When to go · Portsmouth

Portsmouth in September

Avoid month. Listed as a month to avoid: Jul–Oct (hurricane season; check forecasts and local advisories).

Key facts

Verdict: Avoid
Temperature: 31°C (88°F)88°F (31°C) / 24°C (75°F)75°F (24°C); average high / low
Rain days: 16
Crowds: Low; Dominica overall
Prices: Low; Dominica overall

Plan around it

Verdict

AvoidBest and avoid months for Portsmouth

Listed as a month to avoid: Jul–Oct (hurricane season; check forecasts and local advisories).

September is rated avoid. These months rate higher:

Long-term averages

PortsmouthHighs around 31 °C (88 °F), lows around 24 °C (75 °F), rain on about 16 daysHighs around 88 °F (31 °C), lows around 75 °F (24 °C), rain on about 16 days
West coast (Roseau, Portsmouth), Dominica · Roseau, Soufrière, Mero, Portsmouthstorm or typhoon risk
Leeward side, drier and hot (26–32 °C (79–90 °F)); calm sea for diving and whale watching.Leeward side, drier and hot (79–90 °F (26–32 °C)); calm sea for diving and whale watching.

Dominica overall: Peak hurricane month (Maria hit on 18 Sep 2017).

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

First month

Second month

September: Listed as a month to avoid: Jul–Oct (hurricane season; check forecasts and local advisories).

February: Inside Portsmouth's best window: Feb–May.

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