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Monthly climate in Lethem, Guyana

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Lethem features a tropical monsoon climate (Am).Temperatures typically range between 26 °C (79 °F) and 30 °C (86 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 1560 mm (61.4 inches) and receives 164 rainy days on the 1 mm (0.04 inches) threshold annually.Lethem enjoys an average of 3595 hours of sunshine throughout the year, and daylight varies from 11 hours 55 minutes to 12 hours 17 minutes per day.

Monthly average temperatures in Lethem, Guyana §

The warmest months in Lethem are March, October and November, with daily mean temperatures ranging from 28 to 30 °C (83 - 86 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 26 to 26 °C (79 - 80 °F) throughout the day. On average each year, Lethem experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Lethem, Guyana.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 37°C
(98°F)		 36°C
(97°F)		 37°C
(98°F)		 37°C
(100°F)		 37°C
(99°F)		 34°C
(94°F)		 33°C
(92°F)		 35°C
(95°F)		 37°C
(100°F)		 38°C
(101°F)		 38°C
(100°F)		 37°C
(98°F)
Mean maximum 35°C
(96°F)		 35°C
(95°F)		 36°C
(97°F)		 36°C
(98°F)		 34°C
(94°F)		 32°C
(90°F)		 32°C
(90°F)		 35°C
(94°F)		 36°C
(98°F)		 37°C
(99°F)		 37°C
(99°F)		 35°C
(95°F)
Average high 33°C
(92°F)		 33°C
(91°F)		 33°C
(92°F)		 33°C
(92°F)		 30°C
(87°F)		 30°C
(86°F)		 30°C
(86°F)		 31°C
(89°F)		 34°C
(93°F)		 35°C
(96°F)		 35°C
(95°F)		 33°C
(91°F)
Daily mean 28°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 27°C
(81°F)		 28°C
(83°F)		 30°C
(86°F)		 29°C
(85°F)		 28°C
(82°F)
Average low 24°C
(75°F)		 23°C
(75°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(75°F)
Mean minimum 22°C
(72°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(73°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(71°F)		 22°C
(72°F)		 22°C
(73°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(73°F)
Minimum 22°C
(72°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(72°F)		 21°C
(70°F)		 21°C
(70°F)		 22°C
(71°F)		 22°C
(72°F)		 23°C
(74°F)		 23°C
(73°F)		 22°C
(71°F)

Compare climate in Lethem with other places

Compare temperature, precipitation, sunshine, UV index in Lethem, Guyana with other places around the world.

Monthly average precipitation in Lethem, Guyana §

Lethem usually has the most precipitation in May, June and July, with an average of 27 rainy days and 317 mm (12.5 inches) of precipitation per month.The driest months in Lethem are January, February and December. On average, 30 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Lethem, Guyana.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 25 (1.0) 28 (1.1) 42 (1.7) 99 (3.9) 274 (10.8) 353 (13.9) 324 (12.7) 165 (6.5) 88 (3.5) 43 (1.7) 82 (3.2) 36 (1.4)
Average precipitation days (≥ 1 mm) 4 5 6 10 26 26 29 21 13 8 8 8

Monthly sunshine hours in Lethem, Guyana §

The sunniest months in Lethem are September, October and December, when the sun shines an average of 10 hours 37 minutes a day.Least sunny months in Lethem: January, May and June receive an average of 8 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Lethem, Guyana.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 265 282 312 298 273 268 292 319 320 333 305 322
Mean daily daylight hours 11h 56m 11h 59m 12h 5m 12h 10m 12h 15m 12h 17m 12h 16m 12h 12m 12h 6m 12h 1m 11h 57m 11h 55m

Solar UV radiation in Lethem, Guyana §

Lethem experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 15 - 17, which corresponds to the Extreme category of sun exposure.June, July and October are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. For more detailed information, check out our hourly Lethem UV Index data.

Average daily maximum UV levels by month for Lethem, Guyana.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 13 15 16 17 15 13 12 13 13 13 13 13