Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The high-temperature during August, registering at a still warm 76.6°F (24.8°C), holds the same measure as the previous month. An average low-temperature of 56.8°F (13.8°C) is observed during August nights in Hercules.Humidity
The average relative humidity in August is 69%.Rainfall
The months with the least rainfall in Hercules are July and August Rain falls for 1.1 days and accumulates 0.04" (1mm) of rain.Ocean temperature
In Hercules, in August, the average water temperature is 56.8°F (13.8°C).Note: Swimming in 56.8°F (13.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
The average length of the day in August is 13h and 35min.On the first day of August, sunrise is at 6:12 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:39 pm PDT.
Sunshine
The average sunshine in August in Hercules is 11.7h.UV index
April through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In August, the maximum UV index of 5 suggests these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August in Hercules?
What is the average humidity in August in Hercules?
What is the driest month in Hercules?
How many days does it rain in August in Hercules?
What is the ocean temperature in August in Hercules?
What is the average length of the day in August in Hercules?
When are sunrise and sunset in August in Hercules?
How many hours of sunshine does Hercules have in August?
What are the months with the highest UV index in Hercules?
What is the UV index intensity in August in Hercules?
Average temperature in August
Hercules, CA
- Average high temperature in August: 76.6°F
The warmest month (with the highest average high temperature) is September (77.5°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (43.9°F).
Average pressure in August
Hercules, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
Hercules, CA
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is May (7.5mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in August
Hercules, CA
- Average humidity in August: 69%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall in August
Hercules, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (2.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in August
Hercules, CA
- Average rainfall days in August: 1.1 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (1.1 days).
Average sea temperature in August
Hercules, CA
- Average sea temperature in August: 56.8°F
The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).
Average daylight in August /
Average sunshine in August
Hercules, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in August
Hercules, CA
- Average sunshine days in August: 27.3 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in August
Hercules, CA
- Average UV index in August: 5
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Hercules, CA
- Average cloud cover in August: 15
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in August
Hercules, 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).
Hercules, California, USA
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