Last updated: March 2, 2024
The weather in Keflavik, Iceland, during April is characterized by an average temperature of 5°C (41°F). Highs can soar to 9°C (49°F), while lows may dip to -3°C (26°F). Typically, the humidity level in Keflavik throughout April hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In April, Keflavik averages 133 mm (5.2 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 15 hours 8 minutes of daylight, with the sun shining for approximately 7 hours 7 minutes each day. Additionally, there is a 26% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In April, the UV Index in Keflavik reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 3 | 3 | 2 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||