Last updated: August 28, 2025
Experience the weather in Thanh Hoa, Vietnam this September, where you can expect warm temperatures that range from a comfortable 23°C (74°F) to a sizzling 37°C (99°F). On average, the temperature hovers around 29°C (84°F), making it perfect for both outdoor adventures and leisurely activities. Be prepared for frequent rainfall, as the region receives about 252 mm (9.9 in) across 21 rainy days this month, contributing to a high humidity level of 84%. Whether you're exploring local sights or relaxing by the coast, September's weather offers a distinctive tropical experience that is uniquely Thanh Hoa.
In September, Thanh Hoa, Vietnam, welcomes a gradual easing of summer's heat. With minimum temperatures around 23°C (74°F) and an average high of 29°C (84°F), the month offers a comfortable transition, particularly compared to the sweltering highs of May and June. The maximum temperature peaks at 37°C (99°F), indicating lingering warmth but significantly cooler than the peak summer months. This blend of warmth and increasing humidity makes September a delightful time to experience the region's vibrant landscapes before the cooler temperatures of autumn set in. As the month progresses, the gradual drop in highs prepares residents and visitors alike for the more temperate climate that October brings.
In September, Thanh Hoa, Vietnam experiences a significant rainfall, with 252 mm (9.9 in) recorded over 21 days. This month marks a continuation of the heavy precipitation trend established in the preceding months, particularly from July and August, which saw their highest rainfall totals of the year. September's rainfall dips slightly compared to August's peak, yet it remains substantial, showcasing the region's transition from the intense summer storms towards the tail end of the monsoon season. The frequency of rainy days also peaks this month, reflecting an atmosphere rich with moisture that nourishes the lush vegetation, while also hinting at the upcoming shift towards drier months ahead.
September in Thanh Hoa, Vietnam, experiences a notable humidity level of 84%, reflecting a slight drop from the peak months of July and August, both at 90%. As the region transitions from the sweltering summer, the humidity begins to ease, though it remains significantly higher than the earlier months of the year, such as April with just 70%. This trend highlights the tail end of the monsoon season, where moisture in the air remains prevalent but starts to pave the way for autumn's drier conditions. Overall, September continues to showcase Thanh Hoa’s characteristic tropical climate, balancing warmth with lingering humidity before the gradual decline into the cooler months ahead.
In September, Thanh Hoa, Vietnam experiences one of its highest UV Index levels, reaching 14 on the scale categorized as extreme. This consistent intensity mirrors the preceding months of July and August, where similar conditions prevail. As the days remain bright and sunny, it's essential to note that the burn time is sharply reduced to just 10 minutes, urging residents and visitors alike to take necessary precautions to shield themselves from potential skin damage. The trend of such elevated UV levels highlights the need for sun safety awareness during this time of year. For more detailed information, check out Thanh Hoa UV Index.
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In September, Thanh Hoa, Vietnam basks in 280 hours of sunshine, a continuation of the region's late-summer glow. As the year transitions from the vibrant peak of summer, where May dazzles with the most sunlight at 311 hours, September's days remain bright but begin to ease, reflecting the gradual shift into autumn. This month marks a slight decline from the soaring hours of the peak summer months, like June and July, yet maintains a robust amount of sunshine compared to earlier in the year. The sun-drenched days of September beckon outdoor enthusiasts to enjoy the warm, inviting climate before the cooler months set in, embodying the vibrant transition of seasons in this beautiful region.
In September, the likelihood of sunny weather in Thanh Hoa, Vietnam stands at 21%, reflecting a modest chance of clear skies. This period, nestled between the summer's peak humidity and the upcoming autumn, generally sees a slight dip in sunshine compared to earlier months like February and November, which boast percentages above 30%. Interestingly, September's figures follow a trend of diminishing sun exposure during the late summer months, culminating in notably low chances in August at just 13%. As the region transitions into a cooler season, the sun starts to make more frequent appearances, although travelers should still anticipate a fair share of cloudy days.
