Last updated: March 2, 2024
The weather in Welisara, Sri Lanka, during September is characterized by an average temperature of 27°C (81°F). Highs can soar to 31°C (89°F), while lows may dip to 23°C (74°F). Typically, the humidity level in Welisara throughout September hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In September, Welisara averages 245 mm (9.6 inches) of rainfall, typically over the course of 27 rainy days. The month enjoys an average of 12 hours 8 minutes of daylight, with the sun shining for approximately 9 hours 59 minutes each day. Additionally, there is a 14% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Welisara reaches a maximum of 14, 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 | 2 | 4 | 8 | 11 | 14 | 14 | 12 | 8 | 4 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 30 min | 45 min | ||||||