Last updated: March 2, 2024
The weather in Ratnapura, Sri Lanka, during January is characterized by an average temperature of 23°C (74°F). Highs can soar to 29°C (84°F), while lows may dip to 16°C (61°F). Typically, the humidity level in Ratnapura throughout January hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Ratnapura averages 241 mm (9.5 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 11 hours 46 minutes of daylight, with the sun shining for approximately 8 hours 38 minutes each day. Additionally, there is a 15% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In January, the UV Index in Ratnapura reaches a maximum of 12, 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 | 3 | 6 | 10 | 12 | 12 | 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 | |||||