August Weather in Grand Haven, United States

Last updated: February 24, 2025

Experience the vibrant summer weather of Grand Haven, United States, in August, where temperatures reach a comfortable maximum of 28°C (82°F) and an average of 22°C (72°F), creating the perfect backdrop for outdoor activities. Nights cool down to a refreshing 14°C (57°F), making evenings enjoyable. While August sees 63 mm (2.5 in) of precipitation over 9 days, the air remains pleasantly humid at 79%, contributing to the region's lush greenery. Prepare to immerse yourself in the beauty of late summer, where the warmth invites exploration and the occasional rain adds to the charm of this picturesque lakeside town.

August Temperature in Grand Haven

In Grand Haven, Michigan, August brings a delightful taste of summer, characterized by mild to warm temperatures that make it one of the year’s most enjoyable months. With a minimum of 14°C (57°F) and an average temperature of 22°C (72°F), this month is a welcome contrast to the biting cold of winter. The maximum temperature can reach a pleasant 28°C (82°F), offering plenty of opportunities for outdoor activities and beach days. This trend of rising warmth from July continues, as August often serves as the last hurrah of summer before the cooler temperatures of fall set in. The steady increase in temperatures throughout the summer creates a lush backdrop, perfect for enjoying the natural beauty of the area.

August Weather in Grand Haven: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Grand Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec282835425365727266554135
Data source: Temperature data for Grand Haven generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Grand Haven

In August, Grand Haven experiences a moderate shift in precipitation patterns, recording 63 mm (2.5 inches) of rainfall over 9 days. This marks a notable decrease compared to the preceding months, particularly July, which only saw 59 mm over 8 days. As summer begins to wane, August’s rainfall is a contrast to the heavier precipitation that characterized the spring, with May's peak at 128 mm (5.0 in) and April's substantial 101 mm (4.0 in). Nonetheless, this month still contributes to the overall water balance, leading into the wetter fall months, such as September and October, where totals jump significantly. Overall, August serves as a transitional period, bridging the lighter summer rains to the impending autumn downpours.

August Precipitation Trends in Grand Haven

The chart displays monthly precipitation patterns in Grand Haven, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec73757110112811859631061478477
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Grand Haven

In August, Grand Haven experiences a slight dip in humidity, averaging around 79%, marking a continuation of the decreasing trend observed since July. This decline follows a pattern seen throughout the summer months, where humidity levels gradually fall from a peak of 87% in April to their lowest in July. As autumn approaches, September maintains this moderate humidity, suggesting a gradual transition into the crisper air of fall. Overall, the humidity in Grand Haven showcases a fascinating shift, beginning with a high, consistent presence in winter and transitioning to a more variable but generally lower level as the seasons change.

August Average Humidity in Grand Haven

This chart illustrates the average monthly humidity levels in Grand Haven, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Grand Haven

In August, Grand Haven experiences a UV Index of 9, placing it in the very high exposure category, with a burn time of just 15 minutes. This marks a slight decline from the peak UV Index of 10 observed in the previous months of June and July, yet it still signals the ongoing need for sun protection. As summer progresses, the trends indicate a persistent high level of UV radiation, urging residents and visitors alike to be vigilant while enjoying the sunny shores. As the season shifts toward the end of summer, the UV Index will begin to taper off, but for now, it’s essential to stay informed and safe. For more insights, check out the detailed UV index in August at Grand Haven UV Index.

Maximum UV Index Levels in Grand Haven for August

The chart shows the monthly maximum UV Index (UVI) for Grand Haven in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Grand Haven August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Grand Haven

In August, Grand Haven basks in the glow of 344 hours of sunshine, maintaining its status as a summer favorite for sun-seekers. The month stands out just slightly below the peak of July, which boasts a remarkable 366 hours of golden rays. This vibrant trend reflects a steady increase in sunshine hours from the early months of the year, starting with a modest 89 hours in January and blossoming into summer's full brilliance. As the season transitions into September with 284 hours, it's clear that August marks a delightful crescendo in the warm embrace of sunlight, inviting residents and visitors alike to savor the beauty of summer before the days begin to wane.

Monthly Sunshine Duration in Grand Haven: August Highlighted

The August sunshine duration represents the total number of hours Grand Haven experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec89h162h246h252h300h334h366h344h284h207h166h125h
Data source: Grand Haven August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Grand Haven During August

In Grand Haven, Michigan, August stands out as a month where the sun shines brighter, boasting a 51% chance of sunny weather. This trend of increasing sunshine begins in March, where the likelihood of clear skies begins to rise significantly. After a peak in July at 48%, August sees a promising jump, making it one of the sunniest months of the year. Following August, September continues this sunny streak with a 54% chance, indicating that late summer is an ideal time for outdoor activities in this picturesque lakeside town. As summer draws to a close, the transition to fall brings a noticeable drop in sunshine, highlighting August as a peak moment to soak up the sun before cooler months set in.

