When to go · Castro Valley
Castro Valley in August
Avoid month. Listed as a month to avoid: Jul–Sep (hot, dry, fire season).
Key facts
- Verdict
- Avoid
- Temperature
- 27°C (81°F)81°F (27°C) / 13°C (55°F)55°F (13°C)
- average high / low
- Rain days
- 1
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Jul–Sep (hot, dry, fire season).
Is another month better than August?
August is rated avoid. These months rate higher:
Weather in August
- Castro ValleyHighs around 27 °C (81 °F), lows around 13 °C (55 °F), rain on about 1 dayHighs around 81 °F (27 °C), lows around 55 °F (13 °C), rain on about 1 day
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Castro Valley, side by side.
Verdict
Aug: Avoid
Apr: Great (better)
Daytime high
Aug: 27 °C (81 °F)81 °F (27 °C)
Apr: 20 °C (68 °F)68 °F (20 °C)
Night low
Aug: 13 °C (55 °F)55 °F (13 °C)
Apr: 9 °C (48 °F)48 °F (9 °C)
Rain days
Aug: 1 (better)
Apr: 6
Crowds
Aug: High
Apr: Medium
Prices
Aug: High
Apr: Medium
Festivals listed
Aug: 0
Apr: 1
August: Listed as a month to avoid: Jul–Sep (hot, dry, fire season).
April: Inside Castro Valley's best window: Apr–Jun, Sep–Oct.
Castro Valley: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.