Last updated: August 21, 2025
January in Amakusa, Japan offers a diverse weather experience, with temperatures ranging from a pleasant maximum of 21°C (69°F) to a chilly minimum of -2°C (29°F). The region enjoys an average temperature of 8°C (47°F), making it a cool but manageable winter month. Visitors can expect 54 mm (2.1 in) of precipitation over approximately 6 days, contributing to an average humidity of 75% that enhances the crisp winter air. This unique blend of temperatures and moisture creates a picturesque, albeit brisk, winter atmosphere ideal for exploring Amakusa's natural and cultural treasures.
In Amakusa, Japan, January presents a chilly atmosphere with temperatures ranging from a brisk -2°C (29°F) at night to a comfortable 21°C (69°F) during the day, averaging around 8°C (47°F). This month marks the transition into a warming trend, as temperatures steadily rise until the arrival of spring. The early part of the year is characterized by cool nights and mild days, setting the stage for February’s slight increase in average temperature to 9°C (49°F). As one moves through the months, Amakusa experiences a remarkable shift, gradually elevating temperatures until they peak in the sweltering summer months of July and August, when averages soar to nearly 30°C (86°F) and beyond. Thus, January serves as a pivotal month, indicating the beginning of a gradual warming trend that culminates in the vibrant warmth of late spring and summer.
In January, Amakusa experiences relatively mild precipitation, with 54 mm (2.1 in) falling over just 6 days. This marks the beginning of the year's wet season, which gradually intensifies in the following months. As winter gives way to spring, February sees a substantial increase in rainfall to 91 mm (3.6 in) across 9 days, and March ramps up even further with 143 mm (5.6 in) over 12 days. This upward trend continues through the spring, culminating in the peak of the rainy season by July, when the island receives an impressive 475 mm (18.7 in) over 19 days. The pattern indicates a clear shift from the relatively dry start of the year to the heavy downpours typical of summer, making January a brief respite before the region plunges into a more humid and wet climate.
In January, Amakusa, Japan experiences a humidity level of 75%, setting the stage for a year characterized by fluctuating moisture in the air. As winter fades into spring, humidity levels decrease slightly in February and March, both at 71%, providing a brief respite before April sees a rise to 78%. This increase marks the beginning of a gradual ascent, peaking in the summer months. By July and August, the humidity surges to 92% and 91%, enveloping the region in a sultry embrace. As autumn approaches, humidity begins its descent, dropping to 84% in September and stabilizing around the 80% mark through the latter part of the year. Overall, January serves as a pivotal point in Amakusa’s climate narrative, leading into a cycle of humidity that reflects the enchanting yet challenging conditions of each season.
In January, Amakusa experiences a moderate UV Index of 5, suggesting that while sun exposure can be enjoyed, it's essential to take precautions—particularly with a burn time of 30 minutes. As the year progresses, a noticeable trend emerges: the UV Index climbs steadily, hitting 6 in February and escalating to 9 by March, where sun protection becomes increasingly critical. This rise continues into April and May, peaking at an extreme 12 in the summer months, compelling residents and visitors alike to limit sun exposure to just 10 minutes for safety. Such fluctuations highlight the importance of monitoring UV levels, especially as Amakusa transitions from the more manageable winter months into the intense summer sun. For more detailed information, visit Amakusa UV Index.
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In Amakusa, Japan, January begins the year with 189 hours of sunshine, setting the stage for a gradual increase as winter transitions to spring. February sees a rise to 236 hours, hinting at the longer days ahead. By March, the sun blossoms even further, offering 268 hours, a promising precursor to the vibrant months that follow. April and May peak with 286 and 282 hours respectively, showcasing the region's full embrace of spring. As summer approaches, sunshine remains plentiful; June brings 257 hours, while July and August shine brightly with 274 and a robust 305 hours. However, as autumn settles in, the sunshine begins to wane, dropping to 264 hours in September and tapering off further in October and November. Ultimately, December closes the year with 224 hours, a gentle reminder of the seasonal ebb and flow of light in Amakusa.
