Last updated: March 2, 2024
The weather in Cat Ba, Vietnam, during September is characterized by an average temperature of 29°C (84°F). Highs can soar to 32°C (91°F), while lows may dip to 26°C (78°F). Typically, the humidity level in Cat Ba throughout September hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Cat Ba averages 312 mm (12.3 inches) of rainfall, typically over the course of 23 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 27% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Cat Ba reaches a maximum of 13, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 12 | 13 | 11 | 8 | 4 | 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 | |||||