When to go · Portsmouth
Portsmouth in August
Avoid month. Listed as a month to avoid: Jul–Aug (heat and humidity), Jan–Feb (ice on the river roads).
Key facts
- Verdict
- Avoid
- Temperature
- 30°C (86°F)86°F (30°C) / 17°C (63°F)63°F (17°C)
- average high / low
- Rain days
- 9
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Jul–Aug (heat and humidity), Jan–Feb (ice on the river roads).
Is another month better than August?
August is rated avoid. These months rate higher:
Weather in August
- PortsmouthHighs around 30 °C (86 °F), lows around 17 °C (63 °F), rain on about 9 daysHighs around 86 °F (30 °C), lows around 63 °F (17 °C), rain on about 9 days
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 Portsmouth, side by side.
Verdict
Aug: Avoid
May: Great (better)
Daytime high
Aug: 30 °C (86 °F)86 °F (30 °C)
May: 24 °C (75 °F)75 °F (24 °C)
Night low
Aug: 17 °C (63 °F)63 °F (17 °C)
May: 11 °C (52 °F)52 °F (11 °C)
Rain days
Aug: 9 (better)
May: 12
Crowds
Aug: High
May: Medium
Prices
Aug: High
May: Medium
Festivals listed
Aug: 0
May: 1
August: Listed as a month to avoid: Jul–Aug (heat and humidity), Jan–Feb (ice on the river roads).
May: Inside Portsmouth's best window: May–Jun, Sep–Oct.
Portsmouth: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen