AI-generatedCayenne at a glance
- Best time
- Jan – Mar, Sep – Oct
- Warmest month
- Oct · 32°
- Warmest sea
- Jul · 28.4°
- Sunshine a year
- 2,260 h
- Rain a year
- 2,645 mm
- Climate
- Tropical
- Time zone
- UTC−3
- Elevation
- 7 m
Climate in Cayenne
Cayenne has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. October is the warmest month with average highs of 32 °C, while January is the coolest at 28 °C. With around 2,260 hours of sunshine a year, Cayenne is sunny; September is the sunniest month with 8.2 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: January – March, September – October
Good forBeach & swimming
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 31°
- Afternoon, 16:00: about 31°
- Evening, 20:00: about 28°
- Night, 23:00: about 27°
06:1418:15
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:02–06:42 · evening 17:48–18:28
- Blue hour
- Morning 05:53–06:02 · evening 18:28–18:36
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Cayenne in October?
In October, Cayenne is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 28.3 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 65 mm in total. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Cayenne.
More details for October
- Daylight
- 12 h 1 min06:14 – 18:15
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 51 %on averageAll months
- Hot days
- 29 days30 °C or moreAll months
- Time zone
- UTC−3America/Cayenne
How the score comes together
- Temperatureweight 50 %42 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 30 %49 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Sea temperature in Cayenne
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 27.7 – 29.0 °C
Swimming season: All year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Cayenne ranges from 27.0 °C in January to 28.4 °C in July. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea temperature varies from year to year: in July, eight out of ten years were between 27.9 and 29.0 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 27.0° | 26.5° | 27.6° | warm |
| FebruaryFeb | 27.1° | 26.6° | 27.5° | warm |
| MarchMar | 27.3° | 26.7° | 27.8° | warm |
| AprilApr | 27.5° | 27.0° | 28.1° | warm |
| MayMay | 27.8° | 27.2° | 28.5° | warm |
| JuneJun | 28.1° | 27.7° | 28.8° | warm |
| JulyJul | 28.4° | 27.9° | 29.0° | warm |
| AugustAug | 28.3° | 27.7° | 28.9° | warm |
| SeptemberSep | 28.2° | 27.6° | 28.6° | warm |
| OctoberOct | 28.3° | 27.7° | 29.0° | warm |
| NovemberNov | 28.0° | 27.5° | 28.5° | warm |
| DecemberDec | 27.5° | 26.7° | 28.1° | warm |
Sunshine hours in Cayenne
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.7 of 12.0 hours of daylight in Cayenne, 64 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Cayenne
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 13 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in September (UV 14).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Cayenne: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Cayenne has about 11 rainy days with 65 mm of rain in total.
Wind and clouds in Cayenne
How breezy and how cloudy Cayenne is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Cayenne typically peaks at 16 km/h during the day: Beaufort 3, light breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 51 % of the sky over Cayenne: variable cloud, with about 7.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Cayenne
How often the day gets hot in Cayenne (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Cayenne has about 29 hot days, with an average daytime high of 32 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Cayenne
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
HotOctober: nights around 25°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in June (23°), the warmest in October (25°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) on about 365 days a year, mostly all year round.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 54 | 28° | 23° | 27.0° | 5.4 h | 26 | 257 |
| FebruaryFeb | 54 | 28° | 24° | 27.1° | 5.2 h | 22 | 227 |
| MarchMar | 53 | 28° | 24° | 27.3° | 5.9 h | 22 | 181 |
| AprilApr | 50 | 28° | 24° | 27.5° | 5.5 h | 25 | 276 |
| MayMay | 47 | 28° | 24° | 27.8° | 4.6 h | 29 | 437 |
| JuneJun | 49 | 28° | 23° | 28.1° | 5.4 h | 29 | 360 |
| JulyJul | 49 | 29° | 23° | 28.4° | 6.5 h | 27 | 247 |
| AugustAug | 46 | 30° | 24° | 28.3° | 7.6 h | 18 | 124 |
| SeptemberSep | 57 | 32° | 24° | 28.2° | 8.2 h | 10 | 48 |
| OctoberOct | 52 | 32° | 25° | 28.3° | 7.7 h | 11 | 65 |
| NovemberNov | 44 | 30° | 24° | 28.0° | 6.9 h | 20 | 151 |
| DecemberDec | 49 | 28° | 24° | 27.5° | 5.4 h | 27 | 273 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
4.94° N, 52.33° W · 7 m · America/Cayenne
Best time to visit Cayenne
The best time to visit Cayenne is from January to March and from September to October. For a beach holiday with the sea above 21 °C, go from September to October. Rain is most frequent from November to August; the wettest month is May with 437 mm.
Cayenne through the seasons
How the weather changes over the seasons, with averages for each.
Cayenne in the dry season
Sep – Oct
Fair
- 32 °C by day
- Sea 28 °C
- 8 h of sun a day
- 21 rainy days in all
Cayenne in the rainy season
Nov – Aug
Fair
- 28–30 °C by day
- Sea 28 °C
- 6 h of sun a day
- 242 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Cayenne for you.
Your best months: January – March
Based on the climate averages; tap a month to see its details.
Compare two months in Cayenne
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
September has the better holiday weather in Cayenne: score 57 against 52. Daytime highs are about the same. The sea is about as warm in both months. September has one rainy day fewer.
| Month | October | September |
|---|---|---|
| Weather score | 52 | 57better |
| Day high | 32° | 32° |
| Night low | 25° | 24° |
| Sea | 28.3° | 28.2° |
| Sunshine | 7.7 h | 8.2 h |
| Rainy days | 11 | 10better |
| Rainfall | 65 mm | 48 mmbetter |
| Muggy days | 31 | 30better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Sep – Oct
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
Nov – Aug
12 or more rainy days
Cayenne month by month
The typical weather for every month at a glance.
