Last updated: August 21, 2025
In Hayama, Japan, January brings a mix of cool temperatures and moderate humidity, making it a unique winter experience. The maximum temperature reaches a comfortable 18°C (64°F), while the average hovers around 8°C (47°F), dipping to a chilly minimum of 1°C (34°F) at night. This month also sees 64 mm (2.5 in) of precipitation spread over 6 days, ensuring the landscape remains fresh and vibrant. With a humidity level of 76%, visitors can expect a crisp yet pleasantly damp atmosphere, perfect for exploring the scenic beauty of this coastal gem.
In January, Hayama, Japan, experiences a mild winter, with temperatures ranging from a chilly 1°C (34°F) to a comfortable 18°C (64°F). The average temperature hovers around 8°C (47°F), signaling a gradual transition into warmer months. As the month progresses, the temperatures begin to slightly rise, setting the stage for February, which is only marginally warmer. January's climate not only showcases a gentle embrace of winter but also hints at the upcoming spring warmth, with gradual increases in both nightly lows and daytime highs, embodying a blend of crispness and comfort unique to this time of year.
In January, Hayama, Japan experiences a relatively modest precipitation total of 64 mm (2.5 in) over just 6 days. This sets the tone for the month, as it falls slightly below the subsequent month's precipitation of 62 mm in February. Following this, the region sees a significant uptick in rainfall, especially from March onward, where precipitation nearly triples to 172 mm (6.8 in), peaking dramatically in October with 303 mm (11.9 in). The trend highlights a gradual increase in rainfall as winter transitions into spring, with April and May also delivering substantial amounts. As we proceed into the summer months, particularly July and September, the rain intensifies, reflecting Hayama's dynamic climate patterns that shift from occasional winter showers to the heavy downpours of late summer and early autumn.
In January, Hayama, Japan, experiences a humidity level of 76%, marking the start of the year with relatively high moisture in the air. As winter transitions into spring, February and March see a slight decline in humidity, stabilizing at 74% and 70%, respectively. This dip hints at the changing seasons, but as April rolls in, humidity bounces back to 74%. The warmer months starting in May bring an increase in humidity, peaking in July at a notable 93%, creating a thick and sultry atmosphere. August follows closely with 90%, before the levels gradually decline through September (86%), October (83%), and November (80%), indicating a return to cooler and drier conditions as the year comes to a close. December brings a small rise again to 78%, completing the cycle of humidity that reflects the seasons in this picturesque coastal town.
In January, Hayama, Japan, experiences a moderate UV Index of 4, indicating that the risk of harm from unprotected sun exposure is manageable for most individuals, with a burn time of around 30 minutes. As the month transitions into February, the UV Index rises slightly to 5, maintaining the moderate classification but prompting a bit more caution for sun-seekers. The trend shifts dramatically in March when the UV levels leap to 8, entering the very high category, which requires vigilance as burn times reduce to just 15 minutes. This trend continues into April and May, peaking at 11 during the late spring and summer months, where a mere 10 minutes can lead to sunburn without proper protection. The UV Index remains at its highest through the summer, before gradually tapering off in the fall. By November and December, the index returns to moderate levels of 4 and 5, allowing residents and visitors to enjoy the winter sun more safely. For more detailed information, visit Hayama UV Index.
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In January, Hayama, Japan, enjoys 187 hours of sunshine, setting the stage for the year with a modest yet inviting glow. As winter transitions into spring, the sunlight begins to embrace the region more warmly, with February bringing a noticeable increase to 224 hours. The trend continues upward through March (255 hours) and April (269 hours), culminating in the vibrant month of May, where residents bask in 286 hours of radiant sunshine. This peak leads into summer, where hours slightly dip but remain generous, showcasing 262 hours in June and 249 hours in July. The sun’s intensity returns in August, peaking at 297 hours, only to gently decline again into autumn. As the year closes, Hayama maintains a commendable number of sunny hours, wrapping up the year with 226 hours in both November and December, reflecting a beautiful cycle of sunlight that enchants throughout the seasons.
In Hayama, Japan, January greets visitors with a 53% chance of sunny weather, setting a pleasant tone for the year ahead. This likelihood of sunshine outshines the following month, February, which boasts a 64% chance, suggesting a gradual increase in clear skies as winter transitions to spring. However, as spring approaches, the sun’s appearance begins to wane, with March dropping to 41% and April slightly recovering to 49%. Interestingly, while winter and early spring enjoy relatively good sunshine, the summer months present a stark contrast, with July and August experiencing lower probabilities of sun at 35% and 38% respectively. This trend hints at the vibrant yet unpredictable nature of Hayama's climate, where sunny days can be a delightful surprise even in the cooler months.
