Cayenne weather in July 2025

Expect 31°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Cayenne in July. Check more long-term weather averages for Cayenne in July before you book your next holiday to French Guiana in 2025/2026.

  • 31°C maximum daytime temperature in July in Cayenne31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 18 days with some rainfall in July in Cayenne18
    18 days with some rainfall
  • 23°C minimum night-time temperature in July in Cayenne23
    23°C min night temperature
  • 12 hours of daylight per day in July in Cayenne12
    12 hours of daylight per day
  • Very high heat & humidity in July in CayenneVH
    Very High heat & humidity
  • 200 mm monthly rainfall in July in Cayenne200
    200 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in July in Cayenne11
    11 (Extreme) UV index
  • 28°C sea temperature in July in Cayenne28
    28°C sea temperature

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The July 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Cayenne in July?

Daytime temperatures usually reach 31°C in Cayenne in July with very high heat and humidity, falling to 23°C at night.

How sunny is it in Cayenne in July?

There are normally 7 hours of bright sunshine each day in Cayenne in July - that's 56% of daylight hours.

How warm is the sea around Cayenne in July?

The average sea temperature around Cayenne in July is 28°C.

Does it rain in Cayenne in July?

There are usually 18 days with some rain in Cayenne in July and the average monthly rainfall is 200mm.

Cayenne July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 06:21 18:45
Wednesday, 16th July 2025 06:24 18:47
Thursday, 31st July 2025 06:26 18:46

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