Georgetown, Guyana Climate & Monthly Averages

The climate of Georgetown

There is not much of a seasonal calendar in Georgetown. Its warmest and coolest months differ by 2°C, against a dataset median nearer 15°C, which leaves 87°F (30°C) in September and 82°F (28°C) in January as the two ends of the year.

Climate quick facts

• Hottest month: September - highs near 87°F (30°C)
• Coldest month: January - highs near 82°F (28°C)
• Decade extremes (2015-2024): 94°F (35°C) high · 71°F (22°C) low
• Wettest month: June (29 rainy days) · Sunniest: August (11.3 h sun/day)
• Climate type: tropical rainforest
• Annual swing: 2°C between the average warmest and coolest month · day to night: 4°C
• Months averaging 30°C or hotter: 2
• Average humidity: 82%

Temperatures through the year

Relative humidity averages 82% across the year, more humid than 92% of the 3496 cities in our dataset - enough that summer afternoons feel hotter than the thermometer says, which is what the dew point converter is for. January bottoms out at 82°F (28°C) in daylight, 76°F (24°C) after dark. Warmth peaks in September: highs of 87°F (30°C), lows of 78°F (26°C). Days and nights are about 4°C apart on average - narrower than almost anywhere else we cover.

Rain, sun and snow

Precipitation concentrates in June - 14.2 inches (361 mm) on 29 days - and thins out by March. Between the average September and the average January lie 2°C, a narrower spread than all but 4% of the 3496 cities in our dataset. Sunshine averages 10.6 hours a day over the year - sunnier than roughly 85% of the cities we track, peaking in August at 11.3 hours. The gridded 2015-2024 daily record for this location tops out at 94°F (35°C) and bottoms at 71°F (22°C) - decade extremes, not all-time station records.

How Georgetown compares

• Rain or snow reaches the ground on 287 days a year - more wet days than any other city in our 3496-city dataset.
• Annual precipitation is 96.1 inches (2441 mm) - wetter than 95% of the 3496 cities we track.
• Georgetown averages 80°F (27°C) across the year - warmer than 92% of the 3496 cities we track.

Ranked against every city in our dataset, each measured on the same ten-year window.

Best time to visit Georgetown

Aim for January to June if you get the choice: humidity and rainfall are at their lowest, which is what actually varies here, and highs average 83°F (28°C) against roughly 24 wet days a month. For the same question asked the other way round, see where else is warm in January.

Pack for Georgetown with light clothing for the warm months, proper waterproofs rather than an umbrella - wet days are the norm here and moisture-wicking fabrics for the humidity. September nights average 78°F (26°C), so evenings rarely match the afternoons.