Climate averages 1991–2020
Georgetown weather
by month.
See how the year changes. September (tied with October) has the highest average daily maximum; March has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Georgetown averages a daytime high of 27.8°C and a nighttime low of 24.7°C, with about 2,050 mm of rain on roughly 280 days. September (tied with October) is the warmest month (average high 29.1°C) and January the coolest (26.8°C). June is the wettest month with 315 mm; March is the driest with 93 mm.
The annual picture
A year in Georgetown
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Georgetown climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.8°C24.1°C | 24.1°C | 160 | 23.5 | 11.812 h |
| February | 27.0°C24.2°C | 24.2°C | 107 | 18.5 | 11.912 h |
| March | 27.4°C24.5°C | 24.5°C | 93 | 18.6 | 12.112 h |
| April | 27.7°C24.9°C | 24.9°C | 130 | 20.1 | 12.312 h |
| May | 27.7°C24.7°C | 24.7°C | 253 | 26.5 | 12.412 h |
| June | 27.4°C24.3°C | 24.3°C | 315 | 29.1 | 12.513 h |
| July | 27.8°C24.2°C | 24.2°C | 241 | 29.4 | 12.512 h |
| August | 28.6°C24.8°C | 24.8°C | 161 | 25.5 | 12.312 h |
| September | 29.1°C25.5°C | 25.5°C | 96 | 18.1 | 12.212 h |
| October | 29.1°C25.7°C | 25.7°C | 108 | 19.3 | 12.012 h |
| November | 28.2°C25.1°C | 25.1°C | 179 | 23.8 | 11.812 h |
| December | 27.2°C24.4°C | 24.4°C | 207 | 27.1 | 11.712 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- ParamariboSuriname · 346 kmHigh 29.4°C · Low 23.9°C · 1,700 mm rain a year
- UpataVenezuela · 488 kmHigh 30.5°C · Low 21.9°C · 1,041 mm rain a year
- TucupitaVenezuela · 497 kmHigh 30.3°C · Low 23.3°C · 1,150 mm rain a year
- Ciudad GuayanaVenezuela · 523 kmHigh 30.8°C · Low 22.9°C · 1,033 mm rain a year
- Boa VistaBrazil · 524 kmHigh 30.8°C · Low 23.6°C · 1,696 mm rain a year
- Port of SpainTrinidad and Tobago · 567 kmHigh 28.4°C · Low 25.3°C · 939 mm rain a year
- Ciudad BolívarVenezuela · 612 kmHigh 31.9°C · Low 23.7°C · 1,230 mm rain a year
- MaturínVenezuela · 643 kmHigh 30.3°C · Low 22.8°C · 951 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-4, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 6.80°, -58.20° (5 km from the city centre). Rain comes from the 0.25° cell at 6.75°, -58.25°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.