Last updated: August 23, 2025
In April, the average temperature in Pornainen, Finland hovers around 4°C (40°F). Expect temperatures to dip as low as -15°C (4°F) and rise to a comfortable 21°C (70°F). With an average precipitation of 48 mm (1.9 in) spread over 11 days, you might want an umbrella handy. Don't forget the high average humidity of 87% that adds to the atmosphere!
In April in Pornainen, the average temperature is 4°C (40°F). Maximums can reach 21°C (70°F), and minimums can drop as low as -15°C (4°F). Travelers should be prepared for a range of temperatures and pack accordingly for both mild days and chilly nights.
In Pornainen in April, the precipitation amount is 48 mm (1.9 in) over a span of 11 days.
In Pornainen in April humidity is 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.
In Pornainen in April, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Pornainen for better planning.
UV Risk Categories
Weather in Pornainen varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Pornainen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 53 mm (2.1 inches) | 98% | low |
| February Weather | -4°C (25°F) | 47 mm (1.8 inches) | 96% | low |
| March Weather | -1°C (30°F) | 49 mm (1.9 inches) | 93% | moderate |
| April Weather | 4°C (40°F) | 48 mm (1.9 inches) | 87% | moderate |
| May Weather | 10°C (51°F) | 54 mm (2.1 inches) | 75% | moderate |
| June Weather | 17°C (62°F) | 63 mm (2.5 inches) | 74% | high |
| July Weather | 18°C (64°F) | 83 mm (3.3 inches) | 80% | high |
| August Weather | 16°C (61°F) | 80 mm (3.2 inches) | 85% | moderate |
| September Weather | 11°C (53°F) | 68 mm (2.7 inches) | 90% | moderate |
| October Weather | 6°C (44°F) | 81 mm (3.2 inches) | 94% | low |
| November Weather | 3°C (37°F) | 55 mm (2.2 inches) | 94% | low |
| December Weather | -2°C (29°F) | 71 mm (2.8 inches) | 96% | low |