Castro Valley Weather in August

August in Castro Valley typically sees daytime highs of 24°C (75°F) and nighttime lows of 13°C (55°F). With the least rainfall of the year, it's a reliably dry month. It falls within the summer season.

Rainfall in Castro Valley in August

This month is perfect for exploring, with the driest conditions of the year. Historically, August sees about 0 days of rain, with a monthly average of 0.1 mm (0 in).

Temperature in Castro Valley in August

Weather in Castro Valley is at its excellent in August. Highs reach 24°C (75°F), while nights settle around 13°C (55°F). August marks the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Castro Valley in August

Enjoy a sunny month with about 288 hours of sunshine, the clear skies make Castro Valley even more beautiful.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Castro Valley's climate page.

Castro Valley Temperature in August

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 0%  

Precipitation 0.1 mm (0 in)  

Rainy days 0 days  

Humidity 75% *  

Sunshine 288 hours *  

Percentage Sunshine 68% *  

* Data from: San Francisco, the United States of America (27 KM, 17 Miles).

What to Wear in Castro Valley in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Castro Valley in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Castro Valley's climate page.

More climate data for Castro Valley

Temperature Rainfall Sunshine Humidity

See the full Castro Valley climate overview or explore weather in the United States of America.