Last updated: June 18, 2025
In August, the average temperature in Grand Haven, Canada hovers around 15°C (59°F), making it a pleasant time of year. However, temperatures can range from a chilly 1°C (35°F) to a warm 31°C (88°F). Be prepared for some rain, as 59 mm (2.3 in) of precipitation is expected over 10 days, and don't forget the humidity, which averages a sticky 80%!
In August in Grand Haven, the average temperature is 15°C (59°F). The maximum can reach 31°C (88°F), while the minimum can dip as low as 1°C (35°F). This means travelers should be prepared for a wide range of temperatures, so packing layers is advisable.
In Grand Haven in August, the precipitation amount is 59 mm (2.3 in) over the course of 10 days.
In Grand Haven in August, humidity is 80%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly uncomfortable and necessitating frequent breaks to stay hydrated.
In Grand Haven 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 Grand Haven.
UV Risk Categories
Weather in Grand Haven varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Grand Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (12°F) | 26 mm (1.0 inches) | 94% | low |
| February Weather | -13°C (10°F) | 26 mm (1.0 inches) | 94% | low |
| March Weather | -6°C (22°F) | 32 mm (1.3 inches) | 89% | moderate |
| April Weather | 2°C (35°F) | 28 mm (1.1 inches) | 86% | moderate |
| May Weather | 10°C (51°F) | 44 mm (1.7 inches) | 82% | high |
| June Weather | 15°C (58°F) | 85 mm (3.3 inches) | 80% | high |
| July Weather | 16°C (61°F) | 94 mm (3.7 inches) | 83% | high |
| August Weather | 15°C (59°F) | 59 mm (2.3 inches) | 80% | high |
| September Weather | 9°C (49°F) | 48 mm (1.9 inches) | 83% | moderate |
| October Weather | 2°C (37°F) | 41 mm (1.6 inches) | 86% | moderate |
| November Weather | -6°C (21°F) | 50 mm (2.0 inches) | 91% | low |
| December Weather | -10°C (15°F) | 23 mm (0.9 inches) | 95% | low |