Last updated: August 28, 2025
In September, Phat Diem, Vietnam experiences a warm and humid climate, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 35°C (95°F), averaging around 29°C (84°F). This month is characterized by significant precipitation, with nearly 274 mm (10.8 in) of rainfall over 21 days, leading to an humidity level of 84%. As the rain nourishes the lush landscapes, visitors can expect a vibrant display of nature, making Phat Diem a unique destination despite the wet weather.
September in Phat Diem, Vietnam, marks a significant transition in the weather as summer begins to wane. With temperatures averaging around 29°C (84°F), this month offers a warm yet comfortable climate, making it a delightful time for travelers. The minimum temperature remains relatively mild at 24°C (75°F), while the maximum peaks at 35°C (95°F). Compared to the sweltering heat of July and August, September starts to show signs of relief, with temperatures gradually dropping as the region transitions into fall. The warmth continues to embrace the landscape, allowing visitors to explore Phat Diem’s stunning architecture and natural beauty in an inviting atmosphere.
In September, Phat Diem experiences a significant rainfall of 274 mm (10.8 in), indicating a continuation of the monsoon season's intensity that peaks in the preceding months of July and August. With 21 days of precipitation, the city sees almost every day touch by rainfall, contributing to the overall wet climate of this time. This pattern of heavy summer rains not only enriches the surrounding landscape but also prepares the region for the slightly decreased precipitation in October, dropping just to 276 mm. Overall, September serves as a pivotal month in the rainfall cycle, highlighting the transition from the peak rainy season to a more moderate fall.
In September, humidity in Phat Diem hovers around 84%, marking a slight decrease from the peak months of July and August, which both experienced a high of 90%. This late summer dip suggests a gradual transition into the drier fall season, as humidity levels begin to stabilize after months of oppressive moisture. Overall, the humidity trend in Phat Diem showcases a clear pattern where the summer months exhibit significantly higher levels, while cooler months see a gradual decline, making September a touch less humid yet still relatively moist compared to the early parts of the year. Such variability underscores the region's tropical climate, characterized by its sultry summers and milder autumns.
In September, Phat Diem continues to experience an extreme UV Index of 13, necessitating a cautious approach to sun exposure with a burn time as short as 10 minutes. This month marks a slight decline from the peak values seen in July and August, which both recorded a UV Index of 14. As the year transitions, it’s evident that the summer months pose the highest risk, with March through August showcasing an escalating UV intensity that peaks in the mid-summer. As we move toward October, the UV Index will gradually decrease, yet it remains crucial for residents and visitors to remain vigilant. For more insights on UV levels and safety tips, check out the detailed report on Phat Diem UV Index.
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September in Phat Diem, Vietnam, welcomes a delightful transition as the summer sun gradually gives way to autumn hues. With 282 hours of sunshine, September stands out as a month where bright days still abound, although slightly less than the peak of 313 hours in May. The trend of decreasing sunlight continues into October, suggesting that the vibrant days of summer are gently waning. Nonetheless, September offers a perfect balance, with ample sunshine for outdoor adventures and exploration, making it an ideal time for visitors to experience the charm of this picturesque coastal town before the cooler months set in.
In September, the likelihood of sunny weather in Phat Diem, Vietnam stands at approximately 22%, indicating a noticeable dip compared to the earlier months of the year. This trend is consistent with the overall pattern observed from June to August, when the chances of sunshine drop significantly, peaking at only 14% in August. As the wet season continues, September remains one of the less favorable months for sun-seekers, with the probability of clear skies noticeably lower than in the preceding months like January and February, which boast higher chances of sun at 35% and 45% respectively. Overall, while September may not offer ideal sunny weather, it reflects the transitional phase of the season, paving the way for slightly brighter days ahead in October and November.