In Hayama, Japan, January brings about 10 hours of daylight, setting the stage for a gradual shift into longer days. As the months progress, daylight duration steadily increases, peaking in May and June with an impressive 14 hours. This abundance of sunlight during late spring and early summer invites outdoor activities and a vibrant atmosphere. However, as summer transitions into fall, daylight begins to dwindle, with hours gradually declining back to 10 hours by November. December marks the shortest days of the year at just 9 hours, creating a cozy and reflective ambiance as the year comes to a close. Overall, Hayama experiences a clear seasonal rhythm, oscillating between bright, long days and shorter, more subdued ones.
In January, Hayama, Japan, experiences an average wind speed of 5.3 m/s (12 mph), setting a tone for the winter months that is both brisk and invigorating. The wind begins to pick up slightly in February, reaching 5.8 m/s (13 mph), before settling back to comparable speeds of 5.4 m/s in March and 5.2 m/s in April. This pattern suggests a gentle yet steady flow of air that characterizes the early part of the year. As spring approaches, wind speeds remain consistent, hovering around the 5.3 m/s mark through May, before dipping to lower levels in the summer months of June and July, where they fall to 3.7 m/s and 3.3 m/s, respectively. Interestingly, as the seasons shift again toward autumn, winds begin a gradual resurgence, with speeds resuming to 5.2 m/s in September and stabilizing around 5.4 m/s by both October and December. This cyclical trend showcases Hayama's dynamic climate, blending calm summer breezes with the revitalizing gusts of winter and spring.
Weather in Hayama varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Hayama, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, temperatures typically range from a minimum of 1°C (34°F) to a maximum of 18°C (64°F), with an average of 8°C (47°F). The month sees about 64 mm (2.5 in) of precipitation over 6 days, accompanied by a humidity level of 76%. In contrast, February experiences slightly milder temperatures, with minimums at 2°C (36°F) and maximums reaching 17°C (63°F), keeping the average constant at 8°C (47°F). Precipitation decreases marginally to 62 mm (2.4 in) but occurs over a greater number of days, totaling 8 days, while humidity remains relatively low at 74%. For more insights on what to expect, check out Hayama weather in February.
In January, the weather tends to be cooler with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 18°C (64°F), coupled with an average of 8°C (47°F). The month experiences moderate precipitation of 64 mm (2.5 in) over roughly 6 days, combined with a relatively high humidity level of 76%. In contrast, March showcases a slight increase in temperatures, with a minimum of 3°C (38°F), an average of 11°C (52°F), and a maximum of 19°C (66°F). However, March is marked by significantly higher precipitation at 172 mm (6.8 in) over about 12 days, alongside a lower humidity level of 70%. For more details, you can refer to Hayama weather in March.
January weather features cooler temperatures, with a minimum of 1°C (34°F) and an average of 8°C (47°F), peaking at a comfortable 18°C (64°F). The month experiences moderate precipitation, with 64 mm (2.5 in) falling over 6 days, while humidity levels hover around 76%. In contrast, April offers milder conditions, with a minimum temperature of 6°C (43°F), an average of 14°C (58°F), and a maximum reaching 21°C (70°F). However, April sees a significant increase in rainfall, totaling 141 mm (5.5 in) for the month over 12 days, and slightly lower humidity at 74%. For a closer look at the April weather specifics, visit Hayama weather in April.
In January, the weather is cool, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 18°C (64°F) and an average temperature of 8°C (47°F). The month sees about 64 mm (2.5 in) of precipitation over six days, accompanied by a humidity level of 76%. In stark contrast, May brings warmer temperatures, with a minimum of 12°C (54°F), an average of 18°C (65°F), and a maximum of 23°C (74°F). However, May is also the wettest month, experiencing 148 mm (5.8 in) of rainfall over eleven days, along with a slight increase in humidity to 81%. For a more detailed look at the conditions, visit Hayama weather in May.
