Average temperature in Portsmouth
The mean minimum and maximum temperatures over the year in Portsmouth (), Dominica.
- On average, the temperatures are always high.
- On average, the warmest month is September with 29°C.
- On average, the coolest month is March with 27°C.
- The average annual maximum temperature is 28°C.
- The average annual minimum temperature is 25°C.
Weather Forecasts for Portsmouth
Wed Apr 24
32°C | 23°C
E 
22 km/h
22 km/h
partly cloudy and no rain
Thu Apr 25
31°C | 23°C
E 25 km/h
25 km/h1.6 mm
partly cloudy and small chance of rain
Fri Apr 26
31°C | 22°C
E 22 km/h
22 km/h1.6 mm
broken clouds and small chance of rain
