Last updated: August 23, 2025
In Ristinummi, Finland, the average temperature in May hovers around 9°C (48°F). Temperatures can vary significantly, with a minimum of -4°C (25°F) and a maximum reaching 27°C (80°F). Visitors can expect 45 mm (1.8 in) of precipitation over 9 days, contributing to an average humidity of 77%.
In May in Ristinummi, the average temperature is 9°C (48°F), with maximums reaching 27°C (80°F) and minimums dropping as low as -4°C (25°F). Be prepared for a wide range of temperatures, making layers essential for your trip.
In Ristinummi in May, the precipitation amount is 45 mm (1.8 in) spread over 9 days.
In Ristinummi in May, humidity is 77%. With an average temperature of 9°C (48°F), this humidity feels like a damp embrace, making traveling a bit more challenging as the cool air combines with the moisture, often leaving you with a chill that seeps into your bones.
In Ristinummi in May, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Ristinummi.
UV Risk Categories
Weather in Ristinummi varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Ristinummi, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -4°C (26°F) | 38 mm (1.5 inches) | 95% | low |
February Weather | -5°C (23°F) | 41 mm (1.6 inches) | 93% | low |
March Weather | -2°C (29°F) | 41 mm (1.6 inches) | 91% | moderate |
April Weather | 3°C (38°F) | 41 mm (1.6 inches) | 85% | moderate |
May Weather | 9°C (48°F) | 45 mm (1.8 inches) | 77% | moderate |
June Weather | 15°C (59°F) | 58 mm (2.3 inches) | 74% | high |
July Weather | 17°C (63°F) | 63 mm (2.5 inches) | 80% | high |
August Weather | 15°C (60°F) | 88 mm (3.5 inches) | 82% | moderate |
September Weather | 11°C (51°F) | 74 mm (2.9 inches) | 88% | moderate |
October Weather | 6°C (42°F) | 82 mm (3.2 inches) | 92% | low |
November Weather | 1°C (35°F) | 57 mm (2.2 inches) | 92% | low |
December Weather | -2°C (28°F) | 50 mm (2.0 inches) | 93% | low |