August weather forecast
Bethel Island, CA

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Weather in August

The last month of the summer, August, is another hot month in Bethel Island, California, with an average temperature fluctuating between 87.4°F (30.8°C) and 57.4°F (14.1°C).

Temperature

With the start of August, Bethel Island measures an average high-temperature of a still tropical 87.4°F (30.8°C), not significantly differing from July's 88.5°F (31.4°C). Bethel Island sees a consistent average low-temperature of 57.4°F (14.1°C) in August, indicating a substantial decrease from the day's temperature.

Heat index

In August, the heat index is computed to be a tropical 93.2°F (34°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

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

Rainfall

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

Snowfall

January through November are months without snowfall.

Daylight

In Bethel Island, the average length of the day in August 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

The average sunshine in August is 11.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

Is it hot during August?

The average high-temperature, in August, in Bethel Island, is 87.4°F (30.8°C), while the average low-temperature is 57.4°F (14.1°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 93.2°F (34°C).

What is the average humidity in August?

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

What is the driest month?

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

How much does it rain in Bethel Island in August?

In Bethel Island, in August, it is raining for 0.8 days, with typically 0.04" (1mm) of accumulated precipitation.

When it does not snow?

January through November are months without snowfall.

How many hours of daylight does Bethel Island have in August?

The average day length in August is 13h and 35min.

When is the sunrise / sunset in August?

In August, on the first day of the month, 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 many hours of sunshine does Bethel Island have in August?

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

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
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).

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).

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).

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%).

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").

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).

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).

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).

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).

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).

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).

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).

Bethel Island, California, USA

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