St. John's weather in June

In June, St. John's sees average daytime highs of 27°C and overnight lows near 26°C, with 51 mm of rain across 12.1 wet days and about 13 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 42% of the time in June, and the air most often feels oppressive.

Daylight stretches from about 12 h 54 min at the start of June to 13 hours by month's end. Set against the rest of the year, June is St. John's's 9th-clearest and 3rd-windiest month. For the whole year in context, see St. John's's year-round climate.

Daytime high
27°
5th warmest
Overnight low
26°
9th coldest
Rainfall
51 mm
12.1 wet days
Daylight
13 hours
5:37 AM – 6:38 PM
Cloud cover
54%
9th clearest
Wind
27 km/h
3rd windiest
Solar energy
6.62 kWh/m²
Travel score
6.1
out of 10

St. John's is largest city of Antigua and Barbuda.

Density
5,174/km²
people per km²
Founded
1666

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 St. John's 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
152726
162726
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826

How June really feels in St. John's

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.

St. John's 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°321011.17.3
Feb25° / 24°217.111.47.7
Mar25° / 24°216.611.97.8
Apr26° / 25°338.812.47.2
May27° / 26°6212.412.86.3
Jun27° / 26°5112.1136.1
Jul28° / 26°7815.912.95.8
Aug28° / 26°9817.812.65.4
Sep28° / 26°1271812.14.9
Oct28° / 26°13218.811.65.2
Nov27° / 26°10315.811.25.8
Dec26° / 25°5813.3116.6

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% 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 (%)
15644
25644
35644
45644
55644
65743
75743
85743
95743
105644
115644
125644
135644
145545
155644
165644
175743
185743
195743
205842
215743
225842
235842
245842
255941
266139
276139
286238
296238
306337

Chance of precipitation in June

Any precipitation

St. John's gets around 51 mm of rain over 12.1 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 41% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
241
341
441
541
641
741
841
941
1042
1142
1242
1342
1442
1542
1641
1741
1840
1940
2040
2140
2240
2340
2440
2540
2640
2741
2841
2942
3043

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1919
2919
3919
4919
5919
6919
79010
89010
99010
109010
118911
128911
138812
148812
158713
168614
178614
188515
198515
208416
218416
228317
238317
248317
258218
268218
278218
288218
298119
308119

Wind in June

Winds average 27 km/h in June.

Across June, daily wind ranges from about 25 km/h on the calmest days to 29 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
125breezy
225breezy
325breezy
426breezy
526breezy
626breezy
726breezy
826breezy
926breezy
1026breezy
1127breezy
1227breezy
1327breezy
1427breezy
1527breezy
1627breezy
1728breezy
1828breezy
1928breezy
2028breezy
2128breezy
2228breezy
2328breezy
2428breezy
2528breezy
2628breezy
2729breezy
2829breezy
2929breezy
3029breezy

Sunrise & sunset in June

DaylightNight

Daylight runs from about 12 h 54 min at the start of June to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:37 AM to 5:40 AM, and sunset from 6:33 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:376:33
213.05:366:34
313.05:366:34
413.05:366:34
513.05:366:35
613.05:366:35
713.05:366:35
813.05:366:36
913.05:366:36
1013.05:376:36
1113.05:376:37
1213.05:376:37
1313.05:376:37
1413.05:376:38
1513.05:376:38
1613.05:376:38
1713.05:376:38
1813.05:376:39
1913.05:386:39
2013.05:386:39
2113.05:386:39
2213.05:386:40
2313.05:386:40
2413.05:396:40
2513.05:396:40
2613.05:396:40
2713.05:396:41
2813.05:406:41
2913.05:406:41
3013.05:406:41

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.62 kWh/m².

For context, solar energy here swings from a low near 4.61 kWh/m² to a high of 6.7 kWh/m² in April across the year — June's 6.62 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in June

Hazard calendar for St. John's

In seasonPeak

In June, St. John's sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

St. John's sits in the Atlantic hurricane belt; the season peaks August–October.

St. John's's rainy season runs July–November, when most of the year's rain falls.

St. John's 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 St. John's?

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

6.1
Sightseeing
7th-best month of the year
6.4
Beach & pool
7th-best month of the year

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

What to pack for St. John's in June

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

In June, St. John's 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 12 days see rain.

light clothessun protectionrain geara windbreaker

Sea temperature near St. John's 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 St. John's 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 St. John's peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 10UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7Very high

Air quality in St. John's 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 St. John's is worst in July — around 24 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1124 µg/m³Dec 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar9Good
Apr11Good
May14Moderate
Jun24Moderate
Jul24Moderate
Aug20Moderate
Sep16Moderate
Oct17Moderate
Nov11Good
Dec8Good
Location & terrain

Where is St. John's?

St. John's sits at 17.1°N, 61.8°W, 12 m above sea level, in Antigua and Barbuda. The nearest listed city is Falmouth, 12 km away.

FalmouthEnglish HarbourCodrington

Topography around St. John's

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of St. John's.

Within 3 km, the terrain around St. John's has only modest variations in elevation — a maximum elevation change of 109 m around an average of 20 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 391 m; within 80 km, large variations in elevation — a maximum elevation change of 1,011 m.

The land around St. John's is covered by artificial surfaces (35%) and trees (31%) within 3 km, water (69%) within 16 km, and water (96%) within 80 km.

3 km
109 m
16 km
391 m
80 km
1,011 m
treesgrasslandcroplandartificial surfaceswaterwetland
June weather nearby: Falmouth 12 km · English Harbour 14 km · Brades 54 km · Codrington 58 km · Plymouth 61 km · Sainte-Rose 89 km · Basseterre 96 km · Baie-Mahault 99 km

Antigua and Barbuda travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
230 V · 60 Hz
Prices
≈ 69% of US
price level, 2025
GDP per capita
$24,819
2025
Homicide rate
10.7
per 100k, 2023
Road deaths
0
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 68%other 12%Roman Catholic 8%none 6%

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 St. John's (17.121°, -61.8433°, elevation 12 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).