Last updated: August 28, 2025
In January, Cat Ba, Vietnam, experiences a mild and refreshing climate, with maximum temperatures reaching around 24°C (75°F) and an average of 18°C (65°F). While the crisp air can dip to a minimum of 10°C (50°F), it provides a perfect backdrop for outdoor exploration. The month sees approximately 34 mm (1.3 in) of rain spread over 7 days, contributing to a humidity level of 66% that adds a touch of lushness to the landscape. Whether you're hiking through its stunning natural parks or cruising its scenic waters, Cat Ba in January offers a delightful retreat for travelers seeking a blend of adventure and comfort.
In January, Cat Ba, Vietnam experiences a mild winter with temperatures ranging from a cool 10°C (50°F) at night to a pleasant 24°C (75°F) during the day, averaging around 18°C (65°F). This month marks the transition into warmer weather, as temperatures steadily increase through February and into the spring months. By March, the mornings are embraced by warmer lows of 16°C (60°F), and the days can reach 27°C (80°F), hinting at the approaching summer heat. The gradual rise continues into April and May, where the temperatures shift significantly, moving from comfortable springs to the balmy embrace of summer. January is an ideal month for travelers seeking moderate weather, making it perfect for exploring the breathtaking landscapes without the sweltering heat that follows in the months ahead.
In January, Cat Ba, Vietnam, experiences relatively low precipitation, with an average of 34 mm (1.3 inches) spread over seven days. This sets the stage for the gradual increase in rainfall as the year progresses. By February, precipitation slightly rises to 36 mm, while March sees a notable surge to 50 mm. This trend continues into the spring months, where April delivers 84 mm and May escalates to 139 mm, marking the onset of the wet season. The summer months bring dramatic increases, peaking in August with a staggering 567 mm (22.3 inches) over 25 days, highlighting the intense rainfall characteristic of this tropical region. As the year winds down, precipitation tapers off with December and November seeing significantly lower amounts, underscoring the distinct wet and dry seasons that define Cat Ba's climate.
In Cat Ba, Vietnam, January sees an average humidity level of 66%, marking the start of a gradual increase as the year progresses. This trend continues into February, where humidity rises to 71%, before slightly dipping to 69% in March. As spring approaches, the humidity begins to stabilize, with April experiencing a relative low of 64%. However, as summer draws near, humidity levels rise significantly, peaking at a staggering 90% in July. This marks the height of the tropical climate, where the air feels consistently thick and humid. Following July, humidity remains high through August at 89%, and begins to decline gradually as the year winds down, with October recording 77% and November resting at 72%. By December, the humidity levels settle back to 71%, providing a clear sense of seasonal cycles characterized by a notable shift from drier to appreciably moist conditions.
In January, Cat Ba, Vietnam, experiences a UV Index of 8, categorizing the sun exposure as very high with a quick burn time of just 15 minutes. This trend of significant sun exposure continues into February, where the UV Index rises to 10, maintaining the same very high exposure level. As spring approaches, the UV Index peaks in March and April, hitting an extreme level of 12 and 13 respectively, with a dangerously brief burn time of only 10 minutes. The summer months remain intense, consistently presenting an extreme UV Index of 13 from June through September, urging visitors to be vigilant. By November, the index dips slightly to 9, still in the very high category, before falling to 7 in December, signaling a more moderate sun exposure with a longer burn time of 25 minutes. For more information on the UV Index throughout the year, check out Cat Ba UV Index.
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In Cat Ba, Vietnam, January welcomes visitors with an inviting 179 hours of sunshine. While this may seem modest, the month marks the beginning of a gradual ascent into brightness, as February shines with 223 hours. A noticeable trend emerges as spring approaches; March continues this upward trajectory with 215 hours, paving the way for vibrant April, which basks in 263 hours of glorious sunlight. This sunny spell peaks in May with an impressive 312 hours, before gradually tapering off during the summer months of June and July, where residents and travelers alike still enjoy an abundance of light, boasting 302 and 298 hours respectively. As the year progresses, the sunshine remains abundant but begins to recede, with October bringing in 261 hours and November slightly lower at 253 hours, showcasing Cat Ba's charm through every season. Ultimately, January may herald the start of the yearly cycle, but it sets the stage for a sun-soaked adventure that unfolds brilliantly in the months to come.
