Last updated: August 21, 2025
September in Tsushima, Japan brings a mix of warmth and humidity, with maximum temperatures soaring to 37°C (98°F) and an average settling around 25°C (76°F). Minimum temperatures can dip to a refreshing 12°C (54°F), providing a pleasant contrast to the heat. Rainfall is notable, with 225 mm (8.9 in) of precipitation spread over approximately 16 days, contributing to the region’s lush landscapes. With humidity levels averaging a steamy 87%, this month encapsulates the vibrant and dynamic climatic condition of Tsushima, making it a unique destination for those seeking both warmth and the beauty of the Japanese countryside.
As September rolls in, Tsushima, Japan, experiences a delightful shift in temperatures, with a minimum of 12°C (54°F) and a comfortable average hovering around 25°C (76°F). This month marks an enjoyable transition from the sweltering heat of summer, where August's highs reach up to 38°C (100°F), to pleasantly warm days and cooler nights. With a maximum temperature of 37°C (98°F), September holds on to the remnants of summer while hinting at the arrival of autumn. The weather is perfect for outdoor exploration, allowing visitors to bask in the scenic beauty of Tsushima without the oppressive humidity seen in the peak summer months. Overall, September showcases a balmy climate, making it an excellent time to enjoy the island's natural wonders.
In September, Tsushima experiences a significant precipitation total of 225 mm (8.9 in), marking a notable shift from the dry spells of early summer. This month mirrors August's trend with 16 rainy days, maintaining a steady rhythm of rainfall that builds on the more intense downpour seen in July. As the summer heat wanes, the combination of increasing moisture and cooler temperatures creates a unique atmospheric tapestry, setting the stage for the impending autumn. Notably, September's rainfall is substantial but slightly less than July and August, suggesting a gradual tapering of the wet season while still offering lush landscapes and vibrant foliage as nature prepares for the seasonal transition.
In September, Tsushima, Japan experiences a notable shift in humidity as it retreats from the peak summer levels. With humidity recorded at 87%, September maintains a distinctly moist atmosphere, though it marks a decrease from the oppressive 93% in July and 91% in August. This month acts as a transition, offering a respite from the high summer humidity while still retaining a lush, tropical feel. As autumn approaches, the humidity begins to taper further, hinting at the drier conditions of the upcoming months. Overall, September serves as a bridge between the sweltering summer and the more comfortable autumn, reflecting the island's unique climatic rhythm.
As September arrives in Tsushima, Japan, the UV Index begins to reflect a gradual decline from the peak summer levels while still presenting significant sun exposure. With an index of 10, categorized as very high, residents and visitors should be prepared for a burn time of just 15 minutes under direct sunlight. This trend shows a shift from the extreme levels of 11 observed in the preceding months of June through August, highlighting the ongoing need for sun protection as the weather remains warm. Overall, the seasonal fluctuations indicate a shift towards more moderate UV conditions, but caution is still essential. For a detailed view of UV levels throughout the year, check out Tsushima UV Index.
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September in Tsushima, Japan, offers a delightful transition from the intense summer sun to the mellow autumn glow. With 244 hours of sunshine, September maintains a noteworthy brightness, though it's a slight dip from the summer peak of 300 hours in August. This month gracefully bridges the vibrant warmth and the cooler, crisp days ahead, showcasing a consistent trend of ample sunlight throughout the year. Following a steady increase from 185 hours in January to May's climax of 290 hours, the sunshine in September hints at a gradual shift towards the twilight of the year, yet it remains significantly brighter than the winter months that follow. As the island embraces the onset of autumn, one can appreciate the lingering warmth that September sunlight provides, creating a perfect backdrop for outdoor exploration and reflection.
In September, the likelihood of sunny weather in Tsushima, Japan stands at a modest 29%, reflecting the transition from the summer months into autumn. This marks a slight improvement from the less sunny summer months of July and August, which see chances of sun at 31% and 27%, respectively. However, the probability remains lower than the brisk 56% and 59% enjoyed in October and November, highlighting a trend towards clearer skies as the season progresses. If you're planning a visit during September, be prepared for a mix of sun and clouds, as the remnants of summer linger just before the refreshing autumn weather sets in.
