Last updated: March 2, 2024
The weather in Saint John, United States, during April is characterized by an average temperature of 10°C (50°F). Highs can soar to 23°C (74°F), while lows may dip to -2°C (29°F). Typically, the humidity level in Saint John throughout April hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In April, Saint John averages 48 mm (1.9 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 13 hours 38 minutes of daylight, with the sun shining for approximately 9 hours 36 minutes each day. Additionally, there is a 57% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In April, the UV Index in Saint John reaches a maximum of 6, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 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 | 4 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 1 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||