AI-generatedGustavia at a glance
- Best time
- Dec – Apr
- Warmest month
- Aug · 32°
- Warmest sea
- Sep · 29.0°
- Sunshine a year
- 3,040 h
- Rain a year
- 788 mm
- Climate
- Tropical
- Time zone
- UTC−4
- Elevation
- 6 m
Climate in Gustavia
Gustavia has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. August is the warmest month with average highs of 32 °C, while January is the coolest at 29 °C. With around 3,040 hours of sunshine a year, Gustavia is very sunny; April is the sunniest month with 8.9 hours a day.
Holiday weather through the year
Best time to visit Gustavia
The best time to visit Gustavia is from December to April. For a beach holiday – sea from 21 °C, warm and mostly dry – go from December to June. The rainy season is from September to November; the wettest month is October with 145 mm.
Gustavia through the seasons
How the weather changes over the seasons, with averages for each.
Gustavia in the dry season
Dec – Aug
Good
- 29–32 °C by day
- Sea 27 °C
- 8.4 h of sun a day
- 98 rainy days in all
Gustavia in the rainy season
Sep – Nov
Fair
- 30–32 °C by day
- Sea 29 °C
- 8.0 h of sun a day
- 49 rainy days in all
Which month for what?
Beach & swimming
Dec – Jun
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
Sep – Nov
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Gustavia for you.
Your best months: January – March
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: December – April
October is the peak of the hurricane season Hurricane season
Where to go in OctoberSea temperature in October
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 28°
- Midday, 13:00: about 31°
- Afternoon, 16:00: about 31°
- Evening, 20:00: about 28°
- Night, 23:00: about 27°
06:0417:50
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 05:51–06:33 · evening 17:21–18:03
- Blue hour
- Morning 05:42–05:51 · evening 18:03–18:12
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 Gustavia compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs stay at about 31° from start to end. The days get 0.5 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 31° | 31° |
| Night-time low | 26° | 26° |
| Sea | 29° | 29° |
| Daylight | 12.0 h | 11.5 h |
What is the weather like in Gustavia in October?
In October, Gustavia is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. The sea averages 29.0 °C – almost as warm as a bath. The sun shines for around 8.1 hours a day. It is the rainy season: rain falls on about 17 days, totalling 145 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Gustavia.
More details for October
- Daylight
- 11 h 46 min06:04 – 17:50
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 27 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 31 days30 °C or moreAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 50 %48 %
- Sunshineweight 20 %85 %
- Few rainy daysweight 30 %8 %
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
Compare two months in Gustavia
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
March has the better holiday weather in Gustavia: score 81 against 43. In March, days are 2 °C cooler than in October. The sea is 3 °C cooler in March. March has 10 fewer rainy days. The sun shines an hour longer a day in March.
| Month | October | March |
|---|---|---|
| Holiday weather score | 43 | 81better |
| Daytime high | 31° | 29° |
| Night-time low | 26° | 24° |
| Sea | 29.0° | 26.3° |
| Sunshine | 8.1 h | 8.8 hbetter |
| Rainy days | 17 | 7better |
| Rainfall | 145 mm | 21 mmbetter |
| Muggy days | 31 | 28better |
Based on the climate averages 1996–2025.
Gustavia month by month
The typical weather for every month at a glance.
74January29° · Sea 27° · 8.2 h
In January, Gustavia is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 26.6 °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 29 mm in total. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, January is a good month for a holiday in Gustavia.
Gustavia in January80February29° · Sea 26° · 8.6 h
In February, Gustavia is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. The sea averages 26.2 °C – lovely and warm for swimming. The sun shines for around 8.6 hours a day. Rain falls on about 8 days, adding up to 25 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, February is an excellent month for a holiday in Gustavia.
Gustavia in February81March29° · Sea 26° · 8.8 h
In March, Gustavia is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 26.3 °C – lovely and warm for swimming. The sun shines for around 8.8 hours a day. Rain falls on about 7 days, adding up to 21 mm. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 29 km/h. All in all, March is an excellent month for a holiday in Gustavia.
Gustavia in March74April30° · Sea 27° · 8.9 h
In April, Gustavia is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. The sea averages 26.8 °C – lovely and warm for swimming. The sun shines for around 8.9 hours a day. Rain falls on about 9 days, adding up to 35 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 28 km/h. All in all, April is a good month for a holiday in Gustavia.
