Climate averages 1991–2020
Cayenne weather
in October.
A hot, fairly dry month: the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Cayenne: daytime highs average 31.5°C and nights cool to about 24.3°C. By daytime temperature it is the warmest month of the year.
Expect about 39 mm of rain on roughly 10 days, which makes October a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 01 min on an average October day.
The nearest other city in this atlas is Paramaribo (330 km away). In October its highs average 31.2°C, about as warm as Cayenne, with 71 mm of rain.
From October to November, average highs fall by 1.4°C to 30.1°C, and monthly rainfall rises from 39 mm to 122 mm.
The annual picture
October 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
Cayenne climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.6°C23.3°C | 23.3°C | 244 | 26.6 | 11.912 h |
| February | 27.6°C23.5°C | 23.5°C | 205 | 22.5 | 12.012 h |
| March | 28.1°C23.8°C | 23.8°C | 173 | 23.9 | 12.112 h |
| April | 28.3°C23.8°C | 23.8°C | 257 | 25.0 | 12.212 h |
| May | 28.2°C23.6°C | 23.6°C | 411 | 29.1 | 12.312 h |
| June | 28.3°C23.2°C | 23.2°C | 343 | 28.5 | 12.412 h |
| July | 28.9°C23.2°C | 23.2°C | 186 | 24.8 | 12.412 h |
| August | 30.1°C23.7°C | 23.7°C | 67 | 13.9 | 12.312 h |
| September | 31.3°C24.2°C | 24.2°C | 23 | 7.2 | 12.112 h |
| October, selected | 31.5°C24.3°C | 24.3°C | 39 | 10.1 | 12.012 h |
| November | 30.1°C24.1°C | 24.1°C | 122 | 19.6 | 11.912 h |
| December | 28.4°C23.6°C | 23.6°C | 253 | 26.5 | 11.812 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
October in nearby cities
- Paramaribo in OctoberSuriname · 330 kmHigh 31.2°C · Low 24.5°C · 71 mm rain
- Macapá in OctoberBrazil · 563 kmHigh 31.8°C · Low 25.0°C · 17 mm rain
- Santana in OctoberBrazil · 568 kmHigh 32.3°C · Low 24.9°C · 18 mm rain
- Georgetown in OctoberGuyana · 676 kmHigh 29.1°C · Low 25.7°C · 108 mm rain
- Breves in OctoberBrazil · 764 kmHigh 33.8°C · Low 24.7°C · 33 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 Cayenne) is explained once on the Cayenne year overview and on the Sources, method and limits page.