Last updated: August 27, 2025
In September, the average temperature in St Mary Bourne, United Kingdom hovers around 15°C (59°F), with a comfortable range stretching from a minimum of 2°C (36°F) to a pleasant maximum of 28°C (83°F). Expect about 47 mm (1.9 in) of precipitation spread over 9 days, contributing to the area's average humidity of 82%. Prepare for a mix of cool and warm days, ideal for exploring the local charms!
In September in St Mary Bourne, the average temperature is 15°C (59°F). Maximums can reach 28°C (83°F), and minimums can be as low as 2°C (36°F). This range makes it a great time for travelers to enjoy a mix of pleasant days and cooler evenings, so packing layers is advisable.
In St Mary Bourne in September, the precipitation amount is 47 mm (1.9 in) spread over a period of 9 days.
In St Mary Bourne in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.
In St Mary Bourne in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in St Mary Bourne, you can refer to this Hourly UV Index in St Mary Bourne.
UV Risk Categories
Weather in St Mary Bourne varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in St Mary Bourne, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 51 mm (2.0 inches) | 91% | low |
| February Weather | 6°C (43°F) | 58 mm (2.3 inches) | 89% | low |
| March Weather | 7°C (45°F) | 67 mm (2.6 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 40 mm (1.6 inches) | 85% | high |
| May Weather | 12°C (55°F) | 71 mm (2.8 inches) | 79% | high |
| June Weather | 16°C (61°F) | 79 mm (3.1 inches) | 80% | very high |
| July Weather | 18°C (65°F) | 63 mm (2.5 inches) | 71% | very high |
| August Weather | 17°C (63°F) | 73 mm (2.9 inches) | 76% | high |
| September Weather | 15°C (59°F) | 47 mm (1.9 inches) | 82% | high |
| October Weather | 11°C (53°F) | 104 mm (4.1 inches) | 90% | moderate |
| November Weather | 8°C (46°F) | 60 mm (2.4 inches) | 92% | low |
| December Weather | 6°C (44°F) | 89 mm (3.5 inches) | 92% | low |