Last updated: August 28, 2025
In September, Ha Giang, Vietnam experiences a fascinating blend of climate conditions that charm visitors and locals alike. With maximum temperatures reaching up to 34°C (94°F) and an average of 25°C (78°F), the warmth invites exploration of the region’s stunning landscapes. However, the minimum temperature dips to 16°C (62°F), providing a cool respite during the evenings. This month sees a notable precipitation of 220 mm (8.7 in) spread across 22 days, fostering lush greenery but also requiring an umbrella for any outdoor adventures. Coupled with humidity levels at 81%, the weather creates a vibrant yet refreshing atmosphere, making September a unique time to experience the natural beauty and cultural richness of Ha Giang.
In September, Ha Giang experiences a pleasant shift in temperatures as summer transitions into autumn. With minimums around 16°C (62°F) and average highs reaching 34°C (94°F), the climate is mild yet warm enough to enjoy the vibrant landscapes. This month marks a slight decrease from the hotter summer months, revealing an average of 25°C (78°F), perfect for outdoor explorations amidst the stunning scenery. The cooler evenings invite a cozy atmosphere, making it an ideal time for travelers to experience the unique beauty of this mountainous region. As you navigate through the terraced rice fields and interact with local cultures, the comfortable weather enhances every adventure.
In September, Ha Giang continues to experience significant rainfall, with precipitation amounting to 220 mm (8.7 in) spread over 22 days. This marks a slight decrease from the wettest months of the summer but still reflects the region's transition towards drier fall conditions. The rainfall in September is comparatively lower than the preceding months of July and August, which recorded 330 mm (13.0 in) and 349 mm (13.7 in) respectively. However, this month maintains a notable level of moisture that contributes to the lush, green landscapes synonymous with Ha Giang. As the year progresses into October, a further decline to 196 mm (7.7 in) is expected, signalling the gradual shifting of the seasonal climate.
In September, Ha Giang, Vietnam experiences humidity at 81%, reflecting a slight decline from the peak levels of 90% seen in July and August. This month marks a transitional phase as the heavy moisture of summer begins to wane, paving the way for the drier months ahead. Notably, the humidity levels in September remain significantly higher compared to the earlier months of the year, which typically hover between 53% and 69%. As the region moves towards autumn, the air feels lush and vibrant, perfect for exploring the breathtaking landscapes without the oppressive heaviness of peak summer humidity.
In September, Ha Giang, Vietnam experiences an extreme UV Index of 13, marking a slight decrease from the peak of 14 observed in the previous months. With a burn time of just 10 minutes, outdoor enthusiasts should remain vigilant and take necessary precautions against sun exposure. This trend reflects the region's consistently high UV levels throughout the summer, where the index stays predominantly in the extreme category from May through August. As daylight begins to wane, September offers a reminder that sun safety remains paramount even as the seasons shift. For more detailed information on UV exposure in this beautiful region, visit Ha Giang UV Index.
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As September unfolds in Ha Giang, Vietnam, it brings with it an inviting 267 hours of sunshine. This radiant month follows a vibrant summer, characterized by peak sunshine in May with an impressive 290 hours, and maintains a warmth that lingers into early autumn. While the hours of sunlight in September show a slight dip from the bustling summer months, they still surpass the dimmer days of the early year. This trend illustrates a remarkable transition where the days grow shorter but the golden light continues to paint the picturesque landscapes, inviting travelers to bask in the breathtaking beauty of Ha Giang’s mountainous scenery. Just as nature prepares to transition into the cooler months, September remains a delightful chapter in the region's sun-kissed saga.
In Ha Giang, Vietnam, September emerges as a noteworthy month for sun-seekers, boasting a 34% chance of sunny weather. This marks a significant increase compared to the preceding months, where the likelihood of sunshine hovers around or below 15%. As summer transitions into autumn, the probability of clear skies rises notably, positioning September as one of the more favorable times to experience the region's breathtaking landscapes under the sun. In contrast, the months of January and December, while seeing a similar or slightly higher chance of sunshine, lack the expansive beauty of Ha Giang's fall scenery. Thus, for those yearning to enjoy vibrant autumn foliage basking in warm sunlight, September stands out as an ideal choice.