54January28° · Sea 27° · 5 h
In January, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 23 °C. The sea averages 27.0 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 257 mm. The air is often humid and muggy. All in all, January is a so-so month for a holiday in Cayenne.
Cayenne in January54February28° · Sea 27° · 5 h
In February, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.1 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 227 mm. The air is often humid and muggy. All in all, February is a so-so month for a holiday in Cayenne.
Cayenne in February53March28° · Sea 27° · 6 h
In March, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.3 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 181 mm. The air is often humid and muggy. All in all, March is a so-so month for a holiday in Cayenne.
Cayenne in March50April28° · Sea 28° · 6 h
In April, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.5 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 276 mm. The air is often humid and muggy. All in all, April is a so-so month for a holiday in Cayenne.
Cayenne in April47May28° · Sea 28° · 5 h
In May, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.8 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 29 days, totalling 437 mm. The air is often humid and muggy. All in all, May is a so-so month for a holiday in Cayenne.
Cayenne in May49June28° · Sea 28° · 5 h
In June, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 23 °C. The sea averages 28.1 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 29 days, totalling 360 mm. The air is often humid and muggy. All in all, June is a so-so month for a holiday in Cayenne.
Cayenne in June49July29° · Sea 28° · 7 h
In July, Cayenne is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 28.4 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 27 days, totalling 247 mm. On about 5 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Cayenne.
Cayenne in July46August30° · Sea 28° · 8 h
In August, Cayenne is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. The sea averages 28.3 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 18 days, totalling 124 mm. On about 19 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in Cayenne.
Cayenne in August57September32° · Sea 28° · 8 h
In September, Cayenne is hot: daytime highs average 32 °C, and even at night it stays warm at around 24 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 48 mm in total. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Cayenne.
Cayenne in September52October32° · Sea 28° · 8 h
In October, Cayenne is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 28.3 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 65 mm in total. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Cayenne.
Cayenne in October44November30° · Sea 28° · 7 h
In November, Cayenne is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. The sea averages 28.0 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 20 days, totalling 151 mm. On about 15 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a so-so month for a holiday in Cayenne.
Cayenne in November49December28° · Sea 28° · 5 h
In December, Cayenne is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.5 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 27 days, totalling 273 mm. The air is often humid and muggy. All in all, December is a so-so month for a holiday in Cayenne.
Cayenne in DecemberCayenne compared
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Cayenne vs. Paramaribo
In October the holiday weather in Cayenne and Paramaribo is about equally good (score 52 vs. 51). During the day Paramaribo is 2 °C cooler than Cayenne. The sea is about equally warm.
| in October | Cayenne | Paramaribo |
|---|---|---|
| Holiday score | 52 | 51 |
| Daytime high | 32° | 30° |
| Sea | 28° | 28° |
| Sunshine | 8 h | 8 h |
| Rainy days | 11 | 15 |
| Best time | Jan – Mar, Sep – Oct | Feb |
Through the year
Planning a trip to Cayenne
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Cayenne in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Cayenne has its best school-holiday weather during October half-term (score 52) and its weakest during May half-term (score 47).
- 51
Easter holidays
Mar – Apr
Fair
- 28 °C by day
- Sea 27 °C
- 5.6 h of sun a day
- 24 rainy days a month
Keep in mind: Frequent rain
- 47
May half-term
May – Jun
Fair
- 28 °C by day
- Sea 28 °C
- 4.8 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain
- 47
Summer holidays
Jul – Aug
Fair
- 30 °C by day
- Sea 28 °C
- 7.2 h of sun a day
- 21 rainy days a month
Keep in mind: Frequent rain
- 52
October half-term
Oct
FairBest holidays
- 32 °C by day
- Sea 28 °C
- 7.7 h of sun a day
- 11 rainy days a month
Good for: Beach & swimming
- 52
Christmas holidays
Dec – Jan
Fair
- 28 °C by day
- Sea 27 °C
- 5.4 h of sun a day
- 26 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 9 h
- Distance
- 7,030 km
- Time zone
- UTC−3
- Jet lag
- About 3 days (4 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Cayenne
When is the best time to visit Cayenne?
The best time to visit Cayenne is from January to March and from September to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Cayenne?
The sea temperature in Cayenne ranges from 27.0 °C in January to 28.4 °C in July. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Cayenne in October?
Yes. In October the sea averages 28.3 °C – lovely and warm for swimming.
What is the warmest month in Cayenne?
October is the warmest month, with average highs of 32 °C and nights around 25 °C. January is the coolest month at 28 °C.
When does it rain most in Cayenne?
Rain is most frequent from November to August; the wettest month is May with 437 mm. The driest month is September with 48 mm.
How many hours of sunshine does Cayenne get?
Cayenne gets around 2,260 hours of sunshine a year. The sunniest month is September with 8.2 hours a day; in May there are 4.6 hours a day.
What time zone is Cayenne in?
Cayenne uses the time zone America/Cayenne, at UTC−3 all year.
How long is the flight from London to Cayenne?
A nonstop flight from London to Cayenne takes about 9 h, for a straight-line distance of about 7,030 km.
Which school holidays are best for Cayenne?
Cayenne has its best school-holiday weather during October half-term (score 52) and its weakest during May half-term (score 47). Holiday ratings (0–100): Easter holidays 51, May half-term 47, Summer holidays 47, October half-term 52, Christmas holidays 52.
Near Cayenne
Other destinations close by.
Places with a climate like Cayenne
Destinations whose weather through the year is closest to Cayenne's – good alternatives.