Last updated: March 2, 2024
The weather in Ilwaco, United States, during May is characterized by an average temperature of 12°C (54°F). Highs can soar to 18°C (65°F), while lows may dip to 8°C (47°F). Typically, the humidity level in Ilwaco throughout May hovers around 84%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Ilwaco averages 66 mm (2.6 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 14 hours 59 minutes of daylight, with the sun shining for approximately 9 hours 22 minutes each day. Additionally, there is a 26% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Ilwaco reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 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 | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 7 | 5 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||