Last updated: January 18, 2025
Yên Bái, Vietnam exhibits a temperate humid climate, classified under the Köppen-Geiger system as Cfa and Cwa. The region experiences a significant temperature range throughout the year, with a minimum of around 3°C (37°F) during the coldest month of December, while average temperatures hover around 21°C (71°F), providing a mild climate overall. The summer months can be quite hot, reaching a maximum of 40°C (103°F) in June, highlighting the variability and dynamic nature of Yên Bái's weather patterns. This unique climatic profile significantly influences the region's biodiversity, agriculture, and lifestyle.
In Yên Bái, Vietnam, temperature patterns exhibit clear seasonal trends, with a distinct transition from cooler to warmer months. January and December mark the coldest periods, with minimum temperatures dropping to around 3°C (37°F) and average highs reaching 27°C (81°F). As spring approaches, temperatures gradually rise, particularly notable in March and April, where daytime averages peak at 35°C (95°F) and 37°C (99°F), respectively. May signals the onset of the hotter summer months, with maximum temperatures nearing 38°C (101°F). The warmest period occurs in June, with temperatures reaching up to 40°C (103°F), followed by relatively stable conditions in July and August. As the year progresses into September and October, a cooling trend emerges, leading to milder averages and lower maximums, culminating in the cooler temperatures of November. This dynamic range not only shapes the climate but also impacts agricultural practices and overall lifestyle in the region.
Mu Cang Chai experiences a temperature range of 3°C (37°F) in December to 34°C (93°F) in May, while Nghia Lo has a similar minimum of 3°C (37°F) in January but peaks at 34°C (94°F) in May. For detailed monthly temperatures, you can refer to monthly temperatures in Mu Cang Chai and monthly temperatures in Nghia Lo.
Yên Bái, Vietnam experiences a distinct pattern of precipitation throughout the year, characterized by a significant increase during the summer months. January and February are relatively drier, with precipitation levels around 82 mm (3.2 in) and 65 mm (2.6 in), respectively, and rainfall occurring over 12 to 13 days. As spring unfolds, March sees a notable spike to 141 mm (5.6 in), which sets the stage for the wetter months ahead. This increasing trend peaks in the summer, highlighting June, July, and August as the rainiest months with 343 mm (13.5 in), 400 mm (15.8 in), and a staggering 524 mm (20.6 in) of rain, respectively, and an upwards trend in rainy days ranging from 24 to 27.
The onset of autumn brings a gradual decline in precipitation, with September and October still receiving substantial rainfall at 264 mm (10.4 in) and 260 mm (10.2 in), respectively. November and December witness a marked decrease, with significant drops in both total rainfall, around 74 mm (2.9 in) and 66 mm (2.6 in), and rainy days reduced to 11 and 10. This seasonal fluctuation in precipitation not only influences the region's lush agricultural landscape but also plays a crucial role in shaping the local ecosystem and water resources.
In Yên Bái, Vietnam, sunshine duration exhibits a clear seasonal trend, with a noticeable increase from the winter months into the summer. The year begins with January recording 165 hours of sunshine, but as February progresses, this rises significantly to 220 hours. The spring months, particularly March, showcase the potential for abundant sunlight, peaking at 247 hours. April maintains this brightness with 230 hours, bravely heralding the arrival of summer. The month of **May shines the brightest, with an impressive 296 hours, making it the pinnacle of the sunniest months. This trend reflects not just an increase in daylight but also suggests conditions ripe for agricultural productivity and outdoor activities.
As summer settles in, sunshine hours remain high but slightly decrease in June with 277 hours, and then stabilize throughout July and August, where they hover around 280 to 272 hours. Interestingly, early autumn, represented by September, shows a moderate retention of sunshine at 274 hours. The transition to late autumn brings a gentle decline, with October, November, and December yielding between 247 to 233 hours of sunshine. Despite this decline, the overall annual trend highlights a robust cycle of brightness, making Yên Bái a vibrant region, particularly during the height of summer when sunlight is most plentiful.
Yên Bái, Vietnam experiences a significant fluctuation in the UV Index throughout the year, highlighting both the strength of solar radiation and the necessity for sun protection. The year begins with a UV Index of 8 in January, categorized as very high, where a mere 15 minutes of unprotected exposure can lead to skin damage. As February follows, the index climbs to 10, maintaining this very high exposure risk. The spring months see a dramatic spike, with March and April registering an extreme UV Index of 13, where the permissible exposure time shrinks to just 10 minutes.
The summer months pose the most intense risk, with UV Index values reaching as high as 15 in May and July, further reinforcing the extreme category, and continuing for other summer months like June and August with slightly lower readings of 14. This pattern indicates that from late spring through early autumn, sun safety measures become critically important. Even as the year winds down, October records a still concerning 12, with November and December dipping back to a very high category of 10 and 8, respectively, necessitating ongoing vigilance against UV exposure year-round in Yên Bái.
UV Risk Categories
In Yên Bái, Vietnam, the duration of daylight exhibits a remarkable seasonal rhythm, showcasing a gradual increase and subsequent decrease throughout the year. Starting with 10 hours of daylight in January, the days gradually lengthen, reaching 11 hours in February. As spring unfolds, March and April maintain a consistent 12 hours of daylight, providing ample time for outdoor activities and agricultural tasks. May marks the onset of longer days, peaking at 13 hours, a trend that continues through the summer months of June and July, reinforcing the region's vibrant and lively atmosphere.
However, as summer gives way to autumn, the daylight duration begins to wane. August sees a return to 12 hours, and daylight hours further decrease to 11 hours throughout October and November. Finally, the daylight duration dips back to 10 hours in December, completing the cycle. This consistent ebb and flow of daylight not only influences daily life and agriculture in Yên Bái but also shapes the region's natural cycles, providing a unique environment that adapts to the changing seasons.
The climate in Mu Cang Chai, Vietnam, features a significant temperature range, with January temperatures varying from a chilly 3°C (38°F) to a warm 26°C (79°F), peaking in May with averages around 23°C (74°F). Precipitation is highest during the summer months, particularly in July and August, with rainfall reaching up to 506 mm (19.9 in). Despite the rain, sunshine hours remain substantial, with May enjoying the most at 312 hours. For more detailed information, visit Mu Cang Chai climate.
Nghia Lo, Vietnam experiences a temperate climate with distinct seasonal variations. January sees cooler temperatures ranging from 3°C to 23°C, while summer months peak around 34°C. Rainfall is most abundant from May to August, particularly in August with 511 mm, contributing to lush landscapes. Sunshine is fairly consistent, with May boasting the highest at 300 hours. For more detailed insights, visit Nghia Lo climate.
In conclusion, Yên Bái, Vietnam, is characterized by a diverse climatic profile that includes significant variations in temperature, precipitation, sunshine duration, UV Index, and daylight hours throughout the year. The region experiences a warm, temperate climate influenced by distinct seasonal changes, with summer months bringing both higher temperatures and humidity levels. Conversely, winter months provide cooler temperatures and drier conditions. The interplay of these climatic factors not only shapes the local ecosystem but also has profound implications for agriculture, health, and daily life in Yên Bái. Understanding these patterns is crucial for residents and visitors alike, as it enables them to adapt and thrive in this vibrant environment.