In September, Thanh Hoa, Vietnam enjoys a pleasing 12 hours of daylight, marking a transition into the cooler months. This duration mirrors the daylight experienced in the preceding August, highlighting a gradual shift as summer begins to wane. The trend of increasing daylight from January—when days are only 11 hours long—peaks in the heart of summer with 13 hours in May, June, and July. As autumn sets in after September, daylight starts to decrement again, transitioning towards the shorter days of October and November. This cyclical pattern not only underscores the natural rhythms of the seasons but also enhances the beauty of Thanh Hoa as it moves gracefully from the warmth of summer towards the tranquility of fall.
In September, Thanh Hoa experiences a gentle lull in its breezes, with an average wind speed of just 1.8 m/s (4 mph). This marks a noticeable dip compared to the more spirited winds of the summer months, where speeds frequently climbed above 3 m/s. As the region transitions from the heat of summer into the autumn season, the softer winds offer a tranquil atmosphere that contrasts with the robust gusts of October, which see a resurgence to 3.8 m/s (9 mph). This pattern highlights a climatic rhythm in Thanh Hoa, where the wind’s whispers of September pave the way for the vibrant energy of fall, inviting both respite and anticipation for the coming changes.
Weather in Thanh Hoa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Thanh Hoa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by much warmer temperatures, with a minimum of 23°C (74°F) and an average high of 29°C (84°F), peaking at a scorching 37°C (99°F). This month experiences significant rainfall, totaling 252 mm (9.9 in) over 21 days, contributing to a high humidity level of 84%. In contrast, January sees much cooler conditions, starting with a minimum temperature of 9°C (49°F) and an average of 19°C (66°F), with highs reaching a mild 29°C (84°F). Rain is minimal in January, with only 35 mm (1.4 in) over just 5 days, and humidity drops to 74%. For more details on January weather, feel free to check Thanh Hoa weather in January.
September and February showcase distinct weather characteristics. September is hot and humid, with average temperatures soaring to 29°C (84°F) and reaching highs of 37°C (99°F). It also sees a significant amount of rainfall, totaling 252 mm (9.9 in) over 21 days, contributing to a high humidity level of 84%. In contrast, February offers a much cooler climate, with average temperatures around 19°C (67°F) and maximums peaking at 30°C (87°F). The month is relatively dry, receiving only 21 mm (0.8 in) of precipitation over just 4 days and exhibiting lower humidity levels at 77%. For a more detailed look at February weather, you can check out Thanh Hoa weather in February.
The weather in September and March presents a stark contrast in terms of temperature, precipitation, and humidity. In September, temperatures range from a minimum of 23°C (74°F) to a scorching maximum of 37°C (99°F), with an average of 29°C (84°F). This month is also characterized by heavy rainfall, receiving a total of 252 mm (9.9 in) over 21 days and maintaining a high humidity level of 84%. In comparison, March enjoys milder conditions, with temperatures varying from a minimum of 15°C (60°F) to a maximum of 35°C (95°F) and averaging 23°C (73°F). The precipitation in March is significantly lower at 42 mm (1.7 in) over just 9 days, and the humidity is also reduced to 74%. For those interested in more details about the weather in March, you can visit Thanh Hoa weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), with an average of 29°C (84°F). This month also experiences significant rainfall, with 252 mm (9.9 in) of precipitation spread over 21 days and high humidity at 84%. In contrast, April boasts milder temperatures, ranging from 16°C (62°F) to 39°C (102°F), with an average of 25°C (77°F). This month sees considerably less rainfall, with only 77 mm (3.0 in) over 10 days, and a lower humidity level of 70%. For more detailed information about the weather conditions in April, you can visit Thanh Hoa weather in April.
In comparing the weather of September and May, we see that both months have similar average temperatures of 29°C (84°F), but May tends to be hotter with a maximum of 41°C (106°F) compared to September's maximum of 37°C (99°F). September experiences significantly higher precipitation, with 252 mm (9.9 in) falling over 21 days, while May receives 166 mm (6.5 in) over just 14 days. Additionally, September has higher humidity at 84%, compared to May's 78%, making September feel more muggy despite the average temperatures being the same. For a closer look at May's weather specifics, you can refer to Thanh Hoa weather in May.
