Cayenne - When to Visit

When to Visit Cayenne

Climate guide & best times to travel

Monthly Climate Data for Cayenne Average temperature and rainfall by month Climate Overview 17°C 22°C 27°C 32°C 37°C Rainfall (mm) 0 299 599 Jan Jan: 29.0°C high, 23.0°C low, 399mm rain Feb Feb: 29.0°C high, 23.0°C low, 335mm rain Mar Mar: 29.0°C high, 23.0°C low, 315mm rain Apr Apr: 30.0°C high, 23.0°C low, 442mm rain May May: 30.0°C high, 23.0°C low, 599mm rain Jun Jun: 30.0°C high, 23.0°C low, 391mm rain Jul Jul: 31.0°C high, 22.0°C low, 262mm rain Aug Aug: 31.0°C high, 22.0°C low, 135mm rain Sep Sep: 32.0°C high, 22.0°C low, 64mm rain Oct Oct: 32.0°C high, 22.0°C low, 56mm rain Nov Nov: 31.0°C high, 22.0°C low, 135mm rain Dec Dec: 30.0°C high, 23.0°C low, 353mm rain Temperature Rainfall
Cayenne sits just a few degrees north of the equator, and the weather makes no effort to disguise that fact. Temperatures barely shift across the calendar year. Highs stay in the 29-32°C (84-90°F) band every month. The rhythm of the rains divides the year into distinct seasons that shape road conditions and festival calendars. Humidity holds at around 70% year-round, giving the air a physical presence. It is not the punishing wet-blanket heat of parts of Southeast Asia, but a persistent tropical warmth that encourages a slower pace. French Guiana follows a two wet, two dry pattern that differs from a simple monsoon destination. The long rainy season runs from roughly April through mid-July, peaking dramatically in May when Cayenne receives close to 600mm of rain in a single month. Expect unpaved tracks to turn into small rivers and afternoon downpours to feel almost theatrical. A transitional period through July and August eases into the long dry season, which peaks in September and October. It is dry by any equatorial standard, with barely 56-64mm across those two months combined. December brings the short rainy season back, carrying through January and into March before the long rains return again. The notable thing about Cayenne's wet seasons is that they rarely mean rain all day. The long rainy season tends to deliver concentrated afternoon downpours followed by clearing. Mornings are often well usable even in May. The dry season months, by contrast, bring full sunny days and noticeably lower nighttime temperatures hovering around 22°C (72°F). Evenings on the waterfront or at the open-air Marché de Cayenne become distinctly more comfortable.

Best Time to Visit

Recommended timing for different travel styles.

Beach
September and October are the clear answer. These are the driest months of the year in Cayenne, with barely 56-64mm of rain between them. Daytime highs of 32°C (90°F) keep the water warm. Extended stretches of clear sky make beach days reliable. The Iles du Salut and the coast around Cayenne are at their most accessible during this window.
Cultural
Cultural explorers tend to find February and March rewarding, even though rainfall is moderate. This period coincides with Cayenne's carnival season, one of the most exuberant in the French overseas territories. Showers are possible but brief. The evenings carry a festive energy that makes them easy to forgive.
Adventure
For adventure and hiking, July and August hit a useful sweet spot. Rainfall drops considerably from the May-June peak. Temperatures are slightly warmer than the wet season average. The jungle trails in and around Cayenne are passable without the flooding risks that April and May carry.
Budget
Budget travelers should note that the long dry season of September through October is Cayenne's busiest visitor window. This tends to push accommodation toward its higher end. The short dry season of February and March is generally quieter. The weather remains manageable. The carnival period can be a good-value time if you book early.

What to Pack

Essentials and seasonal recommendations for Cayenne.

