AI-generatedKourou at a glance
- Best time
- Jul – Nov
- Warmest month
- Sep · 31°
- Warmest sea
- Jul · 28.4°
- Sunshine a year
- 2,280 h
- Rain a year
- 2,559 mm
- Climate
- Tropical
- Time zone
- UTC−3
- Elevation
- 7 m
Climate in Kourou
Kourou has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. September is the warmest month with average highs of 31 °C, while January is the coolest at 28 °C. With around 2,280 hours of sunshine a year, Kourou is sunny; September is the sunniest month with 8.2 hours a day.
Holiday weather through the year
Best time to visit Kourou
The best time to visit Kourou is from July to November. For a beach holiday – sea from 21 °C, warm and mostly dry – go in September. The rainy season is from April to June and in December; the wettest month is May with 446 mm.
Kourou through the seasons
How the weather changes over the seasons, with averages for each.
Kourou in the dry season
Jan – Mar, Jul – Nov
Good
- 28–31 °C by day
- Sea 28 °C
- 6.7 h of sun a day
- 162 rainy days in all
Kourou in the rainy season
Apr – Jun, Dec
Good
- 29 °C by day
- Sea 28 °C
- 5.3 h of sun a day
- 111 rainy days in all
Which month for what?
Beach & swimming
Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
Apr – Jun, Dec
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Kourou for you.
Your best months: January, March, September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Excellent
Best time to visit: July – November
Where to go in OctoberSea temperature in October
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 26°
06:1618:17
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 06:03–06:44 · evening 17:49–18:29
- Blue hour
- Morning 05:55–06:03 · evening 18:29–18:38
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.
October in Kourou compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs stay at about 31° from start to end.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 31° | 31° |
| Night-time low | 24° | 24° |
| Sea | 28° | 28° |
| Daylight | 12.1 h | 11.9 h |
What is the weather like in Kourou in October?
In October, Kourou is hot: daytime highs average 31 °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 7.7 hours a day. Rain is frequent, with about 13 rainy days and 56 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, October is an excellent month for a holiday in Kourou.
More details for October
- Daylight
- 12 h 1 min06:16 – 18:17
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 51 %on averageAll months
- Hot days
- 28 days30 °C or moreAll months
- Time zone
- UTC−3offset from UTC
How the score comes together
- Temperatureweight 35 %97 %
- Seaweight 25 %100 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 20 %37 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Kourou
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 Kourou: score 87 against 82. Daytime highs are about the same. The sea is about as warm in both months. September has 3 fewer rainy days.
| Month | October | September |
|---|---|---|
| Holiday weather score | 82 | 87better |
| Daytime high | 31° | 31° |
| Night-time low | 24° | 24° |
| Sea | 28.3° | 28.2° |
| Sunshine | 7.7 h | 8.2 hbetter |
| Rainy days | 13 | 10better |
| Rainfall | 56 mm | 43 mmbetter |
| Muggy days | 31 | 30better |
Based on the climate averages 1996–2025.
Kourou month by month
The typical weather for every month at a glance.
68January28° · Sea 27° · 5.4 h
In January, Kourou is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.0 °C – lovely and warm for swimming. Expect around 5.4 hours of sunshine a day. It rains often – on about 27 days, adding up to 261 mm. The air is often humid and muggy. All in all, January is a good month for a holiday in Kourou.
Kourou in January68February28° · Sea 27° · 5.3 h
In February, Kourou is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 27.0 °C – lovely and warm for swimming. Expect around 5.3 hours of sunshine a day. It rains often – on about 23 days, adding up to 236 mm. The air is often humid and muggy. All in all, February is a good month for a holiday in Kourou.
Kourou in February70March29° · Sea 27° · 6.0 h
In March, Kourou is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 27.2 °C – lovely and warm for swimming. Expect around 6.0 hours of sunshine a day. It rains often – on about 24 days, adding up to 178 mm. The air is often humid and muggy. All in all, March is a good month for a holiday in Kourou.
Kourou in March69April29° · Sea 28° · 5.6 h
In April, Kourou is hot: daytime highs average 29 °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 5.6 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 268 mm. On about 7 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is a good month for a holiday in Kourou.