Percentage of Sunny Days in August in Grand Haven

The chart illustrates the percentage of sunny days in Grand Haven throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Grand Haven experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%21%50%42%40%46%48%51%54%33%31%23%
Data source: Grand Haven August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Grand Haven in August

In August, Grand Haven basks in approximately 13 hours of daylight, providing a delightful balance between the long days of summer and the shorter days ahead. Following a peak of 15 hours in June, daylight begins its gradual decline, first diminishing to 14 hours in July and then to 13 hours this month. This gradual transition from the sun-soaked days of summer towards the cooler tones of autumn signals a time when outdoor activities remain plentiful, yet the subtle shift in daylight hints at the approaching change of seasons. As September nears, residents and visitors can savor the lingering warmth of summer afternoons, while also embracing the beauty of early autumn that lies just around the corner.

Average Daylight Hours in Grand Haven for August

The chart illustrates the variation in daylight duration in Grand Haven throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 24m10h 32m11h 57m13h 26m14h 40m15h 17m14h 57m13h 50m12h 26m10h 58m9h 41m9h 2m
Data source: Grand Haven daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Grand Haven

In Grand Haven, the month of August brings a noticeable dip in wind activity, with an average speed of just 3.4 m/s (8 mph). This trend marks it as the calmest month of the year, following a gradual decline in wind speeds from the breezier months of May and June. Interestingly, as summer progresses, the winds seem to lose their vigor, giving way to a more tranquil atmosphere. In contrast, the transition to September sees a resurgence, as average wind speeds rise to 4.8 m/s (11 mph), hinting at a shift in seasonal dynamics. Overall, the steady decline leading into August highlights a characteristic summer lull before the winds pick up again, painting a vivid picture of Grand Haven’s ever-changing maritime climate.

Average August Wind Speed in Grand Haven

The chart displays monthly wind speed patterns in Grand Haven, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.75.15.34.64.34.03.93.4 m/s4.84.76.26.3
Data source: Grand Haven August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Grand Haven Compares to Other Months

The weather in Grand Haven changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Grand Haven and find detailed weather information for every month.

When comparing the weather of August and January, the stark differences are immediately apparent. August enjoys much milder temperatures, with averages around 22°C (72°F) and highs reaching up to 28°C (82°F), while January experiences a bitter chill, with average temperatures plummeting to -2°C (29°F) and highs only around 9°C (48°F). Precipitation is similar in both months, with August receiving 63 mm over about 9 days and January getting 73 mm across approximately 12 days; however, January's humidity is notably higher at 87% compared to August's 79%. For a closer look at January weather specifics, you can visit Grand Haven weather in January.

August and February present contrasting weather patterns. In August, temperatures range from a comfortable 14°C (57°F) to a warm 28°C (82°F), with average precipitation of 63 mm (2.5 in) occurring over about 9 days, and humidity around 79%. In stark contrast, February sees frigid temperatures with a minimum of -15°C (5°F) and a maximum of 12°C (53°F). The month experiences slightly higher precipitation, totaling 75 mm (3.0 in) over 14 days, along with increased humidity at 87%. For a detailed look at what to expect, check out Grand Haven weather in February.

August and March bring strikingly different weather patterns. In August, temperatures range from a minimum of 14°C (57°F) to a comfortable maximum of 28°C (82°F), with an average of 22°C (72°F). The month experiences about 63 mm (2.5 in) of precipitation over approximately 9 days and boasts a humidity level of 79%. In contrast, March sees a more frigid landscape with temperatures ranging from a chilly -14°C (7°F) to a maximum of 14°C (58°F), and an average temperature of just 1°C (35°F). This month also has slightly higher precipitation at 71 mm (2.8 in) over about 11 days and a humidity level of 86%. For more details on the weather in March, you can check Grand Haven weather in March.

When comparing the weather in August and April, we see a stark difference in temperatures and conditions. August offers a much warmer climate, with average temperatures around 22°C (72°F) and maximums reaching 28°C (82°F), while April feels quite brisk, with an average temperature of just 5°C (42°F) and maximums averaging 17°C (64°F).

Precipitation is also notable; August experiences 63 mm (2.5 in) over about 9 days, whereas April is wetter, with 101 mm (4.0 in) spread across 13 days. Additionally, humidity levels in August sit at 79%, slightly lower than April’s 87%, contributing to a very different feel between these months. For more details, check out Grand Haven weather in April.

