Last updated: August 27, 2025
In May, the average temperature in Finnsnes, Norway hovers around 5°C (41°F). You can expect chilly nights with temperatures dipping as low as -8°C (18°F), while the days can warm up to a pleasant 21°C (70°F). Be prepared for some rain, as 81 mm (3.2 in) of precipitation is typical over 14 days, and with an average humidity of 83%, you'll want to dress accordingly!
In May in Finnsnes, the average temperature is 5°C (41°F). The maximum can reach 21°C (70°F), while the minimum can drop as low as -8°C (18°F). Be sure to pack for a variety of weather conditions if you're planning to travel during this time.
In Finnsnes in May, the precipitation amount is 81 mm (3.2 in) over a span of 14 days.
In Finnsnes in May humidity is 83%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm and dry.
In Finnsnes in May, 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 Finnsnes for better planning.
UV Risk Categories
Weather in Finnsnes varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Finnsnes, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 90 mm (3.5 inches) | 95% | low |
| February Weather | -6°C (21°F) | 100 mm (4.0 inches) | 93% | low |
| March Weather | -3°C (27°F) | 131 mm (5.1 inches) | 91% | low |
| April Weather | 0°C (33°F) | 103 mm (4.0 inches) | 89% | moderate |
| May Weather | 5°C (41°F) | 81 mm (3.2 inches) | 83% | moderate |
| June Weather | 10°C (51°F) | 123 mm (4.8 inches) | 84% | moderate |
| July Weather | 13°C (56°F) | 89 mm (3.5 inches) | 85% | moderate |
| August Weather | 12°C (54°F) | 126 mm (4.9 inches) | 88% | moderate |
| September Weather | 8°C (47°F) | 129 mm (5.1 inches) | 91% | low |
| October Weather | 3°C (38°F) | 88 mm (3.5 inches) | 92% | low |
| November Weather | -1°C (31°F) | 101 mm (4.0 inches) | 92% | low |
| December Weather | -5°C (23°F) | 84 mm (3.3 inches) | 94% | low |