When to go · Portola Valley

Portola Valley in August

Avoid month. Listed as a month to avoid: Dec–Feb (rain, some trails muddy), Jul–Aug (heat, fire risk).

Key facts

Verdict: Avoid
Temperature: 27°C (81°F)81°F (27°C) / 14°C (57°F)57°F (14°C); average high / low
Rain days: 1
Crowds: High; United States overall
Prices: High; United States overall

Plan around it

Verdict

AvoidBest and avoid months for Portola Valley

Listed as a month to avoid: Dec–Feb (rain, some trails muddy), Jul–Aug (heat, fire risk).

August is rated avoid. These months rate higher:

Long-term averages

Portola ValleyHighs around 27 °C (81 °F), lows around 14 °C (57 °F), rain on about 1 dayHighs around 81 °F (27 °C), lows around 57 °F (14 °C), rain on about 1 day

United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.

Weather, crowds and prices for any two months in Portola Valley, side by side.

First month

Second month

August: Listed as a month to avoid: Dec–Feb (rain, some trails muddy), Jul–Aug (heat, fire risk).

March: Inside Portola Valley's best window: Mar–May, Sep–Nov.

Portola Valley: figures are long-term averages from this guide, not a forecast.

Nothing unusual for the weather this month.