On foot through the Tian-Shan mountains
The best travel time for Kyrgyzstan and the Tian-Shan mountains is from April to October, when you have pleasant temperatures and barely any rainfall.
September in Bosteri brings moderate temperatures, with daytime highs of 13°C (55°F) and nights around 7°C (45°F). It's part of the rainy season, with 171 mm (6.7 in) of rainfall on average, so an umbrella or poncho is a good idea.
September in Bosteri can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Pick a month to see the average temperature, rainfall and sunshine in Bosteri - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Bosteri typically drop from around 26°C (79°F) at the start of September to approximately 21°C (70°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 12°C (54°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Bosteri spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Bosteri between 2006 and 2026, these are the recorded extremes during September.
Find out more about the weather in Kyrgyzstan and which places have the best travel conditions in this month. See all of Kyrgyzstan in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Bosteri climate overview or explore weather in Kyrgyzstan.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
On foot through the Tian-Shan mountains
The best travel time for Kyrgyzstan and the Tian-Shan mountains is from April to October, when you have pleasant temperatures and barely any rainfall.
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