Climate of Portsmouth
Portsmouth has a tropical rainforest climate. It is usually (very) warm, humid and rainy all year round. The average annual temperature for Portsmouth is 28° degrees and there is about 569 mm of rain in a year. It is dry for 77 days a year with an average humidity of 76% and an UV-index of 7.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 26°C and 29°C
- Night:the average nighttime temperature is between 25°C and 28°C
- Sea temperature: the sea temperature is between 27°C and 30°C
- Rain: it rains 225 days and there is a total of approximately 573 mm rainfall
- Sun hours: throughout the year there are 3291 sun hours
Maximum temperature: | between 26°C and 29°C |
Warmest month: | 29°C in June |
Coldest month: | 26°C in January |
Night temperature: | between 25°C and 28°C |
Sea temperature: | between 27°C and 30°C |
Dry days: | 140 days |
Days with rain: | 225 days |
Days with snow: | 0 days |
Total rain sum: | 573 mm |
Hours of sunshine: | 3291 hours |
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Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Portsmouth.
Precipitation graph
This graph shows the average amount of rainfall per month for Portsmouth.
Climate table of Portsmouth
In this climate table you can see at a glance what the average weather per month is for Portsmouth. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Portsmouth might be like in a given month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Day temp. (°C) | 26 | 26 | 27 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 27 |
Night temp. (°C) | 25 | 25 | 25 | 26 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 26 |
Water temp. (°C) | 28 | 27 | 28 | 28 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Precipitation (mm) | 28 | 19 | 19 | 44 | 59 | 29 | 50 | 68 | 79 | 77 | 68 | 33 |
Days with rain | 18 | 16 | 15 | 20 | 21 | 16 | 20 | 19 | 19 | 21 | 20 | 20 |
Dry days | 13 | 12 | 16 | 10 | 10 | 14 | 11 | 12 | 11 | 10 | 10 | 11 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Sun hours per day | 7 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 10 | 8 | 7 | 7 |
Wind force (Bft) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
UV-index | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
Best time to visit Portsmouth
The best time to visit Portsmouth on Dominica is from January through December. In this period you have a warm temperature and little precipitation. The highest average temperature in Portsmouth is 29°C in June and the lowest is 26°C in January. The highest water temperature is 30°C and at its coldest the water is 27°C.
Climate of Portsmouth by month
What is the average climate in a given month for Portsmouth? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
Portsmouth weather experiences
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