Year-Round Essentials
A good insect repellent containing DEET or picaridin
The equatorial conditions mean mosquitoes are active most of the year. Protecting against them is both comfort and health precaution.
Lightweight, breathable clothing in natural fibers, cotton or linen
Handles the humidity far better than synthetics, which trap heat against the skin.
A compact umbrella or packable rain jacket
afternoon rain can arrive quickly even in the drier months.
Reef-safe sunscreen
The equatorial sun is intense even through cloud cover, at the beach.
A refillable water bottle
makes staying hydrated considerably easier in the persistent warmth.
Comfortable sandals that dry quickly
puddles and damp paths are part of daily life outside the dry season.
Long rainy season (April through June, December and January)
Footwear
closed waterproof sandals or quick-dry shoes
Accessories
A dry bag for electronics and documents, A small torch or headlamp
Dry season (September and October )
Clothing
UV-protective swimwear
Accessories
A wide-brimmed hat
Plug Type
Type E
Voltage
220V
Adapter Note
Travelers from North America, Japan, or Australia need an adapter and, for older devices, a voltage converter. Most modern electronics, phone chargers, and laptop power bricks handle the voltage automatically.
Skip These Items
anything resembling cold-weather clothing formal or high-maintenance fabrics that wrinkle badly or need dry cleaning heavy hiking boots glass bottles for toiletries or personal care products
Full Packing Checklist

Interactive checklist with shopping links for every item you need.

View Cayenne Packing List →

Month-by-Month Guide

Climate conditions and crowd levels for each month of the year.

January

This is the short rainy season. Rain arrives in heavy afternoon bursts that tend to clear by evening.

High 29°C (84°F)
Low 23°C (74°F)
Rainfall 399mm
Crowds Medium
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February

Carnival energy transforms Cayenne's mood dramatically. The rain rarely dampens the street celebrations for long. The city feels alive in a way it doesn't at other times of year.

High 29°C (84°F)
Low 23°C (74°F)
Rainfall 335mm
Crowds High
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March

The tail end of carnival and the beginning of a quieter inter-season period make this a reasonable window to explore Cayenne without competition.

High 29°C (85°F)
Low 23°C (74°F)
Rainfall 315mm
Crowds Medium
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April

Mornings remain usable but the afternoon rains become more reliable and heavier. Expect some disruption to outdoor plans.

High 30°C (86°F)
Low 23°C (74°F)
Rainfall 442mm
Crowds Low
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May

The landscape turns intensely green. The rivers run high. The jungle around the city is spectacular in a sodden, otherworldly way. Not the most convenient time for outdoor activities, but atmospheric.

High 30°C (86°F)
Low 23°C (74°F)
Rainfall 599mm
Crowds Low
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June

The rains become slightly less relentless and the days feel more manageable. The wet season hasn't ended and afternoons remain unpredictable.

High 30°C (86°F)
Low 23°C (74°F)
Rainfall 391mm
Crowds Low
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July

This transitional month still gets afternoon showers but noticeably fewer than the May-June peak. The evenings are appreciably cooler.

High 31°C (87°F)
Low 22°C (72°F)
Rainfall 262mm
Crowds Medium
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August

Days are largely sunny and the evenings are comfortable. This is when Cayenne starts to feel its most relaxed and approachable, with the dry season within reach.

High 31°C (89°F)
Low 22°C (72°F)
Rainfall 135mm
Crowds Medium
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September

Sunshine dominates, beach days are reliable, and Cayenne draws more visitors. Lows of 22°C (72°F) make nights on the Place des Palmistes pleasant.

High 32°C (90°F)
Low 22°C (72°F)
Rainfall 64mm
Crowds High
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October

Clear skies, warm water, and reliable beach weather. This is Cayenne at its most classically tropical and sun-soaked.

High 32°C (90°F)
Low 22°C (72°F)
Rainfall 56mm
Crowds High
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November

It's a transitional month that has a decent balance. Fewer crowds than October. Still mostly sunny. Occasional showers build toward December.

High 31°C (89°F)
Low 22°C (72°F)
Rainfall 135mm
Crowds Medium
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December

Christmas and New Year bring their own festive energy to Cayenne. The rains, while substantial, are typically predictable in their timing and rarely last the full day.

High 30°C (86°F)
Low 23°C (73°F)
Rainfall 353mm
Crowds High
View Details →