Last updated: August 28, 2025
In September, Ha Dong, Vietnam, experiences a warm and humid climate, characterized by a maximum temperature soaring to 37°C (99°F), while the average temperature settles at a comfortable 28°C (83°F). With a minimum temperature of 21°C (71°F), the month offers a range of pleasant conditions for visitors. However, the region also faces significant rainfall, totaling 222 mm (8.7 in), spread over 21 days, emphasizing the need for preparations against the frequent showers. The high humidity level of 82% adds to the tropical atmosphere, making this month a vivid experience of Vietnam’s dynamic weather.
In September, Ha Dong, Vietnam, experiences a noticeable transition as summer gives way to the early hints of autumn. With minimum temperatures around 21°C (71°F) and highs reaching up to 37°C (99°F), the month remains warm but begins to gradually cool compared to the intense heat of the preceding months. The average temperature settles at a comfortable 28°C (83°F), making it an ideal time for outdoor activities and exploration. This decline in maximum temperatures from the peak summer months highlights a shift in the seasonal rhythm, paving the way for the refreshing cooler weather of October. As September unfolds, residents and visitors alike can enjoy a vibrant atmosphere, with the city's lush landscapes beginning to shift hues in anticipation of fall.
In September, Ha Dong experiences a significant transition in weather patterns, with precipitation reaching 222 mm (8.7 in) over 21 rainy days. This marks a notable decrease from the preceding month of August, which recorded a hefty 378 mm (14.9 in), yet remains substantial compared to earlier months. The trend indicates a consistent peak in rainfall during the summer months, particularly in July and August, followed by a moderate dip in September. As the region shifts towards the autumn season, residents can expect slightly less intense rain but should still be prepared for frequent downpours. This period serves as a reminder of the dynamic weather that defines Ha Dong, as it balances between the heavy summer deluge and the drier months ahead.
In September, Ha Dong, Vietnam, experiences humidity levels averaging 82%, which marks a slight decrease from the summertime peaks of July and August, where humidity reached a steep 90% and 89% respectively. This transitional month signals the tail end of the intense summer heat, as moisture in the air begins to recede, paving the way for the milder conditions of October. Notably, September remains one of the more humid months, a trend that continues from the summer. This persistent humidity, typical for many Southeast Asian climates, plays a crucial role in the region's lush scenery and vibrant ecosystems. As the year progresses, humidity gradually declines towards 77% in October, indicating a shift towards drier conditions as the region approaches the cooler months.
As summer transitions into autumn in Ha Dong, Vietnam, the UV Index remains notably high in September, peaking at 13—a level classified as extreme. This trend follows a peak in August, also rated at 13, indicating that the risk of harm from unprotected sun exposure is substantial. With a burn time of just 10 minutes, it’s crucial for residents and visitors alike to take necessary precautions against harmful UV rays. Looking back at the year, a pattern emerges with consistently extreme levels from March through October, making sun safety a year-round priority. To stay updated and protect yourself, check out the latest Ha Dong UV Index.
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As September unfolds in Ha Dong, Vietnam, the region basks in 267 hours of sunshine, marking a delightful transition from the vibrant summer months. After enjoying the peak brightness of 280 hours in May and the consistent warmth of 275 to 274 hours through June and July, September retains a generous amount of sunlight, perfect for outdoor activities. While slightly lower than the sun-soaked days of summer, this month's sunshine promises a harmonious blend of warmth and breezes as the foliage begins to shift towards autumn. The overall trend reflects a gradual decline in sunlight hours as the year progresses, yet the 259 hours seen in August suggests that summer's lingering embrace still captivates visitors and locals alike.
In September, Ha Dong, Vietnam, experiences a notable 23% chance of sunny weather, making it a month of transition as the region shifts from the summer heat to the more temperate autumn. This percentage is slightly higher than June and August, which are marked by their significant cloud cover, yet lower than the promising conditions of October. Interestingly, the month of September sits comfortably between the drier months ahead, like November with 36%, and the summer’s relentless sun, suggesting that it may offer a blend of sunny days and refreshing rainfall. As the landscape begins to freshen up with the onset of the fall season, visitors might find this the perfect time to explore the charm of Ha Dong amidst a backdrop of modest sun.
