Last updated: August 27, 2025
In Hemel Hempstead, United Kingdom, the average temperature in April hovers around 9°C (49°F). Expect a range of temperatures, with a minimum of -2°C (28°F) and a maximum reaching 27°C (80°F). During this month, precipitation averages around 34 mm (1.3 in) spread over 8 days, contributing to an average humidity of 85%.
In April in Hemel Hempstead, the average temperature is 9°C (49°F). Maximum temperatures can reach 27°C (80°F), while minimums can dip as low as -2°C (28°F). It's a season of contrasts, so be prepared for both warm and chilly moments during your travels!
In Hemel Hempstead in April, the precipitation amount is 34 mm (1.3 in) over a span of 8 days.
In Hemel Hempstead 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 Hemel Hempstead 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 Hemel Hempstead.
UV Risk Categories
Weather in Hemel Hempstead varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Hemel Hempstead, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 56 mm (2.2 inches) | 91% | low |
| February Weather | 6°C (43°F) | 52 mm (2.0 inches) | 89% | low |
| March Weather | 7°C (45°F) | 57 mm (2.2 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 34 mm (1.3 inches) | 85% | moderate |
| May Weather | 13°C (55°F) | 66 mm (2.6 inches) | 79% | high |
| June Weather | 16°C (61°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 | 17°C (64°F) | 71 mm (2.8 inches) | 76% | high |
| September Weather | 15°C (59°F) | 51 mm (2.0 inches) | 82% | high |
| October Weather | 11°C (53°F) | 91 mm (3.6 inches) | 90% | moderate |
| November Weather | 8°C (46°F) | 54 mm (2.1 inches) | 92% | low |
| December Weather | 6°C (43°F) | 83 mm (3.3 inches) | 92% | low |