Last updated: August 28, 2025
In January, Co To, Vietnam experiences a mild coastal climate, characterized by an average temperature of 17°C (63°F), with daily highs reaching up to 22°C (72°F) and lows dipping to about 9°C (48°F). This month sees 39 mm (1.5 in) of rainfall spread over approximately 8 days, contributing to a pleasant yet humid atmosphere with 66% humidity. Travelers can expect a refreshing blend of cool air and soft showers, making January an ideal time for exploring the picturesque landscapes of this island paradise.
In January, Co To, Vietnam experiences a refreshing start to the year, with temperatures ranging from a brisk 9°C (48°F) at night to a pleasant maximum of 22°C (72°F) during the day, averaging around 17°C (63°F). This cool climate allows for enjoyable outdoor activities without the sweltering heat typical of later months. As February approaches, there’s a slight warming trend, with minimums rising to 10°C (50°F) and maintaining a peak of 22°C (73°F). Moving into March, the temperatures continue to rise, indicating the onset of spring, with the average reaching 21°C (69°F) and nighttime lows at 15°C (60°F). This gradual warming paves the way for more comfortable days ahead through April and beyond, showcasing a clear transition from the cooler winter months to the warmer, more vibrant temperatures of summer.
In January, Co To, Vietnam, experiences a modest precipitation total of 39 mm (1.5 in) over approximately 8 days, setting the stage for the wetter months ahead. The rainfall begins to increase steadily in February, with 51 mm (2.0 in) recorded, signaling the onset of a gradual shift towards the region's more intense rainy season. By March, precipitation rises to 57 mm (2.2 in), continuing the upward trend, while the subsequent months witness a dramatic escalation, peaking in July and August with 435 mm (17.1 in) and 594 mm (23.4 in) respectively. This pattern underscores a distinct seasonal fluctuation, leading to drier conditions again in November and December, where January's figures reflect both a transition period and a preview of the heavier rainfalls to come later in the year.
In January, Co To, Vietnam experiences a comfortable humidity level of 66%, setting the stage for the gradual rise that follows in the coming months. As winter transitions into spring, February sees humidity increase to 71%, and by March, it climbs further to 73%. This trend continues into the warmer months of April and May, where humidity peaks at 76%. The onset of summer in June brings about a significant jump to 79%, leading to the height of the humidity season in July and August, both recording an elevated 86%. Following this peak, humidity begins to taper off in the fall months, with September dropping to 78%, and October and November showing more moderate levels at 72% and 69%, respectively. By the end of the year, December sees a slight increase to 70%, rounding out a year characterized by a steady climb in humidity, particularly in the summer months.
In January, Co To, Vietnam, welcomes visitors with a UV Index of 8, categorized as very high, where a mere 15 minutes of sun exposure can lead to sunburn. As the months progress, the UV Index steadily escalates, peaking at 14 in July and August with an extreme risk level and a significantly reduced burn time of just 10 minutes. This trend continues into September and October, where the index remains high but starts to decline. By November, the UV Index drops to 9, still very high, before leveling out to a more moderate 7 in December. These fluctuations highlight the crucial importance of sun safety throughout the year in Co To. For a detailed view of the UV Index throughout the year, check out Co To UV Index.
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In January, Co To, Vietnam basks in a delightful 185 hours of sunshine, setting the stage for a year filled with vibrant weather. As winter transitions into spring, sunshine hours gradually increase, peaking in April with an impressive 265 hours. This upward trend continues through May and June, where the island enjoys its sunniest months, basking in 314 and 304 hours respectively. Following this golden stretch, the sun begins to recede slightly in the summer's wake, but still offers generous rays well into the fall. September and October see 291 and 270 hours of sunshine, ensuring that Co To remains a warm and inviting destination. Even as the year draws to a close, with November and December slipping to 254 and 242 hours, the charm of Co To emerges beautifully, making every moment in this tropical paradise a bright one.
