Lethem weather live forecast

Today's maximum temperature in Lethem is expected to be 35°C. Select a day from the live weather forecast for Lethem, Guyana for more weather parameters.

5-day weather forecast updated at 04:01 on Thursday 18th September 2025 GMT

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

Lethem weather forecast by day

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

Lethem weather for Thursday 18th September 2025

Expect isolated thunderstorms in Lethem, Guyana with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 22% chance of some rain and a gentle breeze of 13 kph from the east.

  • 35°C maximum temperature35
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 22% chance of some rain22
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 13 kph from the East13
    kph wind from E

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Lethem weather for Friday 19th September 2025

Expect isolated thunderstorms in Lethem, Guyana with a maximum temperature of 35°C, high 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 14 kph from the east.

  • 35°C maximum temperature35
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 20% chance of some rain20
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 14 kph from the East14
    kph wind from E

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Lethem weather for Saturday 20th September 2025

Expect scattered clouds in Lethem, Guyana with a maximum temperature of 37°C, very high levels of heat & humidity, maximum UV of 11+ (Extreme) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-east.

  • 37°C maximum temperature37
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Very high heat & humidityVH
    very high heat & humidity
  • Gentle breeze of 16 kph from the North-East16
    kph wind from NE

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Lethem weather for Sunday 21st September 2025

Expect scattered clouds in Lethem, Guyana with a maximum temperature of 37°C, very high levels of heat & humidity, maximum UV of 11+ (Extreme) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the east.

  • 37°C maximum temperature37
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Very high heat & humidityVH
    very high heat & humidity
  • Moderate breeze of 22 kph from the East22
    kph wind from E

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Lethem weather for Monday 22nd September 2025

Expect isolated thunderstorms in Lethem, Guyana with a maximum temperature of 37°C, very high levels of heat & humidity, maximum UV of 11+ (Extreme) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 20 kph from the east.

  • 37°C maximum temperature37
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 31% chance of some rain31
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Very high heat & humidityVH
    very high heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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

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