Last updated: August 27, 2025
In Forfar, United Kingdom, the average temperature in September hovers around 11°C (53°F). During this time, temperatures can dip to a chilly 1°C (34°F) or rise to a pleasant 24°C (75°F). Expect around 74 mm (2.9 in) of precipitation over 13 days, accompanied by a high average humidity of 90%, creating a typically moist and fresh atmosphere.
In September in Forfar, the average temperature is 11°C (53°F). The maximum can reach 24°C (75°F), while the minimum can drop as low as 1°C (34°F). This wide temperature range makes it essential for travelers to pack layers to ensure comfort throughout the day.
In Forfar in September, the precipitation amount is 74 mm (2.9 in) over the course of 13 days.
In Forfar in September, humidity is 90%. With an average temperature of 11°C (53°F), this humidity feels like a heavy cloak, making traveling feel sticky and exhausting, as the dampness clings to your skin and the chill in the air sharpens the discomfort, leaving you longing for a breath of fresh, dry air.
In Forfar 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 Forfar.
UV Risk Categories
Weather in Forfar varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Forfar, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 50 mm (2.0 inches) | 89% | low |
| February Weather | 3°C (38°F) | 100 mm (3.9 inches) | 88% | low |
| March Weather | 4°C (40°F) | 82 mm (3.2 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 43 mm (1.7 inches) | 84% | moderate |
| May Weather | 9°C (49°F) | 92 mm (3.6 inches) | 82% | high |
| June Weather | 12°C (55°F) | 83 mm (3.3 inches) | 84% | very high |
| July Weather | 14°C (58°F) | 96 mm (3.8 inches) | 86% | high |
| August Weather | 14°C (57°F) | 101 mm (4.0 inches) | 86% | high |
| September Weather | 11°C (53°F) | 74 mm (2.9 inches) | 90% | moderate |
| October Weather | 8°C (47°F) | 106 mm (4.2 inches) | 91% | moderate |
| November Weather | 5°C (42°F) | 97 mm (3.8 inches) | 92% | low |
| December Weather | 3°C (38°F) | 91 mm (3.6 inches) | 88% | low |