In Cat Ba, Vietnam, January brings a 46% chance of sunny weather, providing a decent opportunity to enjoy the island's stunning landscapes. As the year progresses, February sees a rise in sunshine with a 59% chance, making it one of the sunniest months. Interestingly, March experiences a dip to 30%, followed by April at 29%, suggesting a trend towards more overcast conditions as spring nears. As the summer months approach, the likelihood of sunshine fluctuates significantly; notably, June and August see particularly low chances, at 15% and 14% respectively, making for a sharp contrast to the sunnier February. However, as the year transitions into late autumn, the sun reappears with November and December offering 50% and 55% chances, making it a delightful time to explore Cat Ba's beauty once again.
In Cat Ba, Vietnam, January brings 11 hours of daylight, setting the stage for a consistent trend that persists into February. As spring approaches, daylight stretches to 12 hours in March and April, offering more time to explore the island's stunning landscapes. This duration peaks in May, June, and July with a generous 13 hours, perfect for beach days and outdoor adventures. As summer wanes, daylight begins to dwindle, dropping back to 12 hours in August and September. By October, the sun sets earlier again, reverting to 11 hours, and December concludes the year with 10 hours of daylight. This gradual ebb and flow of daylight illustrates Cat Ba's vibrant seasonal cycle, creating a rhythmic backdrop for visitors year-round.
In January, Cat Ba, Vietnam experiences a gentle breeze with an average wind speed of 4.3 m/s (10 mph), setting a tranquil tone for the month. This level of wind is consistent with both April and December, suggesting a seasonal stability that invites exploration and outdoor activities. As the year progresses into February and March, the winds slightly ease to 3.6 m/s (8 mph) and 3.9 m/s (9 mph) respectively, offering a calmer atmosphere. However, come May and June, a noticeable uptick occurs, reaching 5.5 m/s (12 mph) and 5.7 m/s (13 mph), ushering in summer’s more boisterous weather. The wind then fluctuates throughout the summer months but remains generally comparable to January’s pace, before sharply rising again in October to 6.0 m/s (13 mph), marking an invigorating return to breezy conditions. Overall, the wind patterns in Cat Ba reflect a captivating dance between calm and spirited, shaping the island's charm throughout the year.
Weather in Cat Ba varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Cat Ba, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather features a minimum temperature of 10°C (50°F) and an average of 18°C (65°F), with maximum highs reaching 24°C (75°F). The month sees approximately 34 mm (1.3 in) of precipitation over 7 days and maintains a humidity level of 66%. In contrast, February experiences slightly cooler mornings with a minimum temperature of 9°C (49°F), while the average and maximum temperatures remain the same at 18°C (65°F) and 24°C (75°F) respectively. Precipitation increases slightly to 36 mm (1.4 in), with the same frequency of rainy days, but humidity rises to 71%. For more detailed insights into February's weather, check out Cat Ba weather in February.
January typically offers milder temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 24°C (75°F), with an average of 18°C (65°F). The month experiences about 34 mm (1.3 in) of precipitation over 7 days, accompanied by a humidity level of 66%. In contrast, March sees a noticeable increase in warmth, with minimum temperatures at 16°C (60°F) and maximums reaching up to 27°C (80°F), averaging around 21°C (70°F). However, it also brings higher rainfall, totaling 50 mm (2.0 in) across 13 days, and a slight increase in humidity at 69%. For a detailed look at weather trends, check out Cat Ba weather in March.
In January, the weather exhibits milder temperatures with a minimum of 10°C (50°F) and an average of 18°C (65°F), peaking at 24°C (75°F). It sees some precipitation, measuring 34 mm (1.3 in) over about 7 days, accompanied by a humidity level of 66%. Comparatively, April experiences warmer conditions with a minimum of 16°C (61°F), an average of 24°C (75°F), and highs reaching 29°C (85°F). However, it is also wetter, with precipitation totaling 84 mm (3.3 in) falling over 11 days, while the humidity remains relatively stable at 64%. For more detailed information, you can check out Cat Ba weather in April.
In January, temperatures are milder with averages ranging from a minimum of 10°C (50°F) to a maximum of 24°C (75°F), alongside moderate precipitation totaling 34 mm (1.3 in) over 7 rainy days and a humidity level of 66%. In contrast, May brings significantly warmer weather, with minimum temperatures starting at 20°C (69°F) and peaking at 33°C (92°F), while precipitation rises sharply to 139 mm (5.5 in) over 15 days, resulting in a higher humidity of 73%. For a closer look at the weather conditions during May, you can visit Cat Ba weather in May.
