Last updated: August 23, 2025
In September, the average temperature in Passage West, Ireland hovers around 15°C (58°F), with minimum temperatures dipping to 8°C (47°F) and peaking at a comfortable 21°C (70°F). Expect about 67 mm (2.6 in) of precipitation over 11 days, and prepare for a rather humid experience with an average humidity level of 85%.
In September in Passage West, the average temperature is 15°C (58°F). Maximums can reach 21°C (70°F), and minimums can be as low as 8°C (47°F). This mild climate makes it an ideal time for exploring and enjoying outdoor activities in Passage West.
In Passage West in September, the total precipitation amount is 67 mm (2.6 in) over the course of 11 days.
In Passage West in September humidity is 85%. With an average temperature of 15°C (58°F), this humidity feels like an enveloping blanket, making travel feel sticky and heavy, often leading to a sense of discomfort that can drain your energy during outdoor explorations.
In Passage West 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 Passage West.
UV Risk Categories
Weather in Passage West varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Passage West, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (46°F) | 57 mm (2.2 inches) | 83% | low |
| February Weather | 8°C (46°F) | 100 mm (3.9 inches) | 85% | low |
| March Weather | 8°C (46°F) | 80 mm (3.2 inches) | 84% | moderate |
| April Weather | 9°C (49°F) | 65 mm (2.6 inches) | 84% | high |
| May Weather | 12°C (53°F) | 65 mm (2.5 inches) | 84% | high |
| June Weather | 14°C (58°F) | 52 mm (2.0 inches) | 85% | very high |
| July Weather | 16°C (62°F) | 56 mm (2.2 inches) | 85% | very high |
| August Weather | 16°C (61°F) | 78 mm (3.1 inches) | 84% | high |
| September Weather | 15°C (58°F) | 67 mm (2.6 inches) | 85% | moderate |
| October Weather | 12°C (54°F) | 95 mm (3.7 inches) | 86% | moderate |
| November Weather | 10°C (50°F) | 88 mm (3.5 inches) | 84% | low |
| December Weather | 9°C (48°F) | 106 mm (4.2 inches) | 83% | low |