Monthly climate in Fort Wellington, Guyana

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Fort Wellington features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (79 °F) and 28 °C (82 °F) through the year, but rarely can drop to 24 °C (75 °F) or can rise to as high as 29 °C (85 °F). The average annual precipitation amounts to about 2795 mm (110.0 inches) and receives 293 rainy days on the 1 mm (0.04 inches) threshold annually. Fort Wellington enjoys an average of 3609 hours of sunshine throughout the year, and daylight varies from 11 hours 44 minutes to 12 hours 28 minutes per day.

Monthly average temperatures in Fort Wellington, Guyana

The warmest months in Fort Wellington are August, September and October, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °C (79 - 79 °F) throughout the day. On average each year, Fort Wellington 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 Fort Wellington. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum27°C
(81°F)
27°C
(81°F)
27°C
(82°F)
28°C
(83°F)
28°C
(82°F)
28°C
(83°F)
29°C
(84°F)
29°C
(84°F)
29°C
(85°F)
29°C
(84°F)
29°C
(84°F)
28°C
(83°F)
Mean maximum27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
27°C
(82°F)
27°C
(82°F)
28°C
(82°F)
28°C
(83°F)
28°C
(83°F)
29°C
(84°F)
29°C
(84°F)
28°C
(83°F)
28°C
(82°F)
Average high26°C
(80°F)
26°C
(80°F)
27°C
(80°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
28°C
(82°F)
28°C
(83°F)
28°C
(83°F)
28°C
(82°F)
27°C
(81°F)
Daily mean26°C
(79°F)
26°C
(79°F)
26°C
(79°F)
26°C
(80°F)
26°C
(79°F)
26°C
(79°F)
26°C
(80°F)
27°C
(81°F)
28°C
(82°F)
28°C
(82°F)
27°C
(81°F)
26°C
(79°F)
Average low25°C
(77°F)
25°C
(77°F)
25°C
(78°F)
26°C
(78°F)
25°C
(78°F)
25°C
(78°F)
25°C
(78°F)
26°C
(79°F)
27°C
(80°F)
27°C
(80°F)
26°C
(79°F)
25°C
(78°F)
Mean minimum24°C
(76°F)
24°C
(75°F)
24°C
(76°F)
25°C
(77°F)
25°C
(77°F)
25°C
(77°F)
24°C
(76°F)
25°C
(77°F)
25°C
(77°F)
25°C
(78°F)
25°C
(77°F)
25°C
(76°F)
Minimum24°C
(76°F)
24°C
(75°F)
24°C
(75°F)
24°C
(76°F)
24°C
(76°F)
24°C
(76°F)
24°C
(76°F)
24°C
(76°F)
25°C
(76°F)
25°C
(77°F)
25°C
(77°F)
24°C
(75°F)

Compare climate in Fort Wellington with other places

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

Monthly average precipitation in Fort Wellington, Guyana

Fort Wellington usually has the most precipitation in May, June and December, with an average of 29 rainy days and 406 mm (16.0 inches) of precipitation per month. The driest months in Fort Wellington are February, September and October. On average, 112 mm (4.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fort Wellington. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)162 (6.4)121 (4.8)167 (6.6)206 (8.1)425 (16.7)447 (17.6)314 (12.4)150 (5.9)99 (3.9)117 (4.6)241 (9.5)345 (13.6)
Average precipitation days (≥ 1 mm)222322242929302319172629

Monthly sunshine hours in Fort Wellington, Guyana

The sunniest months in Fort Wellington are March, August and October, when the sun shines an average of 10 hours 34 minutes a day. Least sunny months in Fort Wellington: January, June and November receive an average of 8 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Fort Wellington. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours257288327306289266307326321329286301
Mean daily daylight hours11h 47m11h 54m12h 4m12h 15m12h 24m12h 28m12h 26m12h 18m12h 7m11h 57m11h 48m11h 44m

Solar UV radiation in Fort Wellington, Guyana

Fort Wellington experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure. July, November and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly Fort Wellington UV Index data.

Average daily maximum UV levels by month for Fort Wellington. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)131415161413121313131212