Castaic Weather in August

Castaic in August averages 35°C (95°F) during the day and 17°C (63°F) at night. Minimal rainfall is typical for this time of year.

Rainfall in Castaic in August

Based on our climate data of the past 30 years, about 0 days of rain are anticipated, with 0.2 mm (0.01 in) on average.

Temperature in Castaic in August

In August, expect very high temperatures in Castaic, with highs of 35°C (95°F) and lows of 17°C (63°F) at night. It's usually most comfortable outside during the morning and later in the day. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. Although these are the average temperatures, expect warmer days occasionally. Wear cool clothing and stay hydrated to manage the heat.

Sunshine in Castaic in August

Enjoy a sunny month with about 347 hours of sunshine, the clear skies make Castaic even more beautiful.

If you're looking for dry conditions and comfortable temperatures, August may not be the ideal month to visit Castaic. Our weather planner can help you explore destinations with more pleasant weather conditions.