Last updated: August 27, 2025
In Welwyn Garden City, United Kingdom, the average temperature in August is a pleasant 18°C (64°F). Throughout the month, temperatures can range from a cool 8°C (47°F) to a warm 34°C (93°F). Expect 72 mm (2.8 in) of precipitation over approximately 13 days, contributing to an average humidity level of 76%. Plan accordingly for a mix of cozy and vibrant days!
In August in Welwyn Garden City, the average temperature is 18°C (64°F). Maximums can reach 34°C (93°F) and minimums can be as low as 8°C (47°F). This makes it a great time for travelers to enjoy mild weather with some warmer days, perfect for exploring outdoor activities.
In Welwyn Garden City in August, the precipitation amount is 72 mm (2.8 in) over a period of 13 days.
In Welwyn Garden City in August, humidity is 76%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel steamy and invigorating—perfect for exploring charming streets, though you might want to take breaks in the shade.
In Welwyn Garden City in August, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Welwyn Garden City.
UV Risk Categories
Weather in Welwyn Garden City varies notably across the year, with each month offering distinct climate conditions. This page compares August’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 |