Cove
Anse du Grand Cul-de-Sac
Saint Barthelemy · Caribbean Sea
17.9101, -62.8015 · Gustavia, 5 km
- 29°Sea · September
- 29°High · September
- 9.6 hSunshine · April
Your month at the beach
Anse du Grand Cul-de-Sac in January
- 26°CAir, daytime high26°C at night
- 26°CSea temperature
- 8.4 hSunshine a day
- 5 daysRainy days in the month20 mm in total
- 25 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in February
- 26°CAir, daytime high25°C at night
- 26°CSea temperature
- 9.0 hSunshine a day
- 4 daysRainy days in the month11 mm in total
- 25 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in March
- 26°CAir, daytime high25°C at night
- 26°CSea temperature
- 9.4 hSunshine a day
- 4 daysRainy days in the month16 mm in total
- 23 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in April
- 26°CAir, daytime high26°C at night
- 27°CSea temperature
- 9.6 hSunshine a day
- 6 daysRainy days in the month28 mm in total
- 23 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in May
- 27°CAir, daytime high26°C at night
- 27°CSea temperature
- 9.0 hSunshine a day
- 12 daysRainy days in the month62 mm in total
- 23 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in June
- 28°CAir, daytime high27°C at night
- 28°CSea temperature
- 9.2 hSunshine a day
- 10 daysRainy days in the month43 mm in total
- 25 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in July
- 28°CAir, daytime high28°C at night
- 28°CSea temperature
- 9.2 hSunshine a day
- 13 daysRainy days in the month54 mm in total
- 27 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in August
- 29°CAir, daytime high28°C at night
- 29°CSea temperature
- 9.2 hSunshine a day
- 15 daysRainy days in the month69 mm in total
- 24 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in September
- 29°CAir, daytime high28°C at night
- 29°CSea temperature
- 8.6 hSunshine a day
- 18 daysRainy days in the month93 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in October
- 28°CAir, daytime high28°C at night
- 29°CSea temperature
- 8.0 hSunshine a day
- 16 daysRainy days in the month116 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in November
- 28°CAir, daytime high27°C at night
- 28°CSea temperature
- 7.8 hSunshine a day
- 14 daysRainy days in the month80 mm in total
- 22 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Anse du Grand Cul-de-Sac in December
- 27°CAir, daytime high26°C at night
- 27°CSea temperature
- 7.9 hSunshine a day
- 9 daysRainy days in the month41 mm in total
- 25 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
The beach itself
- ExcellentBathing water qualityOfficial EU classification, 2025 season
- 17Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap
- 4 kmAirport: St. Jean Airport (SBH)In a straight line; by road it is further Car hire at Princess Juliana International Airport (SXM) ↗
No reliable information yet on: wheelchair access, lifeguards.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
January from 2020 to 2025
In January 2025 the sea averaged 27.5 °C — 1.0 °C above the 1991–2020 average.
1991–2020 average: 26.5 °C
1991–2020 average: 26.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 27.0 °C — 0.9 °C above the 1991–2020 average.
1991–2020 average: 26.1 °C
1991–2020 average: 25.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 27.2 °C — 1.1 °C above the 1991–2020 average.
1991–2020 average: 26.1 °C
1991–2020 average: 25.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 27.2 °C — 0.5 °C above the 1991–2020 average.
1991–2020 average: 26.7 °C
1991–2020 average: 26.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 27.7 °C — 0.3 °C above the 1991–2020 average.
1991–2020 average: 27.4 °C
1991–2020 average: 27.2 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 27.9 °C — about the same as the 1991–2020 average.
1991–2020 average: 27.9 °C
1991–2020 average: 27.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 28.5 °C — 0.5 °C above the 1991–2020 average.
1991–2020 average: 28.0 °C
1991–2020 average: 28.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 29.2 °C — 0.7 °C above the 1991–2020 average.
1991–2020 average: 28.5 °C
1991–2020 average: 28.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 29.6 °C — 0.8 °C above the 1991–2020 average.
1991–2020 average: 28.8 °C
1991–2020 average: 28.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 29.4 °C — 0.6 °C above the 1991–2020 average.
1991–2020 average: 28.8 °C
1991–2020 average: 28.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 28.6 °C — 0.4 °C above the 1991–2020 average.
1991–2020 average: 28.2 °C
1991–2020 average: 27.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 27.8 °C — 0.5 °C above the 1991–2020 average.
1991–2020 average: 27.3 °C
1991–2020 average: 26.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan26°8 h20 mm
- Feb26°9 h11 mm
- Mar26°9 h16 mm
- Apr27°10 h28 mm
- May27°9 h62 mm
- Jun28°9 h43 mm
- Jul28°9 h54 mm
- Aug29°9 h69 mm
- Sep29°9 h93 mm
- Oct29°8 h116 mm
- Nov28°8 h80 mm
- Dec27°8 h41 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Anse du Grand Cul-de-Sac: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 26 | 26 | 26 | 20 | 5 | 8.4 | 25 |
| February | 26 | 25 | 26 | 11 | 4 | 9.0 | 25 |
| March | 26 | 25 | 26 | 16 | 4 | 9.4 | 23 |
| April | 26 | 26 | 27 | 28 | 6 | 9.6 | 23 |
| May | 27 | 26 | 27 | 62 | 12 | 9.0 | 23 |
| June | 28 | 27 | 28 | 43 | 10 | 9.2 | 25 |
| July | 28 | 28 | 28 | 54 | 13 | 9.2 | 27 |
| August | 29 | 28 | 29 | 69 | 15 | 9.2 | 24 |
| Septemberwarmest sea | 29 | 28 | 29 | 93 | 18 | 8.6 | 20 |
| October | 28 | 28 | 29 | 116 | 16 | 8.0 | 20 |
| November | 28 | 27 | 28 | 80 | 14 | 7.8 | 22 |
| December | 27 | 26 | 27 | 41 | 9 | 7.9 | 25 |
Swipe sideways to see the other columns.
Photos
Photos shared by their authors on Wikimedia Commons, with its colours adjusted.
Plan your trip
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 33 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 9 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 33 km away |
| Bathing water quality | European Environment Agency | 0.2 km away |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |
More about this place: Wikipedia See every data source →