Georgetown, Guyana Climate & Monthly Averages
Georgetown has a tropical rainforest climate. September is the hottest month, averaging 87° by day; January is the coldest at 82°.
Rain, not cold, divides the year in 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.
The wet-and-dry rhythm at a glance
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.
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.
More climate facts for Georgetown
- 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%
Choosing the right part of the year in Georgetown
Choose dates by rain, not just temperature
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.
What the humidity changes
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.
Warm all year: the monthly rain pattern
Each card shows the average high and low. The bar places that month between Georgetown's coldest night and warmest afternoon.
January
- Rain
- 23 days
- Sunshine
- 10.9 h
- Daylight
- 11.8 h
February
- Rain
- 21 days
- Sunshine
- 10.8 h
- Daylight
- 11.9 h
March
- Rain
- 20 days
- Sunshine
- 11.2 h
- Daylight
- 12.1 h
April
- Rain
- 21 days
- Sunshine
- 10.6 h
- Daylight
- 12.3 h
May
- Rain
- 29 days
- Sunshine
- 9.6 h
- Daylight
- 12.4 h
June
- Rain
- 29 days
- Sunshine
- 9.6 h
- Daylight
- 12.5 h
July
- Rain
- 30 days
- Sunshine
- 10.6 h
- Daylight
- 12.5 h
August
- Rain
- 25 days
- Sunshine
- 11.3 h
- Daylight
- 12.3 h
September
- Rain
- 20 days
- Sunshine
- 11.3 h
- Daylight
- 12.1 h
October
- Rain
- 19 days
- Sunshine
- 10.7 h
- Daylight
- 12.0 h
November
- Rain
- 23 days
- Sunshine
- 10.1 h
- Daylight
- 11.8 h
December
- Rain
- 27 days
- Sunshine
- 10.1 h
- Daylight
- 11.7 h
Looking for warmer alternatives? Browse warm places by month, or compare Georgetown's coolest part of the year: January, February, December.
Monthly temperature and rain table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 82° | 76° | 23 | 5.3 in | 10.9 h/day | 11.8 h | 74% | 81% |
| February | 82° | 76° | 21 | 4.5 in | 10.8 h/day | 11.9 h | 74% | 79% |
| March | 83° | 76° | 20 | 4.3 in | 11.2 h/day | 12.1 h | 64% | 78% |
| April | 83° | 77° | 21 | 6.2 in | 10.6 h/day | 12.3 h | 71% | 80% |
| May | 83° | 77° | 29 | 13.3 in | 9.6 h/day | 12.4 h | 95% | 85% |
| June | 83° | 76° | 29 | 14.2 in | 9.6 h/day | 12.5 h | 98% | 87% |
| July | 84° | 76° | 30 | 12.3 in | 10.6 h/day | 12.5 h | 96% | 86% |
| August | 85° | 77° | 25 | 7.6 in | 11.3 h/day | 12.3 h | 80% | 84% |
| September | 87° | 78° | 20 | 4.9 in | 11.3 h/day | 12.1 h | 67% | 82% |
| October | 86° | 78° | 19 | 5.5 in | 10.7 h/day | 12.0 h | 62% | 81% |
| November | 85° | 77° | 23 | 8.0 in | 10.1 h/day | 11.8 h | 77% | 83% |
| December | 83° | 76° | 27 | 10.1 in | 10.1 h/day | 11.7 h | 86% | 84% |
How Georgetown compares for rain and warmth
- 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.
These comparisons use the same ten-year window for every city in the dataset.
How the calendar changes in warm-weather Georgetown
March through May
March through May is hot here - highs near 83°F (28°C), nights near 77°F (25°C), and rain falls on around 70 of the 90 days. Daylight is generous - around 10.5 hours of sun a day.
June through August
June through August in Georgetown is hot, with daytime highs averaging 84°F (29°C) and nights around 76°F (24°C); rain falls on around 84 of the 90 days. Daylight is generous - around 10.5 hours of sun a day.
September through November
September through November is hot here - highs near 86°F (30°C), nights near 78°F (26°C), and rain falls on around 62 of the 90 days. Daylight is generous - around 10.7 hours of sun a day.
December through February
December through February in Georgetown sits firmly in the heat, with daytime highs averaging 82°F (28°C) and nights around 76°F (24°C); rain falls on around 70 of the 90 days. Daylight is generous - around 10.6 hours of sun a day.
Questions about heat and rain in Georgetown
How much do temperatures drop at night in Georgetown?
What should I wear in Georgetown?
Is Georgetown a wet city?
How hot does Georgetown get in summer?
Georgetown temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.