Last updated: March 2, 2024
The weather in Grindavik, Iceland, during May is characterized by an average temperature of 7°C (44°F). Highs can soar to 11°C (51°F), while lows may dip to 2°C (35°F). Typically, the humidity level in Grindavik throughout May hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Grindavik averages 113 mm (4.4 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 18 hours 23 minutes of daylight, with the sun shining for approximately 10 hours 26 minutes each day. Additionally, there is a 49% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Grindavik reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 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 | 2 | 3 | 4 | 5 | 5 | 5 | 5 | 4 | 3 | 2 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||