Last updated: August 28, 2025
In September, Tam Dao, Vietnam experiences a vibrant shift in weather, with maximum temperatures reaching a sweltering 36°C (97°F) and an average of 28°C (82°F), alongside a comfortable minimum of 21°C (70°F). This period is characterized by significant precipitation, accumulating to 285 mm (11.2 in) over approximately 23 days, creating a lush, green landscape that thrives under the frequent rainfall. The humidity level remains high at 82%, contributing to a warm and muggy atmosphere, ideal for those looking to embrace the tropical climate while exploring the region's natural beauty. Whether you're hiking the hills or enjoying local cuisine, September in Tam Dao is both vibrant and immersive.
In September, Tam Dao, Vietnam experiences a shift towards cooler and more comfortable temperatures as it transitions from the summer heat. With minimums around 21°C (70°F) and average highs reaching 36°C (97°F), the weather becomes noticeably milder compared to the sweltering peak of the summer months. This drop in temperature not only brings relief but also makes September a delightful time for outdoor activities. The average day temperature settles at about 28°C (82°F), striking a wonderful balance that invites both locals and travelers to explore the lush landscapes of this serene destination. As the month progresses, the welcome change foreshadows the arrival of autumn, blending warmth with a refreshing ambiance.
September marks a notable transition in Tam Dao, Vietnam's climate, with precipitation measuring 285 mm (11.2 in) over 23 days of rainfall. This significant drop from August's peak of 457 mm (18.0 in) illustrates the tail end of the monsoon season, as the region experiences a gradual easing of intense rains. As summer wanes, the frequency of rain also slightly declines, yet September still holds onto a robust weather pattern compared to the drier months ahead. With this mix of rain and fading summer warmth, the landscape remains lush and vibrant, creating a picturesque scene for both residents and visitors alike.
In September, Tam Dao, Vietnam experiences a humidity level of 82%, reflecting a slight dip from the peak summer months of July and August, where levels soared to 90% and 89%, respectively. This transition marks a gradual decline in moisture as the region approaches the drier fall months, with October showing further decrease to 77%. Overall, the summer months characterized by high humidity indicate a wet and warm climate, while September's levels suggest a shift towards more comfortable conditions, paving the way for a more pleasant atmosphere as the year progresses. This pattern highlights Tam Dao's tropical climate, where humidity plays a pivotal role in shaping the experience of its stunning landscapes.
In September, Tam Dao, Vietnam, experiences a consistently high UV Index of 13, maintaining its status in the extreme exposure category. This level of UV radiation means that individuals can expect to burn in just 10 minutes, underscoring the importance of sun protection during this period. As the months progress from January to September, the trend shows a gradual increase in UV intensity, particularly peaking during the mid-year months, with both July and August also recording an index of 13. Following September, there is a slight dip in October, where the UV Index lowers to 11, signaling a minor change as the region transitions into the final months of the year. For those planning outdoor activities, it’s crucial to stay informed and protected. For more details, visit Tam Dao UV Index.
UV Risk Categories
In September, Tam Dao, Vietnam basks in a delightful 265 hours of sunshine, making it one of the sunniest months of the year. This vibrant month follows a pattern established over the summer, where sunshine hours peaked in May and July with an impressive 273 hours, creating a trend of ample sunlight that draws visitors to enjoy the stunning landscapes. As autumn approaches, the slightly reduced sunshine in October at 242 hours suggests a subtle transition, yet September remains a beautiful bridge, connecting the warmth of summer to the cooler, crisper days ahead. With a rich tapestry of light and nature, September captures the essence of Tam Dao's charm perfectly.
In Tam Dao, Vietnam, September brings a 24% chance of sunny weather, marking a modest rise from the summer months. While August lingers with only a 13% chance of sunshine, September shows potential for more favorable conditions. This transitional period hints at the encroaching autumn, as the likelihood of bright days gradually increases into October, which boasts a 27% chance. Despite being lower compared to peak months like December at 49%, September's sunshine opportunities hint at a refreshing change, making it a time for travelers to enjoy the rich beauty of Tam Dao amidst the fluctuating weather patterns.