Gustavia in April59May30° · Sea 28° · 8.1 h
In May, Gustavia is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 27.5 °C – lovely and warm for swimming. The sun shines for around 8.1 hours a day. Rain is frequent, with about 12 rainy days and 56 mm in total. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 28 km/h. All in all, May is a so-so month for a holiday in Gustavia.
Gustavia in May56June31° · Sea 28° · 8.2 h
In June, Gustavia is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. The sea averages 28.0 °C – lovely and warm for swimming. The sun shines for around 8.2 hours a day. Rain is frequent, with about 11 rainy days and 49 mm in total. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, June is a so-so month for a holiday in Gustavia.
Gustavia in June46July32° · Sea 28° · 8.4 h
In July, Gustavia is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8.4 hours a day. It rains often – on about 15 days, adding up to 75 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 33 km/h. All in all, July is a so-so month for a holiday in Gustavia.
Gustavia in July43August32° · Sea 29° · 8.7 h
In August, Gustavia is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 28.7 °C – lovely and warm for swimming. The sun shines for around 8.7 hours a day. It rains often – on about 16 days, adding up to 90 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, August is a so-so month for a holiday in Gustavia.
Gustavia in August40September32° · Sea 29° · 8.1 h
In September, Gustavia is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 29.0 °C – almost as warm as a bath. The sun shines for around 8.1 hours a day. It is the rainy season: rain falls on about 17 days, totalling 111 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Gustavia.
Gustavia in September43October31° · Sea 29° · 8.1 h
In October, Gustavia is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. The sea averages 29.0 °C – almost as warm as a bath. The sun shines for around 8.1 hours a day. It is the rainy season: rain falls on about 17 days, totalling 145 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Gustavia.
Gustavia in October53November30° · Sea 28° · 7.9 h
In November, Gustavia is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 28.4 °C – lovely and warm for swimming. The sun shines for around 7.9 hours a day. It is the rainy season: rain falls on about 15 days, totalling 106 mm. On about 21 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 Gustavia.
Gustavia in November66December29° · Sea 27° · 7.9 h
In December, Gustavia is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 27.4 °C – lovely and warm for swimming. The sun shines for around 7.9 hours a day. Rain is frequent, with about 12 rainy days and 47 mm in total. The air is often humid and muggy. It is often windy: on a typical day the wind peaks at around 31 km/h. All in all, December is a good month for a holiday in Gustavia.
Gustavia in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Gustavia
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 26°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in February (23°), the warmest in August (27°). 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 358 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 | 74 | 29° | 24° | 26.6° | 8.2 h | 10 | 29 |
| FebruaryFeb | 80 | 29° | 23° | 26.2° | 8.6 h | 8 | 25 |
| MarchMar | 81 | 29° | 24° | 26.3° | 8.8 h | 7 | 21 |
| AprilApr | 74 | 30° | 24° | 26.8° | 8.9 h | 9 | 35 |
| MayMay | 59 | 30° | 25° | 27.5° | 8.1 h | 12 | 56 |
| JuneJun | 56 | 31° | 26° | 28.0° | 8.2 h | 11 | 49 |
| JulyJul | 46 | 32° | 26° | 28.2° | 8.4 h | 15 | 75 |
| AugustAug | 43 | 32° | 27° | 28.7° | 8.7 h | 16 | 90 |
| SeptemberSep | 40 | 32° | 27° | 29.0° | 8.1 h | 17 | 111 |
| OctoberOct | 43 | 31° | 26° | 29.0° | 8.1 h | 17 | 145 |
| NovemberNov | 53 | 30° | 25° | 28.4° | 7.9 h | 15 | 106 |
| DecemberDec | 66 | 29° | 24° | 27.4° | 7.9 h | 12 | 47 |
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
17.90° N, 62.85° W · 6 m · America/St_Barthelemy
Sea temperature in Gustavia
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 28.5 – 29.4 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Gustavia ranges from 26.2 °C in February to 29.0 °C in September. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in September, while the air already peaks in August. The sea temperature varies from year to year: in September, eight out of ten years were between 28.6 and 29.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 26.6° | 26.2° | 27.2° | warm |
| FebruaryFeb | 26.2° | 25.5° | 26.9° | warm |
| MarchMar | 26.3° | 25.7° | 26.8° | warm |
| AprilApr | 26.8° | 26.2° | 27.5° | warm |
| MayMay | 27.5° | 27.0° | 28.1° | warm |
| JuneJun | 28.0° | 27.3° | 28.5° | warm |
| JulyJul | 28.2° | 27.6° | 28.9° | warm |
| AugustAug | 28.7° | 28.2° | 29.4° | warm |
| SeptemberSep | 29.0° | 28.6° | 29.7° | very warm |
| OctoberOct | 29.0° | 28.5° | 29.4° | very warm |
| NovemberNov | 28.4° | 27.9° | 28.8° | warm |
| DecemberDec | 27.4° | 26.8° | 27.9° | warm |
Sunshine hours in Gustavia
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 8.1 of 11.8 hours of daylight in Gustavia, 69 % 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 Gustavia: 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, Gustavia has about 17 rainy days with 145 mm of rain in total.
