Last updated: August 27, 2025
In Grendon Underwood, United Kingdom, the average temperature in April is a mild 9°C (49°F). However, temperatures can range from a chilly -3°C (28°F) to a warm 26°C (79°F). Expect 37 mm (1.5 in) of precipitation over approximately 9 days, with an average humidity of 85%, creating a pleasantly crisp atmosphere. 🌧️
In April in Grendon Underwood, the average temperature is 9°C (49°F). The maximum can reach 26°C (79°F), while the minimum can drop to as low as -3°C (28°F). Be sure to pack layers to accommodate the varying temperatures during your travels!
In Grendon Underwood in April, the precipitation amount is 37 mm (1.5 in) over a span of 9 days.
In Grendon Underwood in April humidity is 85%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making every step outside a challenge as the moisture in the air weighs heavily and lingers, transforming even simple outings into a quest for comfort.
In Grendon Underwood in April, 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 Grendon Underwood.
UV Risk Categories
Weather in Grendon Underwood varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Grendon Underwood, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 53 mm (2.1 inches) | 91% | low |
| February Weather | 6°C (42°F) | 50 mm (2.0 inches) | 89% | low |
| March Weather | 7°C (45°F) | 60 mm (2.4 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 37 mm (1.5 inches) | 85% | moderate |
| May Weather | 12°C (55°F) | 65 mm (2.5 inches) | 79% | high |
| June Weather | 16°C (61°F) | 74 mm (2.9 inches) | 80% | very high |
| July Weather | 18°C (65°F) | 65 mm (2.6 inches) | 71% | very high |
| August Weather | 17°C (63°F) | 71 mm (2.8 inches) | 76% | high |
| September Weather | 15°C (59°F) | 56 mm (2.2 inches) | 82% | high |
| October Weather | 11°C (52°F) | 92 mm (3.6 inches) | 90% | moderate |
| November Weather | 7°C (46°F) | 58 mm (2.3 inches) | 92% | low |
| December Weather | 6°C (43°F) | 81 mm (3.2 inches) | 92% | low |