Last updated: August 27, 2025
In September, the average temperature in Lairg, United Kingdom is a cool 11°C (53°F), with lows dipping to -1°C (31°F) and highs reaching up to 23°C (74°F). Expect to see 115 mm (4.5 in) of precipitation spread over 18 days, contributing to an average humidity of 90%. Be prepared for a mix of chilly and mild days as the month unfolds!
In September in Lairg, the average temperature is 11°C (53°F). The maximum can reach 23°C (74°F), and the minimum can be as low as -1°C (31°F). Travelers should be prepared for a range of weather conditions, from mild days to crisp nights.
In Lairg in September, the precipitation amount is 115 mm (4.5 in) occurring over 18 days.
In Lairg 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 Lairg 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 Lairg.
UV Risk Categories
Weather in Lairg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lairg, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 83 mm (3.3 inches) | 89% | low |
| February Weather | 3°C (37°F) | 89 mm (3.5 inches) | 88% | low |
| March Weather | 4°C (40°F) | 105 mm (4.1 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 73 mm (2.9 inches) | 84% | moderate |
| May Weather | 9°C (49°F) | 96 mm (3.8 inches) | 82% | moderate |
| June Weather | 12°C (54°F) | 94 mm (3.7 inches) | 84% | very high |
| July Weather | 14°C (57°F) | 89 mm (3.5 inches) | 86% | high |
| August Weather | 13°C (56°F) | 110 mm (4.3 inches) | 86% | high |
| September Weather | 11°C (53°F) | 115 mm (4.5 inches) | 90% | moderate |
| October Weather | 8°C (47°F) | 132 mm (5.2 inches) | 91% | moderate |
| November Weather | 5°C (41°F) | 99 mm (3.9 inches) | 92% | low |
| December Weather | 3°C (38°F) | 93 mm (3.7 inches) | 88% | low |