In Amakusa, Japan, January offers a modest 38% chance of sunny weather, setting the stage for a cool winter backdrop. As the year progresses, the likelihood of sunshine slightly improves, peaking at 63% in October before gradually declining again to a mere 19% in July. Interestingly, January's sunny chances align closely with March's 38%, suggesting a consistent winter weather pattern, while November and February follow closely behind at 48% and 43% respectively. Overall, while you'll have to embrace a few gray days in January, the promise of clearer skies begins to emerge as winter transitions into spring.
In Amakusa, Japan, January marks the beginning of a gradual increase in daylight hours, with the sun gracing the skies for 10 hours. As winter transitions to spring, February and March both enjoy 11 hours of daylight, hinting at the approaching warmth and longer days. April awakens to a full 12 hours, followed by longer evenings in May and June, where daylight stretches to 13 and 14 hours, respectively. This pattern remains steady through July, before a gradual decline begins in August, bringing us back to 13 hours. As autumn approaches, September and October see a decrease to 12 and then 11 hours, while the year closes with January’s familiar 10 hours once more. This rhythmic cycle illustrates the beautiful interplay of seasons in Amakusa, where each month promises a delightful dance of daylight.
In Amakusa, Japan, January ushers in a gentle average wind speed of 3.2 m/s (7 mph), setting the tone for a calm winter. This slight breeze is typical for the season, as wind speeds gradually rise to a peak of 3.3 m/s in February before tapering off in the subsequent months. As spring approaches, the winds soften, dropping to about 2.9 m/s in April, and even more in June, where it reaches a tranquil 1.8 m/s (4 mph). Interestingly, while summer months like July and August see a modest increase, the winds remain mild overall, rarely exceeding 3.0 m/s for the rest of the year. This cyclical pattern of gentle breezes fosters a serene atmosphere, making Amakusa an idyllic spot for those seeking peace amidst nature's embrace.
Weather in Amakusa varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Amakusa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather tends to be slightly cooler with an average temperature of 8°C (47°F) and a maximum reaching 21°C (69°F). Precipitation is lower than in February, with about 54 mm (2.1 in) falling over 6 days, coupled with a humidity level of 75%. In contrast, February shows a slight increase in average temperature to 9°C (49°F) and a maximum of 22°C (72°F). However, it is also wetter, experiencing 91 mm (3.6 in) of rainfall over 9 days, and the humidity drops slightly to 71%. For more detailed insights, refer to Amakusa weather in February.
January and March showcase a notable transition in weather conditions. In January, temperatures range from a chilly minimum of -2°C (29°F) to an average of 8°C (47°F), with a maximum of 21°C (69°F). This month experiences about 54 mm (2.1 in) of precipitation over 6 days, paired with a humidity level of 75%. In contrast, March brings milder temperatures, starting at a minimum of 3°C (38°F), averaging 13°C (56°F), and peaking at 25°C (78°F). However, March is significantly wetter, with total precipitation reaching 143 mm (5.6 in) over 12 days, while humidity slightly declines to 71%. For more detailed information, you can explore Amakusa weather in March.
January and April exhibit distinctly different weather patterns. In January, temperatures range from a chilly minimum of -2°C (29°F) to a mild maximum of 21°C (69°F), with an average of 8°C (47°F). Precipitation is relatively moderate at 54 mm (2.1 in), falling over six days, while humidity hovers around 75%. In contrast, April brings warmer temperatures, with a minimum of 6°C (42°F), an average of 17°C (63°F), and a peak of 29°C (84°F). The month is wetter, recording 134 mm (5.3 in) of precipitation over nine days, and humidity rises slightly to 78%. For more detailed insights into April's weather conditions, you can visit Amakusa weather in April.
In January, the weather is quite cool, with temperatures ranging from a chilly -2°C (29°F) to a pleasant 21°C (69°F) on average. Humidity levels are moderate at 75%, and there’s a relatively low precipitation of 54 mm over about six days. In contrast, May brings a significant shift, with temperatures rising considerably—ranging from a minimum of 10°C (50°F) to a warm maximum of 30°C (86°F), leading to an average of 21°C (70°F). However, May also sees increased precipitation at 224 mm over 11 days and slightly higher humidity at 84%. For more details on the weather in May, you can check this link: Amakusa weather in May.
