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The climate of French Guiana, city by city

This page lists the 5 cities in French Guiana for which climate normals are available. Each entry covers temperature, rainfall and how the climate changed between 1940 and 2025, computed from ERA5 reanalysis data.

Average across cities

25.8°C

Annual rainfall

2,618mm

Spread between cities

0.5°C

Warming

+1.4°C

Departure from normal across the country's largest cities, 1940–2025

Rankings

Across the 5 cities in this country with a measured climate.

The warmest

  1. 1Cayenne26.1 °C
  2. 2Rémire-Montjoly26.1 °C
  3. 3Kourou25.8 °C
  4. 4Matoury25.6 °C
  5. 5Saint-Laurent-du-Maroni25.6 °C

The coldest

  1. 1Matoury25.6 °C
  2. 2Saint-Laurent-du-Maroni25.6 °C
  3. 3Kourou25.8 °C
  4. 4Cayenne26.1 °C
  5. 5Rémire-Montjoly26.1 °C

The wettest

  1. 1Matoury2,910 mm
  2. 2Cayenne2,586 mm
  3. 3Rémire-Montjoly2,586 mm
  4. 4Kourou2,578 mm
  5. 5Saint-Laurent-du-Maroni2,430 mm

Frequently asked questions

What is the hottest city in French Guiana?

The hottest city in French Guiana is Cayenne, with an average annual temperature of 26.1 °C.

What is the coldest city in French Guiana?

The coldest city in French Guiana is Matoury, with an average annual temperature of 25.6 °C.

What is the wettest city in French Guiana?

The wettest city in French Guiana is Matoury, with 2,910 mm of precipitation per year.

Has the climate of French Guiana warmed?

Based on its largest cities, French Guiana warmed by +1.4 °C between 1940 and 2025.

Cities by region

Guyane5