Last updated: August 21, 2025
In July, Karatsu, Japan experiences a warm climate, with maximum temperatures reaching up to 33°C (91°F) and an average of 26°C (79°F). Nights cool down to a pleasant 20°C (68°F), providing a comfortable respite from the daytime heat. However, this month is also characterized by significant precipitation, with 323 mm (12.7 in) of rain falling over 18 days, leading to a notably high humidity level of 97%. Travelers can expect a blend of sunshine and showers, making it essential to prepare for sudden downpours while enjoying the lush landscapes that thrive from the abundant moisture.
In Karatsu, Japan, July signals the peak of summer, with temperatures soaring to a maximum of 33°C (91°F) and an average of about 26°C (79°F). This month experiences a significant rise from the previous months, as the minimum temperature climbs to 20°C (68°F), inviting residents and visitors alike to revel in the warmth and vibrant outdoor activities. The trend of escalating temperatures, starting from a chilly -1°C (31°F) in January, reaches its zenith in July, hinting at the region's transition into a humid, lively season. As vacations and festivals abound, the balmy weather complements the lively atmosphere of this coastal town, making it an ideal time to explore Karatsu's stunning beaches and cultural sites.
July is a significant month for precipitation in Karatsu, Japan, where the rainfall peaks dramatically to 323 mm (12.7 in) over an average of 18 days. This surge marks a stark contrast to the preceding months, significantly outpacing June’s 191 mm (7.5 in), demonstrating the onset of the heavy summer rains. The frequency of rainy days not only heightens the monthly totals but also creates a lush, verdant landscape characteristic of this season. Following July, August also sees substantial rainfall at 266 mm (10.5 in), but with fewer rainy days, suggesting a slight respite from the intense downpours. This trend highlights the distinctive weather patterns of Karatsu, making July a pivotal month in the region’s annual precipitation cycle.
In Karatsu, Japan, July marks the peak of humidity, reaching an impressive 97%. This month is characterized by a noticeable shift as humidity levels soar from the spring and early summer, where values gradually climbed from 71% in March to 91% in June. Following July, humidity starts to decline, though it remains high at 94% in August. The trend is clear: as the warm summer days progress, the air becomes increasingly saturated, creating a muggy atmosphere that defines the essence of a Japanese summer. This seasonal cycle is a reminder of how closely intertwined weather patterns are with the experience of life in Karatsu, where the humid air enhances the lush beauty of the landscapes and the vibrancy of local culture.
In July, Karatsu, Japan, experiences its highest UV Index of the year at 12, placing it in the extreme exposure category. With a burn time of just 10 minutes, it's crucial for residents and visitors alike to take protective measures against the sun’s harsh rays. This peak in UV exposure follows a steady climb from January’s moderate index of 4, showcasing a significant seasonal shift towards intense sunlight as summer approaches. Both June and August mirror July’s extreme conditions with an identical UV Index of 12, indicating that the region maintains a sustained risk during this peak summer period. For those eager to enjoy outdoor activities, understanding these trends and preparing accordingly is essential. Stay informed about UV levels throughout the year by checking out the detailed forecast at Karatsu UV Index.
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In July, Karatsu, Japan, basks in the warm embrace of the summer sun, accumulating an impressive 283 hours of sunshine. This month marks a slight dip from June's totals but showcases the steady sunshine trend typical for the season. As the year progresses, July follows a gradual crescendo of daylight, starting from a modest 178 hours in January and reaching its peak in August with 305 hours. This progression illustrates a delightful transition from the cool winter months to the vibrant summer climate, creating an inviting atmosphere perfect for outdoor adventures and local festivals. As the days shorten towards autumn, September still holds onto a generous 257 hours of sunlight, effectively extending the joys of summer in this charming coastal town.
In Karatsu, Japan, the month of July reflects a notable dip in the likelihood of sunny weather, with only a 21% chance of sunshine. This figure contrasts sharply with the brighter months that precede it, as June offers a relatively low 27% chance and transitions into a sunnier outlook by October, which boasts a robust 60% chance of sunny days. The trend suggests that while the summer months can be expected to have some sunny interludes, July's weather tends to lean towards the overcast, making it one of the cloudier periods in the region. As the seasons shift, residents and visitors alike may find that the charm of Karatsu lies not in its sunshine, but in its rich culture and beautiful landscapes waiting to be explored beneath the clouds.
