Grand-Santi Weather in October
What's the weather like in Grand-Santi (Guyane) in October 2025?
The climate in Grand-Santi during October can be summarized as hot and reasonably dry.
October is in the fall / autumn in Grand-Santi and is typically the warmest month of the year. Daytime maximum temperatures average around a warm 33°C (91°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 32.9°C 91.2°F |
|---|---|
| Nightly temperature | 21.7°C 71.1°F |
| Average temperature | 27.3°C 81.1°F |
| Daily sunshine | 8.8 hrs |
| Avg rainfall | 79 mm 3.1 ins |
| Rainy days | 7 days |
| Sea temperature | 28.1°C 82.5°F |
| Humidity | 56% |
| Windspeed | 3.6kph 2 mph |
On average October is the driest month of the year in Grand-Santi with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.8 hours of sunshine per day.
October temperatures in Grand-Santi
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Grand-Santi in October 2025.
Other monthly averages
Best places to visit in October
Grand-Santi weather stats
| Hottest month: | October | 32.6°C 90.7°F |
|---|---|---|
| Driest month: | October | 79mm 3.1ins |
| Sunniest month: | September | 9hrs |
| Coldest month: | January | 29.7°C 85.5°F |
| Wettest month: | May | 361mm 14.2ins |
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