August Weather in Big Bear Lake, United States

Last updated: February 24, 2025

Experience the August weather in Big Bear Lake, United States, where the warm climate invites outdoor enthusiasts and nature lovers alike! With maximum temperatures soaring to 37°C (98°F) and a comfortable average of 25°C (77°F), visitors can enjoy plenty of sunshine. The nights bring a refreshing drop to a minimum of 12°C (55°F), perfect for cozy gatherings under the stars. While there is some moisture in the air – with 19 mm (0.8 in) of precipitation over 5 days and humidity sitting at a pleasant 28% – the majority of the month remains dry and inviting. Embrace the warmth and beauty that August has to offer in this picturesque destination!

August Temperature in Big Bear Lake

In August, Big Bear Lake basks in the warmth of summer, with temperatures displaying a delightful range. The minimum temperature settles at a comfortable 12°C (55°F), while the average rises to a pleasant 25°C (77°F), ideal for outdoor adventures. Maxing out at 37°C (98°F), the heat reaches its peak, inviting visitors to enjoy sparkling lake activities and summer hikes. This month marks a transitional phase, as temperatures dip slightly from the record highs seen in July, setting the stage for the cooler autumn months ahead. Overall, August offers the perfect blend of warm days and cool evenings, making it a prime time to experience the stunning beauty of Big Bear Lake.

August Weather in Big Bear Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Big Bear Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454649576172777771615345
Data source: Temperature data for Big Bear Lake 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 Big Bear Lake

In August, Big Bear Lake experiences a moderate dip in precipitation, with only 19 mm (0.8 in) of rain spread over five days. This aligns with a general downward trend in rainfall as summer peaks, following a wetter July that recorded 29 mm (1.1 in). The summer months, typically characterized by lower precipitation, pave the way for a drier transition into autumn, with August being notably less wet than the earlier months of the year. As the region heads into September, the precipitation further decreases, reflecting the gradual shift from the summer's warm embrace to the cooler embrace of fall. Despite the reduced rainfall, August's weather remains crucial for maintaining the health of the landscape, ensuring lush greenery persists in this scenic mountain locale.

August Precipitation Trends in Big Bear Lake

The chart displays monthly precipitation patterns in Big Bear Lake, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4446422114529191291645
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Big Bear Lake

In Big Bear Lake, August is characterized by its notably low humidity level, dropping to just 28%. This marks the continuation of a trend that begins in the spring, where humidity steadily decreases from 57% in April to its summer lows. The descending humidity escalates over the warmer months, peaking at a mere 29% in July before reaching its annual low in August. This dry spell contrasts sharply with the dampness of the winter months, where humidity levels soar to 76% in January and remain elevated until the spring thaw. As summer transitions into early fall, humidity levels begin to climb again, with September seeing a significant increase to 41%. The overall trend highlights Big Bear Lake's seasonal shifts, showcasing a notable drop in humidity that contributes to the region's comfortable summer climate.

August Average Humidity in Big Bear Lake

This chart illustrates the average monthly humidity levels in Big Bear Lake, 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.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%69%57%45%34%29%28%42%54%68%75%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Big Bear Lake

In Big Bear Lake, August continues the trend of extreme UV exposure akin to the peak summer months. With a UV Index of 11, the risk of harm from unprotected sun exposure remains significant, with a burn time of just 10 minutes. This mirrors June and July, which also displayed an Index of 12, highlighting the need for sun safety measures during these sunny days. As the summer season transitions into fall, the UV index gradually declines, still staying at a high level compared to the winter months. For those planning outdoor activities in August, be sure to stay protected and informed. For more details on UV levels, check out Big Bear Lake UV Index.

Maximum UV Index Levels in Big Bear Lake for August

The chart shows the monthly maximum UV Index (UVI) for Big Bear Lake 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.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110854
Data source: Big Bear Lake 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 Big Bear Lake

August in Big Bear Lake basks in a delightful average of 363 sunshine hours, making it a perfect time for outdoor enthusiasts to enjoy the natural beauty of this stunning locale. Following a peak in July with 383 hours of radiant sunshine, August remains vibrant and warm, providing ample opportunity for hiking, fishing, and leisurely lakeside picnics. As summer transitions into fall, daylight begins to wane, yet the month still boasts significantly more sunshine than the upcoming months. With an impressive increase from the wintry lows of just 190 hours in January, the enduring summer sun makes August a memorable highlight of the year in Big Bear Lake.