In Ha Giang, Vietnam, September marks a transitional period in daylight duration, with the sun gracing the region for about 12 hours each day. This month is part of a broader trend where daylight gradually increases from 10 hours in January to a peak of 13 hours in May through July, before gently tapering off again. Interestingly, the region maintains a consistent 12 hours of daylight from April through August and into September, underscoring a delightful balance of light and shade as the monsoon season starts to recede. As October approaches, daylight dips again, hinting at the changing seasons ahead. This rhythmic ebb and flow of daylight not only influences the daily life of Ha Giang's residents but also enhances the region's picturesque landscapes, painting them in vibrant hues throughout the year.
As September unfolds in Ha Giang, Vietnam, the winds whisper a gentle lull, averaging 0.9 m/s (2 mph)—a continuation of the calm observed through the summer months. This slight dip in wind speed is reflective of the region's warmer, tranquil atmosphere, where the high temperatures often stifle the breezy currents. The months leading up to September, particularly from January to May, showcase a more spirited ventilation, with averages peaking at 1.3 m/s (3 mph). However, the transition into the late summer and early autumn months marks a distinct ease, as the air grows still, mirroring the vibrant yet serene landscape that characterizes this enchanting corner of Vietnam.
Weather in Ha Giang varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ha Giang, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather tends to be much warmer and more humid compared to January, with average temperatures ranging from a minimum of 16°C (62°F) to a maximum of 34°C (94°F). The month also experiences significant rainfall, totaling around 220 mm (8.7 in) over 22 days, resulting in high humidity levels of 81%. In contrast, January offers a cooler climate, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 25°C (77°F), and lower precipitation levels of 124 mm (4.9 in) across 17 days, making it drier and less humid at 57%. For a closer look at what to expect during January, visit Ha Giang weather in January.
September and February present distinct weather patterns. In September, temperatures range from a minimum of 16°C (62°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). The month is characterized by significant rainfall, totaling 220 mm (8.7 in) across 22 days, coupled with high humidity levels of 81%. In contrast, February experiences cooler temperatures, with a minimum of 6°C (44°F) and a maximum of 27°C (82°F), averaging 16°C (61°F). Precipitation is lower, at 109 mm (4.3 in) over 18 days, and humidity drops to 67%. For more detailed insights into February weather, you can check Ha Giang weather in February.
When comparing the weather in September and March, a notable difference in temperature can be observed. September tends to be warmer with average temperatures around 25°C (78°F), while March is cooler, averaging 20°C (68°F). Additionally, the maximum temperatures in September reach up to 34°C (94°F), compared to a slightly lower maximum of 33°C (91°F) in March. Precipitation levels are also significant, with September receiving 220 mm (8.7 in) of rain over 22 days, whereas March has slightly less rainfall at 182 mm (7.2 in), also across 22 days. Humidity levels are higher in September at 81%, contrasting with March’s lower humidity of 58%. For more detailed insights on March weather specifically, you can check Ha Giang weather in March.
In comparing the weather of September and April, September experiences warmer average temperatures, with a minimum of 16°C (62°F) and a maximum reaching 34°C (94°F), while April's temperatures range from a cooler minimum of 10°C (49°F) to the same maximum of 34°C (94°F). Both months have a similar number of rainy days, each with precipitation occurring on 22 days, but September sees a higher total rainfall of 220 mm (8.7 in) compared to April's 206 mm (8.1 in). Additionally, September has significantly higher humidity at 81%, while April's humidity is a much more comfortable 53%. For more detailed insights on April's weather, you can check Ha Giang weather in April.
When comparing the weather in September and May, both months feature similar minimum temperatures, hovering around 16°C (60°F to 62°F). However, May typically experiences a higher maximum temperature, reaching up to 36°C (98°F), compared to September's peak of 34°C (94°F). Precipitation levels are notably higher in May, with 275 mm (10.8 in) falling over 27 days, while September sees 220 mm (8.7 in) spread across 22 days. Additionally, the humidity in September is more intense at 81%, compared to May's 69%. For a closer look at the specifics of May weather in Ha Giang, you can visit Ha Giang weather in May.