In Phat Diem, Vietnam, the daylight duration exhibits a captivating seasonal rhythm, peaking in the vibrant months of May through July with 13 hours of sunshine, perfect for embracing outdoor adventures. As summer transitions to autumn, daylight begins to wane, dropping to 12 hours in September—a gentle reminder that change is in the air. This gradual decline continues into the later months, with 11 hours in October and November, finally tapering off to 10 hours by December. This pattern highlights how the changing seasons gracefully influence daily life, offering a blend of bright, sunlit days followed by the softer ambiance of shorter daylight hours.
In September, Phat Diem experiences a noticeable dip in wind activity, with average wind speeds dropping to just 2.3 m/s (5 mph). This marks the slowest winds of the year, following a gradual increase in the warmer months, peaking at 4.4 m/s (10 mph) in May. As summer transitions into autumn, the gentle breezes of September create a tranquil atmosphere, contrasting sharply with the more vigorous winds of October, which escalate to 4.8 m/s (11 mph). This seasonal rhythm not only influences the local climate but also shapes the daily lives of residents, who enjoy the quieter, more serene conditions before the winds pick up again.
Weather in Phat Diem varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Phat Diem, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather, reflecting the transition from late summer to winter. In September, temperatures are much warmer, ranging from a minimum of 24°C (75°F) to a maximum of 35°C (95°F), with an average of 29°C (84°F). This month also experiences high humidity at 84% and significant rainfall of 274 mm (10.8 in) over 21 days. In contrast, January brings a cooler climate, with temperatures dipping to a minimum of 9°C (49°F) and peaking at 26°C (79°F), averaging around 19°C (66°F). Rainfall in January is substantially lower at 40 mm (1.6 in) over just 7 days, and humidity decreases to 74%. For more detailed information on January weather specifics, you can visit Phat Diem weather in January.
September and February present strikingly different weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 35°C (95°F), with an average of 29°C (84°F). This month also experiences significant rainfall, totaling 274 mm (10.8 in) over 21 days, alongside high humidity at 84%. In contrast, February offers a much cooler climate, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 27°C (82°F), averaging 19°C (66°F). Precipitation drops dramatically to only 24 mm (1.0 in) across just 5 days, and humidity hovers at a lower 77%. For more detailed weather insights, you can check Phat Diem weather in February.
When comparing the weather in September and March, notable differences emerge. September typically experiences warmer temperatures, with averages reaching around 29°C (84°F) and maximums of 35°C (95°F), while March sees cooler conditions, averaging 22°C (72°F) with a maximum of 31°C (89°F). Additionally, September is characterized by high humidity levels at 84% and significant rainfall, totaling 274 mm (10.8 in) over 21 days. In contrast, March has lower humidity at 74% and considerably less precipitation, accumulating only 49 mm (1.9 in) across 10 days. For more detailed weather insights in March, you can explore Phat Diem weather in March.
In comparing the weather between September and April, September boasts warmer average temperatures, with a minimum of 24°C (75°F) and an average of 29°C (84°F), while April's temperatures are cooler, with a minimum of 16°C (62°F) and an average of 24°C (76°F). Both months can reach a maximum of 35°C (95°F), but September is characterized by significantly higher precipitation, totaling 274 mm (10.8 in) over 21 days, compared to April's 86 mm (3.4 in) spread over just 10 days. Additionally, September has a higher humidity level at 84%, whereas April's humidity is more moderate at 70%. For more details, you can check Phat Diem weather in April.
In comparing the weather of September and May, September tends to be more humid and rainy. Typically, September experiences minimum temperatures of 24°C (75°F) and averages around 29°C (84°F), with maximums reaching up to 35°C (95°F). The month also sees considerable rainfall, averaging 274 mm (10.8 in) over about 21 days. In contrast, May features slightly cooler, yet still warm temperatures, with minimums of 20°C (68°F), an average of 28°C (83°F), and maximums that can soar to 37°C (99°F). Additionally, May is generally wetter than September, but with less overall precipitation at 156 mm (6.1 in) over about 14 days. The humidity is also less intense in May at 78% compared to September's 84%. For more specific details on May weather, you can refer to Phat Diem weather in May.
