maximum of 28°C (83°F). This consistent warmth sets a pleasant tone as winter fades in other regions. Notably, the temperatures in January are mirrored in February, showcasing a delightful stability before gradually inching up in March. As the months progress towards summer, temperatures begin to rise, reaching higher averages of 28°C (82°F) by May and sustaining similar warmth into the mid-year. This trend reveals Guiuan's tropical charm, with only slight variations, making January a fantastic time to experience its balmy and inviting climate.
January in Guiuan, Philippines, witnesses a significant precipitation total of 370 mm (14.6 in), marking it as the wettest month of the year. This intense rainfall typically spans 24 days, indicating a persistent, drizzly climate that may dampen outdoor activities. The heavy downpour sets the stage for the months to follow, with February and March experiencing notable decreases in both precipitation and rainfall days, dropping to 242 mm (9.5 in) and 175 mm (6.9 in), respectively. As the year progresses, rainfall gradually diminishes until April, before seeing a slight uptick in the coming months. This trend highlights a sharp seasonal transition, illustrating how January's abundant rainfall contributes to the regional climate's dynamic nature and underscores the importance of preparedness in this vibrant coastal community.
In January, the humidity in Guiuan, Philippines reaches a high of 86%, setting the tone for a year marked by generally elevated moisture levels. This month is closely followed by February, which sees a slight dip to 85%, before humidity rises again in March and April, each at 87%. As the year progresses, the humidity starts to fluctuate more noticeably; May brings a decrease to 82%, while June and July maintain a relatively comfortable 79% and 80%. Once August rolls in, humidity stabilizes around 80%, before giving way to a subtle increase as September (83%) and November (82%) show a return to the wetter conditions. By December, the humidity climbs back to 86%, echoing the patterns observed at the year's start. Overall, Guiuan experiences a distinct cycle of humidity, reflecting both the coastal environment and the tropical climate, with peaks at the beginning and end of the year.
In January, the UV Index in Guiuan, Philippines, reaches a striking 12, categorizing it as extreme, with a burn time of just 10 minutes. This trend of high UV exposure is consistent throughout the early months of the year, peaking at 16 in both March and April. Even as the months transition toward the rainy season, the UV Index remains dangerously elevated, stabilizing around 14 until October, before tapering off slightly in November and December. It’s essential for residents and visitors alike to take protective measures against such intense UV radiation. For more details on the UV Index in Guiuan throughout the year, visit Guiuan UV Index.
UV Risk Categories
In January, Guiuan, Philippines, basks in 222 hours of sunshine, marking the beginning of a bright year. As the months progress, the sun shines even more generously, reaching its peak in May with an impressive 326 hours. Following this high, the hours of sunlight begin to taper off slightly, maintaining a solid foundation with 310 hours in March and 309 hours in April. The summer months of June and July still offer plentiful sunshine, featuring 290 and 289 hours respectively. As the year moves into the latter months, a gradual decline is observed, with October and November showcasing 274 and 265 hours of bright days. This consistent warmth and light throughout the first half of the year highlight Guiuan as a sun-soaked destination, perfect for those seeking to escape winter's chill.
In Guiuan, Philippines, the likelihood of sunny weather in January is relatively low at just 16%, making it one of the cloudier months of the year. As the calendar turns to February, the chances of sunshine see a marked improvement, rising to 28%. Following this trend, the likelihood continues to climb steadily through the spring months, peaking at 36% in April. This upward trajectory signifies that as we move deeper into the year, the sun becomes a more frequent visitor, although May experiences a slight dip back to 24%. Afterward, the summer months return to lower probabilities of sun, particularly July and August, which hover around 14% and 15% respectively. Overall, the transition from January to April clearly indicates a gradual increase in sunshine, providing a promising outlook for warmer days ahead.