UV index in Gustavia
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 10 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in May (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 15 min
- Light brown skin
- about 25 min
- Olive skin
- about 30 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 Gustavia
How breezy and how cloudy Gustavia 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 Gustavia typically peaks at 27 km/h during the day: Beaufort 4, moderate 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, and here it is that strong all year.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 56 % of the sky over Gustavia: variable cloud, with about 8.1 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 Gustavia
How often the day gets hot in Gustavia (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, it is hot in Gustavia every day, 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 Gustavia
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Gustavia 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.
Gustavia has its best school-holiday weather during the Easter holidays (score 76) and its weakest during October half-term (score 43).
- 76
Easter holidays
Mar – Apr
GoodBest holidays
- 29 °C by day
- Sea 27 °C
- 8.9 h of sun a day
- 8 rainy days a month
Good for: Beach & swimming
- 58
May half-term
May – Jun
Fair
- 31 °C by day
- Sea 28 °C
- 8.1 h of sun a day
- 12 rainy days a month
Good for: Beach & swimming
- 44
Summer holidays
Jul – Aug
Fair
- 32 °C by day
- Sea 29 °C
- 8.6 h of sun a day
- 16 rainy days a month
Keep in mind: Storm season
- 43
October half-term
Oct
Fair
- 31 °C by day
- Sea 29 °C
- 8.1 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain, Storm season
- 70
Christmas holidays
Dec – Jan
Good
- 29 °C by day
- Sea 27 °C
- 8.1 h of sun a day
- 11 rainy days a month
Good for: Beach & swimming
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 8 h 25 min
- Distance
- 6,560 km
- Time zone
- UTC−4
- Jet lag
- About 3 days (5 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.
Storm season
Gustavia lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Gustavia compared
Put Gustavia side by side with another destination.
Gustavia vs Sint Maarten (Philipsburg)
In October the holiday weather in Gustavia and Sint Maarten (Philipsburg) is about equally good (score 43 vs 44). During the day it is about as warm in Sint Maarten (Philipsburg) as in Gustavia. The sea is about equally warm.
| in October | Gustavia | Sint Maarten (Philipsburg) |
|---|---|---|
| Holiday weather score | 43 | 44 |
| Daytime high | 31° | 31° |
| Sea | 29° | 29° |
| Sunshine | 8 h | 8 h |
| Rainy days | 17 | 17 |
| Best time | Dec – Apr | Dec – Jun |
Through the year
Near Gustavia
Other destinations close by.
Places with a climate like Gustavia
Destinations whose weather through the year is closest to Gustavia's – good alternatives.
Frequently asked questions about Gustavia
When is the best time to visit Gustavia?
The best time to visit Gustavia is from December to April. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Gustavia?
The sea temperature in Gustavia ranges from 26.2 °C in February to 29.0 °C in September. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Gustavia in October?
Yes. In October the sea averages 29.0 °C – almost as warm as a bath.
What is the warmest month in Gustavia?
August is the warmest month, with average highs of 32 °C and nights around 27 °C. January is the coolest month at 29 °C.
When does it rain most in Gustavia?
The rainy season is from September to November; the wettest month is October with 145 mm. The driest month is March with 21 mm.
How many hours of sunshine does Gustavia get?
Gustavia gets around 3,040 hours of sunshine a year. The sunniest month is April with 8.9 hours a day; in November there are 7.9 hours a day.
What time zone is Gustavia in?
Gustavia is on UTC−4 all year.
How long is the flight from London to Gustavia?
A nonstop flight from London to Gustavia takes about 8 h 25 min, for a straight-line distance of about 6,560 km.
When is hurricane season in Gustavia?
Gustavia lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Gustavia?
Gustavia has its best school-holiday weather during the Easter holidays (score 76) and its weakest during October half-term (score 43). Holiday ratings (0–100): Easter holidays 76, May half-term 58, summer holidays 44, October half-term 43, Christmas holidays 70.