In September, Ha Dong, Vietnam enjoys a pleasant 12 hours of daylight, marking a transition into the cooler months. This duration mirrors the previous month's sunlight, reflecting a gradual decline from the summer peak of 13 hours found in June and July. As the year progresses, daylight hours balance out, tapering off to 11 hours by October. This steady shift showcases the region's climate rhythm, where vibrant daytime gradually gives way to longer nights, inviting a shift in both lifestyle and nature as autumn approaches.
As September arrives in Ha Dong, Vietnam, the wind takes on a gentler demeanor, with an average speed of 1.5 m/s (3 mph), marking the lowest point in the year. This decline follows a summer of slightly higher breezes, peaking at 2.8 m/s in May, before gradually tapering off. The transition into autumn brings a whisper of change, contrasting with the lively gusts of preceding months. Notably, the trend of diminishing wind speeds continues into the cooler months, as October bounces back with a brisk 2.7 m/s (6 mph). This seasonal ebb and flow not only reflects nature’s rhythm but also sets a serene backdrop as Ha Dong embraces the charm of autumn, inviting residents and visitors alike to savor the more tranquil September atmosphere.
Weather in Ha Dong varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ha Dong, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is significantly warmer, with temperatures ranging from a minimum of 21°C (71°F) to a scorching maximum of 37°C (99°F) and an average of 28°C (83°F). This month also experiences high humidity levels at 82% and frequent rainfall, totaling 222 mm (8.7 in) over 21 days. In contrast, January offers a cooler climate, with temperatures varying from a low of 8°C (46°F) to a high of 29°C (84°F), averaging around 18°C (65°F). The precipitation is much lower at 58 mm (2.3 in) over just 8 days, and humidity drops to 66%. For more details on the specific weather conditions during this month, check out Ha Dong weather in January.
When comparing the weather in September and February, it's clear that September is significantly warmer and wetter. September boasts a minimum temperature of 21°C (71°F) and an average of 28°C (83°F), with a maximum reaching a sweltering 37°C (99°F). In contrast, February offers a much cooler experience, with temperatures ranging from a minimum of 9°C (48°F) to an average of 19°C (66°F) and a maximum of 31°C (88°F). Additionally, September sees heavy precipitation with 222 mm (8.7 in) across 21 days, while February has only 41 mm (1.6 in) of rain over just 7 days. The humidity also differs, with September maintaining a higher level at 82%, compared to February’s 71%. For more detailed information, you can check Ha Dong weather in February.
September and March display contrasting weather patterns. In September, temperatures range from a minimum of 21°C (71°F) to a scorching maximum of 37°C (99°F), with an average of 28°C (83°F), accompanied by high humidity at 82%. This month also experiences significant rainfall, totaling 222 mm (8.7 in) over 21 days. In contrast, March features milder temperatures, with a minimum of 14°C (57°F), an average of 22°C (73°F), and a maximum of 34°C (94°F). Precipitation in March is considerably lower, at 65 mm (2.5 in) over 14 days, and humidity decreases to 69%. For more details on March weather, visit Ha Dong weather in March.
In September, temperatures begin to climb, with minimums averaging 21°C (71°F) and maximums reaching up to 37°C (99°F), resulting in an average of 28°C (83°F). The month is marked by high humidity at 82% and significant rainfall, with approximately 222 mm (8.7 in) of precipitation over 21 days. In contrast, April experiences milder weather, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 36°C (97°F), and an average of 25°C (77°F). The humidity is notably lower at 64%, and rainfall is less frequent, totaling around 147 mm (5.8 in) over 14 days. For more detailed insights on April weather, visit Ha Dong weather in April.
In comparing the weather of September and May, both months showcase warm average temperatures, hovering around 28°C (83°F). However, September tends to have slightly higher minimum temperatures of 21°C (71°F) compared to May's 19°C (67°F). Additionally, May can reach a maximum of 39°C (103°F), which is higher than September's peak of 37°C (99°F). Precipitation levels are also notable; September experiences more rainfall with 222 mm (8.7 in) over 21 days, while May sees less, with 188 mm (7.4 in) across 17 days. The humidity is higher in September at 82%, whereas in May, it sits at a more comfortable 73%. For more detailed insights, check out Ha Dong weather in May.
