Climate averages 1991–2020
Georgetown weather
in September.
A hot, wet month: one of the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Georgetown: daytime highs average 29.1°C and nights cool to about 25.5°C. By daytime temperature it is one of the warmest months of the year.
Expect about 96 mm of rain on roughly 18 days, which makes September a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Paramaribo (346 km away). In September its highs average 31.0°C, 1.8°C warmer than Georgetown, with 66 mm of rain.
From September to October, average highs fall by 0.1°C to 29.1°C, and monthly rainfall rises from 96 mm to 108 mm.
The annual picture
September in context
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, selected | 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
September in nearby cities
- Paramaribo in SeptemberSuriname · 346 kmHigh 31.0°C · Low 24.2°C · 66 mm rain
- Upata in SeptemberVenezuela · 488 kmHigh 31.1°C · Low 22.2°C · 103 mm rain
- Tucupita in SeptemberVenezuela · 497 kmHigh 31.3°C · Low 23.9°C · 89 mm rain
- Ciudad Guayana in SeptemberVenezuela · 523 kmHigh 31.3°C · Low 23.3°C · 112 mm rain
- Boa Vista in SeptemberBrazil · 524 kmHigh 30.8°C · Low 23.2°C · 94 mm rain
- Port of Spain in SeptemberTrinidad and Tobago · 567 kmHigh 29.2°C · Low 26.0°C · 101 mm rain
- Ciudad Bolívar in SeptemberVenezuela · 612 kmHigh 31.2°C · Low 23.7°C · 138 mm rain
- Maturín in SeptemberVenezuela · 643 kmHigh 31.0°C · Low 23.2°C · 97 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Georgetown) is explained once on the Georgetown year overview and on the Sources, method and limits page.