Last updated: August 27, 2025
In Welwyn Garden City, United Kingdom, the average temperature in March hovers around 7°C (45°F). Expect a chilly range with minimum temperatures dipping to -6°C (22°F) and highs reaching up to 22°C (71°F). During this month, rainfall is notable, with an average of 56 mm (2.2 in) spread over 13 days. You'll also find the atmosphere quite humid, with an average humidity of 86%.
In March in Welwyn Garden City, the average temperature is 7°C (45°F), with maximums reaching up to 22°C (71°F) and minimums plummeting as low as -6°C (22°F). Travelers should be prepared for a wide range of weather conditions during this month.
In Welwyn Garden City in March, the precipitation amount is 56 mm (2.2 in) over the course of 13 days.
In Welwyn Garden City in March, humidity is 86%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and necessitating cozy layers to stay warm while navigating the moist air.
In Welwyn Garden City in March, 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 Welwyn Garden City for better planning.
UV Risk Categories
Weather in Welwyn Garden City varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Welwyn Garden City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 54 mm (2.1 inches) | 91% | low |
| February Weather | 6°C (43°F) | 51 mm (2.0 inches) | 89% | low |
| March Weather | 7°C (45°F) | 56 mm (2.2 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 32 mm (1.3 inches) | 85% | moderate |
| May Weather | 13°C (55°F) | 65 mm (2.5 inches) | 79% | high |
| June Weather | 16°C (62°F) | 74 mm (2.9 inches) | 80% | very high |
| July Weather | 18°C (65°F) | 67 mm (2.6 inches) | 71% | very high |
| August Weather | 18°C (64°F) | 72 mm (2.8 inches) | 76% | high |
| September Weather | 15°C (59°F) | 49 mm (1.9 inches) | 82% | high |
| October Weather | 12°C (53°F) | 86 mm (3.4 inches) | 90% | moderate |
| November Weather | 8°C (46°F) | 51 mm (2.0 inches) | 92% | low |
| December Weather | 6°C (43°F) | 83 mm (3.3 inches) | 92% | low |