September and June exhibit distinct weather patterns. September enjoys temperatures ranging from a minimum of 16°C (62°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). The month also sees significant rainfall, totaling 220 mm (8.7 in) over 22 days, accompanied by humidity levels at 81%. In contrast, June typically presents warmer conditions, with temperatures varying from 20°C (68°F) to 36°C (98°F) and averaging 27°C (80°F). Rainfall is heavier during June, reaching 371 mm (14.6 in) over 25 days, along with slightly higher humidity at 83%. For more detailed information about June weather conditions in the region, visit Ha Giang weather in June.
When comparing the weather in September and July, notable differences emerge. September experiences a lower minimum temperature of 16°C (62°F) and a maximum of 34°C (94°F), with an average temperature of 25°C (78°F). In contrast, July is warmer, with minimum temperatures around 21°C (71°F), maximums reaching 36°C (97°F), and an average of 26°C (80°F). Precipitation is also higher in July, totaling 330 mm (13.0 in) over 28 days, compared to September's 220 mm (8.7 in) over 22 days. Additionally, July has a higher humidity level at 90%, compared to September's 81%. For more specific details on the weather during this time, you can check Ha Giang weather in July.
When comparing the weather between September and August, September tends to be slightly cooler, with average temperatures ranging from a minimum of 16°C (62°F) to a maximum of 34°C (94°F), while August experiences warmer conditions with a minimum of 22°C (72°F) and a maximum of 36°C (97°F). Additionally, September receives less precipitation, totaling 220 mm (8.7 in) over 22 days, compared to August, which has a significantly higher rainfall of 349 mm (13.7 in) across 27 days. Humidity levels also drop slightly in September to 81%, compared to August's 90%. For more details, you can check Ha Giang weather in August.
September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 16°C (62°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). The month is characterized by higher humidity at 81% and significant rainfall, experiencing 220 mm (8.7 in) over 22 days. In contrast, October sees a decline in temperatures, with minimums dropping to 12°C (55°F) and a max of 31°C (89°F), averaging 22°C (73°F). Precipitation also decreases slightly to 196 mm (7.7 in) across 19 days, and humidity lowers to 75%. For more details on October weather in Ha Giang, you can visit Ha Giang weather in October.
September and November present quite distinct weather patterns. In September, temperatures range from a minimum of 16°C (62°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). The month is quite rainy, experiencing 220 mm (8.7 in) of precipitation over 22 days, and humidity remains high at 81%. In contrast, November sees cool temperatures, with a minimum of 9°C (48°F) and a maximum of 28°C (83°F), averaging 19°C (67°F). The month is drier, featuring only 112 mm (4.4 in) of precipitation across 16 days, and lower humidity at 74%. For a more detailed look at the weather in November, you can visit Ha Giang weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a minimum of 16°C (62°F) to a scorching maximum of 34°C (94°F), with an average of 25°C (78°F). The month is marked by high humidity at 81% and substantial rainfall, totaling 220 mm (8.7 in) over 22 days. In contrast, December offers a cooler climate with temperatures fluctuating between a minimum of 2°C (37°F) and a maximum of 26°C (79°F), averaging 15°C (60°F). Precipitation drops significantly to 98 mm (3.9 in) across 16 days, and humidity decreases to 69%. For more details on December weather, visit Ha Giang weather in December.
As September unfolds in Ha Giang, the weather presents a remarkable transition from the preceding months. Temperatures begin to cool down, with a comfortable average around 25°C, allowing for pleasant outdoor explorations amidst the stunning landscapes. However, this month also sees an increase in humidity and a significant amount of rainfall, with precipitation affecting outdoor activities on many days. The lush green scenery brought by the rains enhances the beauty of the region, making it a captivating time for nature lovers. For more details on Ha Giang's unique climate patterns, visit Ha Giang Climate.