Last updated: January 18, 2025
Thimphu, Bhutan, is characterized by a Cwb (Temperate Highland) climate according to the Köppen-Geiger classification. The city experiences a wide temperature range, with minimums dipping to -13°C (10°F) in February, creating a crisp winter atmosphere. During the year, the average temperature hovers around 9°C (49°F), providing a mild environment suitable for diverse flora and fauna. The weather reaches its peak warmth in June, with maximum temperatures rising to a comfortable 25°C (77°F), fostering vibrant green landscapes and promoting outdoor activities. This unique climatic blend contributes to Thimphu's rich ecological diversity and cultural heritage.
Thimphu, Bhutan, experiences a striking seasonal temperature pattern characterized by a cold winter, a mild spring, and a warm summer. Winter months, particularly January and February, see minimum temperatures drop as low as -13°C (10°F), with average highs reaching only 15°C (60°F) in February. As the seasons transition into spring, temperatures gradually rise, with April showcasing a noticeable increase, culminating in an average of 9°C (48°F) and maximums of 20°C (68°F). The summer months, from June to August, bring warmth, peaking in June with averages of 15°C (59°F) and maximums hitting 25°C (77°F). However, as autumn approaches, temperatures begin to decline once more, with October and November returning to the coolness of earlier months. By December, the winter chill reasserts itself, with averages falling to 3°C (38°F) and minimums descending to -9°C (15°F), underscoring Thimphu’s distinct seasonal fluctuations.
Thimphu and Lungtenzampa experience similar temperature ranges, with a minimum of -13°C (10°F) in February and a maximum of 25°C (77°F) in June. For more detailed monthly temperatures in Thimphu, visit monthly temperatures in Thimphu, and for Lungtenzampa, see monthly temperatures in Lungtenzampa.
Thimphu, Bhutan, experiences a distinct precipitation pattern throughout the year, with rainfall peaking during the summer months. January starts the year with relatively low precipitation at 52 mm (2.1 in), gradually increasing in February to 100 mm (4.0 in). The transition to spring brings even more rainfall, as March and April record 182 mm (7.2 in) and 193 mm (7.6 in), respectively. By May, precipitation substantially rises to 284 mm (11.2 in), signaling the onset of the monsoon season.
The monsoon peaks in July, where Thimphu receives a significant 566 mm (22.3 in), followed by August with 385 mm (15.2 in). Additionally, September remains drenched with 316 mm (12.4 in) of rain. As the monsoon wanes, precipitation decreases in October to 151 mm (6.0 in), before settling at 68 mm (2.7 in) in both November and December. Notably, July has the highest number of rainy days, averaging 31 days, while the winter months see far fewer precipitation days, contributing to the overall seasonal variability that defines Thimphu's climate.
In Thimphu, Bhutan, sunshine duration exhibits a notable seasonal trend, with a significant increase from winter through to summer. Beginning in January, the city enjoys 228 hours of sunshine, which gradually rises each month. By April, days become increasingly brighter, reaching 326 hours, and peaking in May with 334 hours. This trend confirms the arrival of spring and early summer, when Thimphu basks in its sunniest days, ideal for outdoor activities and cultural festivals.
However, the sunshine hours take a sharp decline come July, as monsoon rains set in, resulting in only 183 hours of sunshine, the lowest for the year. While the summer months are characterized by significant rainfall, sunshine begins to rebound in September, climbing back to 249 hours. The trend continues into the fall, with October showcasing 313 hours, and November maintaining a respectable 285 hours before winter returns. Overall, the annual cycle of sunshine in Thimphu reflects a clear correlation with the changing seasons, emphasizing the importance of light during the dry, sun-filled months and its stark contrast to the overcast, rain-drenched summer.
Thimphu, Bhutan, showcases a notable seasonal variation in UV Index, emphasizing the importance of sun protection throughout the year. Starting in January, the UV Index registers at 8, categorized as very high, requiring only 15 minutes of exposure for a potential sunburn. As winter progresses into February, the index increases to 10, maintaining a high exposure category. However, it is in the spring months of March and April that the UV Index reaches critical levels, soaring to 13 and 14, respectively, indicating extreme exposure risks and a reduced burn time of just 10 minutes.
The peak UV levels are reached in the summer months, with UV Index readings soaring to 16 from May through July, remaining in the extreme category for sun safety. Although the harshness of UV radiation begins to slightly decrease in August (15) and September (14), caution remains crucial with burn times still at 10 minutes. As autumn approaches, the UV Index gradually declines to 12 in October, then to 9 in November, before dropping further to 7 in December. This trend highlights the need for heightened awareness and protective measures during the spring and summer, while also indicating a gradual easing of UV risks in the winter months.
UV Risk Categories
In Thimphu, Bhutan, the duration of daylight varies distinctly throughout the year, reflecting the changing seasons. January begins with 10 hours of daylight, gradually increasing to 11 hours in February. As spring approaches, daylight continues to extend, reaching 12 hours in both March and April. This trend culminates in May and June, where Thimphu enjoys the longest days of the year at 13 hours. This extended daylight during the late spring and early summer months is ideal for outdoor activities and vibrant cultural experiences.
As the summer transitions into autumn, daylight duration begins to taper off, with September maintaining 12 hours before falling to 11 hours in October. The decrease continues through November and December, with both months offering 10 hours of daylight. This cyclical pattern highlights the rhythmic nature of Thimphu's daylight, which plays an essential role in shaping the daily lives of its residents and the timing of agricultural activities throughout the year.
Lungtenzampa, Bhutan experiences a diverse climate characterized by cold winters and mild summers. January temperatures can drop as low as -11°C (13°F), while July sees averages around 16°C (61°F). Precipitation peaks in July with 566 mm (22.3 in) of rain, contributing to a wet summer season. Sunshine hours are highest in April and May, reaching over 330 hours, but decrease significantly in July. For more detailed climate information, visit Lungtenzampa climate.
Thimphu, Bhutan experiences a varied climate, with cold winters and warm summers. January sees minimum temperatures dropping to -11°C (13°F), while July reaches up to 23°C (74°F). The region experiences the highest precipitation in July, accumulating 566 mm (22.3 in), yet enjoys ample sunshine, particularly from March to May, with March recording 315 hours. Overall, the climate is characterized by significant seasonal changes, making it an intriguing destination. For more details, visit Thimphu climate.
In conclusion, Thimphu, Bhutan, exhibits a unique interplay of climate characteristics that define its landscape and lifestyle throughout the year. From the diverse temperature variations between harsh winters and warm summers to the distinct patterns of precipitation and sunshine, these climatic elements establish a vibrant and dynamic environment. The high UV Index during peak summer months and the significant daylight variation also underscore the importance of sun safety and adaptive measures for the local population. Together, these aspects reflect the rich ecological tapestry and cultural practices influenced by the region's climate, making Thimphu a fascinating study in the relationship between environment and human activity.