In Karatsu, Japan, the month of July is marked by a generous 14 hours of daylight, aligning with the peak of summer when the days are longest. This trend of increasing daylight begins in the early months of the year, with only 10 hours in January and February, gradually lengthening as spring unfolds. By April and May, the sunshine extends to 13 hours, setting the stage for June’s bright 14 hours. Following July, daylight begins to taper off, with 13 hours in August and down to 12 hours in September, illustrating a clear transition as summer gives way to autumn. This natural rhythm of daylight not only influences daily life in Karatsu but also underscores the region's captivating seasonal shifts.
In July, the winds in Karatsu, Japan experience a gentle shift, with an average speed of 3.2 m/s (7 mph)—a modest increase from June's calm breezes. This transition reflects a trend of waning winds through the early summer months, where the average dropped to its lowest point in June at 2.7 m/s (6 mph). As the season progresses, the winds begin to regain some strength, with August following closely at 3.3 m/s (7 mph). Throughout the year, a distinct pattern emerges; the wind speeds tend to be stronger in the colder months, peaking at 4.8 m/s (11 mph) in both January and February. This cyclical dance of wind speeds captures the dynamic nature of Karatsu's climate, blending the tranquility of summer with the invigorating gusts of winter.
Weather in Karatsu varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Karatsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
July and January present a stark contrast in weather conditions. In July, temperatures range from a minimum of 20°C (68°F) to a maximum of 33°C (91°F), with an average of 26°C (79°F). This month also experiences heavy precipitation, totaling 323 mm (12.7 in) over 18 days, accompanied by high humidity at 97%. In stark contrast, January sees much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 18°C (64°F), averaging just 8°C (46°F). Precipitation is significantly lower in January, totaling 69 mm (2.7 in) over only 9 days and with a humidity of 73%. For more details on January weather, you can refer to Karatsu weather in January.
July and February present stark contrasts in weather conditions. July boasts warm temperatures with a minimum of 20°C (68°F) and an average of 26°C (79°F), peaking at a hot 33°C (91°F). However, this warmth comes with significant rainfall, accumulating 323 mm (12.7 in) over 18 days, and extreme humidity reaching 97%. In contrast, February experiences much cooler weather, with temperatures ranging from a chilly minimum of 0°C (31°F) to a comfortable maximum of 19°C (67°F) and an average of 8°C (47°F). Rainfall is significantly lower in February, at 84 mm (3.3 in) across 11 days, and humidity is also more manageable at 69%. For more details on February's climate, you can visit Karatsu weather in February.
July and March present strikingly contrasting weather conditions. In July, temperatures range from a minimum of 20°C (68°F) to a maximum of 33°C (91°F), with an average of 26°C (79°F). This month also sees significant rainfall, with 323 mm (12.7 in) over 18 days and high humidity at 97%. Conversely, March experiences much cooler temperatures, with a minimum of 5°C (41°F), an average of 12°C (53°F), and a maximum of 20°C (68°F). Precipitation is less intense in March, totaling 136 mm (5.4 in) across 11 days and with a more comfortable humidity level of 71%. For a detailed look at temperatures in this transitional month, check out Karatsu weather in March.
When comparing the weather in July and April, it’s clear that July is significantly warmer and more humid. July boasts minimum temperatures around 20°C (68°F), peaking at an average of 26°C (79°F) and reaching highs of 33°C (91°F). In contrast, April experiences much cooler weather, with minimum temperatures of 7°C (45°F) and an average of 15°C (59°F), culminating at a maximum of 24°C (75°F). Additionally, July sees heavier rainfall, with 323 mm (12.7 in) of precipitation over 18 days, compared to just 115 mm (4.5 in) over 9 days in April. The humidity in July is notably high at 97%, which contributes to the muggy conditions, while April's humidity is a more comfortable 79%. For more detailed information, you can visit Karatsu weather in April.
In comparison to May, July experiences significantly warmer temperatures, with a minimum of 20°C (68°F) compared to May's 11°C (53°F), and an average temperature of 26°C (79°F) versus May's 19°C (67°F). July also sees much higher maximum temperatures, reaching up to 33°C (91°F), while May peaks at 27°C (80°F). However, July is considerably wetter, with 323 mm (12.7 in) of precipitation over 18 days, compared to May's 153 mm (6.0 in) over 11 days. The humidity is also higher in July at 97%, compared to May's 87%. For more detailed insights into May's weather, you can visit Karatsu weather in May.