January and June present a striking contrast in weather. In January, temperatures range from a chilly -2°C (29°F) at night to a mild 21°C (69°F) during the day, with an average of 8°C (47°F). Precipitation is relatively low, with about 54 mm (2.1 in) occurring over just 6 days and humidity sitting at 75%. In contrast, June experiences much warmer conditions, with minimum temperatures around 16°C (61°F) and maximums peaking at 32°C (90°F), averaging 24°C (76°F). However, this month also brings a significant increase in rainfall, totaling 298 mm (11.7 in) over 16 days, accompanied by higher humidity at 86%. For more details on the weather in June, visit Amakusa weather in June.
January and July present stark contrasts in weather conditions. In January, temperatures range from a chilly -2°C (29°F) to a mild 21°C (69°F), with an average of 8°C (47°F). Precipitation is relatively low at 54 mm (2.1 in) over just 6 days, accompanied by a humidity level of 75%. In contrast, July sees significant warmth, with temperatures varying from a comfortable 20°C (68°F) to a scorching 37°C (99°F), averaging 28°C (82°F). Rainfall surges in July to 475 mm (18.7 in) across 19 days, and the humidity climbs to 92%. For more detailed information about the weather in this month, you can visit Amakusa weather in July.
January and August present stark contrasts in weather. In January, temperatures range from a chilly -2°C (29°F) to a mild 21°C (69°F), with an average of 8°C (47°F). The month experiences relatively low precipitation at 54 mm (2.1 in) over about 6 days, and humidity levels hover around 75%. In contrast, August brings much warmer conditions, with temperatures soaring from a minimum of 21°C (69°F) to a scorching maximum of 39°C (103°F), averaging 29°C (85°F). August is also much wetter, with precipitation reaching 295 mm (11.6 in) over 15 days and humidity climbing to 91%. For those interested in the specifics of the weather during this month, more details can be found here: Amakusa weather in August.
In January, the weather is quite cool, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (69°F). The average temperature hovers around 8°C (47°F), accompanied by a moderate level of precipitation measuring 54 mm (2.1 in) over about 6 days, and a humidity level of 75%.
In contrast, September experiences significantly warmer temperatures, with a minimum of 17°C (62°F) and a peak of 35°C (95°F), resulting in an average of 26°C (79°F). The month is also wetter, receiving 227 mm (8.9 in) over 15 days and a higher humidity of 84%.
For a detailed look at the weather patterns in September, you can check Amakusa weather in September.
In January, the weather is relatively cool, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (69°F) and an average of around 8°C (47°F). Precipitation is less frequent, occurring on about 6 days, and the humidity sits at 75%. In contrast, October brings much warmer conditions, with temperatures ranging from a minimum of 11°C (52°F) to a soaring maximum of 33°C (92°F), averaging at 21°C (70°F). This month sees higher precipitation levels at 120 mm (4.7 in), with rain falling on around 9 days and humidity increasing to 83%. For a detailed overview, you can check Amakusa weather in October.
When comparing the weather in January and November, notable differences emerge. January typically presents colder conditions, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (69°F) and an average temperature of 8°C (47°F). It also sees lower precipitation levels of 54 mm (2.1 inches) over 6 days and a humidity of 75%. In contrast, November experiences much milder weather, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 26°C (79°F) and an average of 15°C (59°F). This month is wetter, recording 88 mm (3.5 inches) of rainfall over 8 days and a slightly higher humidity level of 81%. For a detailed look at November weather specifically, visit Amakusa weather in November.
In January, the weather tends to be slightly cooler than in December, with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (69°F), compared to December's milder minimum of 1°C (33°F) and maximum of 25°C (77°F). Additionally, January experiences less precipitation, with 54 mm (2.1 in) over about 6 days, in contrast to December's 90 mm (3.5 in) over 7 days. Humidity levels are fairly similar, with January at 75% and December slightly higher at 79%. For a more detailed look at December's weather, you can visit Amakusa weather in December.
As January settles in, Amakusa showcases a distinct shift in weather, providing a refreshing contrast to the warmer months. The temperatures drop, with cooler averages and occasional chilly dips, while the humidity remains notably high, creating a crisp but comfortable atmosphere. With about six days of precipitation, this month also brings a welcome moisture that nourishes the landscape, setting the stage for vibrant spring growth. For those looking to delve deeper into the year's seasonal variations, explore more at Amakusa Climate.