August weather forecast
Norwalk, CA

Weather patterns in August maintain the heat and humidity that define the summer season in Norwalk. August sees the highest temperature of the year, averaging around 83.1°F (28.4°C), confirming its reputation as the hottest month. Despite the high temperatures, rainfall remains minimal, maintaining the warm and dry conditions that mark the Californian summer. Persistent sunny spells coupled with the heat, make August an ideal time for summer activities and sightseeing. Cooling coastal breezes also provide a welcome respite from the intense summer heat.

Temperature

August tends to be the warmest month, with temperatures averaging a daily high of 83.1°F (28.4°C) and a low of 65.7°F (18.7°C).

Heat index

During August, the heat index is calculated to be a tropical 86°F (30°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

In Norwalk, the average relative humidity in August is 60%.

Rainfall

In Norwalk, in August, during 2.1 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Norwalk, California, during the entire year, the rain falls for 49.5 days and collects up to 7.05" (179mm) of precipitation.

Daylight

The average length of the day in August is 13h and 22min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:52 pm. On the last day of August, in Norwalk, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 during August leads to these advisories:
Shun overexposure. Protection from sun ravages is indispensable. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.