DominicaThe weather in December in Portsmouth
It's warm in December in Portsmouth with an average temperature of 29°C. Temperatures this month range from a low of 29°C to a high of 30°C. At night, you can expect temperatures between 22°C and 23°C.
Looking for sun? December isn’t a good month to be in Portsmouth. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Portsmouth, Dominica. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2023, Portsmouth reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 25°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 18°C to a highest value of 26°C.
Rainfall amount
In December, there is an average of 176 mm of precipitation, spread over 19 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in December for Portsmouth
Click on any day in December to get detailed info about the usual weather on that day in Portsmouth. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Portsmouth | New York | |
|---|---|---|
| Average temperature | 29°C | 9°C |
| Max. temperature | 30°C | 12°C |
| Min. temperature | 22°C | -5°C |
| Total precipitation | 176 mm | 133 mm |
| Rainy days | 19 days | 17 days |
Start of December
The month of December starts in Portsmouth with hot temps, averaging around 30°C during the day and nights around 23°C.
Mid December
By mid-December, daytime temps stay steady at around 30°C, with nights around 23°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of December
By the end of December, the average daytime temperature in Portsmouth is around 29°C, while nighttime temps are about 23°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Portsmouth for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in December in Portsmouth, Dominica. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Portsmouth
Temperature in December in Portsmouth over the years
Precipitation charts
These charts show the average amount of precipitation in December 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.
Daily Precipitation in December in Portsmouth
Total precipitation in December in Portsmouth over the years
Daily UV index in December in Portsmouth
This chart shows the average daily UV index in December in Portsmouth, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December 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.