As September rolls into Tam Dao, Vietnam, the daylight duration maintains a pleasant balance with 12 hours of sunlight, mirroring the trend seen in both April and August. Following a gradual increase from 10 hours in January to a peak of 13 hours during the summer months of May through July, the subtle decline begins as the days shorten in October and November. This seasonal pattern not only highlights the beauty of autumn but also allows visitors to enjoy the golden hues of the landscape during these tranquil early autumn days. As daylight wanes, the region invites a contemplative ambiance perfect for savoring the cooling temperatures and breathtaking scenery.
As September settles in Tam Dao, Vietnam, the gentle whispers of the wind signal the onset of autumn. With an average wind speed of 1.1 m/s (3 mph), this month experiences the lightest breeze of the year, a soothing contrast to the more robust gusts of spring and early summer. The steady trend of waning wind speeds, starting from the brisk 1.9 m/s (4 mph) in March through to summer and then tapering off in September, invites a serene ambiance perfect for contemplation and relaxation. As the landscape transitions into its autumn palette, the calming breezes reflect the tranquil spirit of this enchanting highland retreat, encouraging visitors to embrace the serene beauty of the season.
Weather in Tam Dao varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tam Dao, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warm temperatures, with averages around 28°C (82°F) and highs reaching up to 36°C (97°F), making it quite hot. The month also experiences considerable rainfall, with 285 mm (11.2 in) of precipitation spread over 23 days, contributing to a high humidity level of 82%. In contrast, January brings a much cooler climate, with average temperatures dropping to 17°C (64°F) and maximums around 28°C (83°F). Additionally, January sees significantly less rainfall, with only 57 mm (2.2 in) occurring over 8 days, and a lower humidity level of 66%. For more detailed insights into the January weather, you can visit Tam Dao weather in January.
The weather in September is significantly warmer and more humid compared to February. With an average temperature of 28°C (82°F), September sees highs reaching up to 36°C (97°F), while February maintains a cooler average of 18°C (65°F) with maximum temperatures around 31°C (87°F). Additionally, September experiences a substantial amount of rainfall, totaling 285 mm (11.2 in) over 23 days, in stark contrast to February’s much lighter rainfall of 35 mm (1.4 in) across just 8 days. The increased humidity in September, at 82%, makes it feel even warmer, whereas February's humidity is comparatively lower at 71%. For those specifically interested in the conditions of February, more details can be found here: Tam Dao weather in February.
In September, the weather is notably warmer and more humid, with average temperatures around 28°C (82°F) and maximum highs reaching up to 36°C (97°F). This month also experiences significant rainfall, totaling 285 mm (11.2 in) over approximately 23 days, resulting in a humidity level of 82%. In contrast, March brings milder temperatures, with an average of 22°C (72°F) and maximums of 34°C (94°F), along with substantially less precipitation at 69 mm (2.7 in) spread over 15 days. Humidity also decreases to 69%, making March feel more comfortable compared to the sweltering September. For a more detailed look at March weather in the area, you can check Tam Dao weather in March.
September and April present contrasting weather patterns. September typically boasts higher temperatures, with a minimum of 21°C (70°F) and an average of 28°C (82°F), peaking at 36°C (97°F). However, it is also characterized by significant rainfall, averaging 285 mm (11.2 in) over 23 days and high humidity at 82%. In contrast, April offers milder conditions, with a minimum of 14°C (57°F) and an average of 24°C (76°F), and a maximum of 35°C (96°F). Precipitation is lower, totaling 140 mm (5.5 in) over just 15 days, accompanied by a more comfortable humidity level of 64%. For a closer look at April conditions, check out Tam Dao weather in April.
In September, the weather tends to be warm and humid, with average temperatures around 28°C (82°F) and maximum highs reaching up to 36°C (97°F). The month is characterized by considerable rainfall, averaging 285 mm over 23 days, which contributes to the high humidity level of 82%. In contrast, May also boasts warm temperatures, with an average of 27°C (82°F) and maximums soaring to 38°C (101°F), but experiences less precipitation at 203 mm over 18 days, resulting in a more moderate humidity level of 73%. For more detailed information on weather patterns in May, you can refer to Tam Dao weather in May.