In January, the weather is mild, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 24°C (75°F). Rainfall is relatively low, totaling 34 mm (1.3 in) over about 7 days, and the humidity is moderately comfortable at 66%. In contrast, June brings much warmer conditions, with temperatures soaring from a minimum of 24°C (76°F) to a peak of 34°C (94°F), making it significantly hotter overall. The month also sees an increase in rainfall, with precipitation reaching 194 mm (7.6 in) across 15 days, and humidity climbs to 81%, contributing to a much more tropical environment. For more detailed insights into the weather, you can check the information available Cat Ba weather in June.
In January, the weather is mild, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 24°C (75°F) and an average of 18°C (65°F). The month experiences relatively low precipitation of 34 mm (1.3 in) over about 7 days, accompanied by a humidity level of 66%. In contrast, July brings much warmer conditions, with temperatures ranging from 26°C (78°F) to 33°C (92°F) and an average of 29°C (85°F). This month sees significantly higher precipitation at 325 mm (12.8 in) over 21 days and a humidity increase to 90%. For a closer look at the weather conditions during this time, you can visit Cat Ba weather in July.
The weather in January is noticeably cooler and drier compared to August. With minimum temperatures around 10°C (50°F) and maximums reaching 24°C (75°F), January offers an average temperature of 18°C (65°F) along with 34 mm (1.3 in) of precipitation over roughly 7 days. In contrast, August experiences much warmer conditions, with minimums at 25°C (78°F) and maximums soaring to 34°C (93°F), leading to an average of 29°C (85°F) and a significant 567 mm (22.3 in) of rainfall spread across 25 days. Moreover, the humidity levels rise sharply in August to 89%, making it a very humid month compared to January's 66%. For more details, check out Cat Ba weather in August.
In January, the weather is mild with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 24°C (75°F), averaging around 18°C (65°F). The month sees relatively low precipitation at 34 mm (1.3 in) over about 7 days, and the humidity stands at 66%. In contrast, September experiences much warmer and more humid conditions, with temperatures ranging from 25°C (78°F) to 33°C (92°F), averaging 29°C (84°F). The rain is significantly heavier, with 312 mm (12.3 in) of precipitation spread over 23 days, contributing to a higher humidity level of 82%. For more details on the weather in September, check out Cat Ba weather in September.
January and October present noticeably different weather patterns. In January, temperatures range from a mild 10°C (50°F) at night to a pleasant 24°C (75°F) during the day, accompanied by 34 mm (1.3 in) of precipitation over about 7 days and a humidity level of 66%. In contrast, October experiences much warmer conditions, with nighttime lows of 19°C (67°F) and daytime highs reaching up to 32°C (90°F). Precipitation significantly increases in October, totaling 284 mm (11.2 in) over approximately 17 days, with humidity rising to 77%. For more details on October weather specifically, you can check Cat Ba weather in October.
In January, temperatures range from a minimum of 10°C (50°F) to a maximum of 24°C (75°F), with an average of 18°C (65°F) and relatively low precipitation of 34 mm (1.3 in) over about 7 days. In contrast, November experiences milder temperatures with a minimum of 14°C (57°F) and a maximum of 28°C (83°F), averaging around 23°C (74°F). It also sees an increase in precipitation to 53 mm (2.1 in) spread over approximately 10 days, alongside slightly higher humidity at 72%. For more detailed insights into November weather, you can check out Cat Ba weather in November.
In January, the weather on Cat Ba Island sees slightly lower temperatures compared to December, with an average of 18°C (65°F), peaking at 24°C (75°F) and dropping to a minimum of 10°C (50°F). Precipitation is also slightly reduced in January, totaling 34 mm (1.3 in) over about 7 days, while humidity remains at a moderate level of 66%. In contrast, December experiences a bit warmer average temperature of 19°C (67°F), with maximums reaching 26°C (80°F) and a similar minimum of 10°C (50°F). December tends to be wetter, with precipitation amounts at 42 mm (1.6 in) spread over 8 days, accompanied by higher humidity of 71%. For a detailed look at the weather conditions during this month, check out Cat Ba weather in December.
In January, Cat Ba experiences a mild transition from the warmer months, with average temperatures around 18°C (65°F) and maximums peaking at 24°C (75°F). This time of year is characterized by cooler evenings and a refreshing atmosphere, making it a delightful escape from the heat of summer. While January does see some rain, totalling about 34 mm over about 7 days, the humidity remains moderate at 66%. This unique weather pattern sets January apart from the typically hotter and more humid months, offering a pleasant blend of cool breezes and scenic views. For more insights about the overall climate of the region, explore Cat Ba Climate.