In Guiuan, Philippines, the daylight duration in January offers a consistent 11 hours of sunlight, a trend that remains unchanged through February. As the seasons shift to March, the days grow longer, providing 12 hours of daylight that persists throughout the warmer months from April to September. This extended daylight fosters a vibrant atmosphere, perfect for outdoor activities and exploration. However, as the year draws to a close, the daylight hours gradually taper back to 11 hours from October to December, marking a sweet yet brief retreat into longer nights as the festive season approaches. This rhythmic pattern of daylight not only highlights the tropical climate but also invites residents and visitors alike to savor the beauty of each day in Guiuan.
In January, Guiuan experiences an average wind speed of 6.8 m/s (15 mph), setting a dynamic tone for the beginning of the year. This brisk breeze is a prelude to a slight increase in February, where winds strengthen to 7.0 m/s (16 mph), hinting at a transition towards the windy months ahead. As the seasons shift, March and April witness a gentle decline in winds, averaging around 6.1 m/s (14 mph) and 6.0 m/s (13 mph), creating a more serene atmosphere. However, as the weather warms up, the winds taper off significantly by May, dropping to 4.8 m/s (11 mph), followed by even lighter breezes in June and August, both at 3.4 m/s (8 mph). The latter half of the year sees a revival, with October and November rekindling wind speeds of 5.1 m/s (11 mph) and 5.3 m/s (12 mph), before December closes the year with a strong gust of 8.3 m/s (19 mph). This pattern reveals a fascinating ebb and flow of the winds, marking January as a month of lively beginnings before settling into a gentler pace, only to regain momentum as the year comes to a close.
Weather in Guiuan varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Guiuan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison, the weather in January and February remains quite similar, with both months experiencing minimum temperatures around 24°C (76°F) and average highs reaching 28°C (83°F). However, January is wetter, receiving 370 mm (14.6 in) of precipitation over 24 days, while February sees a significant decrease in rainfall, totaling 242 mm (9.5 in) across 22 days. Both months maintain high humidity levels, with January at 86% and February slightly lower at 85%. For more detailed information, you can check Guiuan weather in February.
In January, the weather is characterized by warm temperatures, with minimums around 24°C (76°F) and maximizing at 28°C (83°F), alongside significant precipitation totaling 370 mm (14.6 in) over 24 days. The humidity is notably high at 86%, creating a humid atmosphere. In contrast, March sees a slight rise in temperatures, with minimums at 25°C (76°F) and maximums reaching 29°C (84°F). The precipitation drops to 175 mm (6.9 in) over 23 days, and humidity remains similarly high at 87%. While both months are warm and humid, March offers slightly drier conditions than January. For more details about the weather in March, check out Guiuan weather in March.
In January, the weather in Guiuan is warm, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 28°C (83°F), along with high humidity levels at 86%. The month experiences significant rainfall, averaging 370 mm (14.6 in) over 24 days. In contrast, April sees slightly warmer temperatures, with a minimum of 25°C (77°F) and a maximum of 29°C (84°F), and a modest decrease in precipitation to 139 mm (5.5 in) over 21 days, while humidity remains high at 87%. For more detailed weather insights for April, you can visit Guiuan weather in April.
In January, the weather is characterized by slightly cooler temperatures, with averages around 26°C (80°F) and humidity levels at 86%, creating a humid environment. The month experiences considerable rainfall, totaling 370 mm (14.6 in) over 24 days, making it one of the wettest months. In contrast, May sees a slight increase in temperature, with average values rising to 28°C (82°F) and a maximum of 29°C (85°F). Precipitation decreases significantly to 192 mm (7.5 in) over 27 days, and humidity levels drop slightly to 82%. For more detailed information, you can check Guiuan weather in May.
In comparison to January, June typically offers slightly warmer temperatures, with average highs of 30°C (86°F) versus January’s 28°C (83°F). While both months experience high humidity, January's 86% contrasts with June's lower 79%. Additionally, June sees less precipitation overall, with 253 mm (10.0 in) compared to January's 370 mm (14.6 in), despite having a similar number of rainy days—26 in June versus 24 in January. For more detailed information on June weather, you can visit Guiuan weather in June.
