Last updated: June 24, 2025
In September, the average temperature in Manchester, United States is a pleasant 18°C (65°F). However, visitors should be prepared for temperature fluctuations, with a minimum of 2°C (36°F) and a maximum reaching 34°C (93°F). During this month, the region experiences 78 mm (3.1 in) of precipitation over about 8 days, contributing to an average humidity level of 71%.
In September in Manchester, the average temperature is 18°C (65°F). The maximum can reach 34°C (93°F), while the minimum can drop as low as 2°C (36°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.
In Manchester in September, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.
In Manchester in September humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.
In Manchester in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Manchester.
UV Risk Categories
Weather in Manchester varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Manchester, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 70 mm (2.7 inches) | 86% | moderate |
| February Weather | -1°C (30°F) | 83 mm (3.3 inches) | 84% | moderate |
| March Weather | 2°C (36°F) | 80 mm (3.2 inches) | 82% | moderate |
| April Weather | 8°C (47°F) | 128 mm (5.0 inches) | 80% | very high |
| May Weather | 14°C (58°F) | 77 mm (3.1 inches) | 72% | very high |
| June Weather | 20°C (69°F) | 85 mm (3.3 inches) | 72% | very high |
| July Weather | 23°C (74°F) | 139 mm (5.5 inches) | 67% | very high |
| August Weather | 22°C (72°F) | 87 mm (3.4 inches) | 66% | very high |
| September Weather | 18°C (65°F) | 78 mm (3.1 inches) | 71% | high |
| October Weather | 12°C (54°F) | 128 mm (5.1 inches) | 78% | moderate |
| November Weather | 4°C (40°F) | 100 mm (3.9 inches) | 84% | moderate |
| December Weather | -1°C (31°F) | 119 mm (4.7 inches) | 81% | low |