When comparing the weather in August to that of May, notable differences emerge. August typically enjoys warmer temperatures, with a minimum of 14°C (57°F) and an average of 22°C (72°F), while May starts cooler, with a minimum temperature of 1°C (35°F) and an average of 12°C (53°F). Although both months experience some precipitation, May has a higher total rainfall of 128 mm (5.0 in) over 13 days, compared to August's 63 mm (2.5 in) over 9 days. Humidity levels are slightly lower in August at 79%, compared to May's 82%. For more details, you can check Grand Haven weather in May.

When comparing the weather between June and August, August tends to be warmer with average temperatures of 22°C (72°F), compared to June's average of 18°C (65°F). The maximum temperature in August reaches 28°C (82°F), slightly higher than June's peak of 27°C (81°F). However, June experiences more precipitation, with 118 mm (4.7 in) over 12 days, while August has only 63 mm (2.5 in) spread over 9 days. Humidity remains relatively similar in both months, with June at 81% and August at 79%. For a detailed look at June's weather patterns, visit Grand Haven weather in June.

In comparing the weather of August to that of July, we see that both months have similar average temperatures, with August recording a minimum temperature of 14°C (57°F) and a maximum of 28°C (82°F), while July has a slightly higher minimum of 15°C (60°F) and a maximum of 29°C (85°F). Precipitation levels are also comparable, with August experiencing 63 mm (2.5 in) over 9 days and July with 59 mm (2.3 in) over 8 days, indicating that both months are relatively wet. However, August is slightly more humid at 79%, compared to July's 78%. For more detailed weather information, you can refer to Grand Haven weather in July.

In comparing the weather of August and September, we observe a noticeable shift in temperatures and precipitation patterns. August typically enjoys warmer average temperatures, ranging from a minimum of 14°C (57°F) to a maximum of 28°C (82°F), while September sees cooler averages, with temperatures dropping to a minimum of 9°C (48°F) and an average of 19°C (66°F). Although both months experience the same number of rainy days at 9, September has significantly higher precipitation, accumulating 106 mm (4.2 in) compared to August's 63 mm (2.5 in). Interestingly, humidity remains consistent at 79% in both months, providing a persistent level of mugginess. For a more detailed look at September weather, check out Grand Haven weather in September.

August typically boasts warmer temperatures, with averages around 22°C (72°F) and highs reaching 28°C (82°F), making it a pleasant summer month. In contrast, October sees a significant drop in temperatures, averaging around 13°C (55°F) and peaking at 24°C (75°F). While August experiences moderate precipitation of 63 mm (2.5 in) over about 9 days, October doubles this with 147 mm (5.8 in) spread over 17 days, indicating a wetter climate. Additionally, humidity levels remain high in both months, with October slightly higher at 82%. For detailed insights about October weather, visit Grand Haven weather in October.

August and November present a stark contrast in weather conditions. In August, temperatures range from a mild 14°C (57°F) at night to a warm average of 22°C (72°F) during the day, reaching a maximum of 28°C (82°F). The month sees about 63 mm (2.5 inches) of precipitation over 9 days and enjoys a relatively high humidity level of 79%. In contrast, November experiences much cooler temperatures, with minimums plummeting to -5°C (23°F) and an average of only 5°C (42°F). Although the maximum temperature can rise to 18°C (65°F), the month is characterized by increased precipitation at 84 mm (3.3 inches) over 12 days and even higher humidity levels at 87%. For more detailed insights on the weather during this month, you can check Grand Haven weather in November.

August and December present strikingly different weather patterns. In August, temperatures range from a mild 14°C (57°F) at night to a warm 28°C (82°F) during the day, with an average of 22°C (72°F). The humidity is relatively high at 79%, and precipitation is noted on about 9 days, amounting to 63 mm (2.5 in). In contrast, December sees a dramatic drop in temperatures, with lows plummeting to -13°C (9°F) and daytime highs reaching only 13°C (56°F), averaging a chilly 2°C (35°F). This winter month experiences higher humidity at 86% and slightly increased precipitation over 12 days, totaling 77 mm (3.0 in). For more detailed weather insights, check out Grand Haven weather in December.

Compare Grand Haven's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Grand Haven

August in Grand Haven brings a delightful blend of warm temperatures and moderate humidity, setting it apart from the cooler months earlier in the year. With an average temperature of 22°C (72°F) and occasional peaks hitting 28°C (82°F), the month invites visitors to indulge in outdoor activities by the lake. Though rain graces about a third of the days, the overall precipitation is reasonable, allowing for plenty of sunny spells. As summer bids farewell, August offers a transition with its pleasant warmth, making it an ideal time to explore the beauty of Grand Haven before ushering in the cooler fall months. For more insights into what to expect from the weather throughout the year, check out Grand Haven Climate.