Sinnamary Weather in October
What's the weather like in Sinnamary (Guyane) in October 2025?
The climate in Sinnamary during October can be summarized as hot, humid and reasonably dry.
October is in the fall / autumn in Sinnamary and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (90°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 32.5°C 90.4°F |
|---|---|
| Nightly temperature | 22.8°C 73°F |
| Average temperature | 27.6°C 81.7°F |
| Daily sunshine | 8.7 hrs |
| Avg rainfall | 66 mm 2.6 ins |
| Rainy days | 5 days |
| Sea temperature | 28.2°C 82.7°F |
| Humidity | 76% |
| Windspeed | 5.8kph 4 mph |
On average October is the 2nd driest month of the year in Sinnamary with around 66mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
October temperatures in Sinnamary
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 Sinnamary in October 2025.
Other monthly averages
Best places to visit in October
Sinnamary weather stats
| Hottest month: | October | 32.2°C 90°F |
|---|---|---|
| Driest month: | September | 42mm 1.7ins |
| Sunniest month: | October | 8.7hrs |
| Coldest month: | January | 28.8°C 83.8°F |
| Wettest month: | May | 476mm 18.7ins |
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