In comparing the weather of September and June, September tends to be slightly cooler, with temperatures ranging from a minimum of 21°C (71°F) to a maximum of 37°C (99°F), and an average of 28°C (83°F). In contrast, June is typically warmer overall, with minimum temperatures around 23°C (74°F), an average of 31°C (87°F), and maximums reaching up to 40°C (105°F). While September experiences higher precipitation at 222 mm (8.7 in) over 21 days, June has slightly less rainfall at 189 mm (7.4 in), occurring across 15 days. Both months exhibit high humidity levels close to 82% in September and 81% in June. For a more detailed look at June's weather specifics, you can check Ha Dong weather in June.
When comparing the weather in September and July, it's clear that July tends to be hotter with an average temperature of 30°C (86°F) compared to September's average of 28°C (83°F). Additionally, July boasts a higher maximum temperature of 39°C (103°F), while September peaks at 37°C (99°F). However, September experiences slightly less rainfall, with 222 mm (8.7 in) compared to July's 260 mm (10.2 in), despite both months having precipitation on about 21 days. Furthermore, humidity levels are higher in July at 90% compared to 82% in September, making the former feel more oppressive. For a more detailed look at July's weather, you can visit Ha Dong weather in July.
When comparing the weather in September to that of August, we see some notable differences. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 37°C (99°F), with an average temperature of 28°C (83°F). This month also experiences a significant amount of precipitation, totaling 222 mm (8.7 in) over 21 rainy days, and the humidity is around 82%. In contrast, August is slightly warmer, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 39°C (102°F) and an average of 29°C (85°F). The rainfall in August is significantly higher at 378 mm (14.9 in) over 22 days, contributing to a higher humidity level of 89%. For more detailed information, you can refer to Ha Dong weather in August.
In September, the weather is notably warmer, with minimum temperatures around 21°C (71°F) and average highs reaching up to 37°C (99°F). The month experiences significant rainfall, totaling 222 mm (8.7 in) over 21 days, coupled with high humidity levels at 82%. In contrast, October brings cooler temperatures, with a minimum of 17°C (63°F) and an average high of 34°C (94°F). Although the total precipitation increases to 279 mm (11.0 in), it falls over fewer days—just 16. Humidity also decreases slightly to 77%, making October feel more comfortable overall. For more details on the weather in October, you can check Ha Dong weather in October.
September and November exhibit contrasting weather patterns. In September, temperatures are significantly warmer, with a minimum of 21°C (71°F) and an average high reaching 37°C (99°F). This month also experiences notable precipitation, totaling 222 mm (8.7 in) over 21 days, coupled with high humidity levels of 82%. In contrast, November sees a drop in temperatures, with a minimum of 14°C (57°F) and an average maximum of 33°C (92°F). The rainfall is considerably reduced to 48 mm (1.9 in) across just 8 days, and humidity levels decrease to 72%. For more details on November weather, check out Ha Dong weather in November.
September and December present stark contrasts in weather. In September, temperatures soar, with an average of 28°C (83°F) and highs reaching up to 37°C (99°F), creating a hot and humid environment with significant rainfall of 222 mm (8.7 in) over 21 days. In contrast, December offers much cooler temperatures, with an average of 18°C (65°F) and maximums around 31°C (87°F). Precipitation drastically decreases to just 41 mm (1.6 in) spread over 7 days, and humidity drops to 71%. This notable shift from the sweltering heat of September to the milder December climate significantly affects daily life and activities. For more detailed weather insights, you can check Ha Dong weather in December.
As summer gives way to autumn, September in Ha Dong brings a notable shift in climate. With average temperatures lingering around a comfortable 28°C, the intense heat of the preceding months gives way to more moderate conditions. However, September is characterized by its high humidity and significant rainfall, with about 21 days seeing precipitation that totals 222 mm. This dampness not only cools the air but also enhances the lush greenery of the region. Unlike the drier, hotter months, September's weather invites a refreshing nature, making it a unique time to explore the beauty of Ha Dong. For more detailed information, visit Ha Dong Climate.