Last updated: March 2, 2024
The weather in Lang Son, Vietnam, during September is characterized by an average temperature of 26°C (80°F). Highs can soar to 34°C (93°F), while lows may dip to 21°C (71°F). Typically, the humidity level in Lang Son throughout September hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Lang Son averages 198 mm (7.8 inches) of rainfall, typically over the course of 22 rainy days. The month enjoys an average of 12 hours 14 minutes of daylight, with the sun shining for approximately 9 hours 30 minutes each day. Additionally, there is a 24% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Lang Son reaches a maximum of 13, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 4 | 7 | 10 | 13 | 13 | 11 | 8 | 5 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min | |||||