Gustavia weather in June

In June, Gustavia sees average daytime highs of 27°C and overnight lows near 26°C, with 46 mm of rain across 10.3 wet days and about 13.1 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 44% of the time in June, and the air most often feels oppressive.

Daylight stretches from about 13 hours at the start of June to 13 h 06 min by month's end. Set against the rest of the year, June is Gustavia's 9th-clearest and 3rd-windiest month. For the whole year in context, see Gustavia's year-round climate.

Daytime high
27°
5th warmest
Overnight low
26°
9th coldest
Rainfall
46 mm
10.3 wet days
Daylight
13 h 06 min
5:40 AM – 6:44 PM
Cloud cover
53%
9th clearest
Wind
26 km/h
3rd windiest
Solar energy
6.67 kWh/m²
Travel score
6.4
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 June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical June day in Gustavia reaches about 27°C in the afternoon and slips back to 26°C overnight — a 1°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, June runs on par with May and on par with July.

24°26°28°30°32°151015202530
Avg high (°C)Avg low (°C)
12726
22726
32726
42726
52726
62726
72726
82726
92726
102726
112726
122726
132726
142726
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826

How June really feels in Gustavia

Once humidity and wind are folded in, June 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

June 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 June compares with the rest of the year at a glance. June is the 5th-warmest and 8th-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 June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 14% of June, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25347
35347
45446
55446
65545
75545
85743
95743
105743
115743
125743
135743
145743
155743
165842
175941
185941
196040
206040
216139
226040
236139
246139
256238
266337
276337
286436
296436
306436

Chance of precipitation in June

Any precipitation

Gustavia gets around 46 mm of rain over 10.3 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
337
437
536
636
736
835
935
1035
1135
1235
1336
1436
1536
1636
1736
1835
1935
2035
2135
2234
2334
2434
2534
2634
2734
2834
2934
3035

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the oppressive band about 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11909
21909
31909
41909
51909
60919
709010
809010
909010
1008911
1108812
1208812
1308713
1408614
1508515
1608515
1708416
1808416
1908317
2008317
2108317
2208317
2308317
2408317
2508317
2608317
2708317
2808317
2908317
3008218

Wind in June

Winds average 26 km/h in June.

Across June, daily wind ranges from about 24 km/h on the calmest days to 28 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
124breezy
224breezy
324breezy
425breezy
525breezy
625breezy
725breezy
825breezy
925breezy
1026breezy
1126breezy
1226breezy
1326breezy
1426breezy
1526breezy
1627breezy
1727breezy
1827breezy
1927breezy
2027breezy
2127breezy
2227breezy
2328breezy
2428breezy
2528breezy
2628breezy
2728breezy
2828breezy
2928breezy
3028breezy

Sunrise & sunset in June

DaylightNight

Daylight runs from about 13 hours at the start of June to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:39 AM to 5:43 AM, and sunset from 6:39 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:396:39
213.05:396:39
313.05:396:39
413.05:396:40
513.05:396:40
613.05:396:40
713.05:396:41
813.05:396:41
913.05:396:41
1013.05:396:42
1113.05:396:42
1213.15:396:42
1313.15:396:43
1413.15:396:43
1513.15:406:43
1613.15:406:44
1713.15:406:44
1813.15:406:44
1913.15:406:44
2013.15:406:45
2113.15:416:45
2213.15:416:45
2313.15:416:45
2413.15:416:46
2513.15:416:46
2613.15:426:46
2713.15:426:46
2813.15:426:46
2913.15:426:46
3013.15:436:46

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.67 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 — June's 6.67 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in June

Hazard calendar for Gustavia

In seasonPeak

In June, Gustavia sits inside its atlantic hurricane 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 July–November, 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 June a good time to visit Gustavia?

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

6.4
Sightseeing
7th-best month of the year
6.7
Beach & pool
6th-best month of the year

June is a reasonable time to visit Gustavia for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Gustavia in June

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

In June, Gustavia sees daytime highs around 27°C and nights near 26°C. Pack light clothes and sun protection. Worth having: rain gear and a windbreaker. About 10 days see rain.

light clothessun protectionrain geara windbreaker

Sea temperature near Gustavia in June

The nearest coast averages about 28°C in June — 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 June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 12 (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 June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June 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
June 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).