As summer transitions into autumn, September in Tsushima, Japan, showcases a gentle decline in daylight, with approximately 12 hours of sunlight. Following the peak of 14 hours in June and July, the days start to wane, marking the arrival of a cooler season. This gradual reduction in daylight hours is characteristic of the shift from the vibrant summer months to the crispness of fall, where the lush landscapes begin to subtly change. The patterns observed throughout the year highlight a rhythmic dance of light, where the longest days of summer gracefully give way to the shorter, serene days of autumn, each month offering its unique charm and atmosphere.
As September arrives in Tsushima, Japan, the winds begin to take on a gentle demeanor, with an average speed of just 1.7 m/s (4 mph). This marks one of the calmest months of the year, following a gradual decline in wind intensity since the more robust breezes of early spring. From a peak in March and April at 3.0 m/s (7 mph), the wind eases through the summer before reaching its low point in September. This trend reflects a transition into the autumn months, where softer winds may encourage leisurely outdoor activities, allowing residents and visitors alike to enjoy the serene beauty of Tsushima’s landscapes without the distraction of stronger gusts. As the seasons shift, the blend of tranquility and gentle breezes sets the stage for a contemplative atmosphere, giving way to the cooler months ahead.
Weather in Tsushima varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tsushima, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly different weather patterns. In September, temperatures soar with an average of 25°C (76°F) and maximums reaching up to 37°C (98°F), coupled with high humidity at 87%. However, this month also experiences significant rainfall, with 225 mm (8.9 in) of precipitation over 16 days. In contrast, January is much cooler, featuring a much lower average temperature of 5°C (41°F) and minimums plummeting to -5°C (23°F). This month sees only 52 mm (2.0 in) of precipitation over just 7 days, with slightly lower humidity levels at 82%. For more detailed insights, you can check Tsushima weather in January.
In comparing the weather between September and February, a stark contrast emerges. September boasts a warm average temperature of 25°C (76°F), with highs reaching up to 37°C (98°F) and significant humidity at 87%. However, it also experiences a fair amount of precipitation, totaling 225 mm (8.9 in) over around 16 days. In stark contrast, February presents a much cooler climate, with an average temperature of 6°C (42°F) and a maximum of 22°C (71°F). Precipitation is also much lower at 59 mm (2.3 in) over just 6 days, and humidity is relatively mild at 79%. For more detailed information, you can visit Tsushima weather in February.
September and March present markedly different weather conditions. In September, temperatures soar with a minimum of 12°C (54°F) and an average of 25°C (76°F), peaking at a sweltering 37°C (98°F). This month also experiences significant precipitation, with 225 mm (8.9 in) spread over 16 days, resulting in high humidity at 87%. In contrast, March is cooler, featuring a minimum temperature of -1°C (30°F), an average of 10°C (50°F), and a maximum temperature of 25°C (77°F). Rainfall is less abundant in March, amounting to 151 mm (6.0 in) over 11 days, with lower humidity at 74%. For more specifics about March weather, you can explore Tsushima weather in March.
The weather in September is notably warmer than in April, with average temperatures around 25°C (76°F) and maximums reaching up to 37°C (98°F), compared to April's average of 14°C (58°F) and a maximum of 29°C (84°F). Additionally, September experiences higher humidity at 87%, while April's humidity is a more comfortable 76%. Precipitation levels are also greater in September, with 225 mm (8.9 in) across 16 days, whereas April sees 163 mm (6.4 in) of rain over just 10 days. For more details on April's weather, you can visit Tsushima weather in April.
When comparing the weather in September and May, notable differences emerge in temperature and precipitation. September boasts a wider temperature range, with minimums reaching 12°C (54°F), an average of 25°C (76°F), and maximums soaring up to 37°C (98°F). In contrast, May features cooler conditions, starting at a minimum of 5°C (42°F), averaging 19°C (67°F), and peaking at 32°C (90°F). Although both months experience significant rainfall, September sees more precipitation at 225 mm (8.9 in) across 16 days, compared to May's 196 mm (7.7 in) over 11 days. Humidity levels are slightly higher in September at 87%, while May maintains a slightly lower humidity at 83%. For a more detailed look at May weather, you can check Tsushima weather in May.