In comparison to June, July experiences higher temperatures, with a minimum of 20°C (68°F) and an average of 26°C (79°F), compared to June's minimum of 17°C (63°F) and average of 22°C (73°F). The maximum temperature in July can reach up to 33°C (91°F), while June peaks at a lower 29°C (84°F). However, July is also significantly wetter, receiving 323 mm (12.7 in) of precipitation over 18 days, whereas June sees only 191 mm (7.5 in) across 13 days. Additionally, July's humidity escalates to a sweltering 97%, compared to June's 91%. For more detailed insights into June weather, check out Karatsu weather in June.
In July, the weather is characterized by a broader range of temperatures, with a minimum of 20°C (68°F) and an average of 26°C (79°F), peaking at 33°C (91°F). However, July also brings significant rainfall, accumulating 323 mm (12.7 in) over 18 days, coupled with high humidity levels at 97%. In contrast, August experiences a slightly warmer average temperature of 28°C (83°F), with a minimum of 21°C (70°F) and a max still reaching 33°C (92°F). August sees a reduction in precipitation, totaling 266 mm (10.5 in) over just 13 days, and a marginally lower humidity of 94%. For a detailed look at the weather specifics for August, you can check out Karatsu weather in August.
In comparing the weather of July and September, July tends to be warmer and more humid, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 33°C (91°F) and an average of 26°C (79°F). It also experiences significant rainfall, with about 323 mm (12.7 in) of precipitation over 18 days. In contrast, September sees slightly cooler temperatures, with a minimum of 19°C (66°F), an average of 25°C (77°F), and a maximum of 32°C (91°F). While rain is still present, September's precipitation totals 210 mm (8.3 in) over 16 days, and the humidity drops to 84%, making the month more comfortable overall. For a detailed look at September weather, check out Karatsu weather in September.
July and October present contrasting weather patterns, with July characterized by much warmer temperatures and higher humidity. In July, temperatures range from a minimum of 20°C (68°F) to a maximum of 33°C (91°F), while October sees milder temperatures, with a minimum of 13°C (56°F) and a maximum of 29°C (84°F). Additionally, July is marked by substantial rainfall, accumulating 323 mm (12.7 in) over 18 days, compared to October's significantly lower precipitation of 112 mm (4.4 in) over just 10 days. This results in a much more humid July at 97%, compared to October’s 79%. For a closer look at the weather in October, you can visit Karatsu weather in October.
July and November showcase contrasting weather patterns. In July, temperatures soar with a minimum of 20°C (68°F) and an average of 26°C (79°F), peaking at a sweltering 33°C (91°F). This month is also characterized by high humidity at 97% and significant precipitation, with rainfall occurring on 18 days, totaling 323 mm (12.7 in). In stark contrast, November enjoys milder temperatures, with a minimum of 7°C (45°F), an average of 15°C (59°F), and a maximum of 23°C (74°F). The month sees much less rainfall, accumulating only 53 mm (2.1 in) over just 7 days, and the humidity declines to 75%. For more specific insights into November weather, you can refer to Karatsu weather in November.
July and December present stark contrasts in weather. In July, temperatures reach a minimum of 20°C (68°F), averaging around 26°C (79°F), and can peak at 33°C (91°F), making it one of the warmest months of the year. However, it also sees significant rainfall, with 323 mm (12.7 in) of precipitation over 18 days and high humidity at 97%. In comparison, December offers a much cooler climate, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 21°C (71°F), and a much lower average of 10°C (50°F). Precipitation drops to 81 mm (3.2 in) over just 9 days, and humidity also decreases to 72%. For a more detailed perspective on December weather, you can check Karatsu weather in December.
July in Karatsu stands out with its warm temperatures and high humidity, creating a sultry atmosphere that contrasts with the cooler months. With an average temperature reaching 26°C (79°F) and maximums peaking at 33°C (91°F), it's the heart of summer where the days are both long and balmy. However, this season also brings an increased chance of rain, with nearly 18 days of precipitation resulting in a total of 323 mm (12.7 in), making July notably wetter than the preceding months. Coupled with humidity levels soaring to an impressive 97%, the combination of heat and moisture contributes to a uniquely tropical feel, setting July apart in the weather calendar. For more detailed insights on the climate, check out Karatsu Climate.