Last updated: March 2, 2024
The weather in Ratnapura, Sri Lanka, during September is characterized by an average temperature of 23°C (74°F). Highs can soar to 28°C (83°F), while lows may dip to 20°C (67°F). Typically, the humidity level in Ratnapura throughout September hovers around 81%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Ratnapura averages 287 mm (11.3 inches) of rainfall, typically over the course of 26 rainy days. The month enjoys an average of 12 hours 8 minutes of daylight, with the sun shining for approximately 10 hours 22 minutes each day. Additionally, there is a 13% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Ratnapura 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 | 5 | 9 | 12 | 14 | 14 | 12 | 8 | 5 | 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 | ||||||