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Cayenne weather

Guyane (973) · 62,675 inhabitants · Thursday, October 29 · updated 19:02

Air: Good High storm risk · Tomorrow, Mon, Tue

30°

Mainly clear

Feels like 42°C

Wind

20 km/h

Gusts

28 km/h

Humidity

69 %

Pressure

1011 hPa

Clouds

26 %

Storm

Rise 10:14 Set 22:11 Day 11 h 57 min UV 3 · Moderate

Morning, afternoon, evening

Trend

Evening

Mainly clear

30°28°

Feels like 42°

Wind ↑ E 30 km/h

Humidity 69 %

19:00

30°

E 20

22:00

28°

E 30

Cayenne forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +1.6° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Cayenne climate: what a normal year looks like

Ranked against the 492 towns of 20,000+ people in France, Cayenne has the third highest yearly rainfall.

The thermometer moves little from one season to the next: typical afternoon highs range from 28 °C in February to 31 °C in October, and the coolest nights (July) average 23 °C.

A normal year brings roughly 2,620 mm of rain — more than 95% of the towns of 20,000+ people we compared it with.

Swimmers find the warmest sea in July (28 °C) and the coolest in February (27 °C).

Forecast highs for the coming week average 30 °C, 1 °C cooler than a normal October (31 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall	Sea
Jan	28 °C	24 °C	253 mm	27 °C
Feb	28 °C	24 °C	211 mm	27 °C
Mar	29 °C	24 °C	183 mm	27 °C
Apr	29 °C	24 °C	263 mm	28 °C
May	29 °C	24 °C	402 mm	28 °C
Jun	29 °C	24 °C	357 mm	28 °C
Jul	29 °C	23 °C	251 mm	28 °C
Aug	30 °C	23 °C	134 mm	28 °C
Sep	31 °C	23 °C	64 mm	28 °C
Oct	31 °C	24 °C	75 mm	28 °C
Nov	30 °C	24 °C	159 mm	28 °C
Dec	29 °C	24 °C	269 mm	28 °C
Whole year	29 °C	24 °C	2,620 mm	28 °C

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 4.95° N, 52.33° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Cayenne: pollution and pollen

1/6

Good

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.53µg/m³

PM103µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Cayenne

Rain observed over the last two hours by official weather radars around Cayenne, followed by the radar forecast for the next hour where the weather service provides one.

Full-screen rain radar and next-hour rain on RainAtlas

Rain radar Last two hours, then forecast where available · drag the timeline

No open weather radar covers Cayenne yet: the map shows our hour-by-hour rain forecast (ICON, GFS).

Moon over Cayenne

Waning gibbous

87 % illuminated · 18.3 days

Rise 11:27 Set —

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Moonrise and moonset in local time (Europe/Paris); phase and lit fraction from a synodic calculation.

Sea and tides near Cayenne

Tide station used: Cayenne · 1 km away

🌊 Sea surface

29.4 °C

satellite, 29/10

Sea state

Smooth

waves 0.7 m

Period

12 s

Swell

0.6 m

TodayThu 29/10

Low tide 00:29 0.2 m

High tide 06:40 2.5 m

Low tide 12:38 0.6 m

High tide 18:51 2.7 m

TomorrowFri 30/10

Low tide 01:22 0.4 m

High tide 07:33 2.3 m

Low tide 13:31 0.8 m

High tide 19:45 2.6 m

SatSat 31/10

Low tide 02:22 0.5 m

High tide 08:33 2.2 m

Low tide 14:35 0.9 m

High tide 20:46 2.4 m

SunSun 01/11

Low tide 03:31 0.7 m

High tide 09:44 2.1 m

Low tide 15:50 1.0 m

Indicative heights above chart datum. Coefficient: 20 for the weakest tides, 120 for the strongest.

Look up a past day in Cayenne

Curious about the weather in Cayenne on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Cayenne weather at a glance

This page gathers everything about the weather in Cayenne, Guyane (973): conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “mainly clear”, it is 30 °C (feels like 42 °C) and the wind blows at 20 km/h.

Expected range today: 28 °C to 30 °C and a dry sky; keep an eye on thunderstorms. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms, plus the tide times for Cayenne.

Other big cities nearby

Saint-Laurent-du-Maroni 186 km 29°

Cayenne weather data for developers

Use the Cayenne forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

Create a free key

Where does this forecast come from? Our engine, checked every day against 1125 weather stations