Portsmouth weather live forecast

Tomorrow's maximum temperature in Portsmouth is expected to be 29°C.

5-day weather forecast updated at 04:03 on Tuesday 13th May 2025 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 Tuesday 13th May 2025

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 10-20 mm of rainfall expected with 96% chance of some rain and a moderate breeze of 21 kph from the east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 96% chance of some rain96
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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Portsmouth weather for Wednesday 14th May 2025

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 88% chance of some rain and a moderate breeze of 21 kph from the east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 88% chance of some rain88
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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Portsmouth weather for Thursday 15th May 2025

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a moderate breeze of 22 kph from the east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 86% chance of some rain86
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 22 kph from the East22
    kph wind from E

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Portsmouth weather for Friday 16th May 2025

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 95% chance of some rain and a moderate breeze of 21 kph from the east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 95% chance of some rain95
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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Portsmouth weather for Saturday 17th May 2025

Expect isolated thunderstorms in Portsmouth, Dominica with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 18 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 67% chance of some rain67
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 18 kph from the East18
    kph wind from E

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  • Destinations across the Med, Caribbean & USA
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Metric (°C / mm)  |  Imperial (°F / inches)

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