Port St Johns weather live forecast

Today's maximum temperature in Port St Johns is expected to be 18°C. Select a day from the live weather forecast for Port St Johns, South Africa for more weather parameters.

5-day weather forecast updated at 04:04 on Thursday 18th September 2025 GMT

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The 5-day weather forecast for South Africa (Port St Johns) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Port St Johns weather forecast by day

Below are the detailed weather forecasts for Port St Johns for the next 5 days.

Port St Johns weather for Thursday 18th September 2025

Expect broken clouds in Port St Johns, South Africa with a maximum temperature of 18°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south.

  • 18°C maximum temperature18
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 17 kph from the South17
    kph wind from S

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Port St Johns weather for Friday 19th September 2025

Expect mostly cloudy with light rain in Port St Johns, South Africa with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 24 kph from the north-east.

  • 18°C maximum temperature18
    °C maximum temperature
  • 17°C minimum temperature17
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 24 kph from the North-East24
    kph wind from NE

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Port St Johns weather for Saturday 20th September 2025

Expect isolated thunderstorms in Port St Johns, South Africa with a maximum temperature of 24°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 15% chance of some rain and a moderate breeze of 26 kph from the north-east.

  • 24°C maximum temperature24
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 15% chance of some rain15
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 26 kph from the North-East26
    kph wind from NE

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Port St Johns weather for Sunday 21st September 2025

Expect isolated thunderstorms in Port St Johns, South Africa with a maximum temperature of 22°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a gentle breeze of 14 kph from the south-west.

  • 22°C maximum temperature22
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 30% chance of some rain30
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 14 kph from the South-West14
    kph wind from SW

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Port St Johns weather for Monday 22nd September 2025

Expect isolated thunderstorms in Port St Johns, South Africa with a maximum temperature of 23°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a gentle breeze of 17 kph from the south-west.

  • 23°C maximum temperature23
    °C maximum temperature
  • 17°C minimum temperature17
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 42% chance of some rain42
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 23°C wind chill23
    °C wind chill
  • Gentle breeze of 17 kph from the South-West17
    kph wind from SW

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Metric (°C / mm)  |  Imperial (°F / inches)

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