Gustavia weather in October

In October, Gustavia sees average daytime highs of 28°C and overnight lows near 26°C, with 129 mm of rain across 16.2 wet days and about 11.6 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 42% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of October to 11 h 24 min by month's end. Set against the rest of the year, October is Gustavia's 10th-clearest and 12th-windiest month. For the whole year in context, see Gustavia's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
26°
9th coldest
Rainfall
129 mm
16.2 wet days
Daylight
11 h 36 min
6:09 AM – 5:44 PM
Cloud cover
54%
10th clearest
Wind
21 km/h
12th windiest
Solar energy
5.3 kWh/m²
Travel score
5.6
out of 10

Gustavia is main settlement and capital city of St. Barthélemy.

Founded
1785

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical October day in Gustavia reaches about 28°C in the afternoon and slips back to 26°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 28°C. Set against its neighbours, October runs on par with September and on par with November.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826
312826

How October really feels in Gustavia

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Gustavia weather by month

How October compares with the rest of the year at a glance. October is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 24°269.1117.5
Feb25° / 24°206.411.47.8
Mar25° / 24°195.411.98.1
Apr26° / 25°307.412.47.5
May27° / 26°6111.512.86.5
Jun27° / 26°4610.313.16.4
Jul28° / 26°7013.8136.1
Aug28° / 27°841512.65.6
Sep28° / 27°11416.812.15.1
Oct28° / 26°12916.211.65.6
Nov27° / 26°10114.111.26.1
Dec26° / 25°4610.810.97.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
35050
45149
55149
65248
75347
85347
95446
105446
115545
125545
135644
145644
155743
165743
175842
185842
195941
205941
216040
226040
236040
246139
256139
266238
276238
286238
296238
306139
316238

Chance of precipitation in October

Any precipitation

Gustavia gets around 129 mm of rain over 16.2 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 53% and peaks near 55% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
155
255
355
455
555
655
755
855
955
1055
1155
1255
1355
1454
1554
1654
1753
1853
1952
2052
2151
2251
2350
2450
2550
2650
2751
2851
2951
3052
3152

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the oppressive band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
106337
206337
306436
406535
506634
606634
706733
806733
906832
1006931
1107030
1207129
1307129
1407228
1507228
1607327
1707327
1807426
1917425
2017425
2117524
2217524
2317623
2417722
2517821
2617821
2717920
2818019
2928018
3028117
3128216

Wind in October

Winds average 21 km/h in October, the calmest month.

Across October, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 48 min at the start of October to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over October. Sunrise moves from 6:05 AM to 6:14 AM, and sunset from 5:56 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:055:56
211.86:055:55
311.86:065:54
411.86:065:53
511.86:065:52
611.86:065:51
711.76:065:51
811.76:075:50
911.76:075:49
1011.76:075:48
1111.76:075:48
1211.76:085:47
1311.66:085:46
1411.66:085:45
1511.66:095:45
1611.66:095:44
1711.66:095:43
1811.66:095:43
1911.56:105:42
2011.56:105:41
2111.56:105:41
2211.56:115:40
2311.56:115:40
2411.56:125:39
2511.46:125:39
2611.46:125:38
2711.46:135:37
2811.46:135:37
2911.46:135:36
3011.46:145:36
3111.46:145:36

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.3 kWh/m².

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.68 kWh/m² in April across the year — October's 5.3 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in October

Hazard calendar for Gustavia

In seasonPeak

In October, Gustavia sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.

Gustavia sits in the Atlantic hurricane belt; the season peaks August–October.

Gustavia's rainy season runs May–May, when most of the year's rain falls.

Gustavia sees seasonal dust haze (July), heaviest in July.

Atlantic hurricane
Rainy season
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Gustavia?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.6
Sightseeing
10th-best month of the year
5.9
Beach & pool
11th-best month of the year

October is a reasonable time to visit Gustavia for sightseeing.

What to pack for Gustavia in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Gustavia sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 16 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Gustavia in October

The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 29°C and coldest in February near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar26Warm
Apr27Warm
May27Warm
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Gustavia in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gustavia peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 11UV 13Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Gustavia in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Gustavia is worst in July — around 23 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1223 µg/m³Dec 226 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar7Good
Apr9Good
May13Moderate
Jun22Moderate
Jul23Moderate
Aug19Moderate
Sep15Moderate
Oct16Moderate
Nov9Good
Dec6Good
Location & terrain

Where is Gustavia?

Gustavia sits at 17.9°N, 62.8°W, 6 m above sea level, in Saint Barthelemy. The nearest listed city is Philipsburg, 25 km away.

Topography around Gustavia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Gustavia.

Within 3 km, the terrain around Gustavia has only modest variations in elevation — a maximum elevation change of 187 m around an average of 22 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 273 m; within 80 km, large variations in elevation — a maximum elevation change of 1,092 m.

The land around Gustavia is covered by water (66%) and trees (20%) within 3 km, water (98%) within 16 km, and water (97%) within 80 km.

3 km
187 m
16 km
273 m
80 km
1,092 m
treesshrubsgrasslandartificial surfacesbare terrainwater
October weather nearby: Philipsburg 25 km · Marigot 31 km · The Valley 42 km · Basseterre 68 km · Codrington 112 km · St. John's 137 km · Brades 140 km · Plymouth 149 km

Saint Barthelemy travel facts

Travel advisory
Level 1
Exercise Normal Precautions

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Gustavia (17.8962°, -62.8498°, elevation 6 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).