January and June present contrasting weather patterns, showcasing the seasonal shifts throughout the year. In January, temperatures range from a chilly minimum of 1°C (34°F) to a mild maximum of 18°C (64°F), with an average of 8°C (47°F). This month experiences about 64 mm (2.5 in) of precipitation over just six days, accompanied by a humidity level of 76%. In stark contrast, June brings warmer temperatures, with a minimum of 16°C (62°F), an average of 21°C (70°F), and a maximum of 26°C (79°F). This summer month sees significantly higher rainfall, totaling 197 mm (7.8 in) across 13 days, and increased humidity at 88%. For more specifics on June weather, you can refer to Hayama weather in June.
January and July present strikingly different weather patterns. In January, temperatures range from a chilly 1°C (34°F) at night to a mild 18°C (64°F) during the day, with an average of 8°C (47°F). Precipitation is moderate at 64 mm (2.5 in), occurring over 6 days, along with a humidity level of 76%. In contrast, July experiences significantly warmer weather, with nighttime temperatures starting at a comfortable 19°C (66°F) and reaching up to 28°C (83°F), resulting in an average of 25°C (77°F). However, July is also characterized by higher precipitation at 226 mm (8.9 in) spread over 17 days and a much higher humidity level of 93%. For more detailed insights into July weather, you can check Hayama weather in July.
In January, the weather is relatively cool, with average temperatures ranging from a minimum of 1°C (34°F) to a maximum of 18°C (64°F) and an overall average of 8°C (47°F). The month experiences about 64 mm (2.5 in) of precipitation over approximately 6 days, accompanied by a humidity level of 76%. In stark contrast, August brings much warmer temperatures, with a minimum of 21°C (70°F) and a maximum of 31°C (87°F), averaging at 27°C (80°F). This month sees a higher precipitation level of 129 mm (5.1 in) over 12 days, along with increased humidity at 90%. For more detailed weather information, check out Hayama weather in August.
In January, temperatures are quite cool, with a minimum of 1°C and an average of 8°C, reaching a maximum of 18°C on warmer days. The month typically sees about 64 mm of precipitation across six days, accompanied by a humidity level of 76%. In contrast, September brings significantly warmer weather, with temperatures starting from a minimum of 18°C, averaging 24°C, and peaking at a maximum of 29°C. However, this month experiences much higher rainfall, totaling 208 mm over 17 days, and humidity rises to 86%. For a closer look at the weather specifics in September, you can visit Hayama weather in September.
In January, temperatures in the area are notably cooler, with average lows around 1°C (34°F) and highs reaching only up to 18°C (64°F). The month experiences relatively low precipitation, totaling 64 mm (2.5 in) over six days, along with a moderate humidity of 76%. Conversely, October brings a significant shift in weather patterns, with temperatures ranging from a milder low of 13°C (56°F) to comfortable highs of 26°C (79°F), making it much warmer overall. However, October is also characterized by increased rainfall, accumulating 303 mm (11.9 in) across 17 days, and slightly higher humidity at 83%. For more details on October weather, you can check Hayama weather in October.
In January, the weather is generally cooler, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 18°C (64°F) and an average of 8°C (47°F). Precipitation is relatively light, with about 64 mm (2.5 in) falling over approximately 6 days, and humidity levels are around 76%. In contrast, November experiences milder temperatures, with a minimum of 6°C (43°F), an average of 15°C (60°F), and a maximum reaching 21°C (71°F). This month is also wetter, recording 111 mm (4.4 in) of precipitation over 12 days, accompanied by slightly higher humidity at 80%. For more detailed information, you can check Hayama weather in November.
In January, the average temperature ranges from a minimum of 1°C (34°F) to a maximum of 18°C (64°F), resulting in slightly cooler conditions compared to December, which enjoys an average temperature from a minimum of 3°C (37°F) to a maximum of 21°C (69°F). January also sees less precipitation at 64 mm (2.5 in) over 6 days, in contrast to December's 82 mm (3.2 in) across 11 days. The humidity remains comparable, with January at 76% and December slightly higher at 78%. For a more detailed look at December weather, you can refer to Hayama weather in December.
January in Hayama presents a unique weather experience, contrasting sharply with the warmer months. While temperatures hover between a mild average and cooler lows, the chill in the air makes it feel notably crisper compared to the balmy summer days. With 76% humidity adding a slight dampness, the 64 mm of precipitation over about six days suggests a mix of overcast skies and occasional winter rainfall. This relatively wet weather, paired with the lower temperatures, makes January a season of cozy indoor activities and breathtaking winter scenery. For a deeper exploration of Hayama's climate variations throughout the year, visit Hayama Climate.