September and June exhibit similar warm temperatures, with September having slightly cooler nights at a minimum of 21°C (70°F) compared to June’s 22°C (72°F). However, June boasts a higher average temperature of 30°C (86°F) and can reach a maximum of 40°C (103°F), making it typically hotter than September, which peaks at 36°C (97°F). In terms of precipitation, September experiences more rainfall with 285 mm (11.2 in) over 23 days, while June sees 257 mm (10.1 in) across 17 days. Humidity levels remain comparable, with September at 82% and June slightly lower at 81%. For more detailed insights, check out Tam Dao weather in June.
In comparing the weather between September and July, September tends to be slightly cooler, with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 36°C (97°F), while July's temperatures are higher, with a minimum of 24°C (75°F) and a maximum of 38°C (100°F). Both months experience significant precipitation, but July sees a bit more, with 322 mm (12.7 in) compared to September's 285 mm (11.2 in), and both months share a similar number of rainy days at 23. Additionally, humidity is notably higher in July at 90%, compared to 82% in September, contributing to a more uncomfortable heat during the earlier month. For more detailed information, you can check out Tam Dao weather in July.
In comparing the weather between August and September, we see a slight decrease in temperature and humidity. August records a minimum of 24°C (75°F) and an average of 29°C (84°F), peaking at a hot 38°C (100°F), while September shows more moderate temperatures, with a minimum of 21°C (70°F) and a maximum of 36°C (97°F). Precipitation is notably higher in August, with 457 mm (18.0 in) over 24 days compared to September's 285 mm (11.2 in) over 23 days. Humidity levels also taper off slightly in September to 82% from the higher 89% experienced in August. For a closer look at the conditions in August, you can visit Tam Dao weather in August.
September and October exhibit notable differences in weather patterns. In September, temperatures remain warm with a minimum of 21°C (70°F) and an average high of 36°C (97°F), contributing to a high humidity level of 82%. The month also sees significant rainfall, accumulating 285 mm (11.2 in) over 23 days. In contrast, October brings a shift towards cooler temperatures, with a minimum of 16°C (60°F) and an average high of 34°C (93°F). Additionally, October experiences less precipitation at 236 mm (9.3 in) over 17 days, along with reduced humidity at 77%. For more detailed information, you can check out Tam Dao weather in October.
September and November present a striking contrast in weather patterns. In September, temperatures range from a minimum of 21°C to a maximum of 36°C, with an average temperature of 28°C. The month is also characterized by high humidity at 82% and significant rainfall of 285 mm over 23 days. In contrast, November sees a drop in temperatures, with a minimum of 13°C, an average of 22°C, and a maximum of 32°C. Precipitation decreases substantially to 44 mm over just 8 days, and humidity levels are lower at 72%. For more details on November's weather, you can visit Tam Dao weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a warm minimum of 21°C (70°F) to a scorching maximum of 36°C (97°F), with an average of 28°C (82°F). The month is characterized by high humidity at 82% and significant rainfall, tallying up to 285 mm (11.2 in) over 23 rainy days. In stark contrast, December brings cooler temperatures, ranging from a minimum of 7°C (45°F) to a pleasant maximum of 29°C (85°F), with an average of 18°C (64°F). Precipitation drops significantly to 38 mm (1.5 in) over just 7 days, and humidity decreases to 71%. For a more detailed look at December weather, you can visit Tam Dao weather in December.
As September unfolds in Tam Dao, the weather presents a refreshing shift from the hotter summer months, with average temperatures comfortably settling around 28°C (82°F). This transitional period brings along a notable increase in precipitation, totaling 285 mm over about 23 days, leading to lush greenery and vibrant landscapes. The high humidity, averaging 82%, gives the air a refreshing crispness, making it an ideal time for those who enjoy cooler, rain-soaked environments. While the maximum temperatures can still reach up to 36°C (97°F), the overall atmosphere feels more temperate compared to the peak summer heat. For a deeper understanding of how the weather evolves throughout the year, explore the detailed insights at Tam Dao Climate.