Monthly Sunshine Duration in Big Bear Lake: August Highlighted

The August sunshine duration represents the total number of hours Big Bear Lake 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.
JanFebMarAprMayJunJulAugSepOctNovDec190h244h295h328h370h379h383h363h322h299h258h228h
Data source: Big Bear Lake August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Big Bear Lake During August

In Big Bear Lake, August boasts a promising 82% chance of sunny weather, making it one of the year's best months for basking in the sun. This trend follows a pattern where the likelihood of sunny days typically peaks during the summer months, notably in May and September, with August nestled comfortably in between. As the year advances from the frigid depths of winter, the chances of sunshine steadily rise, culminating in this peak before a gradual decline in the fall. So, whether you're planning a weekend getaway or a longer summer retreat, you can expect plenty of bright, sunny days to enjoy the stunning scenery and outdoor activities that this charming destination has to offer.

Percentage of Sunny Days in August in Big Bear Lake

The chart illustrates the percentage of sunny days in Big Bear Lake 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 Big Bear Lake experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%72%70%72%85%71%56%82%88%73%77%51%
Data source: Big Bear Lake August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Big Bear Lake in August

In Big Bear Lake, August brings a delightful 13 hours of daylight, mirroring the longer days of June and July. This slight dip in daylight duration signals the transition from the height of summer toward the cooler months ahead. As we move into September, daylight gradually decreases to 12 hours, reflecting the natural shift of the season. The pattern of daylight hours throughout the year showcases a gradual increase from 10 hours in January and February to a peak of 14 hours in June and July, before settling back into shorter days as winter approaches. This rhythm not only highlights the beauty of changing seasons but also invites residents and visitors to savor the abundant summer light while it lasts.

Average Daylight Hours in Big Bear Lake for August

The chart illustrates the variation in daylight duration in Big Bear Lake throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 9m10h 57m11h 59m13h 3m13h 57m14h 23m14h 8m13h 21m12h 20m11h 16m10h 21m9h 53m
Data source: Big Bear Lake daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Big Bear Lake

In Big Bear Lake, August brings a gentle average wind speed of 2.1 m/s (5 mph), maintaining the consistent breezy atmosphere characteristic of summer months. This slight dip from July's 2.0 m/s (4 mph) reflects a trend of subtle seasonal variations, as winds gradually transition from the lush, bustling warmth of summer to the cool, crisp whispers of autumn. Interestingly, the recent months have shown a steady wind speed, hovering around 2.0 to 2.5 m/s throughout the year, creating a comforting backdrop for both summer adventurers and winter enthusiasts alike. With each season bringing its own distinct charm, the winds of Big Bear Lake continue to weave a delightful tapestry of nature’s rhythm.

Average August Wind Speed in Big Bear Lake

The chart displays monthly wind speed patterns in Big Bear Lake, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.22.42.52.42.22.02.1 m/s2.02.12.02.1
Data source: Big Bear Lake August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Big Bear Lake Compares to Other Months

The weather in Big Bear Lake 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 Big Bear Lake and find detailed weather information for every month.

August and January present stark contrasts in weather. August boasts warm temperatures, with a minimum of 12°C (55°F) and an average high reaching up to 37°C (98°F), accompanied by low humidity levels at just 28%. The precipitation during this month is relatively minimal, averaging only 19 mm (0.8 in) over 5 days. In stark contrast, January experiences much cooler conditions, with temperatures ranging from a chilly -7°C (19°F) at night to a comfortable 22°C (72°F) during the day. The month is also wetter, with an average precipitation of 44 mm (1.7 in) over 4 days and significantly higher humidity at 76%. For more details, you can check Big Bear Lake weather in January.

August and February present stark contrasts in weather conditions. In August, temperatures can soar with a minimum of 12°C (55°F) and a blistering maximum of 37°C (98°F), bringing an average temperature of 25°C (77°F). The month experiences low humidity at 28% and only 19 mm (0.8 in) of precipitation over 5 days. In contrast, February is much cooler, with temperatures ranging from a chilling -5°C (23°F) to a mild 22°C (72°F), and an average of 8°C (46°F). This month sees significantly higher humidity at 80% and approximately 46 mm (1.8 in) of precipitation over the same number of days. For more details on February weather, visit Big Bear Lake weather in February.

August and March present strikingly different weather patterns. In August, temperatures soar, with averages around 25°C (77°F) and highs reaching a scorching 37°C (98°F). The month is relatively dry, experiencing only 19 mm (0.8 in) of precipitation over about 5 days, accompanied by low humidity at 28%. In contrast, March features a much cooler climate, with minimum temperatures dropping to -4°C (25°F) and average temperatures hovering around 9°C (49°F). It is also wetter, with 42 mm (1.6 in) of precipitation spread over 7 days and significantly higher humidity at 69%. For more detailed insights, check out Big Bear Lake weather in March.

In comparing the weather of August and April, it's clear that August is significantly warmer, with average temperatures around 25°C (77°F) and maximums reaching up to 37°C (98°F). In contrast, April has a cooler average temperature of 14°C (57°F), with highs of only 30°C (86°F). While both months experience a similar amount of precipitation—19 mm (0.8 in) in August and 21 mm (0.8 in) in April—the frequency of rainy days is higher in August at 5 days compared to just 2 days in April. Additionally, April's humidity is notably higher at 57%, while August maintains a comfortable 28%. For more detailed information, you can check out Big Bear Lake weather in April.

