Lethem weather live forecast

Today's maximum temperature in Lethem is expected to be 90°F. Select a day from the live weather forecast for Lethem, Guyana for more weather parameters.

Wednesday
17th Dec
90

75

5

10
Thursday
18th Dec
90

75

5

8
Friday
19th Dec
90

75

7

10
Saturday
20th Dec
91

75

6

11
Sunday
21st Dec
91

75

7

10

5-day weather forecast updated at 04:01 on Wednesday 17th December 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 Wednesday 17th December 2025

Expect isolated thunderstorms in Lethem, Guyana with a maximum temperature of 90°F, 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 29% chance of some rain and a moderate breeze of 14 mph from the north-east.

90
°F maximum temperature
75
°F minimum temperature
isolated thunderstorms
5
hours of sunshine
10
UV index (Very High)
29
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
14
mph wind from NE

Lethem weather for Thursday 18th December 2025

Expect broken clouds in Lethem, Guyana with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the north-east.

90
°F maximum temperature
75
°F minimum temperature
broken clouds
5
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
13
mph wind from NE

Lethem weather for Friday 19th December 2025

Expect scattered clouds in Lethem, Guyana with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the north-east.

90
°F maximum temperature
75
°F minimum temperature
scattered clouds
7
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
13
mph wind from NE

Lethem weather for Saturday 20th December 2025

Expect broken clouds in Lethem, Guyana with a maximum temperature of 91°F, high levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the north-east.

91
°F maximum temperature
75
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
H
high heat & humidity
13
mph wind from NE

Lethem weather for Sunday 21st December 2025

Expect scattered clouds in Lethem, Guyana with a maximum temperature of 91°F, high levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 12 mph from the north-east.