Last updated: August 27, 2025
In New Cumnock, United Kingdom, the average temperature in September is a comfortable 12°C (54°F). However, be prepared for a range of conditions, as the temperature can drop to a chilly -1°C (31°F) or rise to a warm 26°C (79°F). During this month, expect 104 mm (4.1 in) of precipitation spread over approximately 18 days, and embrace the high average humidity of 88%.
In September in New Cumnock, the average temperature is 12°C (54°F). Maximums can reach 26°C (79°F) and minimums can be as low as -1°C (31°F). Be prepared for a range of temperatures, making it ideal for layering your clothing when traveling to New Cumnock this month.
In New Cumnock in September, the total precipitation amount is 104 mm (4.1 in), occurring over the course of 18 days.
In New Cumnock in September, humidity is 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.
In New Cumnock in September, 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 New Cumnock.
UV Risk Categories
Weather in New Cumnock varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in New Cumnock, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 101 mm (4.0 inches) | 90% | low |
| February Weather | 5°C (41°F) | 137 mm (5.4 inches) | 88% | low |
| March Weather | 6°C (42°F) | 112 mm (4.4 inches) | 86% | moderate |
| April Weather | 7°C (46°F) | 48 mm (1.9 inches) | 85% | moderate |
| May Weather | 10°C (51°F) | 66 mm (2.6 inches) | 80% | high |
| June Weather | 13°C (56°F) | 108 mm (4.3 inches) | 83% | very high |
| July Weather | 15°C (59°F) | 99 mm (3.9 inches) | 82% | very high |
| August Weather | 14°C (58°F) | 129 mm (5.1 inches) | 82% | high |
| September Weather | 12°C (54°F) | 104 mm (4.1 inches) | 88% | moderate |
| October Weather | 10°C (49°F) | 141 mm (5.6 inches) | 90% | moderate |
| November Weather | 7°C (44°F) | 116 mm (4.6 inches) | 92% | low |
| December Weather | 5°C (41°F) | 129 mm (5.1 inches) | 89% | low |