Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 30°C. Select a day from the live weather forecast for Portsmouth, Dominica for more weather parameters.

Wednesday
17th Jun
30

26

5

10
Thursday
18th Jun
29

26

6

9
Friday
19th Jun
30

26

6

10
Saturday
20th Jun
29

26

4

9
Sunday
21st Jun
30

26

5

10

5-day weather forecast updated at 04:03 on Wednesday 17th June 2026 GMT

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The 5-day weather forecast for Dominica (Portsmouth) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Portsmouth weather forecast by day

Below are the detailed weather forecasts for Portsmouth for the next 5 days.

Portsmouth weather for Wednesday 17th June 2026

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 69% chance of some rain and a moderate breeze of 20 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
10
UV index (Very High)
69
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from E

Portsmouth weather for Thursday 18th June 2026

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 24 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
57
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
24
kph wind from E

Portsmouth weather for Friday 19th June 2026

Expect broken clouds in Portsmouth, Dominica with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
broken clouds
6
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
27
kph wind from E

Portsmouth weather for Saturday 20th June 2026

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 89% chance of some rain and a moderate breeze of 21 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
89
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from E

Portsmouth weather for Sunday 21st June 2026

Expect broken clouds in Portsmouth, Dominica with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the east.