When comparing the weather in September and June, it is clear that June tends to be hotter, with average temperatures reaching 32°C (89°F) and maximums soaring up to 41°C (107°F). In contrast, September has a slightly lower average temperature of 29°C (84°F) and max temperatures peaking at 37°C (99°F). Additionally, September experiences significantly more precipitation, with 252 mm (9.9 in) over 21 days, compared to June's 109 mm (4.3 in) across just 10 days. Humidity levels are comparable, with September at 84% and June at 82%. For more details on June weather, you can visit Thanh Hoa weather in June.
In comparing the weather of September and July, we can observe notable differences in temperature and precipitation. September typically experiences slightly cooler temperatures, with a minimum of 23°C (74°F) and an average of 29°C (84°F), compared to July, which has a minimum of 25°C (78°F) and an average of 31°C (87°F). However, July is the hotter month overall, with a maximum temperature reaching up to 40°C (105°F) compared to September's peak of 37°C (99°F).
When it comes to rainfall, July receives more precipitation at 302 mm (11.9 in) over 18 days, whereas September has 252 mm (9.9 in) spread over 21 days, indicating rain is more frequent in September, although it is generally lighter. Additionally, humidity levels are slightly higher in July at 90%, compared to 84% in September. For more detailed insights on July weather, you can refer to Thanh Hoa weather in July.
In comparing the weather of September to August, we can see a slight decrease in temperature, with September's minimum at 23°C (74°F) and August's at 25°C (77°F). The average temperatures are also marginally lower in September at 29°C (84°F) compared to 30°C (86°F) in August. However, September experiences slightly more rainfall, accumulating 252 mm (9.9 in) over 21 days, while August records 312 mm (12.3 in) over just 20 days. Humidity remains high in both months, yet it is slightly lower in September at 84%, versus 90% in August. For more detailed insights, you can visit Thanh Hoa weather in August.
September typically experiences warmer temperatures, with averages reaching up to 29°C (84°F) and maximums often hitting 37°C (99°F). In contrast, October sees a decline in temperature, averaging around 25°C (78°F) and peaking at 34°C (93°F). Both months are characterized by significant rainfall, with September receiving 252 mm (9.9 in) over 21 days, while October presents a slightly drier scenario with 250 mm (9.8 in) of precipitation over 17 days. Humidity levels also remain high, though October's is a tad lower at 81% compared to September's 84%. For more details on October weather specifics, you can visit Thanh Hoa weather in October.
In September, the weather is markedly warmer, with minimum temperatures around 23°C (74°F) and an average of 29°C (84°F), reaching highs of 37°C (99°F). This month also experiences significant rainfall, totaling 252 mm (9.9 in) over 21 days, coupled with high humidity at 84%. In contrast, November brings much cooler conditions, with minimum temperatures dropping to 14°C (57°F) and an average of 23°C (74°F). The maximum temperature in November is also lower at 31°C (88°F), and it sees a substantial decrease in precipitation, totaling only 73 mm (2.9 in) over 9 days. Humidity in November is slightly lower at 78%, providing a more comfortable atmosphere. For more details, check out Thanh Hoa weather in November.
September weather in Thanh Hoa is characterized by much warmer temperatures, with a minimum of 23°C (74°F) and an average of 29°C (84°F), reaching highs of up to 37°C (99°F). This month experiences significant rainfall, totaling 252 mm (9.9 in) over 21 days, contributing to a high humidity level of 84%. In contrast, December brings cooler weather, with temperatures ranging from a minimum of 11°C (51°F) to an average of 19°C (67°F) and a maximum of 30°C (85°F). Precipitation drops dramatically to just 38 mm (1.5 in) over only 5 days, and humidity decreases slightly to 78%. For a more detailed look at December weather in Thanh Hoa, visit Thanh Hoa weather in December.
As September unfolds in Thanh Hoa, expect a noticeable shift in weather dynamics compared to the preceding months. With temperatures averaging a warm 29°C (84°F), the heat remains significant, but it is complemented by increased humidity levels reaching 84%, creating a muggy atmosphere. The frequent rains this month, totaling approximately 252 mm over 21 days, mark a sharp contrast to the drier summer months, infusing the region with lush greenery and a vibrant landscape. While you may still encounter the summer warmth, the daily downpours remind you that the city is transitioning toward its wetter season. For more insights on Thanh Hoa’s weather patterns, explore Thanh Hoa Climate.