California · United States
Castro Valley travel guide
Castro Valley is a city in California, United States, home to about 66,000 people.
- Best months
- April to October
- Nearest airport
- OAK14 km · Oakland San Francisco Bay Airport
- Currency
- USDUnited States dollar
- Time zone
- America/Los Angeles
- Language
- Carolinian, Chamorro, Hawaiian
When to go
The best time to visit Castro Valley
The most comfortable months for a city stay in Castro Valley are April to October. September is the warmest month, with average highs of 24 °C; December is the wettest, with about 119 mm of rain.
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
Getting there
Getting to Castro Valley: airports and arrival
The nearest airport with scheduled flights is Oakland San Francisco Bay Airport (OAK), about 14 km from the city centre in a straight line; San Carlos Airport (SQL, 28 km) and San Francisco International Airport (SFO, 30 km) are also within reach.
OAK · Oakland San Francisco Bay Airport
SQL · San Carlos Airport
SFO · San Francisco International Airport
Questions
Castro Valley: questions travellers ask
When is the best time to visit Castro Valley?
The most comfortable months for a city stay in Castro Valley are April to October. September is the warmest month, with average highs of 24 °C; December is the wettest, with about 119 mm of rain.
Which airport is closest to Castro Valley?
The nearest airport with scheduled flights is Oakland San Francisco Bay Airport (OAK), about 14 km from the city centre in a straight line; San Carlos Airport (SQL, 28 km) and San Francisco International Airport (SFO, 30 km) are also within reach.
What currency is used in Castro Valley?
United States dollar (USD).
Nearby
Destinations near Castro Valley
Sources: city facts from Wikidata and Wikipedia; airports from OurAirports; climate from CRU TS v4.10 (University of East Anglia Climatic Research Unit), 1991–2020 monthly means, 0.5° grid; places to stay, guest scores and amenities from each operator's own public pages. How this guide is made.