Kourou in April66May29° · Sea 28° · 4.7 h
In May, Kourou is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 27.7 °C – lovely and warm for swimming. Expect around 4.7 hours of sunshine a day. It is the rainy season: rain falls on about 29 days, totalling 446 mm. On about 9 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a good month for a holiday in Kourou.
Kourou in May68June29° · Sea 28° · 5.3 h
In June, Kourou is hot: daytime highs average 29 °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 5.3 hours of sunshine a day. It is the rainy season: rain falls on about 29 days, totalling 359 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a good month for a holiday in Kourou.
Kourou in June72July30° · Sea 28° · 6.6 h
In July, Kourou is hot: daytime highs average 30 °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 6.6 hours a day. It rains often – on about 27 days, adding up to 214 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Kourou.
Kourou in July77August31° · Sea 28° · 7.6 h
In August, Kourou is hot: daytime highs average 31 °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 7.6 hours a day. It rains often – on about 17 days, adding up to 95 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Kourou.
Kourou in August87September31° · Sea 28° · 8.2 h
In September, Kourou is hot: daytime highs average 31 °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 8.2 hours a day. Rain is frequent, with about 10 rainy days and 43 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, September is an excellent month for a holiday in Kourou.
Kourou in September82October31° · Sea 28° · 7.7 h
In October, Kourou is hot: daytime highs average 31 °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 7.7 hours a day. Rain is frequent, with about 13 rainy days and 56 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, October is an excellent month for a holiday in Kourou.
Kourou in October73November30° · Sea 28° · 6.8 h
In November, Kourou 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 6.8 hours a day. It rains often – on about 21 days, adding up to 135 mm. On about 16 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a good month for a holiday in Kourou.
Kourou in November68December29° · Sea 28° · 5.5 h
In December, Kourou is hot: daytime highs average 29 °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 5.5 hours of sunshine a day. It is the rainy season: rain falls on about 27 days, totalling 268 mm. The air is often humid and muggy. All in all, December is a good month for a holiday in Kourou.
Kourou in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Kourou
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 (15+ muggy days)
HotOctober: nights around 24°. 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 March (24°). 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) all year, on about 365 days a year.
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 | 68 | 28° | 24° | 27.0° | 5.4 h | 27 | 261 |
| FebruaryFeb | 68 | 28° | 24° | 27.0° | 5.3 h | 23 | 236 |
| MarchMar | 70 | 29° | 24° | 27.2° | 6.0 h | 24 | 178 |
| AprilApr | 69 | 29° | 24° | 27.5° | 5.6 h | 26 | 268 |
| MayMay | 66 | 29° | 24° | 27.7° | 4.7 h | 29 | 446 |
| JuneJun | 68 | 29° | 23° | 28.1° | 5.3 h | 29 | 359 |
| JulyJul | 72 | 30° | 23° | 28.4° | 6.6 h | 27 | 214 |
| AugustAug | 77 | 31° | 24° | 28.3° | 7.6 h | 17 | 95 |
| SeptemberSep | 87 | 31° | 24° | 28.2° | 8.2 h | 10 | 43 |
| OctoberOct | 82 | 31° | 24° | 28.3° | 7.7 h | 13 | 56 |
| NovemberNov | 73 | 30° | 24° | 28.0° | 6.8 h | 21 | 135 |
| DecemberDec | 68 | 29° | 24° | 27.5° | 5.5 h | 27 | 268 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), 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
5.16° N, 52.64° W · 7 m · America/Cayenne
Sea temperature in Kourou
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 Kourou 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° | 27.5° | warm |
| FebruaryFeb | 27.0° | 26.6° | 27.5° | warm |
| MarchMar | 27.2° | 26.6° | 27.7° | warm |
| AprilApr | 27.5° | 27.0° | 28.0° | warm |
| MayMay | 27.7° | 27.2° | 28.4° | warm |
| JuneJun | 28.1° | 27.6° | 28.7° | warm |
| JulyJul | 28.4° | 27.9° | 29.0° | warm |
| AugustAug | 28.3° | 27.7° | 28.9° | warm |
| SeptemberSep | 28.2° | 27.7° | 28.7° | warm |
| OctoberOct | 28.3° | 27.7° | 29.0° | warm |
| NovemberNov | 28.0° | 27.5° | 28.6° | warm |
| DecemberDec | 27.5° | 26.7° | 28.1° | warm |
Sunshine hours in Kourou
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 Kourou, 64 % of the daylight hours.
