Last updated: August 23, 2025
In August, the average temperature in Castleknock, Ireland hovers around 15°C (60°F), with a minimum dipping to 7°C (45°F) and a maximum reaching 23°C (73°F). Expect 95 mm (3.8 in) of precipitation spread over about 16 days, contributing to an average humidity level of 85%. Be prepared for a mix of cozy, rainy days and mild temperatures!
In August in Castleknock, the average temperature is 15°C (60°F). Maximum temperatures can reach 23°C (73°F), while minimums can drop to as low as 7°C (45°F). This mild climate makes Castleknock an ideal destination for travelers seeking pleasant weather.
In Castleknock in August, the total precipitation amount is 95 mm (3.8 in) that falls over the course of 16 days.
In Castleknock in August, humidity is 85%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable for travelers who may find themselves constantly seeking shade and hydration.
In Castleknock in August, 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 Castleknock.
UV Risk Categories
Weather in Castleknock varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Castleknock, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 57 mm (2.2 inches) | 85% | low |
| February Weather | 6°C (43°F) | 80 mm (3.1 inches) | 86% | low |
| March Weather | 7°C (44°F) | 81 mm (3.2 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 52 mm (2.0 inches) | 85% | moderate |
| May Weather | 11°C (52°F) | 72 mm (2.8 inches) | 83% | high |
| June Weather | 14°C (57°F) | 75 mm (3.0 inches) | 85% | very high |
| July Weather | 16°C (60°F) | 80 mm (3.2 inches) | 86% | very high |
| August Weather | 15°C (60°F) | 95 mm (3.8 inches) | 85% | high |
| September Weather | 13°C (56°F) | 73 mm (2.9 inches) | 86% | moderate |
| October Weather | 11°C (51°F) | 87 mm (3.4 inches) | 87% | moderate |
| November Weather | 8°C (46°F) | 97 mm (3.8 inches) | 86% | low |
| December Weather | 6°C (44°F) | 94 mm (3.7 inches) | 84% | low |