Last updated: March 2, 2024
The weather in Colombo, Sri Lanka, during May is characterized by an average temperature of 28°C (83°F). Highs can soar to 31°C (89°F), while lows may dip to 26°C (78°F). Typically, the humidity level in Colombo throughout May hovers around 76%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Colombo averages 295 mm (11.6 inches) of rainfall, typically over the course of 29 rainy days. The month enjoys an average of 12 hours 25 minutes of daylight, with the sun shining for approximately 10 hours 3 minutes each day. Additionally, there is a 17% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Colombo 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 | 12 | 14 | 14 | 12 | 9 | 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 | ||||||