In comparing the weather of September and June, it is evident that both months boast warm temperatures, but June is typically hotter on average. June features a minimum temperature of 24°C (75°F), an average of 31°C (88°F), and a maximum of 38°C (100°F), while September has a slightly lower average temperature of 29°C (84°F) with maximums reaching 35°C (95°F). Additionally, September is considerably wetter, with precipitation of 274 mm (10.8 in) over 21 days compared to June's 109 mm (4.3 in) over just 11 days. Humidity levels are similar, hovering around 84% in September and 82% in June, making both months feel quite muggy. For a more detailed look at June weather, you can check out Phat Diem weather in June.
When comparing the weather in September and July, we see a slight variation in temperatures and humidity levels. In September, the minimum temperature is 24°C (75°F), with an average of 29°C (84°F) and a maximum of 35°C (95°F). July, on the other hand, starts with a slightly higher minimum temperature of 25°C (78°F) and averages 30°C (86°F), peaking at 37°C (99°F).
Both months experience significant rainfall, with September recording 274 mm (10.8 in) across 21 days, while July sees a bit more precipitation at 303 mm (11.9 in) over 18 days. The humidity is also higher in July at 90% compared to 84% in September, making it feel a bit more uncomfortable during that month. For more detailed weather information, you can check Phat Diem weather in July.
In comparing the weather of September and August, September exhibits slightly milder temperatures, with average highs of 35°C (95°F) compared to August's peak of 36°C (98°F). The minimum temperature in September is 24°C (75°F), while August starts at a higher 25°C (77°F). Additionally, September received 274 mm (10.8 in) of precipitation over 21 days, which is less than August's 338 mm (13.3 in) during the same number of days. This change brings a slight decrease in humidity as well, with September averaging 84% compared to August's 90%. For more detailed insights, you can refer to the Phat Diem weather in August.
In comparison to September, October experiences a noticeable drop in temperatures, with minimums decreasing from 24°C (75°F) to 19°C (66°F) and an average temperature decline from 29°C (84°F) to 25°C (78°F). The maximum temperature also slightly decreases from 35°C (95°F) to 33°C (91°F). While precipitation levels in October are similar, with 276 mm (10.9 in) falling over 18 days compared to September's 274 mm (10.8 in) over 21 days, the humidity levels are slightly lower in October at 81%, compared to 84% in September. For more detailed weather information, you can check Phat Diem weather in October.
In September, the weather is characterized by higher temperatures, with a minimum of 24°C (75°F) and an average of 29°C (84°F), peaking at 35°C (95°F). The month also sees significant precipitation, totaling 274 mm (10.8 in) over approximately 21 days, accompanied by humidity levels around 84%. In contrast, November experiences much cooler temperatures, with a minimum of 14°C (57°F), an average of 23°C (73°F), and a maximum of 30°C (85°F). Precipitation decreases notably to 78 mm (3.1 in) over just 10 days, and humidity drops slightly to 78%. For more details, check out Phat Diem weather in November.
September and December present contrasting weather patterns. September boasts much warmer temperatures, with a minimum of 24°C (75°F) and maximums reaching up to 35°C (95°F), while December's temperatures are cooler, ranging from a low of 10°C (50°F) to a high of 29°C (84°F). Additionally, September is characterized by high humidity at 84% and significant precipitation, totaling 274 mm (10.8 in) over 21 rainy days. In contrast, December experiences lower humidity at 78% and minimal rainfall, with only 43 mm (1.7 in) over just 6 days. For more details on December weather, visit Phat Diem weather in December.
As September unfolds in Phat Diem, the weather paints a distinctly vibrant picture, contrasting sharply with the peak summer months. While temperatures remain warm, with an average that leans towards a mild comfort, the heavy rainfall, totaling 274 mm over 21 days, introduces a refreshing shift. This increased precipitation not only elevates humidity levels to a notable 84% but also transforms the landscape into a lush, verdant oasis. Overall, September offers a unique blend of warmth and wetness, making it a transitional month that invites exploration and appreciation of Phat Diem's natural beauty. For a deeper look into the weather nuances year-round, visit Phat Diem Climate.