DominicaThe climate of Portsmouth
The current climate in Portsmouth features temperatures ranging from a high of 32°C to a low of 29°C throughout the year. The average yearly temperature is around 31°C. At night, temperatures in the colder months average around 21°C and in the warmer months around 25°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Portsmouth, Dominica.
Temperature records
The highest temperature recorded in Portsmouth in recent years was 37°C in August 2023. The lowest daytime temperature recorded was 24°C in February 2021.
Rainfall amount
On average, Portsmouth receives 2468 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
Best time to visit Portsmouth?
The best time to visit Portsmouth for mild to warm weather is January up to July and December. You might get some rain, but the temperatures are just right to explore Portsmouth.
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Climate Table of Portsmouth
The climate table of Portsmouth shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 29 | 29 | 29 | 29 | 30 | 31 | 31 | 31 | 32 | 31 | 30 | 29 |
| Temp. min (°C) | 22 | 23 | 23 | 24 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 22 |
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| Precipitation (mm) | 143 | 85 | 126 | 141 | 115 | 176 | 168 | 268 | 369 | 332 | 369 | 176 |
| UV Index | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Portsmouth, Dominica. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Portsmouth
Yearly Temperature in Portsmouth
Precipitation charts
These charts show the average amount of precipitation in Portsmouth, Dominica. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Portsmouth
Total Yearly Precipitation in Portsmouth
UV index chart
This chart shows the average UV index per month in Portsmouth, Dominica. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Portsmouth
Weather experiences in Portsmouth
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Average weather in Portsmouth by month
Click on a month below to see detailed weather info for Portsmouth. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.