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.
Rain in Kourou: 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, Kourou has about 13 rainy days with 56 mm of rain in total.
UV index in Kourou
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 the time, 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.
Wind and clouds in Kourou
How breezy and how cloudy Kourou 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 Kourou typically peaks at 18 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Jan – Apr.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 51 % of the sky over Kourou: 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 Kourou
How often the day gets hot in Kourou (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, Kourou has about 28 hot days, with an average daytime high of 31 °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
Planning a trip to Kourou
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Kourou 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.
Kourou has its best school-holiday weather during October half-term (score 82) and its weakest during May half-term (score 66).
- 69
Easter holidays
Mar – Apr
Good
- 29 °C by day
- Sea 27 °C
- 5.7 h of sun a day
- 25 rainy days a month
Keep in mind: Frequent rain
- 66
May half-term
May – Jun
Good
- 29 °C by day
- Sea 28 °C
- 4.8 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain
- 75
Summer holidays
Jul – Aug
Good
- 31 °C by day
- Sea 28 °C
- 7.2 h of sun a day
- 20 rainy days a month
- 82
October half-term
Oct
ExcellentBest holidays
- 31 °C by day
- Sea 28 °C
- 7.7 h of sun a day
- 13 rainy days a month
- 68
Christmas holidays
Dec – Jan
Good
- 28 °C by day
- Sea 27 °C
- 5.5 h of sun a day
- 27 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.
Compare & alternatives
Kourou compared
Put Kourou side by side with another destination.
Kourou vs Cayenne
In October Kourou has the better holiday weather (score 82 vs 77). During the day Cayenne is 2 °C warmer than Kourou. The sea is about equally warm.
| in October | Kourou | Cayenne |
|---|---|---|
| Holiday weather score | 82 | 77 |
| Daytime high | 31° | 33° |
| Sea | 28° | 28° |
| Sunshine | 8 h | 8 h |
| Rainy days | 13 | 11 |
| Best time | Jul – Nov | Sep – Oct, Dec – Mar |
Through the year
French Guiana in October: the best places
In October, Kourou ranks 1 of 3 destinations in this country.
- KourouThis page31°28°82
- 2Saint-Laurent-du-Maroni33°28°65
- 3Cayenne33°28°45
Near Kourou
Other destinations close by.
Places with a climate like Kourou
Destinations whose weather through the year is closest to Kourou's – good alternatives.
Frequently asked questions about Kourou
When is the best time to visit Kourou?
The best time to visit Kourou is from July to November. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Kourou?
The sea temperature in Kourou 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 Kourou in October?
Yes. In October the sea averages 28.3 °C – lovely and warm for swimming.
What is the warmest month in Kourou?
September is the warmest month, with average highs of 31 °C and nights around 24 °C. January is the coolest month at 28 °C.
When does it rain most in Kourou?
The rainy season is from April to June and in December; the wettest month is May with 446 mm. The driest month is September with 43 mm.
How many hours of sunshine does Kourou get?
Kourou gets around 2,280 hours of sunshine a year. The sunniest month is September with 8.2 hours a day; in May there are 4.7 hours a day.
What time zone is Kourou in?
Kourou is on UTC−3 all year.
How long is the flight from London to Kourou?
A nonstop flight from London to Kourou takes about 9 h, for a straight-line distance of about 7,030 km.
Which school holidays are best for Kourou?
Kourou has its best school-holiday weather during October half-term (score 82) and its weakest during May half-term (score 66). Holiday ratings (0–100): Easter holidays 69, May half-term 66, summer holidays 75, October half-term 82, Christmas holidays 68.