When comparing the weather in August to that in May, notable differences emerge. August experiences much warmer temperatures, with a minimum of 12°C (55°F) and an average of 25°C (77°F), soaring to a maximum of 37°C (98°F). In contrast, May has cooler temperatures, ranging from a minimum of 1°C (33°F) to an average of 16°C (61°F), and peaking at 33°C (92°F). Additionally, August has lower humidity at 28%, while May is more humid at 45%. Precipitation is relatively light in both months, with August receiving 19 mm (0.8 in) over 5 days and May slightly less at 14 mm (0.6 in) over 3 days. For more detailed insights, check out Big Bear Lake weather in May.

In comparing the weather between June and August, both months feature similar maximum temperatures that can reach as high as 37°C (99°F) and 37°C (98°F), respectively. However, June typically starts off cooler, with an average temperature of 22°C (72°F), while August is warmer with an average of 25°C (77°F). Precipitation is notably more frequent in August, with 19 mm (0.8 in) spread over 5 days, compared to June's minimal 5 mm (0.2 in) on just 1 day. Humidity levels are also slightly lower in August at 28%, compared to June's 34%. For a closer look at June weather specifics, you can check out Big Bear Lake weather in June.

In comparing the weather patterns of August and July, we observe that both months have similar average temperatures, with August having an average of 25°C (77°F), just like July. July tends to be slightly warmer, reaching a maximum of 38°C (101°F) compared to August's peak of 37°C (98°F). Precipitation in August is lighter, totaling 19 mm (0.8 in) over 5 days, whereas July has a higher total of 29 mm (1.1 in) spread over 6 days. Additionally, humidity levels are quite comparable, with August at 28% and July at 29%. For more detailed climate information, you can check Big Bear Lake weather in July.

August typically displays warmer weather compared to September, with average temperatures reaching 25°C (77°F) and maximums soaring up to 37°C (98°F). In contrast, September sees a drop in the average temperature to 22°C (71°F) and a minimum of 7°C (44°F), though it can still peak at 39°C (102°F). Precipitation is slightly lower in September at 12 mm (0.5 in) over just 2 days, compared to August's 19 mm (0.8 in) over 5 days. Additionally, September experiences higher humidity levels at 41%, making the air feel a bit more humid than the drier August, which only has 28%. For more details on September weather, visit Big Bear Lake weather in September.

August weather is characterized by warmer temperatures, with a minimum of 12°C (55°F) and an average high of 37°C (98°F), making it significantly hotter than October. In contrast, October sees a more moderate range, with temperatures dropping to a minimum of 2°C (36°F) and an average of 16°C (61°F). Additionally, while August experiences relatively low humidity at 28% and more rainfall spread over five days, October features higher humidity at 54% but significantly less rain, with only one day of precipitation amounting to 8 mm (0.3 in). For more details about the October weather in Big Bear Lake, you can check Big Bear Lake weather in October.

August and November present contrasting weather patterns. In August, temperatures are generally warm, with an average of 25°C (77°F) and maximums soaring up to 37°C (98°F). The air is dry, with only 19 mm of precipitation over about five days and a humidity level of 28%. In contrast, November experiences much cooler conditions, where the average temperature drops to 12°C (54°F) and minimums can fall to -3°C (27°F). The month has slightly less precipitation at 16 mm over just two days, but the humidity rises significantly to 68%. For a more detailed look at November weather in this region, check out Big Bear Lake weather in November.

The weather in August is characterized by warm temperatures, with a minimum of 12°C (55°F) and an average of 25°C (77°F), reaching a maximum of 37°C (98°F). This month experiences relatively low precipitation, totaling 19 mm (0.8 in) over about five days and with low humidity at 28%. In contrast, December brings a stark change with much cooler temperatures, ranging from a minimum of -7°C (19°F) to an average of 7°C (46°F) and peaking at 22°C (71°F). December also sees increased precipitation at 45 mm (1.8 in) across four days, alongside significantly higher humidity levels at 75%. For more detailed information on the winter weather conditions, you can explore Big Bear Lake weather in December.

Compare Big Bear Lake's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Big Bear Lake

August at Big Bear Lake offers a delightful contrast to the cooler months, as temperatures often peak in the high 30s °C, providing perfect conditions for summer activities. With an average of 25°C, visitors can enjoy warm days and pleasant evenings, while the low humidity of 28% ensures a comfortable outdoor experience. Though there's a slight chance of rain with about 19 mm over five days, the overall dry spell emphasizes the transition into late summer. For those curious about the nuances of weather throughout the year, exploring the detailed information at Big Bear Lake Climate will enhance your understanding of this beautiful destination.