In Co To, Vietnam, January presents a moderate likelihood of sunny weather, with a 51% chance of sunshine gracing the island's picturesque landscapes. This puts January in a favorable position compared to the following months, especially February, which boasts a 63% chance of clear skies. As winter deepens into spring, the likelihood of sunshine begins to fluctuate, dipping to 37% in March and further declining in the subsequent months, reaching a low of just 16% in June. Interestingly, the chance of sunshine begins to recover towards the end of the year, with November and December showing 56% and 55%, respectively. Thus, while January offers a promising start to the year in terms of sunny weather, the months ahead present a mix of variability before heading back into sunnier days as the calendar year wraps up.
In Co To, Vietnam, the month of January ushers in a steady 11 hours of daylight, a trend that continues into February. As spring approaches in March and April, daylight gradually increases, reaching up to 12 hours, providing longer opportunities for exploration and outdoor activities. May through July showcases the height of daylight with a consistent 13-hour stretch, perfect for soaking up the sun and enjoying the vibrant landscapes. As the seasons shift towards autumn, August and September see daylight dipping back to 12 hours, followed by a gradual decrease to 11 hours in October and November. Finally, December concludes the year with the least daylight at 10 hours, reminding residents and visitors alike of the beautiful ebb and flow of nature's light throughout the year.
In January, Co To, Vietnam greets visitors with a refreshing average wind speed of 5.6 m/s (12 mph), setting a lively tone for the new year. This brisk pace continues into May, maintaining the same wind speed, which suggests a breezy sheltered environment ideal for outdoor enthusiasts. As the months progress, the winds pick up significantly in June, reaching 6.6 m/s (15 mph), before gradually descending through July and August. The autumn months witness a notable shift, particularly in October, where the wind speed surges to an impressive 8.2 m/s (18 mph), hinting at seasonal transitions. November and December follow with consistently strong winds around 6.5 m/s (15 mph) and 6.3 m/s (14 mph), providing ample freshness as the year comes to a close. This pattern of variability reveals Co To’s dynamic climate, where each month brings its unique maritime charm, perfect for those looking to embrace the coastal winds.
Weather in Co To varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Co To, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between January and February, January showcases slightly cooler temperatures, with an average of 17°C (63°F) compared to February's 18°C (64°F). The minimum and maximum temperatures remain relatively stable, with January recording a minimum of 9°C (48°F) and a maximum of 22°C (72°F), while February has a minimum of 10°C (50°F) and a maximum of 22°C (73°F). However, February experiences increased precipitation, totaling 51 mm (2.0 in) over 8 days, compared to January's 39 mm (1.5 in) with the same number of rainy days. Additionally, humidity rises from 66% in January to 71% in February. For more details, you can check Co To weather in February.
In comparing the weather between January and March, we can see a notable improvement in temperatures, with March experiencing higher averages and maximums. While January has a minimum temperature of 9°C (48°F) and reaches an average of 17°C (63°F), March starts at a warmer minimum of 15°C (60°F) and boasts an average of 21°C (69°F). Additionally, March tends to be slightly wetter, with 57 mm (2.2 in) of precipitation across 12 days, compared to January's 39 mm (1.5 in) over 8 days. The humidity also increases from January's 66% to March's 73%, making the air feel a bit more damp during the latter month. For more information on the weather specifics in March, you can visit Co To weather in March.
January's weather is noticeably cooler with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F). The month experiences 39 mm (1.5 in) of precipitation over about 8 days, resulting in a relative humidity of 66%. In contrast, April brings warmer conditions, with temperatures starting at a minimum of 16°C (62°F) and reaching as high as 28°C (82°F). The increase in warmth is accompanied by higher precipitation levels of 91 mm (3.6 in) over 12 rainy days, contributing to a humidity of 71%. For a closer look at the specific conditions, you can check Co To weather in April.
In January, the weather tends to be mild with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F), averaging around 17°C (63°F). The month sees about 39 mm (1.5 in) of precipitation over approximately 8 days, and the humidity is relatively comfortable at 66%. In contrast, May experiences significantly warmer temperatures, with minimums around 20°C (68°F), averages of 27°C (80°F), and highs reaching up to 31°C (88°F). Precipitation rises sharply to 137 mm (5.4 in), spread over 16 days, contributing to a higher humidity level of 76%. For a more detailed look at the weather during this vibrant month, check out Co To weather in May.
