Cayenne weather in October 2025

Expect 90°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Cayenne in October. Check more long-term weather averages for Cayenne in October before you book your next holiday to French Guiana in 2025/2026.

  • 90°F maximum daytime temperature in October in Cayenne90
    90°F max day temperature
  • 8 hours of sunshine per day
  • 4 days with some rainfall in October in Cayenne4
    4 days with some rainfall
  • 73°F minimum night-time temperature in October in Cayenne73
    73°F min night temperature
  • 12 hours of daylight per day in October in Cayenne12
    12 hours of daylight per day
  • Very high heat & humidity in October in CayenneVH
    Very High heat & humidity
  • 1.8 inches monthly rainfall in October in Cayenne1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Cayenne11
    11+ (Extreme) UV index
  • 82°F sea temperature in October in Cayenne82
    82°F sea temperature

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The October weather guide for French Guiana, represented by Cayenne, (Cayenne) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Cayenne in October?

Daytime temperatures usually reach 90°F in Cayenne in October with very high heat and humidity, falling to 73°F at night.

How sunny is it in Cayenne in October?

There are normally 8 hours of bright sunshine each day in Cayenne in October - that's 70% of daylight hours.

How warm is the sea around Cayenne in October?

The average sea temperature around Cayenne in October is 82°F.

Does it rain in Cayenne in October?

There are usually 4 days with some rain in Cayenne in October and the average monthly rainfall is 1.8 inches.

Cayenne October sunrise & sunset times

Browse the sunrise and sunset times for Cayenne in October 2025. Select a month to view Cayenne sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:17 18:21
Thursday, 16th October 2025 06:15 18:15
Friday, 31st October 2025 06:14 18:11

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