Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 82°F. Select a day from the live weather forecast for Portsmouth, Dominica for more weather parameters.

Thursday
19th Mar
82

73

7

11
Friday
20th Mar
82

73

8

11
Saturday
21st Mar
82

73

6

11
Sunday
22nd Mar
82

72

6

11
Monday
23rd Mar
84

72

7

11

5-day weather forecast updated at 04:03 on Thursday 19th March 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 Thursday 19th March 2026

Expect sunshine and showers in Portsmouth, Dominica with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a moderate breeze of 14 mph from the east.

82
°F maximum temperature
73
°F minimum temperature
sunshine and showers
7
hours of sunshine
11
UV index (Extreme)
5
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
14
mph wind from E

Portsmouth weather for Friday 20th March 2026

Expect scattered clouds in Portsmouth, Dominica with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the east.

82
°F maximum temperature
73
°F minimum temperature
scattered clouds
8
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
11
mph wind from E

Portsmouth weather for Saturday 21st March 2026

Expect broken clouds in Portsmouth, Dominica with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 10 mph from the east.

82
°F maximum temperature
73
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
10
mph wind from E

Portsmouth weather for Sunday 22nd March 2026

Expect broken clouds in Portsmouth, Dominica with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the south-east.

82
°F maximum temperature
72
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
8
mph wind from SE

Portsmouth weather for Monday 23rd March 2026

Expect sunshine and showers in Portsmouth, Dominica with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a gentle breeze of 9 mph from the east.