Climate and Weather in Portsmouth, Dominica

The climate of Portsmouth

According to Bridgat, Portsmouth is the second largest city on the Caribbean island of Dominica. The former capital is located in the northwest of the island. The reason for moving the capital to Roseau has been the outbreak of malaria. Ultimately, the capital never moved back from Roseau to Portsmouth. North of the town is the Cabrits National Park on a peninsula. This national park is an extinct volcano. Today there are hiking trails through the tropical rainforest. The most famous part of the park is Fort Shirley, a British occupation from the 18th century. Portsmouth has a tropical rainforest climate, which is indicated by the letter code Af within the Köppen-Geiger climate system. Heavy showers and clear skies alternate regularly. Throughout the year there is little difference in temperature in Portsmouth. There is a period when the maximum temperature is somewhat higher than in the rest of the year. This period is from June to September when the maximum temperature is about 30 degrees. From December to March, temperatures drop only a few degrees to about 28 degrees. Portsmouth receives a relatively large amount of rainfall throughout the year. There is no period of what you would call the dry season, although for the least rainfall, the best time to visit Portsmouth is from February to March. August to November, on the other hand, are the months with the greatest chance of precipitation. There is at least 200mm of rain per month in these months.

Climate figures

The figures below are based on long-term average climate statistics. The temperatures are displayed in degrees Celsius (°C).

maximum temperature minimum temperature hours of sunshine per day days of rainfall per month amount of rainfall per month water temperature
January 29℃ 21℃ 7 18 27℃
February 29℃ 21℃ 7 14 26℃
March 30℃ 21℃ 8 14 26℃
April 30℃ 22℃ 8 14 27℃
May 31℃ 23℃ 8 17 28℃
June 31℃ 23℃ 8 19 28℃
July 31℃ 23℃ 8 21 28℃
August 31℃ 24℃ 8 21 28℃
September 31℃ 23℃ 7 20 29℃
October 31℃ 23℃ 7 19 29℃
November 30℃ 22℃ 7 19 28℃
December 29℃ 21℃ 7 19 27℃

The weather in Portsmouth

Here you will find the weather forecast for Portsmouth. View the current weather in Portsmouth and the forecast for the coming days, such as temperatures, the chance of precipitation, the wind direction and the wind strength. With this weather data you can see what kind of weather you can expect in Portsmouth. Based on the climate statistics, we describe the weather per month in Portsmouth. This is not a long-term forecast, but gives the average weather forecast for all months of the year. Do you want to see the detailed weather forecast for Portsmouth? On the page with extra weather information we show the chance of snow, the wind chill, visibility, UV strength, air pressure and more good weather information.

Portsmouth, Dominica