When comparing the weather between September and June, we notice some interesting differences. In September, temperatures can range from a minimum of 12°C (54°F) to a maximum of 37°C (98°F), with an average of 25°C (76°F). This month also sees higher precipitation, totaling 225 mm (8.9 in) over 16 days. In contrast, June has a slightly cooler average temperature of 23°C (74°F), with maximum temperatures reaching 33°C (91°F) and a total precipitation of 196 mm (7.7 in) across 14 days. Despite these variations, both months share the same humidity level of 87%, leading to a consistently humid climate. For more detailed information on June weather, you can view the specifics here: Tsushima weather in June.
When comparing the weather in September and July, several notable differences emerge. September features a wider temperature range with minimums dropping to 12°C (54°F) and maximums reaching 37°C (98°F), while the average temperature is slightly lower at 25°C (76°F). In contrast, July presents warmer conditions with minimum temperatures around 20°C (67°F) and maximums peaking at 38°C (101°F), averaging 27°C (81°F). Precipitation levels are also higher in July, with 384 mm (15.1 in) recorded over 23 days compared to September's 225 mm (8.9 in) over 16 days. Humidity is slightly higher in July, at 93%, compared to September's 87%. For more detailed insights, you can check Tsushima weather in July.
In comparing the weather patterns of September and August, we see notable differences in temperature and precipitation. September experiences a minimum temperature of 12°C (54°F), which is significantly lower than August's minimum of 19°C (67°F), while the average temperature drops from 29°C (84°F) in August to 25°C (76°F) in September. The maximum temperatures are also similar, with September peaking at 37°C (98°F) and August at 38°C (100°F). Regarding precipitation, September has a total of 225 mm (8.9 in) over 16 days, slightly less than August's 253 mm (10.0 in) also over 16 days, but with an increase in humidity levels from 91% in August to 87% in September. For more detailed information about August weather, you can visit Tsushima weather in August.
In September, temperatures range from a minimum of 12°C (54°F) to a scorching maximum of 37°C (98°F), with an average of 25°C (76°F). The month also sees significant precipitation, totaling 225 mm (8.9 in) over 16 days, combined with a high humidity level of 87%. In contrast, October experiences cooler temperatures, with a minimum of 7°C (44°F), an average of 19°C (66°F), and a maximum of 32°C (90°F). While precipitation slightly increases to 246 mm (9.7 in) over 14 days, humidity decreases slightly to 85%. For more detailed information about the weather in October, you can visit Tsushima weather in October.
September and November present a stark contrast in weather patterns. In September, temperatures soar with an average of 25°C (76°F), peaking at a high of 37°C (98°F), while lingering humidity at 87% creates a sultry atmosphere. The month is also marked by significant rainfall, with 225 mm (8.9 in) of precipitation recorded over 16 days. In contrast, November brings a noticeable chill, with average temperatures dropping to 13°C (55°F) and a maximum of 24°C (76°F). Precipitation decreases dramatically to 61 mm (2.4 in) over only 5 days, and humidity levels slightly decline to 83%. For more insights into November's weather, visit Tsushima weather in November.
In comparing the weather between September and December, notable differences emerge. September boasts a much warmer temperature range, with minimums around 12°C (54°F) and maximums reaching up to 37°C (98°F), coupled with high humidity levels around 87%. This month also experiences significant rainfall, totaling 225 mm (8.9 in) over approximately 16 days. In contrast, December brings a stark change, with cooler temperatures that range from a minimum of -5°C (24°F) to a maximum of 20°C (68°F) and an average of just 7°C (45°F). Rainfall is considerably lighter at 68 mm (2.7 in) over only 7 days, while humidity slightly decreases to 83%. For further details, you can check Tsushima weather in December.
As September rolls into Tsushima, the weather begins to showcase its characteristic transition from summer’s heat to the cooler embrace of autumn. With a maximum temperature peaking at 37°C, the month still holds onto summer warmth, but an average of 25°C signals the onset of more comfortable days. The humidity levels remain high at 87%, creating a sticky atmosphere, while frequent rainfall, with 225 mm accumulated over 16 days, underscores the shift into the wet season. This blend of warmth, humidity, and precipitation makes September distinct from the drier, hotter months preceding it, inviting visitors to experience the lush green landscapes that emerge as summer fades. For more detailed insights, check out Tsushima Climate.