The weather in January offers a mild climate with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F) and an average of 17°C (63°F). With only 39 mm (1.5 in) of precipitation over around 8 days, January enjoys moderate humidity at 66%. In contrast, June brings a significant increase in warmth and precipitation, with temperatures soaring from a minimum of 25°C (77°F) to a maximum of 32°C (90°F) and an average of 29°C (85°F). The month also experiences heavier rainfall, totaling 252 mm (9.9 in) over approximately 19 days, coupled with higher humidity levels at 79%. For those interested in more detailed weather patterns, visit Co To weather in June.
January and July present strikingly different weather patterns. January features milder temperatures, with a minimum of 9°C (48°F) and an average of 17°C (63°F), while July brings much higher temperatures, peaking at a maximum of 32°C (89°F) and an average of 29°C (85°F). In terms of precipitation, January receives a modest 39 mm (1.5 in) over 8 days, whereas July experiences significantly heavier rainfall, accumulating 435 mm (17.1 in) across 22 days. Additionally, humidity levels are higher in July at 86%, compared to January's 66%, making the summer months feel more oppressive. For those interested in more detailed information, check out Co To weather in July.
In January, the weather is relatively mild, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F) and an average of 17°C (63°F). This month experiences about 39 mm (1.5 in) of rainfall spread over 8 days, accompanied by a moderate humidity level of 66%. In contrast, August offers significantly warmer temperatures, with a minimum of 26°C (78°F), an average of 29°C (84°F), and a peak of 32°C (89°F). This month is also notably wetter, receiving around 594 mm (23.4 in) of precipitation over 24 days and a higher humidity at 86%. For further details, you can check Co To weather in August.
January presents a mild climate with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F), characterized by a moderate humidity level of 66% and light precipitation of 39 mm (1.5 in) over about 8 days. In contrast, September experiences significantly warmer weather, with average temperatures between 25°C (77°F) and 31°C (88°F) and a higher humidity of 78%. However, this month also brings much heavier rainfall, totaling 360 mm (14.2 in) over about 22 days. For more details on the weather patterns during September, you can check Co To weather in September.
In January, the weather is mild with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F), and the average temperature sits at around 17°C (63°F). With only 39 mm (1.5 inches) of precipitation spread over 8 days, the month generally feels drier, and humidity hovers around 66%. In contrast, October brings significantly warmer temperatures, with a minimum of 20°C (68°F) and highs reaching up to 31°C (88°F), averaging 26°C (78°F). However, October is also much wetter, receiving 273 mm (10.8 inches) of rain over 16 days and a higher humidity level at 72%. For more details, you can check Co To weather in October.
January and November present distinct weather profiles. In January, the temperatures fluctuate between a minimum of 9°C (48°F) and a maximum of 22°C (72°F), with an average of 17°C (63°F). The month experiences 39 mm (1.5 in) of precipitation over about 8 days and has a humidity level of 66%. In contrast, November boasts warmer temperatures, with a minimum of 15°C (59°F) and a maximum of 27°C (80°F), averaging 23°C (73°F). The precipitation level remains the same at 39 mm (1.5 in) but occurs over 9 days, with slightly higher humidity at 69%. For a detailed look at November's climate, check out Co To weather in November.
In comparing the weather between January and December, January tends to be slightly cooler, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 22°C (72°F). In contrast, December experiences milder temperatures, with a minimum of 11°C (51°F) and a maximum of 25°C (77°F). Additionally, January has lower precipitation, totaling 39 mm (1.5 in) over an average of 8 days, compared to December's 49 mm (1.9 in) across 10 days. Both months exhibit relatively high humidity, with January at 66% and December slightly higher at 70%. For more detailed weather information, check out Co To weather in December.
January brings a mild and pleasant climate to Co To, setting it apart from the hotter summer months. With an average temperature that hovers around a comfortable 17°C (63°F), it's a prime time for outdoor activities without the sweltering heat typical of other seasons. Despite experiencing around eight days of rain, the overall precipitation is manageable, making it a perfect time for visitors to explore the island’s natural beauty. The humidity levels at 66% add a touch of tropical warmth, contributing to a refreshing atmosphere. For a more in-depth look at the weather trends throughout the year, check out the Co To Climate page.