In January, the weather is characterized by slightly cooler temperatures, with minimums around 24°C (76°F) and maximums reaching up to 28°C (83°F). This month experiences higher precipitation levels, totaling 370 mm (14.6 in) over 24 days, coupled with a high humidity of 86%. In contrast, July offers warm and more stable conditions, with minimums at 25°C (78°F) and maximums peaking at 30°C (87°F). Precipitation decreases to 255 mm (10.0 in) across 25 days, and humidity remains lower at 80%. For more detailed information on the specific weather patterns in July, you can visit Guiuan weather in July.
In January, the weather tends to be slightly cooler, with minimum temperatures around 24°C (76°F) and an average of 26°C (80°F). The month also sees significant rainfall, with 370 mm (14.6 in) spread over 24 days, accompanied by high humidity levels of 86%. In contrast, August experiences a warmer climate, as minimum temperatures rise to 25°C (76°F) and average temperatures peak at 28°C (83°F). Rainfall during this month is notably lower, totaling 177 mm (7.0 in) across 22 days, with humidity declining to 80%. For a more detailed look at August weather, visit Guiuan weather in August.
In January, the weather is characterized by a mild average temperature of 26°C (80°F), with minimums at 24°C (76°F) and maximums reaching 28°C (83°F). This month also experiences significant rainfall, totaling 370 mm (14.6 in) over 24 days, and a high humidity level of 86%. In contrast, September tends to be slightly warmer, with an average temperature of 28°C (82°F), minimums at 25°C (78°F), and maximums climbing up to 30°C (87°F). Rainfall in September is considerably lower, at 194 mm (7.6 in) across 22 days, accompanied by a slightly reduced humidity of 83%. For more detailed insights on the climatic conditions, you can check Guiuan weather in September.
In comparison to January, October experiences slightly warmer temperatures, with average daily highs reaching up to 30°C (86°F) compared to January's maximum of 28°C (83°F). Both months have high humidity, but January is more humid at 86%, while October's humidity sits at a lower 79%. In terms of precipitation, October sees a reduction with 323 mm (12.7 in) over 27 days of rain, while January receives a heavier 370 mm (14.6 in) across 24 days. For more detailed insights on October weather, you can visit Guiuan weather in October.
In January, the weather tends to be slightly cooler, with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 28°C (83°F), accompanied by high humidity levels at 86%. This month experiences significant rainfall, with about 370 mm (14.6 inches) spread across 24 days. In contrast, November sees a marginally warmer average temperature, peaking at 30°C (85°F) and maintaining a lower humidity of 82%. Although November is slightly drier with 349 mm (13.8 inches) of precipitation over 28 days, it still features frequent rain. For more detailed insights into the weather conditions of November, please check Guiuan weather in November.
In comparing the weather of January and December, both months exhibit similar warm temperatures, with January averaging around 26°C (80°F) and December slightly warmer at 27°C (81°F). January experiences a minimum temperature of 24°C (76°F) and a maximum of 28°C (83°F), while December sees similar low and high temperatures of 24°C (76°F) and 29°C (84°F) respectively. However, December is notably wetter, receiving 523 mm (20.6 in) of precipitation over 29 days, compared to January’s 370 mm (14.6 in) over 24 days. Humidity levels remain constant at 86% for both months, contributing to the tropical feel. For more details on December weather, you can check Guiuan weather in December.
In January, Guiuan experiences a unique blend of mild temperatures and high humidity, marking a transition from the typically hotter months. With averages around 26°C (80°F) and frequent rainfall, this month stands out due to its higher precipitation, occurring on nearly 24 days. This results in an environment that feels quite fresh compared to the sweltering summer months. The 86% humidity might be uncomfortable for some, yet it contributes to the lush, vibrant landscapes of the region. For a detailed look at Guiuan's climate throughout the year, you can explore Guiuan Climate.