August weather forecast
Bethel Island, CA

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Weather in August

The last month of the summer, August, is also a hot month in Bethel Island, California, with temperature in the range of an average high of 87.4°F (30.8°C) and an average low of 57.4°F (14.1°C).

Temperature

The introduction of August sees an average high-temperature of a still hot 87.4°F (30.8°C), hardly deviating from July. During August, Bethel Island detects a significant contrast from its daytime temperatures, with nights averaging at a moderate 57.4°F (14.1°C).

Heat index

The heat index in August is evaluated at a tropical 93.2°F (34°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

In August, the average relative humidity in Bethel Island is 56%.

Rainfall

The months with the least rainfall are July and August Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.

Snowfall

In Bethel Island, snow does not fall in January through November.

Daylight

In August, the average length of the day is 13h and 35min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of August, sunrise is at 6:36 am and sunset at 7:36 pm PDT.

Sunshine

In Bethel Island, California, the average sunshine in August is 11.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the UV index of 6 transforms into the following advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

How hot does it get in Bethel Island in August?

During August, Bethel Island experiences an average high-temperature of 87.4°F (30.8°C) and a low-temperature of 57.4°F (14.1°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 93.2°F (34°C).

What is the average humidity in August in Bethel Island?

In Bethel Island, California, the average relative humidity in August is 56%.

What is the driest month in Bethel Island?

July and August are months with the least rain in Bethel Island when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

How much does it rain in Bethel Island in August?

In Bethel Island, California, in August, during 0.8 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

When it does not snow in Bethel Island?

January through November are months without snowfall.

What is the average length of the day in August in Bethel Island?

The average day length in August in Bethel Island, California, is 13h and 35min.

What time are sunrise and sunset in August in Bethel Island?

On the first day of August in Bethel Island, California, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:36 pm PDT.

How long on average sun shines in August in Bethel Island?

In August, the average sunshine duration in Bethel Island, California, is 11.9h.

What is the month with the highest UV index in Bethel Island?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Bethel Island.

What is the UV index reading in August in Bethel Island?

In Bethel Island, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bethel Island, CA

Average temperature in August - Bethel Island, CA
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in August: 57.4°F

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in August
Bethel Island, CA

Average pressure in August - Bethel Island, CA
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Bethel Island, CA

Average wind speed in August - Bethel Island, CA
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average humidity in August
Bethel Island, CA

Average humidity in August - Bethel Island, CA
  • Average humidity in August: 56%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is September (52%).

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Average rainfall in August
Bethel Island, CA

Average rainfall in August - Bethel Island, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in August
Bethel Island, CA

Average rainfall days in August - Bethel Island, CA
  • Average rainfall days in August: 0.8 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall days in August
Bethel Island, CA

Average snowfall days in August - Bethel Island, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in August /
Average sunshine in August
Bethel Island, CA

Average daylight in August / Average sunshine in August - Bethel Island, CA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in August
Bethel Island, CA

Average sunshine days in August - Bethel Island, CA
  • Average sunshine days in August: 29.8 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in August
Bethel Island, CA

Average UV index in August - Bethel Island, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in August
Bethel Island, CA

Average cloud cover in August - Bethel Island, CA
  • Average cloud cover in August: 7

The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in August
Bethel Island, CA

Average visibility in August - Bethel Island, CA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Bethel Island, California, USA

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